ZyXEL Communications Intelligent Broadband Sharing Gateway P-324 - Manual (Page 166)

13-8 Filter Configuration
Table 13-3 TCP/IP Filter Rule Menu Fields
FIELD DESCRIPTION EXAMPLE
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. No
Destination
IP Address Enter the destination IP Address of the packet you wish to
filter. This field reads don’t-care if it is 0.0.0.0. IP address
IP Mask Enter the IP mask that will be used to mask the bits of the
IP address given in the Destination IP Address field.
IP mask
Port # Enter the destination port of the packets that you wish to
filter. The range of this field is 0 to 65535. This field reads
don’t-care if it is 0.
0-65535
Port # Comp Select the comparison to apply to the destination port in
the packet against the value given in Destination Port #
field. Options are: None, Less, Greater, Equal or Not
Equal.
Equal
Source
IP Address Enter the source IP Address of the packet you wish to
filter. This field reads don’t-care if it is 0.0.0.0. IP Address
IP Mask Enter the IP mask that will be used to mask the bits of the
IP address given in the Source IP Address field.
IP Mask
Port # Enter the source port of the packets that you wish to filter.
The range of this field is 0 to 65535. This field reads
don’t-care if it is 0.
0-65535
Port # Comp Select the comparison to apply to the source port in the
packet against the value given in Source Port # field.
Options are: None, Less, Greater, Equal or Not Equal.
None
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