[HCoop-Help] network devices blocking UDP in one direction

[Omry Yadan]

I did some testing to see if I can find anything:

I used wireshark to see what's up.

on the working machine, packets are sent and received from hcoop.

on the non working machine, wireshark reports bad checksum of outgoing 
packets which may or may not be related.

just to be sure my router is not playing tricks on me, I connected the 
cable modem directly to the machine with the problem, and had the same 
problem.


see attached wireshark dumps, I suspect that reported bad checksum may 
be related.


Adam Megacz wrote:

> Omry Yadan <omry at yadan.net> writes:
>   
>> connect(4, {sa_family=AF_INET, sin_port=htons(88), sin_addr=inet_addr("69.90.123.67")}, 16) = 0
>> send(4, "j\201\3650\201\362\241\3\2\1\5\242\3\2\1\n\243P0N0L\241"..., 248, 0) = 248
>> gettimeofday({1215240126, 987432}, NULL) = 0
>> gettimeofday({1215240126, 987486}, NULL) = 0
>> select(5, [4], [], [4], {0, 999946})    = 0 (Timeout)
>> gettimeofday({1215240127, 986438}, NULL) = 0
>> gettimeofday({1215240127, 986496}, NULL) = 0
>> select(5, [4], [], [4], {2, 936})       = 0 (Timeout)
>>     
>
> One of the root admins (not me) needs to use
> deleuze:/var/log/kerberos/krb5kdc.log to continue troubleshooting this
> with you.  Most likely: something in your network (a NAT, perhaps?) is
> blocking UDP packets on port 88 on their way back from deleuze.
>
> Good luck.
>
>   - a
>
> _______________________________________________
> HCoop-Help mailing list
> HCoop-Help at lists.hcoop.net
> https://lists.hcoop.net/listinfo/hcoop-help
>   

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