ZyXEL P-128 User Guide - Page 137

The following table describes how to con your TCP/IP filter rule.

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Prestige 128IMH ISDN Modem/ Router/Hub 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 Table 10-6 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'tcare 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 according the action fields. 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 Filter Configuration 10-9

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Prestige
128IMH
ISDN Modem/ Router/Hub
Filter Configuration
10-9
The following table describes how to configure your TCP/IP filter rule.
Table 10-6 TCP/IP Filter Rule Menu Fields
Field
Description
Option
Active
This field activates/deactivates the filter rule.
Yes/No
IP Protocol
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
0-255
IP Source Route
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.
Yes/No
Destination: IP
Addr
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.
IP address
Destination: IP
Mask
Enter the IP subnet mask to apply to the Destination: IP
Addr.
Subnet mask
Destination: Port #
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.
0-65535
Destination: Port #
Comp
Select the comparison to apply to the destination port in
the packet against the value given in Destination: Port #.
None/Less/Greater/
Equal/Not Equal]
Source: IP Addr
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.
IP Address
Source: IP Mask
Enter the IP subnet mask to apply to the Source: IP Addr.
IP Mask
Source: Port #
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.
0-65535
Source: Port #
Comp
Select the comparison to apply to the source port in the
packet against the value given in Source: Port #.
Yes/No
TCP Estab
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.
Yes/No
More
If yes, a matching packet is passed to the next filter rule
before an action is taken; else the packet is disposed of
according the action fields.
Yes / N/A