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The following table describes how to configure your TCP/IP filter rule.
Field
Active
IP Protocol
IP Source Route
Destination: IP
Addr
Destination: IP
Mask
Destination: Port #
Destination: Port #
Comp
Source: IP Addr
Source: IP Mask
Source: Port #
Source: Port #
Comp
TCP Estab
More
Filter Configuration
Table 8-5 TCP/IP Filter Rule Menu Fields
Description
This field activates/deactivates the filter rule.
Protocol refers to the upper layer protocol, e.g., TCP is 6,
UDP is 17 and ICMP is 1. This value must be between 0
and 255
If Yes, the rule applies to packet with IP source route
option; else the packet must not have source route option.
The majority of IP packets do not have source route.
Enter the destination IP Address of the packet you wish to
filter. This field is a don't-care if it is 0.0.0.0.
Enter the IP subnet mask to apply to the Destination: IP
Addr.
Enter the destination port of the packets that you wish to
filter. The range of this field is 0 to 65535. This field is a
don't-care if it is 0.
Select the comparison to apply to the destination port in
the packet against the value given in Destination: Port #.
Enter the source IP Address of the packet you wish to
filter. This field is a don't-care if it is 0.0.0.0.
Enter the IP subnet mask to apply to the Source: IP Addr.
Enter the source port of the packets that you wish to filter.
The range of this field is 0 to 65535. This field is a don't-
care if it is 0.
Select the comparison to apply to the source port in the
packet against the value given in Source: Port #.
This field is applicable only when IP Protocol field is 6,
TCP. If yes, the rule matches only established TCP
connections; else the rule matches all TCP packets.
If yes, a matching packet is passed to the next filter rule
before an action is taken; else the packet is disposed of
Prestige 100 and 100IH ISDN Router and Router/Hub
Option
Yes/No
0-255
Yes/No
IP address
Subnet mask
0-65535
None/Less/Greater/
Equal/Not Equal]
IP Address
IP Mask
0-65535
Yes/No
Yes/No
Yes / N/A
8-9
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