networking
Network-related issues and solutions
Discover if you need L2 or L3 managed switches for a 60-user network across 3 floors with VLAN segmentation for admin, users, printers, cameras, and selective NAS access from another VLAN. Hybrid topology guide included.
Optimal hub-and-spoke VPN architecture using MikroTik IPsec and OSPF for fault tolerance and performance across international boundaries.
Fix iptables -C 'Bad rule (does a matching rule exist?)' error for NAT PREROUTING REDIRECT rules visible in -t nat -L. Learn table mismatch, --to-ports syntax, hostname resolution, nftables issues, and exact verification with -S and iptables-save.
HTTP/3 QUIC protocol blocked in Russia due to ISP censorship. Learn why curl works but browsers don't, and discover practical solutions to bypass QUIC restrictions.
Learn how to monitor UDP ports on remote hosts using Zabbix without installing agents on target systems. Configure custom scripts and built-in checks for effective UDP service monitoring.
Assign multiple hostnames like nextcloud.local to Ugreen NAS 4800 Plus using local DNS (dnsmasq, Pi-hole) and Nginx Proxy Manager. Bypass Asus router DHCP limits for portless Nextcloud access across your network.
Learn how Helm handles externalIPs for Kubernetes services. Discover why manual configuration is required and best practices for managing externalIPs in Helm deployments.
Yandex Browser corporate edition (25.6.1.1048) blocks sites like Microsoft, HP, Samba.org—headers load but data hangs due to URLBlocklist policies. Diagnose via browser://policy, add URLAllowlist, or use Yandex VPN to resolve blokirovka saito v.
Learn how to set up a VPS proxy for accessing geographically restricted Russian resources like TI and Arduino. Effectiveness analysis and Roskomnadzor blocking considerations included.
HTTP/3 not working with Angie server in Russia due to ISP network restrictions and QUIC protocol blocking. Learn about technical symptoms, server configuration, and workarounds.
Learn why iptables -C command fails to recognize NAT rules and how to properly verify iptables NAT rules using the correct syntax with -t nat option.
Step-by-step guide to enable external SSH access to VirtualBox Ubuntu guest from internet via Windows host and router. Use bridged adapter, NAT port forwarding, or tunneling with security tips for optimal performance.
Comprehensive guide to troubleshooting OpenELB external IP assignment issues in Kubernetes. Learn to resolve 'no registered speaker' errors and configure your load balancer kubernetes setup properly.
Comprehensive guide to fix Warface connection issues where internet disconnects 20-30 seconds after entering the game. Includes router settings, port forwarding, and troubleshooting steps.
Step-by-step guide to configure port forwarding on Rostelecom RT-GM-2 router for RDP access. Troubleshoot common issues with NAT, firewall, and UPnP settings.
Complete guide to setting up MikroTik cAP XL ac as a wireless repeater without Ethernet cable. Step-by-step configuration, mounting instructions, and troubleshooting tips.
Learn how to configure GRE over IPsec on MikroTik router and VPS server. Step-by-step guide for secure GRE tunnel encryption, troubleshooting, MTU optimization, and WireGuard alternatives since IPsec over GRE is unsupported.
Layer 3 switches recommended for small orgs: unify networks with VLAN segmentation (admin/users), secure NAS access across VLANs via inter-VLAN routing, and dual GPON redundancy. Config guides and hardware picks.
Step-by-step methods to safely remove a stuck RJ45 connector from switch ports, wall keystone jacks, or laptop ports. Includes tools, PoE safety and prevention.
Why 200ms ping in Fortnite Creative but 40ms in Battle Royale? Causes like server routing, NAT issues, fixes with traceroute, ports, VPN, Net Debug Stats, and Epic support logs.