Ufw

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Description

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Installation

$ sudo aptitude install ufw

Syntax

Usage

Usage: ufw COMMAND

Commands

enable                          enables the firewall
disable                         disables the firewall
default ARG                     set default policy
logging LEVEL                   set logging to LEVEL
allow ARGS                      add allow rule
deny ARGS                       add deny rule
reject ARGS                     add reject rule
limit ARGS                      add limit rule
delete RULE|NUM                 delete RULE
insert NUM RULE                 insert RULE at NUM
route RULE                      add route RULE
route delete RULE|NUM           delete route RULE
route insert NUM RULE           insert route RULE at NUM
reload                          reload firewall
reset                           reset firewall
status                          show firewall status
status numbered                 show firewall status as numbered list of RULES
status verbose                  show verbose firewall status
show ARG                        show firewall report
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 default application policy

Examples

Enable/Disable

$ sudo ufw enable
Firewall is active and enabled on system startup
$ sudo ufw disable
Firewall stopped and disabled on system startup

Status

$ sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip

Allow rule

Allow any traffic from 1.2.3.4:6690/tcp to any port on machine:

$ sudo ufw allow proto tcp from 1.2.3.4 port 6690 to any