ufw – Simple yet Powerful

Uncomplicated Firewall (ufw) on your Ubuntu can help managing netfilter firewall. Try today and secure your self on network.

# ufw app list
Available applications:
Apache
Apache Full
Apache Secure
CUPS
OpenSSH
Postfix
Postfix Submission

# ufw allow 80
Rule added

# ufw deny 80
Rule updated

# ufw status
Status: loaded

To                         Action  From
–                         ——  —-
22/tcp                     ALLOW   Anywhere
22/udp                     ALLOW   Anywhere
80/tcp                     DENY    Anywhere
80/udp                     DENY    Anywhere

# ufw help

Usage: ufw COMMAND

Commands:
enable                             enables the firewall
disable                            disables the firewall
default ARG                     set default policy to ALLOW or DENY
logging ARG                    set logging to ON or OFF
allow|deny RULE             allow or deny RULE
delete allow|deny RULE  delete the allow/deny RULE
status                              show firewall status
version                            display version information

Application profile commands:
app list                      list application profiles
app info PROFILE              show information on PROFILE
app update PROFILE            update PROFILE
app default ARG               set profile policy to ALLOW, DENY or SKIP

Installation:
sudo aptitude install ufw

Be secure or you will be screwed…