networking

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.

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 set up a VPS proxy for accessing geographically restricted Russian resources like TI and Arduino. Effectiveness analysis and Roskomnadzor blocking considerations included.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Configure Proxmox VE cluster network with LACP bonding on 25G fiber for Corosync/migration, separate management VLAN on vmbr1, VLAN-aware vmbr2 for VMs. Full /etc/network/interfaces examples, testing, no host routing needed.

Top gigabit routers handling 1000 Mbps NAT throughput with 5+ gigabit ports: MikroTik RB4011, x86 Protectli/Qotom on OpenWrt. Fix TP-Link Archer C6U NAT table limits and concurrent connections issues.

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.

Connect Alcatel HH71 as a 4G modem to an Asus router: LAN->WAN cable, enable Asus DHCP and IP reservations so devices retain the same IP after reboot.

Chromium WebSocket handshake timeouts on Ubuntu 22.04: 'websocket connection failed' or 'opening handshake timed out' in Chrome/Brave, works in Firefox. Causes HTTP/2 Extended CONNECT (RFC 8441), IPv6, systemd-resolved. Diagnose with chrome-net-export, fixes included.

Master iptables rules for WireGuard wg0: drop all incoming packets except UDP port 51821. Why ACCEPT+DROP beats single negated rule. Avoid pitfalls like negation logic, rule ordering, connection tracking, INPUT vs FORWARD chains.