3Com OfficeConnect 3CRWE53172 User Manual

Also see for OfficeConnect 3CRWE53172: Datasheet Installation guide

Contents

66 CHAPTER 5: GATEWAY C ONFIGURATIONtrigger port and incoming port(s), where traffic on the trigger port tellsthe firewall to open the incoming ports.Each defined Special Application only supports a single computer user,and up to 10 Special Applications can be defined. Any incoming portsopened by a Special Application trigger will be closed after five minutesof inactivity.To configure special applications:1 Click New.2 Select the applications from the pull-down list. (Figure 49)Figure 49 Special Application Settings ScreenOr select Other to specify a suitable name for the special application andthen enter a value in the Trigger Port and Incoming Ports text boxes(Figure 49). These values correspond to the outbound port numbersissued by the application.The port numbers are specified using a comma-separated list, withhyphens 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.The Gateway will automatically allow FTP and NetMeeting sessions. Youdo not need to configure these as Special Applications.