Special Applications - 3Com OfficeConnect 3CRWDR200A-75 User Manual

Special Applications

3 The commonly used port with the associated service will be entered in
the table automatically. You may change them manually.
4 Click Save/Apply to save the settings.And the confirmed entries will be
displayed.
5 Click Add to return to the Virtual Server configuration page to enter
more entries.
The is a total of 32 services can be defined in the Virtual Server.
Figure 40 Special Applications Screen
Select Special Apps tab to display NAT-Port Triggering Setup screen.
(Figure 40)
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 trigger port and incoming port(s), where traffic on the
trigger port tells the firewall to open the incoming ports.
Each defined Special Application only supports a single computer user,
and up to 32 Special Applications can be defined. Any incoming ports
Firewall 63