Install and set Gufw-ufw GUI firewall in Ubuntu 8.10

Gufw-ufw graphic interface firewall, customized for Ubuntu, deb installation package is easy, in addition, it can be automatically started with the Ubuntu 8.10 system, the full Chinese interface, and convenient settings of allow/block IP addresses or service or network segments, we recommend that you install and use a business computer with high requirements on system integrity and a new user who wants to study Linux port settings.

First look at the installed Gufw-ufw in Ubuntu 8.10 (figure 1)

Despite the scarcity of Linux viruses, it is recommended that business computers (especially those connected to the Internet) install and enable firewalls, install anti-virus software (such as red umbrella), and scan them once a month.

How to enable Gufw-ufw graphic interface firewall: Alt + F2 → enter "gufw" → Press "run" button (or enter the Enter key)

It is easier to configure iptables by yourself.

Known BUG in Gufw: Custom rules may not be deleted, especially when you create incorrectly formatted rules.

Solution:

Sudo gedit/var/lib/ufw/user. rules

Delete unnecessary rule items, save, and restart Gufw.

How can I start with the system?

This is the graphic interface of ufw, and ufw is the kernel-level firewall called iptable, Which is started when you start the system, you don't want to skip the tray icon after Windows is started. That is to say, if you enable the firewall in it, deleting it will not affect the operation of the firewall in the future.