3Com WL-542 - Manual (Page 60)

58 C HAPTER 5: C ONFIGURING THE R OUTER
To enable the firewall function:
1 Select the level of protection (High Level, Medium Level, Low Level, or
Disable) that you desire from the Firewall Enable/Disable drop-down
menu.
2 Click Apply.
Special Applications Special Applications let you choose specific ports to be open for specific
applications to work properly with the Network Address Translation (NAT)
feature of the Router.
Figure 47 Special Applications Screen
A list of popular applications has been included to choose from. Select
your application from the Popular Applications drop-down list. Then
select the row that you want to copy the settings to from the Copy To
drop down list, and click Copy To. The settings will be transferred to the
row you specified. Click Apply to save the setting for that application.
If your application is not listed, you will need to check with the
application vendor to determine which ports need to be configured. You
can manually input this port information into the Router.