Prestige 791R G.SHDSL Router

Table 12-3 TCP/IP Filter Rule

FIELD

DESCRIPTION

EXAMPLE

 

 

 

IP Protocol

This is the upper layer protocol, for example, TCP is 6,

0 to 255

 

UDP is 17 and ICMP is 1. The value must be between 0

 

 

and 255. A value of O matches ANY protocol.

 

 

 

 

IP Source Route

IP Source Route is an optional header that dictates the

No

 

route an IP packet takes from its source to its destination.

(default)

 

If Yes, the rule applies to any packet with an IP source

 

 

route. The majority of IP packets do not have source

 

 

route.

 

Destination:

Type the destination IP address of the packet you want to

IP address

IP Addr

filter. This field is ignored if it is 0.0.0.0.

 

 

 

 

 

 

IP Mask

Type the IP mask to apply to the Destination: IP Addr

IP mask

 

field.

 

 

 

 

Port #

Type the destination port of the packets you want to filter.

0 to 65535

 

The field range is 0 to 65535. A 0 field is ignored.

 

Port # Comp

Select the comparison to apply to the destination port in

None

 

the packet against the value given in Destination: Port #.

 

 

Choices are None, Less, Greater, Equal or Not Equal.

 

Source:

Type the source IP Address of the packet you want to

IP address

IP Addr

filter. A 0.0.0.0 field is ignored.

 

 

 

 

 

 

IP Mask

Type the IP mask to apply to the Source: IP Addr field.

IP mask

 

 

 

Port #

Type the source port of the packets you want to filter. The

0 to 65535

 

range of this field is 0 to 65535. A 0 field is ignored.

 

Port # Comp

Select the comparison to apply to the source port in the

None

 

packet against the value given in Source: Port # field.

 

 

Choices are None, Less, Greater, Equal or Not Equal.

 

TCP Estab

This applies only when the IP Protocol field is 6, TCP. If

No

 

Yes, the rule matches packets that want to establish TCP

(default)

 

connection(s) (SYN=1 and ACK=0); else it is ignored.

 

More

If Yes, a matching packet is passed to the next filter rule

No

 

before an action is taken or else the packet is disposed of

(default)

 

according to the action fields.

 

 

If More is Yes, then Action Matched and Action Not

 

 

Matched will be N/A.

 

Filter Configuration

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