TRENDnet TDM-E400 User's Guide - Page 148

TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User's Manual Example 2. Blocking Telnet accesses to the Ethernet Modem Router : 1. Add a new rule for packets incoming on the ppp-0 interface. 2. Specify that the packet must contain the TCP protocol, and must be destined for port 23, the well-known port number used for the Telnet protocol. 3. Enable the rule by clicking the radio button at the top of the page. 4. Click changes. to create the rule, and commit your Viewing IP Filter Statistics For each rule, you can view statistics on how many packets were accepted or denied. Display the IP Filter Configuration page, and then click in the row corresponding to the rule. The IP Filter Rule - Statistics page displays: Figure 61. IP Filter Rule - Statistics Page You can click to reset the count to zero and to display newly accumulated data. Managing Current IP Filter Sessions When two computers communicate using the IP protocol, an IP session is created for the duration of the communication. The Ethernet Modem Router allows a fixed number of concurrent IP sessions. You can view information about each current IP session and delete sessions (for security reasons, for example). To view all current IP sessions, display the IP Filters Configuration page, and then click . The IP Filter Sessions displays: 148