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

Disable ufw

$ sudo ufw status
Status: inactive

Source: linuxconfig.org

Similar codes

5 votes113 views2 answers
Linux show which serial ports are in use
Shell/Bash
17 votes122 views6 answers
Git remove ignored files
Shell/Bash
2 votes131 views1 answer
Ubuntu cleanup systemd journal
Shell/Bash
3 votes106 views2 answers
Exit telnet
Shell/Bash
0 vote117 views1 answer
Create file in linux using cat
Shell/Bash
0 vote123 views1 answer
Android studio git is not installed
Shell/Bash
0 vote174 views2 answers
Turn off history bash mac
Shell/Bash
5 votes107 views2 answers
Git origin command
Shell/Bash
1 vote111 views2 answers
Delete everythng after a certain commit
Shell/Bash
2 votes123 views2 answers
Compile electron app
Shell/Bash