3Com 3CRWE554G72T - OfficeConnect Wireless 11g Cable/DSL..., User Manual

Page: 75 / 146

Firewall 75
Figure 54 Custom Setup Screen
Click Add to return to the Virtual Server Settings screen.
4 Click Apply to save the settings.
The port numbers are specified using a comma-separated list, with
hyphens to denote port number ranges. So for example, entering
2, 3,
5-7 would cause ports 2, 3, 5, 6, and 7 to be activated.
Special Applications
Figure 55 Special Applications Screen
Select Special Apps tab to display Authorized Application setup screen.
( Figure 55 )
Some software applications require special or multiple connections to the
Internet and these would normally be blocked by the firewall. For
example Internet Telephony or Video conferences require multiple
connections.
So that these special applications can work properly and are not blocked,
the firewall needs to be told about them. In each instance there will be a