UFW
The Uncomplicated FireWallPublished with SteemPeak

SUMMARY
001 installation ......................................................... 19-06
002 base ................................................................. 19-06
003 ssh .................................................................. 19-06 new
#003
003 SSH
[00] # ufw reset // reset
[01] # ufw enable // enable
[02] # ufw status // status
[03] # ufw status verbose // status
[04] # ufw allow ssh // allow ssh
[05] # ufw reload // reload
[06] # ufw status verbose // status
[99] # ufw status numbered // status
002 BASE
[00] # ufw status // status
[01] # ufw reset // reset
[02] # ufw enable // enable|disable
[99] # ufw status // status
[00] # ufw status verbose // status
[01] # ufw reset // reset
[02] # ufw disable // disable
[03] # ufw enable // enable
[04] # ufw default deny incoming // deny
[05] # ufw default allow outgoing // allow
[99] # ufw status verbose // status
001 INSTALLATION
# apt install ufw // installation
$ apt-cache show ufw // package information
$ man ufw // source
/etc/default/ufw // configuration file