Prestige 334 User’s Guide

Figure 142 Example Filter: Menu 21.1.3.1

Menu 21.1.3.1 - TCP/IP Filter Rule

Filter #: 3,1

TCP/IP Filter Rule

Filter Type=

Active= Yes

6

IP Source Route= No

IP Protocol=

Destination: IP Addr= 0.0.0.0

 

IP Mask= 0.0.0.0

 

Port #= 23

 

Port # Comp= Equal

Source: IP Addr= 0.0.0.0

 

IP Mask= 0.0.0.0

 

Port #= 0

TCP Estab= No

Port # Comp= None

 

Log= None

More= No

 

Action Matched= Drop

 

Action Not Matched= Forward

Press ENTER to Confirm or ESC to Cancel:

Press Space Bar to Toggle.

Select Yes from the Active field to activate this rule.

6 is the TCP IP Protocol.

The Port # for the telnet service (TCP protocol) is 23. See RFC 1060 for port numbers of well-known services.

Select Equal from the Port # Comp field as you are looking for packets going to port 23 only.

Select Drop in the Action Matched field so that the packet will be dropped if its destination is the telnet port.

Select Forward from the Action Not Matched field so that the packet will be forwarded if its destination is not the telnet port.

Press [SPACE BAR] and then [ENTER] to choose this filter rule type. The first filter rule type determines all subsequent filter types within a set.

When you press [ENTER] to confirm, you will see the following screen. Note that there is only one filter rule in this set.

Chapter 27 Filter Configuration

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