Firewall port to allow for push notifications

[bbiw]

Hello all,

i've installed an app that warns me e.g. in the case of fire. It was removed from the OpenStore, but it's source code can be found here: https://github.com/S60W79/warnapp-deutschland or https://gitlab.com/S60W79/warnapp-deutschland.

The problem is i've activated ufw and because of that i don't receive the push notifications.

Does anyone know which port to open for this or a way to find out which port is used or which firewall rule to set?

Thanks all!

[bbiw]

Please help!!!

[ikoz]

@bbiw have you tried running lsof with firewall disabled or enabling ufw logs to see which port is being blocked?

[bbiw]

@ikoz I think i have found the solution. After allowing outgoing traffic to 188.166.175.79 port 5001 the notifications seem to work. lsof, netstat and a little bit more googling helped me. After disabling ufw; lsof and netstat were showing the IP and port after a notification came in. Port 443 is needed, too. Unfortunately logging with ufw does not work, but who cares, i didn't need it. Thanks for pushing me into the right direction, this warning app could save a life.