firewall screw up ?

[low umbra]

Installed Sunshine to stream dpwnstairs. Noticed in GUFW that it was logging certain port access and so I added rules from the log (pic) . I did this without modifying them in anyway (see pic) and probably exposed for 10 monutes

Questions

1. Have I caused a security issue here, opening up those ports on my PC up to the outside world? I am behind a router that has a hardware firewall. 2. Do I need to reinstall?
2. What best practice for only allowing LAN access through GUFW

Thanks in advance

[stoic nimbus]

If you have a hardware firewall then no, those ports are not open (or shouldn't be) open to the outside.

If however, those ports are open on the firewall before the outside, then yes.

There is a way you can permit access to certain ports only from certain IP ranges but I forget exactly how you do that.

Source: Did this now years ago for my own media server at the time with a very janky external access setup.

@low umbra

[low umbra]

Thanks @stoic nimbus ..I will double check my hardware firewall. In GUFW you can restrict access from a given IP and I have done this in the past to a local address but, like you it was a long time ago and wasn't at the forefront of my mind yesterday