Filter
Top Products
Adding NAT Rules
79
The Filter rule: Configuring a BASIC rule
with additional criteria
Like the BASIC flavor, the Filter flavor translates public and
private IP addresses on a one-to-one basis. The Filter flavor
extends the capability of the BASIC rule. Refer to The BASIC
Rule on page 77 for a general description.
You can use the Filter rule if you want an address translation
to occur only when your LAN computers initiate access to
specific destinations. The destinations can be identified by
their IP addresses, the port type (which identifies it as a FTP
or Web server, for example), or both.
Figure 25. NAT Rule - Add Page (Filter Flavor)
Follow these instructions to add a Filter rule (see steps 1-4
under The NAPT Rule on page 70 for specific instructions
corresponding to steps 1 and 2 below):
1. Display the [NAT Rule – Add] Page, select [FILTER]
as the [Rule Flavor:], and enter a [Rule ID:].