[Serusers] funny udp bind error

Jiri Kuthan jiri at iptel.org
Wed Nov 5 10:23:31 CET 2003


This one could be caused by pix, but as long as there is no evidence
it stays a guess and pix can't be claimed guilty. (Why I think it could
be this way is that pix is able to rewrite SIP packets and maybe there
is an error in udp checksum recomputation.)

-jiri

At 04:05 AM 11/5/2003, Stephen Miles wrote:
>I am also seeing this in my syslog:
>
>kernel: UDP: bad checksum. From 202.180.76.97:36589 to 202.180.83.14:5060 ulen 477
>
>Don't know if this is related but the 76.97 address is the Cisco Pix and 83.14 is the server running SER.
>
>Cheers,
>
>Stephen
>
>Stephen Miles wrote:
>>Hi all,
>>I am having a little problem involving a Cisco Pix firewall using nat.
>>The error I am getting is: ERROR: udp_rcv_loop:recvfrom:[11] Resource temporarily unavailable
>>I can't seem to find any info about what this error means and the udp_server.c doesn't tell me much. Is it related to the port the Pix is trying to use when it re-writes the out bound request?
>>any idea?
>>Using x-lite latest build on an XP laptop behind a Cisco Pix talking to SER latest CVS build (everything compiled fine)
>>
>>Thanks in advance,
>>Stephen
>>
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--
Jiri Kuthan            http://iptel.org/~jiri/ 




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