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ufw
---
On installation, ufw is not automatically enabled. To load the firewall and
enable it on boot, run:
# ufw enable
See 'man ufw' and README for more information.
Upgrading
---------
It is important to note that to properly support remote users, the firewall
will not be automatically restarted during upgrades. After an upgrade, either
reboot or perform:
# /etc/init.d/ufw restart
Please note that the above command will briefly open the firewall before
reloading the rules.
Preseeding
----------
ufw has support for preseeding. To enable a default deny firewall, add to your
preseed file:
ufw ufw/enable boolean true
And to allow a service, use:
ufw ufw/allow_known_ports multiselect SSH, WWW
Currently, ufw knows about the following services:
Cups # tcp and udp port 631
DNS # tcp and udp port 53
Imap (Secure) # tcp port 993
Pop3 (Secure) # tcp port 995
SSH # tcp port 22
Samba # udp ports 137, 138 and tcp ports 139, 445
Smtp # tcp port 25
WWW # tcp port 80
WWW (Secure) # tcp port 443
You may also add additional ports by supplying a space separated list of
services from /etc/services, a port number or a port/protocol combination. Eg:
ufw ufw/allow_custom_ports string auth 8080 1194/udp
Please keep in mind that these ports and services are not associated with ufw
application profiles.
Kontol Shell Bypass