Libre Things

The server hosting this blog respond on all ipv4 TCP ports from 1 to 65535.

See: portquiz.positon.org

The following URLs should also work if you are not filtered :

• portquiz.positon.org:443
• portquiz.positon.org:8080
• portquiz.positon.org:8

This allows you to test what TCP ports are filtered by your local network.

Command line example with netcat:

$ nc -v portquiz.positon.org 1
electron.positon.org [178.33.250.62] 1 (tcpmux) open
$ nc -v portquiz.positon.org 65535
electron.positon.org [178.33.250.62] 65535 (?) open