3Com 3CRWE554G72 manual Custom Setup Screen

Firewall 65

Or select Custom to specify a suitable name for the service and then enter the port numbers required for that service. (Figure 47)

Figure 47 Custom Setup Screen

4Click Add 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, 5-7would cause ports 2, 3, 5, 6, and 7 to be activated.

Special Applications Figure 48 Special Applications Screen

Select Special Applications tab to display Authorized Application setup screen. (Figure 48)

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