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UDP

2 articles tagged with “udp”

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How to Check if a Port Is Open (Windows, macOS & Linux)
port tcp networking troubleshooting server udp

How to Check if a Port Is Open (Windows, macOS & Linux)

Check if a port is open with telnet, netcat (nc), nmap, PowerShell Test-NetConnection and /dev/tcp on any OS — plus how to monitor ports continuously.

May 31, 2026 8 min read
HTTP/3 & QUIC Monitoring: What Changes and What to Watch
http-3 quic performance monitoring tls cdn networking udp latency

HTTP/3 & QUIC Monitoring: What Changes and What to Watch

How HTTP/3 and QUIC change monitoring: UDP 443, 0-RTT, connection migration, fallback to HTTP/2, and the new failure modes and metrics you must watch.

May 29, 2026 9 min read

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