Hurricane 9200/S ADSL Ethernet Router User’s Guide
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Example 2. Blocking Telnet accesses to the Hurricane 9200/S:
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 to create the rule, and commit your
changes.
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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.
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When two computers communicate using the IP protocol, an IP
session is created for the duration of the communication. The
Hurricane 9200/S 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:
