MENU SELECTION

DESCRIPTION

 

SRC MASK

The IP mask associated with the

 

Source Address in

hexadecimal

 

format. Left blank if ALL source

 

addresses are forwarded.

DEST ADDR

The destination address of IP packets

 

to be filtered. A network address,

 

individual IP address or ALL may be

 

specified.

 

DEST MASK

The IP mask associated with the

 

Destination Address in

hexadecimal

 

format. Left blank if ALL destination

 

addresses are specified.

 

PROT

Indicated the protocol this entry will

 

filter on e.g. ANY, TCP ONLY, UDP

 

ONLY, ICMP ONLY

 

S.PRT

The Source Port that this entry will

 

Filter on.

 

D.PRT

The Destination Port that this entry

 

will filter on.

 

RSLT

 

 

4.7.3 IPX SAP FILTER MENU (WAN or Ethernet)

SAP (Service Advertising Protocol) is used on Novell™ networks to inform workstations and file servers of what services the network can offer. The IPX SAP filter only operates when the IPX mode is set to route.

The Router maintains an internal table of known services. It receives SAP updates on either port and broadcasts the information to the other port. The filter allows selected information to be ignored on receipt and hence not stored in the SAP filter table. If a SAP update is not in the table it will be dropped and propagated to the other port.

A filter table is available for each port. Each table has 16 entries and is searched sequentially until a match is found. Each line can be set to pass or fail.

A SAP entry contains six elements, but the filter can only act on the following three; Service TYPE, Socket Address (FROM SKT, TO SKT) and SERVER NAME.

The following fields are ignored:

Network Address (32 bits)

Echo LANlink Router Option User Manual

Issue 1.0 04 December 1997 Page 38 of 59

Page 38
Image 38
Echo EN55022 manual IPX SAP Filter Menu WAN or Ethernet, Network Address 32 bits