I install ufw, gufw & firestarter yesterday, but uninstalled them all today. Now, I find that I cannot access the server from outsite. When I could before. How can I debug whats blocking these?
Have you tried restarting the server? Although you have uninstalled the firewalls, their rules might still be active in the running kernel. (Run
I would run:
To see if you have the ports you want available allowed.
If you don't, I would recommend running something like:
to allow people to access your server on port 80, as an example.
Edit: Ah, I missed that you had uninstalled them.