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Hi, I'm a dedicated Cisco Certified Network Engineer with CCNA and CCNP certifications, specializing in designing, implementing, optimizing, and troubleshooting robust enterprise and SMB networks.With hands-on experience in Cisco routing and switching technologies, I help businesses build secure, scalable, and high-performance network infrastructures that minimize downtime and support business growth. Whether you need a new network deployment, migration to SD-WAN, firewall configuration, VPN setup, or ongoing network support, I deliver reliable solutions tailored to your requirements.What I Offer:Network Design & Implementation: LAN/WAN/MAN design, VLANs, inter-VLAN routing, STP, EtherChannel, and advanced routing protocols (OSPF, EIGRP, BGP) Cisco Infrastructure: Configuration and management of Cisco routers, switches (Catalyst, Nexus), wireless controllers (WLC), and Meraki devices Security & Firewalls: Cisco ASA, Firepower, ACLs, VPN (Site-to-Site & Remote Access), and network security best practices Troubleshooting & Optimization: Rapid diagnosis and resolution of complex network issues, performance tuning, and QoS implementation Automation & Monitoring: Basic network automation with Python and Ansible, plus tools like SolarWinds, PRTG, and Cisco DNA Center I am passionate about delivering zero-downtime migrations, enhancing network security, and reducing operational costs through efficient designs. Previous projects include full network overhauls that improved uptime to 99.99% and reduced latency significantly.I'm available for short-term gigs, long-term support contracts, or one-time consulting projects. Let's discuss how I can help strengthen your network infrastructure — feel free to message me with your requirements!Certifications:Cisco Certified Network Associate (CCNA) Cisco Certified Network Professional (CCNP) – Enterprise Key Skills: Cisco CCNA, CCNP, Routing & Switching, BGP, OSPF, EIGRP, VLAN, VPN, Firewall, Network Security, SD-WAN, Packet Tracer, GNS3, Wireshark

With 10+ years in network infrastructure and security, I help businesses resolve the issues that stop daily operations: failed VPNs, blocked firewall traffic, unstable branches, cloud connectivity and VoIP/SIP problems. My focus is simple: find the actual root cause, restore services with minimum disruption, and avoid risky trial-and-error changes on a live network. I have supported enterprise, government, data centre and multi-site business networks using Fortinet, Cisco and other leading firewall platforms, with hybrid connectivity across AWS, Microsoft Azure and Google Cloud. My "Zero-Risk" Methodology Many engineers rely on "guess and check" troubleshooting. I don't. I never make blind changes on a live production network. Before altering your setup, I map your current design, analyze your routing, and review firewall policies. I always pull backups, engineer a rollback plan, and execute controlled, fully documented changes. My goal is permanent stability, not temporary patches. Core Expertise & Outcomes Delivered: Firewall & Threat Management: FortiGate, Cisco, UniFi, and MikroTik. (Comprehensive policy audits, legacy rule cleanup, and strict hardening). Complex VPN Troubleshooting: Site-to-Site, Remote-Access, IPsec, and SSL VPNs. If your tunnel is unstable or failing, I will stabilize it. Cloud & Hybrid Infrastructure: AWS (VPC, Security Groups), Microsoft Azure (VNet, VPN Gateway, NSG), and Google Cloud. I build secure, seamless office-to-cloud and cloud-to-cloud bridges. VoIP/SIP Optimization: Resolving SIP registration failures, NAT traversal bugs, one-way audio, and call drops using precise QoS, Voice VLANs, and Cisco CUBE support. Advanced Routing & Switching: SD-WAN deployments, dual-ISP failover, VLANs, and comprehensive LAN/WAN/Wi-Fi troubleshooting. How We Can Partner: Emergency Troubleshooting: Rapid isolation and resolution of critical connectivity, routing, or security failures affecting your users. Network Health & Security Audits: Deep-dive reviews to identify vulnerabilities, clean up messy configurations, and provide actionable security roadmaps. Infrastructure Setups & Migrations: End-to-end planning for new branch offices, secure remote work environments, and physical security networks (CCTV/Biometrics). Retained Network Support: Dependable, on-demand escalation support for internal IT teams, MSPs, software companies, and business owners. My core technical experience includes: • FortiGate configuration, migration and troubleshooting • Cisco routers, switches, Firewall, Firepower, Voice Gateway and CUBE • Fortigate, Fortinet, Mikrotik, • IPsec, SSL and remote-access VPNs • Site-to-site VPN and multi-site connectivity • SD-WAN, dual-ISP failover and policy-based routing • VLANs, routing, NAT, DHCP, DNS and LAN/WAN troubleshooting • Firewall policy review, cleanup and security hardening • Wi-Fi, office connectivity and branch network support • AWS VPC, routing, security groups, VPN and hybrid access • Azure VNet, NSG, VPN Gateway, peering and hybrid connectivity • Google Cloud VPC, firewall rules, VPN and network access • SIP, NAT traversal, RTP, one-way audio and call-drop issues • Voice VLANs, QoS and firewall policies for voice traffic • Network diagrams, documentation and handover notes Where access permits, I take a backup, confirm the rollback plan, make controlled changes, test the traffic flow and document the result. This is especially important on production firewalls, remote branches, VPN tunnels and voice networks, where one quick change can affect another service. Let’s Secure Your Network Whether you need a one-time emergency fix, a comprehensive security audit, or ongoing support, I am here to help. Please share: Your primary firewall/hardware vendor and model. The exact issue or project scope (and any recent changes made). The number of sites or users affected. Once I understand your exact setup and the business impact, I will provide a clear, safe plan of action to get your network running flawlessly.

Highly experienced Network Engineer with over 7 years of experience in designing, implementing, and managing complex network infrastructures. My core area of expertise is in Cisco networking technologies, where I have gained extensive knowledge and hands-on experience in various Cisco products and solutions, including routers, switches, firewalls, and wireless networks. In my previous roles, I have worked on a variety of projects, including network design and implementation, network security, and network troubleshooting, and have been involved in all stages of the project lifecycle, from planning and design to implementation and maintenance. My technical skills include network design and architecture, routing and switching, VPNs, firewalls, wireless networks, network security, and network monitoring and management. I am also well-versed in industry-standard protocols and technologies such as TCP/IP, BGP, OSPF, SNMP, and VLANs. I have a strong commitment to delivering high-quality work and ensuring customer satisfaction. I am a great communicator and can work effectively with cross-functional teams, stakeholders, and customers. If you are looking for a highly skilled and experienced Network Engineer with expertise in Cisco, I would be happy to help you with your project.

CCSE, ITILv3 , Fortinet NSE4 CCNP R&S,CCNP Security. In the last 15 years, I have been working on various network products and have gained comprehensive experience in Cisco, Fortinet, SonicWall, Checkpoint, HP, F5, Trellix (McAfee) ENS/EDR technologies. I have been involved in the design, configuration, and troubleshooting of Network products. Firewalls: Cisco ASA & Cisco Firepower Fortigate UTM Firewalls Checkpoint management servers & Security Gateways. SonicWall TZ & NSA UTM Firewalls Pfsense Firewall ZTNA FortiClient ZTNA & FortiClient EMS. 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 Endpoint Security Trellis (McAfee) ENS & EDR

Hello My name is Mohit Kumar. I am from India and a certified Hardware & Networking engineer with more than 9 years of experience. I am dedicated, hardworking, and believe in maintaining strong professional relationships. I worked with NYC IT Works, a New York–based MSP company, from February to November. As of December, I am free and ready to join immediately. I can fix your Personal Computer by using Remote Connection, to easily help you with software installation and Hardware related issue, below are listed professional IT's I can handle in your personal computer system. Installation windows & linux Cleaning from viruses, spyware and malware. Speed up (optimization) Driver installation (compatible with Operating System) Problem diagnostic (software and hardware) Can help in gaining of lost password (win login) Upgrading of your Hardware for Better Performance Provide Network Related Issue WIFI Issue Virtualization with VMware workstation and oracle virtual box . web server (LAMP, IIS). Antivirus and windows update patch management Working on Team Viewer, Ammy admin, VNCViwer and Show My pc. IT security Incident monitoring and Management, Route cause analysis. Active Directory Services, DHCP. VPN Configuration OpenVPN and IPsec. Contact me for other type of problem you are having with your Computer, Laptop, and other devices. Please provide as much information about the problem you are having, I am here to solve problem Thank You

👋 Hi, I'm Hepshiba Beula, a Networking Engineer with 4+ years of experience specializing in Optical Networks (ONTs & OLTs), VoIP, PBX, Asterisk, Wi-Fi module development, and Network Administration. I have hands-on expertise in embedded systems, networking protocols, and firmware development for high-performance telecommunications solutions. Key Expertise: ✅ ONTs Development & Support – Data flow monitoring, VoIP support, OMCI stack enhancements ✅ Wi-Fi Module Engineering – Performance optimization, debugging, and system enhancements ✅ VoIP Network Enhancements – SIP signaling, VoIP debugging (Asterisk, Wireshark), FXS device integration, FreePBX deployment ✅ Network Administration – VLANs, switch-based configurations, traffic monitoring (Ixia, Spirent) ✅ Embedded Software Development – C programming, Data Structures, Linux-based development ✅ Packet Analysis & Debugging – Deep packet inspection, protocol debugging (Wireshark, Asterisk) ✅ OLT Support – Ensuring seamless integration and maintenance of Optical Line Terminals Professional Experience Highlights: 🔹 Optical Networks (ONT Development & OLT Support) Developed OMCI stack interfaces for ONTs, enabling seamless network provisioning. Worked on PON activation, MIB Upload, and software upgrades for Adtran ONTs. Designed and implemented CFM Protocol on Cortina-based targets. Monitored data flow and ensured VoIP support for ONTs in live network environments. 🔹 Wi-Fi Module Enhancement & Debugging Enhanced and maintained the BGW320 Wi-Fi module for AT&T residential gateways. Debugged and optimized Wi-Fi performance, including network stability and traffic flow. 🔹 VoIP & Network Optimization Implemented VoIP handling in FXS devices (Cortina 6xx, BRCM 8xx, 62x). Debugged VoIP packets using Asterisk, Wireshark, ensuring high call quality. Managed SIP signaling and VoIP enhancements for network efficiency. Has experience in deploying FreePBx on cloud server and configuration of trunk and SIP routing and extension 🔹 Network Configuration & Traffic Analysis Monitored and optimized network traffic using Ixia, Spirent for data packet analysis. Configured VLANs, switches, and network routing for optimal data flow. Tech Stack & Tools: 💻 Languages: C, Python, Shell Scripting 🛠 Tools: Git, JIRA, Bitbucket, Confluence, Perforce, Wireshark, Asterisk, IXIA, Spirent 📡 Platforms: Linux/Unix, Residential Gateways, Optical Line Terminals (OLTs), Optical Network Terminals (ONTs) I am open to networking, IT infrastructure, and embedded systems roles, bringing strong problem-solving skills and expertise in network administration, VoIP, and optical networking solutions. Let’s connect and collaborate! 🚀