Firewall in ubuntu 18.04

Disable ufw

$ sudo ufw disable
Firewall stopped and disabled on system startup

Source: linuxconfig.org

Firewall in ubuntu 18.04

Managing UFW from command line
UFW ( Uncomplicated Firewall ) firewall is a default firewall on Ubuntu 18.04 Bionic Beaver Linux.
Check a current firewall status
By default the UFW is disabled. You can check the status of your firewall by executing the following linux command:

$ sudo ufw status
[sudo] password for linuxconfig: 
Status: inactive

For more verbose output append word verbose to the above command:

$ sudo ufw status verbose

Enable Firewall
To enable firewall execute:

$ sudo ufw enable
Command may disrupt existing ssh connections. Proceed with operation (y|n)? y
Firewall is active and enabled on system startup

Firewall, is now enabled:

$ sudo ufw status
Status: active

Source: linuxconfig.org

Similar codes

3 votes106 views1 answer
Bash split file into multiple files
Shell/Bash
1 vote95 views1 answer
Linux opened ports
Shell/Bash
1 vote187 views1 answer
How to Rename or Move files in GIT
Shell/Bash
0 vote108 views1 answer
Play vlc as root kali
Shell/Bash
0 vote103 views1 answer
Windows 10 open the start shortcut folder
Shell/Bash
0 vote95 views1 answer
Xampp phpmyadmin not found
Shell/Bash
11 votes110 views5 answers
Pm2 run
Shell/Bash
1 vote105 views4 answers
Remove git tag
Shell/Bash
3 votes113 views1 answer
Composer install production
Shell/Bash
0 vote104 views2 answers
How to show a tag in git
Shell/Bash