upbeat rapids
Is there a way or log somewhere which shows attempts by programs to send data outwards? I have a program which is supposed to scan for other devices on the same LAN network and it is stopped working.
Note I am aware of var\log\ufw.log
I am after something that makes sense and shows what ports the specific programs are using.
verbal bane
So to check for listening ports, Mint's Firewall app will do this (see the Report tab).
Or via a terminal, sudo ss -tulpn
(Note that this only shows ports being listened for, not connected to)
If you want to see network communications in realtime, WireShark has been a standard tool for this use for a long time.
upbeat rapids
So to check for listening ports, Mint's Firewall app will do this (see the `Repo...
Ahh ok , thanks for the response, it shows the application as using port "53745" but I seem to recall there is only about 25550 ports that can be used?
verbal bane
That can't be true, at least one application I know will listen to port 25565.
I believe it stops at 65535: the limit of an unsigned 16-bit address.
upbeat rapids
ahh my information is wrong then, but lucky me as soon as I add the rule the concerned software started working so I have clearly found the solution.!