Only turn off IPv6 if it is causing a real problem. For most people, IPv6 should stay on. But if a broken router, odd VPN, or cranky office network is making sites load like cold soup, disabling IPv6 can be a useful test. TLDR: On Windows, turn off IPv6 from your network adapter settings, or […]...

Use TCP when correctness matters, and use UDP when timing matters more than perfection. That single rule explains why web pages, file downloads, and logins usually prefer TCP, while games, live video, voice chat, and modern low-latency systems often favor UDP. TLDR: TCP checks, orders, and resends data, which makes it reliable but sometimes slower. […]...

A gateway is the exit point a device uses to reach another network, and the default gateway is the exit it uses when no more specific route is known. In most home and small office networks, the default gateway is the local router, but the two terms do not mean the same thing. TLDR: A […]...