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NetEngine IAD User Guide
Router Configuration 119
Configur-
ing the
Telnet
Server Port
When using NAT on the IAD, it is often desired to configure a host behind
NAT as a Telnet Server. In this case, Telnet requests are passed to the
host, and not handled by the IAD. By changing the Telnet port, both the
host and IAD may be accessed via Telnet.
To set the port for the Telnet Server, follow these steps:
1. On the Router Configuration menu, type T to select Configure Telnet
Server Port.
2. The IAD displays the current IP address and a prompt:
Enter Telnet Server Port: (23)
Type the new Telnet Server port (the default is 23).
3. The IAD saves the changes and displays the Router Configuration
menu.
4. Continue with other configuration tasks, or press Escape to return to
the Main menu.
5. Reset the IAD (page 15) when you finish router configuration.
Configur-
ing IP
Filtering
IP filtering allows for selective deletion of incoming and/or outgoing
packets. The IAD inspects each packet, and based on configured filters,
allows them to pass or deletes them. This feature may be used as a
firewall to only allow known good packets to pass though the IAD.
To configure IP Filtering, type F on the Router Configuration menu. The
IAD displays the IP Filtering Configuration menu:
Figure 5–6. IP Filtering Configuration Menu
NOTE
Because each packet must be tested against one or more
filters, IP filtering may significantly affect IAD performance.
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IP Filtering Configuration Menu
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Editing Unselected Port Input filters
P. Choose port for IP filtering
F. Globally enable/disable input or output filters
T. Toggle input or output type filters to view/edit
D. Display all filters of the chosen type
I. Insert new or buffered filter of chosen type
A. Append new or buffered filter to end of list
E. Edit a filter of the chosen type
C. Copy filter operations menu
X. Delete one filter of the chosen type
Z. Delete all filters of the chosen type
S. Show IP filtering statistics
Y. Clear IP filtering statistics
Status
Messages
for IP
Filtering
display
here