User manual

Firewall
148
Descriptive Name An arbitrary name for this rule
Enable Uncheck to temporarily disable this rule
Private Address The private address to change
Public Address The public address, typically a WAN interface alias
Public Interface Select the interface on which the public address
resides, this is typically Internet
Note
When adding a rule, you may either use Predefined addresses that have been added
under Definitions, or click New to manually enter an address.
Masquerading
Masquerading is a form of source network address translation (NAT). It translates many
addresses (such as private LAN IP addresses) into a single address (such as the
external Internet IP address).
Masquerading has the following advantages:
• All machines on the local network can access the Internet using a single ISP
account.
• Only one public IP address is used and is shared by all machines on the local
network. Each machine has its own private IP address.
The firewall remains active when masquerading is disabled.