# ProtocolLab HQ

HTTP codes Ports

TCP Port

23 Telnet

Legacy unencrypted remote terminal. Obsolete and insecure — replaced by SSH.

Protocol: TCP · Port: 23

ProtocolLab HQ — HTTP codes and ports, looked up fast.

A quick developer reference for HTTP status codes and common network ports, compiled from the relevant RFCs and IANA registries. Port assignments and status semantics occasionally change; check the current standard when it matters.