09-16-2002 08:52 AM - edited 02-20-2020 10:15 PM
We have a firewall inbetween our remote support office and where the AS/400's are. I believe I have everything configured correctly. I have the dlsw peers up , but cannot get the dlsw circuits established.
On the f/wall I am seeing this message.
500004: Invalid transport field for protocol=17, from 10.192.107.251/0 to 172.31.1.50/2067
the 10.192 is on the inside of the f/wall land the 172.31 is on the outside. Can you shed any light???
tks
Ann Marie
09-16-2002 01:21 PM
What version of PIX are you running? Bug CSCdk77341 affected dlsw thru PIX until version 4.2(4).
Also look at :http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/113ed_cr/ibm_c/bcprt2/bcdlsw.htm#xtocid2434628
Hope it helps.
Steve
09-16-2002 04:14 PM
For my second point see bug CSCdt49040.
DESCRIPTION:
The PIX will not allow UDP packets through it with with a source port of
0 (zero).
EXAMPLE:
If a packet is sent through the PIX with a source port of 0, the PIX will
drop the packet and generate a syslog message similar to the following:
PIX-4-500004: Invalid transport field for protocol=17, from 10.34.2.15/0 to 192.168.1.6/514
The two cases we have seen on this are as follows:
1) DLSW CUR (Can you reach) packets use a source port of 0.
2) Some syslog clients use UDP source port 0 when sending messages to the syslog server.
WORKAROUND:
1) Enter the following command in the global config to disable the use
of UDP between the DLSW peers:
"dlsw udp-disable"
2) There is no workaround at this time. The draft RFC for syslog suggest
using a UDP source port of 514.
FIX:
This bug is fixed in PIX releases 5.3(2), 6.0(1) and higher.
It will also be in PIX 5.2(7) when it comes out.
09-17-2002 05:16 AM
F/wall is at version 5.3(1) so I will upgrade first , I am a little concerned with the work around since I have 150 sites connecting to the router where the AS/400 is .
tks
Ann Marie
09-23-2002 04:01 AM
Upgrading the firewall worked.
tks
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