I help businesses design, configure, troubleshoot, and optimize secure network infrastructures. My work covers LAN/WAN networks, VLANs, routing, switching, VPN, firewall rules, Wi-Fi, and multi-site connectivity.
Designing reliable and scalable business networks based on real operational needs, including topology planning, segmentation, performance optimization, and secure connectivity.
Configuration and optimization of LAN and WAN environments, including IP addressing, VLANs, inter-site connectivity, routing policies, and stable communication between locations.
Troubleshooting routing, switching, VLAN, gateway, loop, latency, packet loss, and connectivity issues to restore stable network performance.
Configuration and troubleshooting of site-to-site VPNs, remote access VPNs, secure tunnels, encryption settings, and access policies for users and branch offices.
Reviewing and optimizing firewall rules, NAT policies, traffic filtering, port forwarding, and access control to improve security without blocking legitimate business traffic.
Diagnosing Wi-Fi coverage, roaming, interference, authentication, DHCP, VLAN, and performance issues to improve wireless stability and user experience.