Linux firewall blocking coneection (sudo ufw enable)

[roriscrave]

Hello everyone, when I use 'sudo ufw enable', I can't log in to the game anymore, he refuses the connection.
If i disable, i can login.

is it blocking any door? how do i release?

 

[Akela]

If your access is via SSH, and you're using ufu on Ubuntu (or probably other Linuxes), probably port 22 is blocked.

Link:

How To Configure Firewall with UFW on Ubuntu Linux

The firewall prevents unwanted networks inside a system. In this post, we are going to learn how to configure the firewall with UFW on Ubuntu Linux.

www.ubuntupit.com

ufu command that will help with port 22 (or whatever port is the problem - just substitute for "22"):
sudo ufw allow ssh

More links:
IIRC the first link below is easier, the second one is better, neither is perfect (correct but incomplete explanations of some important parameters).

How to Delete UFW Rules in Ubuntu

Here learn how to delete UFW rules on Ubuntu. There are two ways to delete UFW rules by number and specification.

linoxide.com

An Introduction to Uncomplicated Firewall (UFW) - Linux.com

One of the many heralded aspects of Linux is its security. From the desktop to the server, you’ll find every tool you need to keep those machines locked down as tightly as possible. For the longest time, the security of Linux was in the hands of iptables (which works with the underlying...

www.linux.com