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

1 vote202 views1 answer
Install mongodb on manjaro linux
Shell/Bash
9 votes196 views2 answers
-bash: : Permission denied
Shell/Bash
1 vote179 views2 answers
Ubuntu software doesn't work 20.04
Shell/Bash
2 votes193 views2 answers
Remove dbeaver ubuntu 7.1.5
Shell/Bash
0 vote184 views1 answer
Install monodevelopment arch linux
Shell/Bash
2 votes200 views1 answer
JSX element implicitly has type 'any' because no interface 'JSX.IntrinsicElements' exists.ts(7026)
Shell/Bash
0 vote155 views2 answers
Git unable to connect to cache daemon: Permission denied
Shell/Bash
3 votes196 views2 answers
Uninstall webpack globally
Shell/Bash
0 vote153 views1 answer
How to use sourcetree
Shell/Bash
1 vote186 views4 answers
Jdk ubuntu
Shell/Bash