Senior Network & Security Engineer with 12+ years of experience designing, implementing, securing, and supporting enterprise IT infrastructure. In addition to network engineering, I also have experience as a Full Stack Developer, building web applications and APIs using modern frameworks. I specialize in: • Cisco Routing & Switching • Fortinet (FortiGate) Firewalls • VPN Deployment & Troubleshooting • Network Security • LAN/WAN Design • Network Architecture & Planning • Microsoft Visio Network Diagrams (HLD/LLD) • Technical Documentation & SRS Writing • IT Infrastructure Assessments • Wireless Networks I have successfully delivered projects for organizations requiring secure, scalable, and highly available network environments. My expertise includes firewall configuration, network optimization, security hardening, infrastructure documentation, and technical report writing. Why clients hire me: ✓ 100% Job Success ✓ 70+ Successfully Completed Projects ✓ Fast Communication ✓ Enterprise Networking Experience ✓ Professional Documentation Standards

I'm a Network and Security Engineer with over 5 years of experience and a Top Rated Freelancer on Upwork. I hold Cisco CCNP Enterprise & Security, Fortinet NSE4/NSE5 and Palo Alto PCNSA/PCNSE certifications. I specialize in firewalls, VPNs, and network troubleshooting with Cisco, Fortinet, and Palo Alto – ensuring uptime, performance, and security for your business. ✅ How I can help you: • Secure your network against threats using robust firewall and VPN solutions • Optimize network performance for critical business applications • Implement resilient network architectures with redundancy and failover • Troubleshoot and resolve network outages rapidly to minimize downtime. 🌍 Core Skills: • VPNs: IPsec, SSL, L2TP, PPTP, OpenVPN • Routing & Switching: BGP, OSPF, VLANs, EtherChannel, HSRP, VRRP, STP, VTP • Firewalls & Security: Cisco ASA, Firepower, Fortigate, Palo Alto, pfSense, SonicWall, Ubiquiti • Wireless: Cisco, Ubiquiti, Aruba, Fortinet, and Ruckus APs 🏆 Certifications: • Cisco: CCNP Enterprise, CCNP Security, CCNA CyberOps, CCNA • Fortinet: NSE4, NSE5 • Palo Alto: PCNSA, PCNSE • Juniper: JCIA • Aruba: ACMA (Mobility), ACSA (Switching) 🛠️ Hands-On Experience: • Cisco: ISR 1000, 4000, ASR 1000, Nexus 9200, 9300, 9500, SG- 300, SG-350, SG-500 ASA 5505, 5506-x • Cisco Umbrella, Meraki, FMC, FTD, Duo, AMP for Networks • Wireless Solutions: Cisco 9100 series APs, Ubiquiti APs, Aruba 635 APs, Fortinet and Ruckus APs for enterprise Wi-Fi solutions • Palo Alto: PA-400 series, PA-800 series, PA-1400 series, PA-VM, Panorama • Fortigate: 40F, 60F, 80F, 100F. • Juniper: EX2300, EX3400, EX4300 • HPE: Procurve 2650 and 2910 • Aruba: 8325, 6200F • SonicWall • pfSense, OPNSense, CheckPoint, TP-Link, Fritzbox 📩 Let’s secure and optimize your network together! Send me a message – I would love to help you!

With 8+ years of hands-on experience in networking protocols, cloud computing, and cybersecurity, I deliver fast, reliable, and expert solutions to your toughest network and security challenges. If you want to save time and avoid costly trial-and-error, I’m the skilled professional you need. Why work with me? ☞ Certified SOC Analyst (CSA), CCNP Security, CCNA, Huawei HCIP Engineer, Luna HSM Pro Engineer. ☞ Expertise in network design, deployment, troubleshooting, security management, and automation. ☞ Proficient with Cisco, Juniper, Fortinet, Huawei, VMware, NetApp, and many more. ☞ Skilled in handling LAN/WAN/WLAN, firewalls, load balancers, SAN, and cloud infrastructure. ☞ Strong focus on performance optimization, monitoring, and documentation. Bonus: FREE 1-on-1 consultancy session — let’s discuss your network or security challenges and create a plan that fits your needs. Ready to secure and optimize your network? Contact me to get started!

Hi! I’m here to help you resolve your networking challenges with extensive experience across multiple platforms, including Mikrotik, Cisco, Juniper, and Ubiquiti devices. With over 12 years of professional experience, I’ve managed complex networking environments, optimized infrastructure, and implemented both small- and large-scale network solutions. My Core Skills Include: Routing and Switching: I have deep expertise in the design, configuration, and troubleshooting of a wide range of routing and switching protocols. Whether you’re looking to improve traffic routing or ensure network redundancy, I can implement: • BGP (Border Gateway Protocol) • OSPF (Open Shortest Path First) • RIP (Routing Information Protocol) • PBR (Policy-Based Routing) • Static Routing and VLAN • Failover Solutions Wireless Solutions: I have vast experience in designing and deploying wireless solutions that provide robust, scalable coverage for different environments: • WiFi Hotspot Implementation • WiFi Roaming • Standalone AP and CAPsMAN Monitoring & Network Management: Real-time monitoring, logging, and alerting can prevent downtime and keep your network performing at its best. I work with: • The Dude • SNMP, Netflow • PRTG and SolarWinds • SevOne PM • NetBox VoIP and Server Management: I specialize in deploying and maintaining communication systems (VoIP) and backend infrastructure: • Asterisk and FreeSwitch • Server Management • Dolibarr and OpenERP Virtualization and Cloud: Need to set up virtual machines or integrate cloud services? I have hands-on experience in: • VirtualBox • VMware-ESXI • ProxMox Network Security: I offer full security solutions from basic firewall setups to comprehensive multi-layered security frameworks: • VPNs (IPsec, PPTP, L2TP, OpenVPN, WireGuard) • ACLs (Access Control Lists) • Firewalls (Mikrotik, Cisco ASA, Juniper SRX) • Security Audits Devices and Platforms I Work With: • Mikrotik Routers: Devices such as CCRxxx, RBxxxx, AHxxx, cAP ac, and others. • Mikrotik Switches: Various CRS series, including CRS328-24P-4S+RM, for both core and edge deployments. • Cisco Routers: Including ISR 800, 4500, 1700, 2800, 2900, 3900 series, and ASR 1001-X. • Cisco Firewalls: ASA 5500, 5500-X, and Firepower 2100 for network security. • Cisco Switches: Extensive work with C2950, C2960-X, C3560, C3850, C4500, C6500, and more. • Juniper Routers and Switches: Including MX480, MX960, MX104 routers, and EX2200, EX4200, EX4300 switches. • Ubiquiti: EdgeRouter, UniFi series for efficient, scalable network deployment. • Dell and IBM Servers: Deployment, management, and configuration. Network Design and Optimization: I am proficient in assessing existing network setups and recommending improvements to streamline performance, increase security, and reduce latency. Whether you’re setting up a new data center or scaling up your current infrastructure, I can guide you through choosing the right devices and configurations for optimal results. Additionally, I provide consultation on network best practices, compliance with industry standards, and cost-effective hardware recommendations. NMS, NPM and DCIM Solutions: I can also deploy fully customized solutions for Network Monitoring System(NMS), Network Performance Monitoring (NPM) and Data Center Infrastructure Management (DCIM). I’ve worked extensively with The Dude, SevOne, NetBox and offer solutions that can be integrated into your existing infrastructure under the management platforms. Project Experience: With over 12 years in the field, I’ve successfully deployed over 1,000 Mikrotik devices and managed a variety of network projects involving multi-vendor environments. From small office networks to large-scale Network setups, I’ve managed both deployment and long-term support. I am skilled in troubleshooting, optimizing existing systems, and ensuring the reliability and scalability of networks. How I Can Help You: Whether you need help with routing and switching, setting up firewalls, designing a wireless network, deploying VoIP, or managing servers and virtual environments, I’ve got you covered. I can help you plan and deploy the best network solutions tailored to your unique needs. Plus, I’ll ensure ongoing support, so your network always performs at its best. I look forward to working with you and making sure your network infrastructure is both powerful and reliable! Let’s connect and discuss how I can help you achieve your goals.

Hi, Need any help in your network infrastructure? I am glad to provide any kind of network solution that persists in my area of expertise. I help my clients to grow their businesses by improving their network efficiency as well as security and ensuring the best experiences for customers so that they can revisit me and grow their businesses together. I have plenty of experience in installation, configuration and maintenance of different Cisco products. I also have experience working with some global vendor like Dimension Data, Logicalis Hongkong, Global NTT, British Telecom (BT) etc with different projects. I can provide a vast range of services, from Virtual Assistance to developing big projects. I can serve you better than anyone else for all your IT needs. Some of my recent projects include the below device installation Meraki - MR, MS, and MX series installation Routers: Cisco: 1900, 2900, 2800, 2600, 7206, 3745,ISR 4300 L2/L3 Switch: Cisco(Catalyst): 2800,3650, 3750, 3850, 4500, 6800,9300 Security Device :Cisoco FPWR 1000,1100,2100,3100 series Cisco ASA 5500-X Series, NGFW, ESA, CheckPoint NGTP,NGTX, Fortinate FG-80D, Watch Guard Servers: Dell Power edge T310, Hp Rx 2660, HP ProLiant DL360 Series Wireless Tools: Cisco Access Point :1800,2600,2700,2800,3800,9100 Aruba AP : 535,565, IAP installation. Wireless Controller : 2504,5504,5520,9800 Aruba 7200 mobility controllers. Wan Optimization: Riverbed: SteelHead CX Networking tools: GNS: Configuration testing for Cisco IOS Video Conferencing Tools Polycom RealPresence Group Series,Polycom VSX Endpoints, Polycom HDX Endpoints, Cisco Teleprasence SX20,Cisco MX300 G2 Key Certifications / Skills : 1. Cisco CCNP (Security Core) 2. Cisco CCNA (Routing & Switching) 3. Cisco CCNA-Security 4. Black Belt Meraki Deployment 5. Cisco Networking: On-Premise and Cloud Solutions (OCSE) 6. CyberOpsAssoc 7. Cisco Certified Design Expert (CCDE)

I design fit-for-purpose infrastructure that holds up under pressure without torching the budget. I build and run multivendor production environments where systems must behave predictably through load, change, and failure. I own systems end-to-end: architecture, deployment, operations, and incident response. I kill manual toil with IaC and repeatable workflows, eradicate configuration drift, convert tribal knowledge into clean diagrams, runbooks, and a single source of truth. Security is built into the design through segmentation, least-privilege access, and automated controls, with systems documented and monitored to support audits, security incidents, and ongoing operations. I’ve seen the carnage of failed changes, vague handovers, audit nightmares, and undocumented systems that bleed operational risk daily. That’s why I build lean, observable, boringly stable platforms that scale without drama and cost less to run long-term. Experienced across enterprise, data center, and cloud environments, with industry exposure spanning telecoms, vendor support, MSP operations, financial services, low-latency trading, and large-scale service providers. 💻TECH SKILLS🥷 🌐Networking: WAN, LAN, WLAN(Meraki, UniFi), VLANs, VXLANs, IPv6, NAT, RIP, OSPF, BGP, VRF, ACLs, QoS, VPNs, DHCP, DNS, NFV 📦Virtualization: VMware, OpenStack, Hyper-V, KVM, Proxmox, Docker, SR-IOV, SAN ☁️Cloud: AWS(EC2, VPC, Flow Logs, S3, IAM, CloudWatch, WorkSpaces, WAFR), Azure(VMs, AD, Networking), Google Workspace, Office 365 ⚙️OS: Cisco IOS, Cisco NX-OS, Dell OS10, Arista EOS, Windows Server(PowerShell, AD, Group Policy, Exchange), Linux(Bash, IPtables, Permissions, Nginx), macOS 🔐Security: Firewalls(Palo Alto, FortiGate, SonicWall), CASB(Netskope), SIEM(Rapid7), MDM(MaaS360), IAM(Okta, Centrify, CyberArk), Email(Mimecast) 🤖Automation: Python(Jinja2), APIs(RESTful, NETCONF, RESTCONF), XML, JSON, YAML, YANG, Terraform, Ansible, GitHub 🛠️Tools: Wireshark, Nmap, iPerf, Cisco CIMC, Dell iDRAC, Dell OpenManage, Veeam, OpenVAS, GitHub, Postman, ManageEngine, PRTG, Zabbix, Observium, Graylog, Passbolt, NetBox, Visio, Itemit

Welcome! If you're looking for an experienced IT specialist who can configure Juniper, Cisco, Ubiquiti, Huawei, Mikrotik routers and set up NMS servers, and troubleshoot server issues, your search ends here! With 6 years of industry expertise, specializing in network infrastructure and NMS server configuration, I provide a comprehensive range of services. MY SERVICE PROVIDE : ------------------------------------ ➤ Configure Routers (Cisco, Ubiquiti, Juniper, Mikrotik, Huawei & Vyos) ➤ Troubleshoot Network issues & Global Routing solution) ➤ Various tunnel configurations (EoiP, IPIP, GRE, IPsec, VRF, PPTP, L2TP, IKEv2 VPN, PPPoE, and VPLS.) ➤ Public IPv4 & IPv6 planning, advertising and configure failover & load balancing ➤ NMS server setup (PRTG, MRTG, LIBRA etc) ➤ Server Maintenance ➤ Routers scripting, Auto Backup, Schedule Backup WHY CHOOSE ME : ------------------------------------ ➤ Fully genuine and professional ➤ Work Fast and Easy Communication ➤ Unlimited revisions ➤ Future support ➤ High Quality Work will be delivered on time and in the best quality as per your requirements. Please feel free to discuss the requirements and after being satisfied please award me with the work. Thanks & Regards, T H Shaon

10+ years handling large Enterprise Networks. Expert in Juniper, Fortigate, Cisco, Arista, Palo Alto, and more.

I have over 12+ Years of working experience in the Networking Field. I am an enthusiastic NETWORK ENGINEER with the necessary drive and determination needed to resolve complex networking issues. Possessing effective organizational skills and excellent working knowledge of networking technologies and having a commitment to keep up to date with the latest developments. I’m an adaptable and efficient team player with excellent communication skills at all levels. Experienced in providing motivation, guidance, and an up-to-date networking consultancy service to clients. Now looking for a new and challenging network engineering task that will make the best use of my existing skills and experience and also further my career as a freelancer. Technical Skill Set Summary:::::::: • Cisco routers / switches / WLC • Cisco ASA / FTD / ISE / FMC • Cisco NX-OS • Network Automation using Python3 • Checkpoint Firewall & Endpoint Security • Sophos XG Firewall & Intercept X with advance EDR • Gateway Redundancy Protocols: HSRP / VRRP / GLBP • Routing: RIPng / OSPF / EIGRP / BGP / PBR / PfR / VRF • VLANs / STP / RSTP / Ether channel (LAG) • VPNs – GRE / IPSec / DMVPN • LAN-WAN / NAT / ACL • IPv4 / IPv6 • F5 Load Balancer • SIEM-Splunk, Qradar, Wazhu, Suricata, Elastic • Juniper Junos • Palo Alto Next-Generation Firewall • Fortinet Solutions- FortiGate Firewall, FortiMail email gateway, and FortiAnalyzer. • Juniper firewalls SRX Series • TCP/IP, DNS, DHCP • Wireshark • MikroTik • Virtualization: VMware vSphere 6.x • Windows Server 2012 R2 Qualifications: • Cisco Certified Specialist - Security Core (CCNP SCOR-350-701) • Cisco Certified Network Associate (CCNA-R&S) • Palo Alto Networks Certified Network Security Engineer (PCNSE) • APPLICATION DELIVERY FUNDAMENTALS (F5-101) • Fortinet Network Security Expert (NSE 1, NSE 2, NSE 3 & NSE 4) • JNCIA-SEC (JNCIA-SEC) • Junos (JNCIA-Junos)

Networks look like a puzzle to most people. To me, they're just a problem I know how to solve. What I deliver: Network audits & optimization Design & migration - new builds, office expansion, hybrid/cloud Security hardening - ACLs, segmentation, firewall policies, VPNs Troubleshooting escalations - when your team is stuck, I step in. Root causes, not symptoms. Mentoring / on-call - fractional architect for teams without a full-time role Technical depth: Areas and stack: Routing & switching - Multi-vendor. Security - PFSense, OPNSense, Fortinet, Palo Alto, Cisco ASA/FTD, VPNs, segmentation Linux - Any distro, bash scripting, performance tuning Virtualization - Proxmox, VMware, Hyper-V, KVM Automation - Ansible, Terraform Observability - Zabbix, Splunk, SNMP, syslog Background: 30+ years in the field, 7 as a Cisco Networking Academy Manager and Instructor. I've designed large-scale enterprise networks for government, healthcare, and finance — example a maternity center where downtime isn't an option, campus networks for universities, and an airport-wide wireless solution. I've delivered security projects following both international best practices and local regulatory standards. I've trained and worked alongside engineers across Australia, New Zealand, the US, and beyond, and I learn as much from them as they do from me. I work self-paced, lead or go solo, and I'm still adding tools: Proxmox and Splunk a few years ago, Ansible and Terraform last year. This year I'm diving into AI infrastructure — GPU clusters, distributed training, high-throughput data pipelines. I'm also building deeper into Python and scripting to support automation and development from the ground up. How I work: Clear communication, no jargon. English fluent. Documentation-driven: diagrams, runbooks, handoff notes. Available 20–40 hrs/week. Fixed-price or hourly — whatever fits. Ready to solve your network puzzle? Send me an invite.