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Enter a command. For example: debchange, pinout, ascii, smbmap.

ufw

Uncomplicated Firewall. Frontend for iptables aiming to make configuration of a firewall easier. More information: https://wiki.ubuntu.com/UncomplicatedFirewall.

• Enable ufw:
   
  ufw enable
   
• Disable ufw:
   
  ufw disable
   
• Show ufw rules, along with their numbers:
   
  ufw status numbered
   
• Allow incoming traffic on port 5432 on this host with a comment identifying the service:
   
  ufw allow {{5432}} comment "{{Service}}"
   
• Allow only TCP traffic from 192.168.0.4 to any address on this host, on port 22:
   
  ufw allow proto {{tcp}} from {{192.168.0.4}} to {{any}} port {{22}}
   
• Deny traffic on port 80 on this host:
   
  ufw deny {{80}}
   
• Deny all UDP traffic to ports in range 8412:8500:
   
  ufw deny proto {{udp}} from {{any}} to {{any}} port {{8412:8500}}
   
• Delete a particular rule. The rule number can be retrieved from the ufw status numbered command:
   
  ufw delete {{rule_number}}