Hire the best RADIUS specialists

Check out RADIUS specialists with the skills you need for your next job.
  • $100 hourly
    TOP RATED ELITE FREELANCER on UpWork with 20 years of experience in Network Engineering, Cyber-security and Solutions architecture. A Cisco Certified Network Professional (CCNP) and Azure Certified Solutions Architect - Expert. Advanced hands-on in Cisco FirePower and Palo Alto NGFW. I adapt to new technology quickly and can accomplish project goals with quick turn-around times. When undertaking a project, it is essential to understand the client's ecosystem and how their business goals align with their technology requirements. I use proven techniques and methodologies to scope out problems and provide solutions that have low risk and quick turn-around times in production environments, translating into cost savings, increased productivity, and enhanced security posture. While Cisco networking is my core specialization, I have worked with a wide variety of networking and server vendors, including Palo Alto, Juniper; HP; F5; Meraki; Fortinet; Aruba; Ubiquiti; Darktrace; SonicWall; Netgear; Windows; Linux; VMWare; etc. I am also well versed in AWS, Azure, and IBM cloud solutions. Managed IT and Security services is my passion. I have managed teams and designed data centers and enterprise networks of various sizes spanning geographic locations with hundreds of thousands of end-users. My experience in consultation, architecture, strategy, and tactics include but are not limited to: - Hyperconverged Infrastructure - SD-WAN (Velocloud, Fortinet, Cisco) - Security assessment and gap analysis - Compliance frameworks and road-mapping - SOAR playbook modeling - SIEM design and implementation - SOC planning, design, and implementation - Datacenter design and deployment - Windows Servers - SSO & MFA - Palo Alto Panorama - Palo Alto Advanced End-Point Protection - Juniper Mist cloud - Azure and AWS solutions architecture - Dell OpenManage Enterprise - Wireless & Mobility - Dynamic routing protocols - EIGRP, OSPF, IS-IS, and BGP - Network analysis - Network rationalization - Network automation - Ansible and Puppet
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    Wireless Network Implementation
    Juniper
    Cisco Firepower Threat Defense
    VMWare
    Security Infrastructure
    Cisco Router
    Certified Information Systems Security Professional
    Multiprotocol Label Switching
    Cisco ISE
    VPN
    Palo Alto Firewalls
    Network Engineering
    Network Design
    Microsoft Azure
  • $78 hourly
    *****Jack Of All Trades, Master Of Networks***** - Top Rated Network and Cloud Engineer. - 300+ projects and 6000+ Upwork hours up to date. - Six figures in the past twelve months. - Full-Time Freelancer. - Half million earned on Upwork. Networking vendors I have worked with: * Cisco, Mikrotik, Fortigate, Ubiquiti, Vyatta, VyOS, pfSense, Sonicwall, Sophos XG, Watchguard, Brocade, Ruckus, HP, Huawei, HPE, Aruba, Arista, etc. Cloud Skills: Terraform (AWS, Azure, GCP) AWS - VPC, EC2, RAM, R53, LB, S3, IAM/SSO, various NGFWs, Terraform. Azure - AD, AADDS, S2S VPNs, VMs, LB, NGFWs, Azure Hub-Spoke, Terraform. GCP - Cloud Compute, Security, NGFWs, Terraform. Digital Ocean Vultr ...
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    AWS Application
    Fortinet
    Open Networking Operating System
    Cisco ASA
    Network Design
    Ubiquiti
    Cisco Router
    MikroTik RouterOS
    Brocade
    PfSense
    OpenVPN
    Sophos Sophos UTM
    Google Cloud Platform
    Microsoft Azure
  • $55 hourly
    There is some feedback: - Pavel was fantastic! My project hit a snag and I needed an FTP server configured quickly. When I couldn't complete the task myself, I asked for help. Pavel jumped in immediately and had me fixed in no time and friendly answered all my questions. This guy is a real problem solver! - Very smart when it comes to Linux systems, was able to help with our issue. - Very skilled and professional expert who solved all additional and unexpected problems with patience. He overdelivered and I can highly recommend working with him! - The problem was solved quickly and efficiently. - Pavel did a great job tracing the problem and solving it - Pleasure to work with. Skilled system administrator and network engineer with 18 years of hands-on experience. Know how to organise network in one office or in several offices connected via vpn. Unix system administrator, with a lot of experience in Linux and BSD distributions.. I have got working experience with: DNS; DHCP; LAMP-LEMP; FTP; SMTP; SNMP; ACL, firewalls and NAT; I have experience with cloud services (AWS, GCE, Vultr, DigitalOcean) and virtual infrastructure (vSphere, Hyper-V, Proxmox); I have got working experience with Monitoring (Zabbix); VoIP/IP telephony (Asterisk,FreePBX).
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    Asterisk
    DNSsec
    WordPress
    Linux System Administration
    Firewall
    Apache Administration
    MySQL
    LAN Administration
    Session Initiation Protocol
    Squid
    Web Hosting
    Network Engineering
    VMware vSphere
    NGINX
  • $45 hourly
    Expert in Mikrotik, Ubiquity, gained from working in a WISP/ISP environment. Hands-on different types of gear: Meraki, Radwin, SAF, Netonix, Cambium, Mimosa. Hands-on different monitoring systems: Zabbix, PRTG, UNMS, DUDE. Planning, configuring and troubleshooting different sizes and types of networks.(Wired and Wireless)
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    Customer Service
    Technical Support
    WiFi
    Mikrotik RouterBOARD
    Wireless Network Implementation
    OpenVPN
    MikroTik RouterOS
    Virtualization
    Network Engineering
    Virtual LAN
    Ubiquiti
    Network Administration
    Internet Protocol Security
    VPN
    Network Design
  • $80 hourly
    Welcome to the AI-driven world! My expertise extends to fine-tuning GPT models using various frameworks, transformers and NLP-bots, including vector databases. With a wealth of experience in AI technologies and tools, I cover everything from prompt engineering for ChatBots and web-scraping, to developing comprehensive assistant bots, APIs, and custom web/mobile/desktop applications tailored to your business needs. - Supervised & unsupervised learning (e.g. sales prediction, customer segmentation, SHAP), recommendation engines, predictive analytics, deep learning - Time series forecasting, financial modeling, stock market prediction - Natural Language Processing (NLP/NLU): summarization, keyword importance analysis, sentiment analysis, semantic scoring, intent prediction, Q&A, conversational AI - Speech recognition and generation - Optimization problems, dynamic programming - Data modeling, software architecture - Development of web apps & API endpoints I specialize in leveraging Deep Learning tools (Object Detection, Image Classification, Image Segmentation, Keypoint Detection) and Natural Language Processing to serve as your trusted guide through the realm of AI. Key skills and tools: ✅Language: Python (including SciPy, scikit-learn, SpaCy, mpld3, PyQt, Tensorflow, Keras, PyTorch, Flask / web.py) ✅Gemini, Mistral, ChatGPT: GPT-3, GPT-3.5, GPT-4 ✅Platforms: Apify, Make, Zapier, Dialogflow, LangChain, OpenAI, TensorFlow, PyTorch, HuggingFace, Falcon LLM, and much more ✅Technologies: LLM, GenAI, OCR, CNN, RNN, LSTM, RAG, NER, NLP, Time series forecasting, Computer Vision ✅MLOps: Neptune, MLFlow, BentoML, NumPy, Onnx, Docker, Azure, DigitalOcean ✅Multimodal technologies: Voice cloning, text-to-image, text-to-speech and speech-to-text ✅Databases: Pinecone, Neo4J, MongoDB, PostgreSQL, MySQL Whether you are looking for a custom solution or just need some guidance on an existing project, I am always ready to sync with you to discuss in detail your idea and provide a solution and any suggestion to improve your idea. Let's harness the power of AI to elevate your business to the next level.
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    MLOps
    AI Model Training
    AI Text-to-Image
    AI Text-to-Speech
    ChatGPT
    Python
    Chatbot Integration
    AI Chatbot
    Machine Learning
    Prompt Engineering
    Artificial Intelligence
  • $79 hourly
    Hello, Everyone. Diligent Information Technology Specialist with thorough hands-on experience in conceptualising, overseeing, and executing revenue-generating projects of different complexity and intensity. Determined to bring high standards, transparency in client engagement and full commitment to each assignment and I am excited to collaborate with the brightest minds in the industry. More than 2500 of hours @Upwork Over 10 years proven track record of success in cross-continental project management Skills: * Systems administration: Linux (RedHat, Debian, Ubuntu), FreeBSD, Windows * Network administration: VLAN, VPN, Wireless networks, Network equipment management (HP, Cisco, Huawei, Juniper), Deep understanding of network architecture * Wireless: Aruba (WLC, Clearpass) , Fortinet, Aerohive, Cisco (WLC) and Meraki * Routing technologies: BGP, OSPF, EIGRP, IS-IS, RIP, Static routing * High availability: active-passive clusters (HSRP, VRRP, JRRP), load-balancing techniques * Security: firewalling (ASA, FWSM, Fortigate, Juniper including SSG, SonicWall,pfSense), antivirus techniques, antispam techniques, PKI, IDS/IPS, RADIUS (Windows / FreeRadius based) * Voice and Videoconference: Polycom, Skype, Cisco (VCS, CCM, CUCM, Unity, IMP), Nortel, Asterix type (TrixBox, Elastix, etc.) * Network Management Systems: CIsco Prime, Cacti, PRTG, Zabbix, NAGIOS
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    Cisco
    AWS Systems Manager
    Security Assessment & Testing
    Database Administration
    Firewall
    Cloud Architecture
    Network Penetration Testing
    Cisco Certified Network Professional
    Network Administration
    Microsoft Office
    Network Security
    Fortinet
    VoIP
    Network Design
  • $150 hourly
    ✅ Highest earnings & rating for Jamf Freelancer ✅ 60+ Jamf Pro deployments ✅ 30+ Intune deployments ⚙️ Zero-touch deployments for macOS with DEPNotify ⚙️ Advance scripting to enhance your Jamf workflows ⚙️ Jamf Connect (Okta, Azure AD, GSuite) and Jamf SSO workflows ⚙️ Custom sh scripting and pkg creation ⏱ Full-time Independent Freelancer 🏢 Supporting deployments and automation for 5 large Jamf MSPs. 🗣 Communication is key to any project which is why it will always be #1 priority. A diverse Systems Engineer with 10+ years of experience in developing and maintaining IT systems, and 8 years of experience in mobile device management. Technical expertise spreads across server and backup administration, cloud security, software support, asset management, vendor management, and customer support. Specializes in saving man-hours and money for the enterprise.
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    JAMF
    OKTA
    VMware ESX Server
    Technical Support
    Solution Architecture Consultation
    Mac OS X Administration
    Mobile Device Management
    Bash Programming
    Windows 10 Administration
    Bash
    Microsoft Windows
    Systems Engineering
    Microsoft Azure
    Microsoft Windows PowerShell
  • $100 hourly
    Hello Dear Client. If you are looking for ✅ Knowledgeable and experienced administrator to resolve your problems ✅ Responsible and skilled engineer to plan your reliable IT infrastructure ✅ Contractor to improve and maintain your IT environment ✅ A person who will care about your servers, services and keep them stable and robust YOU ARE IN THE RIGHT PLACE ⚡️ Enterprise Architecture ⚡️ Office365/Azure cloud infrastructure and services ⚡️ Microsoft Windows 2008 till 2019 server products (full range of MS services) ⚡️ System Center components (SCCM,SCVMM,SCOM,SCSM,DPM,Orchestrator) ⚡️ Microsoft Exchange 2007 till 2019/Exchange Online ⚡️ Windows 7/8/10 desktop client products I am working in IT for 20 years and have practical work experience to solve the most complex task and provide service, and that proved by more than 9000 successful hours on Upwork for my clients. Most important is for you and me - I still love my work, which can be an advantage in any of your projects related to the Microsoft platform. My approach is always - solve all tasks with maximum effectiveness and less expense. The main specialization of my expertise - Active Directory/DNS/DHCP, System Center components and Private Cloud, Azure technology, Exchange servers. My knowledge and skills are proved by Microsoft certificates which you can find in my portfolio. I am looking for exciting projects or a short-time job. I can help with planning, implementation, and infrastructure support for small, mid, or big-size companies. Also, I can help in troubleshooting and resolving complex cases. On top of the presentation, you will find a list of products I am proficient in and help in planning, supporting, and troubleshooting.
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    Virtual Desktop Infrastructure
    Cluster Computing
    Microsoft SCCM
    Windows Administration
    Microsoft Hyper-V Server
    Microsoft Exchange Online
    Network Administration
    Office 365
    Microsoft Azure
    Microsoft Exchange Server
  • $150 hourly
    TOP RATED on UpWork. Certifications from Microsoft, Cisco, Citrix & CompTIA. Partnered with Synology, Ubiquiti & Dell. Channel authorized product reseller. SENIOR SYSTEMS / NETWORK ENGINEER • Hands-on, results-oriented IT professional with a 20-year track record of experience spanning a full range of IT/IS deployments and operations management • Well-equipped with technical certification and training in Cisco, Meraki, Citrix, Microsoft & Project Management, solid background in LAN/WAN infrastructure including telecommunications technologies and protocols, network infrastructure, security and load balancing appliances. • Organized, take-charge professional with exceptional follow-through abilities and detail-oriented, able to assess and execute deployment engagements from business needs assessment to production. SOLUTIONS • Datacenter power, cabling and rack design & implementation • Server load balancing appliances provided by Citrix NetScaler, Kemp & Barracuda • Site-to-site mesh VPN deployment using Meraki VPN Registry • Virtualization hosts from Citrix, VMware &Microsoft • Virtual machine management using template automation, Citrix MCS, PVS & Citrix AppLayering • User experience optimization with Citrix WEM, Citrix UPM, Profile Unity and AppSense • Wireless deployments from Meraki, Ubiquiti & Cisco • Network security firewalls provided by Meraki, Ubiquiti, SonicWall, Cisco & Palo Alto • Storage area network (SAN) deployment from Pure Storage & Dell/EMC • Exchange connectivity and mail flow troubleshooting • Windows patch management deployment using WSUS & Ivanti Patch • Microsoft Distributed File Services – Replication (DFSr) deployments ... and many other solutions of a long track record of satisfied client engagements!
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    Email Deliverability
    Hosting Setup
    Ubiquiti
    Duo Security
    Storage Area Network
    Server Virtualization
    VMWare
    Cisco Meraki
    Citrix
    Citrix ADC
    Microsoft Active Directory
    Network Administration
    Web Hosting
    Network Security
    Firewall
  • $35 hourly
    CCSE, ITILv3 , Fortinet NSE4 CCNP R&S,CCNP Security. In the last 12 years, I have been working on various network products and have gained comprehensive experience in Cisco, Fortinet, Sonicwall, Checkpoint, HP, F5, Radware technologies. I have been involved in the design, configuration, and troubleshooting of Network products. Firewalls: Cisco ASA 5500 Series Cisco ASA 5500-X Series Cisco Firepower 2100Series Cisco Firepower 4100Series Fortigate 400F Fortigate 200F Fortigate 100F Checkpoint 5800 Appliance Checkpoint 12400 Appliances Checkpoint 12600 Appliances Sonicwall TZ Series Sonicwall NSA Series Pfsense ZTNA FortiGate ZTNA Load Balancers: F5 BIG-IP Application Delivery Controllers Radware Application Delivery Controllers Array Application Delivery Controllers Fortinet Application Delivery Controllers. Routers: Cisco, Arista, HP Switches: Cisco Catalyst Cisco Nexus N5K & N9K HP Switches Wireless Controller & Access Points: Cisco WLC, Aruba WLC Unify WLC Meraki
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    Cisco Router
    Firewall
    SonicWall
    Cisco Firepower Threat Defense
    FortiGate Firewall
    Zero Trust Architecture
    Web Proxy
    Cisco ASA
    Cisco Certified Network Professional
    Load Balancing
    Check Point
    Network Security
    Cisco Meraki
    VPN
  • $125 hourly
    I am a certified Systems Engineer with 24 years of experience in the IT field.  I have extensive experience with the following vendors and their respective products: Microsoft, VMware, EMC, HP, Dell. Microsoft - Windows Server 2000 - 2022, Active Directory, Exchange 2000+, MS SQL 2000+, IIS, Terminal Services (RDS), SCCM, Hyper-V, MS Sharepoint.  Experience deploying MS products listed according to best practices.  Experience administering MS Active Directory, GPOs, powershell/vbs/bat scripts, homeshares, roaming profiles, exchange environments.  Experience upgrading these solutions as well as migrating workloads to newly deployed servers. VMware - vSphere, ESXi, vCenter, vROPS, SRM(minimal), vSAN, vVOLS, Horizon View, ThinApp, Workspace, AppVolumes, VMCA, vCSA, Auto Deploy, Host Profiles, Storage Providers, Log Insight.  Extensive experience with VMware ESX/ESXi since version 3.5 to version 7.0.  Experience with vCenter setup and upgrades, as well as migrations to builds designed according to VMware best practices.  Experience setting up VDI infrastructure from the ground up and supporting VDI daily.  Experience setting up Windows 7, 10, Server 2008 R2 as VDI desktop image and optimizing image for VDI use.  Experience upgrading versions of Horizon View according to VMware best practices. Storage Arrays, NAS Clusters - EMC Centera, EMC Celerra, EMC VNX 5300, EMC CX4, EMC CX3-20, EMC Isilon, EMC VMAX250F, HP 3Par 7440c, HP 3Par 7450 Experience managing the storage arrays previously mentioned.  Responsible for administering storage area network and attached storage devices; add/remove FC zones, firmware upgrades, etc.  Experience creating new FC zones in brocade switches to map hosts to storage arrays. Experience administering LUNs, hosts, storage groups, etc., on all mentioned arrays.  Also have experience setting up VASA providers on all storage arrays and integrating the VASA provider with VMware vSphere 6.0. Hardware Servers - Dell, HP.  Dell PowerEdge Servers from 5500 to R720s; Blade enclosure management, M1000 and 1855.  HP DL 360 and 380 rack mount servers Gen4 to Gen9.  HP Blade enclosures, C7000. Management Software - HP OneView, HP iLo, HP OneView for vCenter, Dell iDRAC, Dell Open Manage Backup Solutions - Veeam, Rubrik, EMC Avamar, EMC Networker, EMC DataDomain. Symantec Backup Exec. I also have extensive experience with Linux systems, administration, and updates/upgrades.  I have extensive experience with Apache and NGINX web servers, also configured as reverse proxies.  Also have experience with Docker containers, RDBMS systems such as MySQL, MariaDB, PostgreSQL.  Experience with PHP configuration as well.   CMS Systems - Webuzo, Wordpress MainWP, cPanel, Webmin/Virtualmin, Plesk, WHM.  I can setup and administer all these CMS systems. Cloud Infrastructure - I have experience setting up environments in the following cloud providers:  Azure, AWS, DigitalOcean, Tierpoint, LiquidWeb, Google Cloud, GoDaddy, and others.   Cloud Storage - I have experience with the following cloud storage providers:  Azure, AWZ, DigitalOcean, Dropbox, Google Cloud, BackBlaze, and other S3 compatible. I can provide complete services for your existing infrastructure as well as install and configure new environments.  I am always interested in new projects and look forward to speaking with you about how we can work together.
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    Microsoft IIS
    SSL
    VMware NSX
    VMware Administration
    Microsoft Active Directory
    Microsoft SQL Server Administration
    Storage Area Network
    VMWare
    SSL Certificate
    Microsoft SCCM
    Microsoft Windows PowerShell
    Microsoft Exchange Server
    Scripting
    Windows Server
    Load Balancing
    Network Administration
  • $75 hourly
    Current Certifications: * CCENT ( Cisco Certified Network Technician ) * CCNA (Cisco Certified Network Admin (Routing & Switching)) * CCNP (Cisco Certified Network Professional (Routing & Switching)) * CCNA-SECURITY (Cisco Certified Network Security Admin) * SECURITY+ CE (CompTIA Certified SECURITY) * CEH (Certified Ethical Hacker) I am a Sr. Network and Security Engineer (SME) with expertise in Cisco Network Engineering and Cyber Security Engineering with year of I.T. experience managing private and government enterprise networks and Cyber security Network environments for large and small businesses . I have over 18+ years total experience as a lead Sr. network engineering SME as my foundation , and 9 yrs experience in Cyber Network Security infrastructure , design, configurations, troubleshooting, Cyber threat hunting. Also upgrading enterprise networks and security infrastructures for private companies , government organizations , including large and small business Networks and information systems. These skills include SME experience in Cisco Routing and Switching, ASA Firewalls, Palo Alto, Pfsense , VPNs, F5 Load balancer, WLAN, VoIP, and Cyber Security tools and SIEMS and Network Scanning, Windows Server, and WiFi networks.
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    VMWare
    Cisco CallManager
    System Configuration
    VoIP
    Ethical Hacking
    Cisco Certified Network Professional
    Cisco Certified Network Associate
    Cisco Router
    Cisco ASA
    VPN
    Firewall
  • $95 hourly
    5 key potential reasons why would you hire me rather than an a cheaper developer who "knows" about browser extensions: - you want access to a software engineer who can ascertain whether your requirement is feasible and realistic. - you require clear and regular communication throughout the life of the project. - quality and in-time deliveries are critical to your business. - you need an individual able to easily integrate into a multi-cultural multidisciplinary team. - you hate starting with cheap hourly rates and finally end-up with the double amount of hours. In short ... you can't afford to suffer from the "discovery" syndrome from a non-expert. Important note: I will decline all "simple" ie <1 week project offers unless they are a stepping stone to something big and challenging. Back to me: I have developed and contributed to more than 30 private and public browser extensions with 100% success rate in domains as varied as lead sourcing, reputation management, cashback programs, process automation, browser security etc ... I am part of the WebExtensions Community group (led by Google,Mozilla/Apple) and run a technical blog at browserextensionresources.blogspot.com My technical experience covers in-breadth and in-depth extension development aspects: - typescript & webpack - standard frameworks (REACT, jquery, materialize, bootstrap, inbox sdk etc ...) - mySQL and Firebase/Firestone Databases - project APIS as well as 3rd party APIs such as Google apis, Zoho, Bullhorn ... - automated non-regression testing - analytics for fix&feature development prioritization, A/B testing I can assist you with various aspects of the extension lifecycle: - consulting & technical lead (including manifest V3 migration) - PoC/MVP/product development - extension expert staffing - technical lead Some examples of extensions: - Kagi apiTester (private chrome/FF extension): automated web extension API testing environment for validating a new browser called Kagi. - Videonotebook (public chrome extension): note-taker which helps you remember more from your videos and meetings. - ExecVision conference recorder (public chrome extension): enables users to record meetings (meet, zoom, webex etc ..). - The Social Lead Machine (public chrome extension): linkedIn data extraction and profile search automation. - Password Depot Extension (public chrome extension & Firefox): centralized password management. - Masterkey (public on chrome store) : automatic login and user review response for reputation management. - SpeedCRM (private Firefox extension) is a greasemonkey type of extension which tailors Salesforce CRM to specific organization requirement and boosts user-productivity. You will find some of those extensions on git (jml674)
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    React
    Node.js
    Google Chrome Extension
    HTML5
    GUI Design
    Database Programming
    Google APIs
    Socket Programming
    OpenCV
  • $70 hourly
    6+ years as DevOps 8+ years as Virtualization / Cluster Expert 12+ years as Linux/BSD administrator 15+ years as Network Engineer 16+ years as Systems Administrator I can help you with: ➢ Virtualization: KVM, Xen, OpenVZ, LXC, LXD, FreeBSD Jail, Proxmox, VDSmanager, Docker ➢ Management: Proxmox, OpenNebula, OpenStack, oVirt ➢ Storage: CEPH, LizardFS, DRBD, SCSI, ISCSI, SAN, NAS, LUNS, ZFS ➢ Orchestration: Puppet, Foreman, Ansible, Chef, Salt ➢ High availability: Corosync, Pacemaker, MySQL cluster, Multipathing, Bonding ➢ Monitoring: Zabbix, Monit, Cacti, ELK(Elasticsearch+Logstash+Kibana) ➢ Backup & Archiving: Bacula, rsync
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    DevOps
    Linux System Administration
    Proxmox VE
    Unix Shell
    Storage Area Network
    Cloud Computing
    Network Administration
    Docker
    Zabbix
    Virtualization
  • $75 hourly
    I have experience with large corporate networks. I have designed, implemented and maintained WANs/LANs utilizing MPLS, BGP and DMVPN technologies. I have redesigned wireless infrastructures to support a BYOD policy and a deployment of iPads if in a high school setting. I have experience with high availability internet and WAN fail-over to disaster recovery sites. Along with that I also play a part as a pre/post sales network engineer. That roll includes assessing a client/customers existing network environment, finding their pain points and then designing a network that improves their experience and solves their existing problems. Additionally I have extensive experience with establishing and maintaining vendor relationships for networking hardware, project implementations, and break/fix maintenance. Those ongoing relationships include CDW, Cisco, BD Managed Services, Global Crossing/Level3 an TW Telecom. Specialties: Cisco Router/Switch, Firewall, Wireless, Meraki
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    Cisco Certified Network Professional
    Cisco Meraki
  • $30 hourly
    Experienced network engineer & administrator with 10+ years of experience in different communication fields. Experience in support, configure, maintain and upgrade small, intermediate & corporate customer’s & ISP networks, also monitor network performance (availability, utilization, throughput, and latency) and test for weaknesses. - Mikrotik Certified Network Associate (MTCNA) - Grandstream Certified Specialist for UC Solutions - Certified System Installer for BKT Elektronik Poland with 5+ years of experience. - Experience with IP PBX technology.
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    Network Planning
    Computer Network
    MikroTik RouterOS
    Mikrotik RouterBOARD
    Network Administration
    MikroTik
    Virtual LAN
    Network Equipment
    Network Design
    Network Engineering
    VPN
    Ubiquiti
  • $150 hourly
    I have over 15 years working in the IT industry and have a broad knowledgebase and skillset. I enjoy working on different projects and working with new people and companies.
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    Microsoft SharePoint Administration
    Virtualization
    Amazon ECS
    Cloud Migration
    DNSsec
    AWS Server Migration
    Managed Services
    Twilio API
    DevOps
    SMTP
    Private Cloud
    SMS Gateway
    Security Infrastructure
    Google Workspace Administration
    Microsoft Azure
    Google Cloud Platform
    Microsoft Exchange Server
    Office 365
  • $95 hourly
    Information Security and Infrastructure professional with over 15 years of experience. I have passion and talent for aligning architecture, plans, controls, processes, policies and procedures with organizational goals and security standards. Examples of previous projects and samples of documentation can be provided upon request. Certifications: - CISSP - C|EH Strengths: - Attention to detail - Planning - Knowledge in multiple areas of IT Skills: - Cybersecurity - Compliance (SOC 2, PCI, NIST/FISMA) - Microsoft products including Windows Server (2000 - 2019) Exchange Server (2010 - 2019) Active Directory (ADDS, DNS, Group Policy, etc.) Terminal Services / Remote Desktop Services Clustering services IIS - Networking (Cisco, Dell, Brocade, HP, etc.) - Firewall (Fortinet, Cisco ASA, Sonicwall, Palo Alto, pfSense) - Other Fortinet products (FortiADC, FortiManager, FortiRecorder, etc.) - Virtualization (VMware and Hyper-V) - Storage Area Networks (Nimble, EMC, Equallogic, etc.) - Office 365 - Cloud platforms (Azure and AWS) - Disaster Recovery (Zerto, VMware SRM, Azure Site Recovery) - Documentation (Creating policies, procedures, diagrams, and more) Recent Projects (Newest to Oldest): - Implemented FortiADC (application delivery controller) for use with Exchange 2019. - Upgraded Exchange environment from 2016 to 2019. This was re-designed to be more highly available. This organization moved from a single Exchange server to multiple Exchange servers that are distributed across multiple data centers. - Converted configuration of pfSense firewall to Fortigate and assisted the organization in successfully deploying minimal downtime and disruption. (100 employees) - Implemented new Nimble HF40 hybrid array. (500 employees) - Implemented new security policy and procedures while helping the organization navigate its first FISMA assessment (500 employees) - Implemented new VoIP Shoretel/Mitel phone system (500 employees) - Implemented new DR Infrastructure (500 employees) This project included setting up a co-location in Austin, TX, (Firewalls, switches, VMware hosts, storage array, and Zerto replication software). Months of planning and preparation went into designing and implementing this disaster recovery project. This project also included updating all DR documentation including DR plan, policies, and procedures. - Implemented Nimble Storage AF-3000 Array (500 employees) - Upgraded VMware host environment (500 employees) - Migrated environment from Exchange 2013 on-premise to Office 365 (500 employees) - Migrated customer from on-premise environment to AWS. Consisted of AD migration to AWS directory services, VMware VMs to EC2 instances, and MySQL databases to AWS Aurora. (50 employees) - Implemented multiple Nimble AF Storage arrays (1000 employees) - Upgraded Microsoft file share environment which consisted of three locations (1000 employees) - Upgraded Exchange environment from 2013 to 2016 (1000 employees) - Upgraded VMware host environment and storage environment (1000 employees) - Implemented Barracuda Email Security Gateway appliances (500 employees) - Upgrade Exchange environment from 2010 to 2016 (500 employees) - Implemented Nimble Storage CS-300 Array (500 employees) - Implemented Fortinet FGT-800 firewall cluster (500 employees) - Upgraded core network from 1GB to 10GB. (500 employees) - Upgraded Mitel phone system to latest version and converted from physical system to virtual system. (500 employees) - Implemented Email Archive system. (500 employees) - Upgraded Active Directory Domain environment to Windows Server 2012 R2. (500 employees) - Upgraded and consolidated multiple file share servers into a single Windows Server 2012 R2 server. (500 employees)
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    Fortinet
    Network Planning
    Network Administration
    Network Monitoring
    Network Engineering
    Systems Engineering
    Storage Area Network
    Microsoft Windows PowerShell
    Compliance
    Policy Development
    VMware vSphere
    Certified Information Systems Security Professional
    Microsoft Exchange Server
    Network Security
  • $90 hourly
    I'm a highly technically skilled customer advocate systems engineer. My technical focus is on Linux, Networking, and Python. I've worked with small businesses, enterprises, academic institutions, and governments to provide innovative solutions to immediate and long-term needs.
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    Data Scraping
    Tableau
    HTML5
    CSS
    Amazon Redshift
    Jira
    JavaScript
    Network Monitoring
    Network Design
    Puppet Administration
    Linux System Administration
    Network Security
    Web Hosting
    Git
    Python
  • $50 hourly
    "Hello, I am an experienced IT administrator with expertise in Microsoft 365, Windows server administration, Azure AD management, and more. With over 11 years of experience in IT administration and management, I have a proven track record of successfully managing complex projects and delivering high-quality results. Some of my key skills and experience include: Microsoft 365 Administration: Exchange, SharePoint, Teams, OneDrive, Microsoft 365 Defender Windows Server Administration: Active Directory, DNS, DHCP, Group Policy Azure AD Management: Conditional Access, SSO, Multifactor Authentication Intune Management and Microsoft Endpoint Manager Microsoft Azure Server Administration and Backup Center Firewalls, Antivirus, and Mail Gateways: Bitdefender, Barracuda, Webroot Backup Systems: Azure Backup, Datto, IDrive RMM Tools: Kaseya RMM, Logmein, Splashtop, ConnectWise, TeamViewer, AnyDesk, Autotask Ticketing Systems: Kaseya VSA, BMS, Rave, Autotask, ITarian, Atera Network Administration and Management: Firewalls, Access Points, Wireless APs, Printers, Scanners Amazon Web Services Administration: EC2, S3, Route 53 I have worked on a variety of projects in the past, including working for multiple MSPs and cloud service providers. In my work, I prioritize clear communication and collaboration with my clients to ensure that we are always aligned on project goals and timelines. If you are looking for an experienced IT administrator who can help you manage your technology infrastructure and ensure that your systems are running smoothly, please don't hesitate to reach out. I look forward to working with you!"
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    Microsoft Active Directory
    Technical Support
    Windows Administration
    Cisco Router
    DNS
    Office 365
    Cisco ASA
    Microsoft Exchange Server
    Windows Server
    System Administration
    Microsoft Teams
    Microsoft Office
    VPN
  • $125 hourly
    20+ years of experience specializing in Infrastructure and hybrid-cloud architect roles focusing on the Microsoft Azure platform as well as cloud security best practices. My technical prowess covers many different facets mostly across backend infrastructure both on-premises and cloud based. I've covered both SMB and large scale enterprise environments. I have an extensive job history of hundreds of past clients just here on Upwork across a large variety of organizations sizes and verticals. Please feel free to ask about any prior job experiences. Certifications: Microsoft Certified: Azure Administrator Associate Microsoft Certified: Azure Solutions Architect Expert Microsoft Certified: Azure Network Engineer Associate Microsoft Certified: Azure Virtual Desktop Specialty Microsoft Certified: Azure Security Engineer Associate Skill set includes but not limited to the following: Windows Server, Exchange, Active Directory, PowerShell, VMWare, Hyper-V, RHEL, SUSE Linux Exchange Online, Entra ID (Azure AD), Teams, Sharepoint Online, Onedrive, Entra ID Premium, Enterprise Applications/App Registrations (SAML), Entra ID Connect, DLP and Governance, Conditional Access, Intune (MEM) with Autopilot, Sentinel, Front Door, Azure Firewall, , Defender for Endpoint/Cloud/Identity Virtual Machines, VMSS, Azure Backup, Azure Site Recovery, Azure Blob Storage, Azure Migrate, Azure SQL, API Management, Service Bus, App Services, Functions, Azure Container Registry, Application Gateway, App Insights, Azure Virtual Desktop (AVD/WVD), Windows 365 Cloud PC.
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    Email Communication
    Microsoft Azure SQL Database
    Information Technology Strategy
    Ubiquiti
    Computer Network
    Windows Administration
    Azure App Service
    Microsoft Exchange Server
    Microsoft Azure
    VMware ESX Server
    Microsoft Active Directory
    Cloud Engineering Consultation
    Microsoft Server
  • $15 hourly
    I have more than 6 years working experience about Computer networking and Programming.I have been working with radius server, website design and development, ISP management and billing software based on FreeRadius for 4 years globally. I am a professional CCNA and CCNA security certified Engineer. I love my work actually and create my creative portfolio to use my best skill and with client satisfaction. Welcome to profile and my previous work portfolio. Thanks ! Biswajit Bhowmik
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    Ubiquiti
    Network Design
    Network Security
    MikroTik
    Cisco IOS
    Bash Programming
    Payment Gateway Integration
    Red Hat Enterprise Linux
    Cisco Certified Network Professional
    PHP
    MySQL
    API
    JavaScript
  • $50 hourly
    End-to-end Cloud Wi-Fi network and Captive Portal specialist, who likes to push the boundaries of what Network devices can and cannot do. I help create custom-made cloud-controlled Wi-Fi networks. My ideal system uses OpenWRT firmware on Atheros Wi-Fi router, with a LAMP stack on the cloud controller and FreeRadius for WiFi user's accounting and session control. Proud to have implemented custom cloud Wi-Fi systems for 23 highly successful Wi-Fi network brands in 18 counties, which help more than 2 Million users get online every month.
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    Computer Network
    Linux
    Virtual LAN
    Raspberry Pi
    WiFi
    Embedded Linux
    PHP
    WooCommerce
    Wireless Network Implementation
    MikroTik
    OpenWrt
    MySQL
  • $40 hourly
    My working practice is 10 years in a local ISP meganet.md, it's about 2000 home customers and 500 small companies. Based on Gpon equipment, including wireless and ethernet networks on Mikrotik, Cisco, PFsense, Fortigate, and Ubiquiti. My training/certifications: MikroTik MTCNA(network associate), MTCRE(routing engineer), MTCEWE(enterprise Wireless engineer), MTCTC(traffic control) certificates. UNS (Unifi network specialist) UEWA (Ubiquiti Enterprise Wireless Admin) Also, I work with RIPE for BGP database Integration, and also have a certificate from RIPE for that. I can be useful with network administration, configuration, network design, and architecture. Solve any network problems. Create an automatic monitoring system for your network, which logs and messages for all events. I set up an Asterisk server based on Elastix. IPTV service based on Multicast/unicast IPTV stream and middleware stalker. I manage ESXi VM stations with virtual machines. I know protocols: BGP, OSPF, VLAN, IPoE, PPP, PPTP, L2TP, DHCP, DNS, NTP, SMTP, SNMP, STP, RSTP, SIP, SSH, Telnet, traceroute, ping, FTP, TFTP, HTTP, HTTPS, POP3, Imap, NV2, Nstreme, WiFi, CAPsMAN, CAP, 802.11a/b/g/n/ac/ax/ad, mesh, hotspot, Access Lists, DFS, WPS, static routes, PIM, IGMP, IGMP proxy, IPv4, IPv6, ICMP, TCP, UDP, HLS, RTP, and more else.
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    Multiprotocol BGP
    Ingress Filtering
    Mikrotik RouterBOARD
    OSPF
    MikroTik RouterOS
    Fiber Optics
    PfSense
    Firewall
    Fortinet
    MikroTik
    Zabbix
    Ubiquiti
    VPN
    Network Design
  • $140 hourly
    🟢 Available Now 🔝 *** EXPERT-VETTED | TOP-RATED PLUS - Top 1% Network & Virtualization Expert *** with 100% JOB SUCCESS. 👌 A HIGHLY SKILLED SUBJECT MATTER EXPERT (SME) NETWORK and Virtualization (VCF, NSX-T, AVI and vRealize) in Upwork. Specialized in modern technologies and engineering aspects with a wide range of analytical, configure, administer, manage, and troubleshooting skills. 🥇 Here are the certifications that I have: ✔️ 5x CCIE #37259 (Wireless | Data Center | Security | Service Provider | Enterprise Infrastructure) ✔️ 3x JNCIE ( Juniper Data Center#88 | Security#352 | Enterprise#615 ) ✔️ Cisco Certified Design Expert ( CCDE #2016::44) ✔️ VMware Certified Implementation Expert - VCIX-NV (3.x) | VCIX-DCV (7.x) | VCP-DCP6.5 (Specialized in NSX-T 3.x, NSX 4.x , vSphere 7.x , vSphere 8.x, VSAN, Avi Advanced Load Balancer [ALB] ) ✔️ vSphere/NSX 4.x with Tanzu and Kubernetes expert ✔️ DevNet ✔️ Redhat RHCSA 💥 I take up projects and responsibilities only when I am confident and only when I can provide 100% satisfaction for my client. + 12 years experience as Senior Network Engineer / Network Architect + 7 years experience as TAC Lead Solutions focused meticulous and result-oriented Senior Network Engineer professional offering above 18 years of a successful career in the IT & Telecom arena distinguished by commended performance and proven results. Network Engineering Key Qualifications: ✅ Deep understanding of Routing protocols and Overlay - EIGRP, OSPF, IS-IS, BGP, MP-BGP, VRF, Multicast, AnyCast, MPLS, L2VPN, L3VPN, MPLS-TE, RSVP, LLDP, DSCP/QoS, VXLAN, EVPN, SD-WAN, SDA, ACI, DNA Center ✅ Experience with Routing & switching platforms - Cisco Router ASR9K, ASR1K, CRS, NCS, 7500, 7600, 7200, CSR, 3900, 2800, Catalyst 9200, 9300, 9400, 9500, 9600, 8200, 8300, 8500, 6500, 6800, 6500, 4510, 4948, 3850, 3700, 3560, 2960, Nexus 9K (NX-OS, ACI), 7k, 5k, 3k, 2k, Cisco ASA55xx, FTD, FMC, Juniper QFX5100, QFX5110, EX 9200, 4500, 4300. 3300, 2200, SRX) ✅ Knowledge of Wireless standards and protocols - WPA/WPA2, 802.1x, 802.11a/b/g/n/ac/r/k, CAPWAP, RMM, WMM, X.509, CA Authority, MDM, AAA, Kerberos, Captive Portal, Guest Access, Posturing, Profiling, DACLs, PACLs ✅ Experience and deep understanding of AAA appliances - Cisco ISE, Cisco Unified Computing System UCS B Serious, UCS C Serious, Cisco WAAS, ACS, NAC, AAA, Single Sign-On. ✅ VCF and NSX-T Architecture and Design. Focused virtualization  Full Stack SDDC and VCPP also I am practicing NSX-V, NSX-T, Multi-Tenancy Architecture, vCloud Director, vCloud Availability, vRealize Suite, vSAN, VXRAIL, Horizon View, Physical SAN storages (iSCSi, Fibre Channel) and Velocloud (SD-WAN) ✅ Linux, personal, KVM, OVS, OpenFlow, NFv (CSR 1000v, vSRX, or related NFv experience) ✅ Proven track record of excellence in analyzing business requirements to develop technical network solutions and their framework; Leadership role on network infrastructure projects to design and architect large-scale networks. ✅ Instrumental in developing architectural strategy, including technology standardization and modernization of enterprise, data center, and disaster recovery network infrastructures. ✅ Adroit in writing reference architectures and strategic roadmaps for network & and network security technologies, and solution architectures for various infrastructure initiatives ✅ Synchronize with other Architects in designing solutions that are reusable, quick to market, and lower the total cost of ownership. ✅ Highly articulate, demonstrating exceptional relationship-building, communication, analytical and interpersonal skills. ✅ Specialized Cisco ISE infrastructure deployment administration and operations as well as extensive experience in dot1x configuration and troubleshooting for wired and wireless networks. Wired and wireless guest portal deployment expert.. ✅ Extensive experience configuring and troubleshooting AnyConnect User tunnels and Management tunnels by using certificate and ISE for authorizing the group policies along with Hostscan and posture pre-deploy module. 💥Joint adventure with a partner that provides popular cloud expertise as follows; ✅ Amazon Web Services (AWS) ✅ Microsoft Azure ✅ Google Cloud ✅ Alibaba Cloud
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    Cisco Certified Network Professional
    Juniper
    Cisco ACI
    Cisco Certified Internetwork Expert
    Network Design
    VMware vSphere
    Cisco Certified Design Expert
    VMware NSX
    Technical Support
    Data Center Migration
    Wireless Communication
    Virtualization
    Cisco ASA
    VPN
    Cisco ISE
  • $60 hourly
    Creative problem solver with a seasoned mix of broad internetworking knowledge. Expertise in virtualization, automation and all things containers!
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    Unix
    Cisco IOS
    Network Engineering
    Network Administration
    Information Security
    MySQL
    Linux System Administration
    Network Security
    System Administration
    DNS
    VPN
    Ubuntu
    Firewall
    DHCP
  • $125 hourly
    Hello! I'm Tristan Curtis, a Top Rated IT Professional / Software Engineer with a passion for helping people with their technical needs. Backed with a degree in Information and Network Technology, accompanied by multiple certifications, and strengthened by extensive hands-on experience, I am well-equipped to tackle virtually any challenge you throw my way! Understanding the need for prompt assistance, I strive to be available within a moments notice, day or night. I offer a wide array of services including, but not limited to Web Application Development ▪️ Backend: PHP, Laravel ▪️ Frontend: Vue.js, JavaScript, jQuery, HTML, CSS, Sass, Bootstrap ▪️ Databases: MySQL, SQL Server, MariaDB, PostgreSQL ▪️ Specializes in: architecting complex web applications from scratch based on a provided design Web Server Administration ▪️ Troubleshooting issues with Nginx, Apache and WHM/cPanel ▪️ Fine-tuning PHP FPM for optimal scalability ▪️ Installing SSL certificates and addressing renewal issues with LetsEncrypt / Certbot ▪️ Migrating websites from one hosting company to another Network Administration ▪️ Proficient in managing networks powered by the following vendors: UniFi, pfSense, MikroTik, Cisco ▪️ Expertise in deploying and troubleshooting wireless connectivity ▪️ Strong knowledge of VPN connectivity for remote access and site-to-site connections ▪️ Experience developing custom splash pages / captive portals to authorize wireless connections Desktop Administration ▪️ Experience with the following operating systems: Windows, Mac OS, Ubuntu and various other Linux distros ▪️ Virtual desktop administration utilizing VMware Horizon Database Administration ▪️ Experience with: MySQL, MS SQL Server, MariaDB and PostgreSQL ▪️ Familiarity with: Google Cloud SQL and AWS RDS Virtual Infrastructure Administration ▪️ Proficient in VMware ESXI/VMware vCenter and Hyper-V Email Administration ▪️ Setting up SPF, DKIM and DMARC for enhanced email security ▪️ Troubleshooting email deliverability issues ▪️ Seamless migration of email from one platform to another ▪️ Well versed in Google Workspace and Office 365
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    VMware Administration
    Data Migration
    Email Deliverability
    Web Hosting
    Twilio API
    Domain Migration
    MySQL
    Network Administration
    Laravel
    SSL
    PHP
    Ubiquiti
    DNS
    System Administration
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