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Appendix A: State Tables for VPN-1/FireWall-1 4.0 RPC tables

Advanced Technical Reference Guide 4.1 • June 2000 170

Example

attributes: refresh, expires 800

<c7cb47c6, 00000011, 00000753, 000186c3; 798/800>

The rpc_serv table uses the following format:

The source IP address is that of the responding server. The answer port is the answer for the port request in the

pmap_req table. Refer to the pmap_req table below for information on the program number field.

pmap_req table

The pmap_req table holds the clients’ requests to the port mapper for a certain server port. This table is used to

implement Stateful Inspection for RPC and holds data about the RPC and the “port mapper”.

Example

attributes: expires 10

<c0a8cd0c, c7cb47c6, 00000011, 00000753, 5a93f6d6; 000186c3; 5/10>

The pmap_req table uses the following format:

<source IP address, destination IP address, port mapper protocol, source port, transaction ID; RPC program

number; time left/total time>

The port mapper protocol is either 11 (UDP) or 6 (TCP). The transaction ID is the unique number assigned to

any port mapping request. The program number is the unique number of the program whose port was

requested. Some typical program numbers are:

Program Number Description

100001 Rstat

100004 Ypserv

100007 Ypbind

100300 NIS+

Note: Open any RPC service in FireWall-1 to see its program number

pmap_not_responding table

The pmap_not_responding table contains the list of IP addresses of computers on which the port mapper failed

to reply.

Example

attributes: expires 120

<c7cb47e3; 116/120>

The pmap_not_responding table uses the following format:

1 2 ... 170 171 172 173 174 175 176 177 178 179 180 ... 196 197

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Bay Networks BayRS Guide de dépannage Page 175