The following notations and values are valid for firewall source and destination fields when you are adding or editing firewall rules:  

• A single IP address
  192.168.0.1
• A network in CIDR notation
  192.168.0.0/24
• A range of IPs
  192.168.0.1-192.168.0.50
• Any IP address
  Any
• Internal IP addresses
  Internal
• External IP addresses
  External

You may also select an object to automatically fill in its IP address.

The following notations and values are valid for firewall port fields:

•  A port (integer from 1-65535)
• A range of ports separated by a dash
• "Any" or -1 (both are equivalent)

Configuring Firewall Rules