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[IDD #AGE-898572]: What's the best way to find who's requesting data?

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  • Subject: [IDD #AGE-898572]: What's the best way to find who's requesting data?
  • Date: Thu, 25 Oct 2012 07:39:05 -0600
Hi Gerry,

re:
> Hrmph. Of COURSE I could do a "netstat -a|grep ESTAB" but that would
> have required me to think a little harder. Thanks.

:-)

re:
> What I'm seeing right now in the ldm1.tamu.edu log includes the
> following (and a lot more, similar):
> Oct 24 19:00:18 ldm1 ldmingest01.nwc.ou.edu[1933] NOTE:
> [ldm6_server.c:335] New upstream LDM process is disallowed
> Oct 24 19:00:18 ldm1 ldmingest01.nwc.ou.edu[1934] NOTE: [uldb.c:1225]
> Request from 129.15.109.251 overlaps existing service:
> request="20121024230018.726 TS_ENDT {{UNIDATA,  ".*"}}",
> service="20121024215837.190 TS_ENDT {{WMO,  ".*"}}"
 ...

This is LDM 6.11.1's attempt to block requests that are redundant
and thus prevent one kind of denial of service attack.  The
problem being highlighted is:

UNIDATA == WMO|UNIWISC

REQUESTing both UNIDATA and WMO with the same pattern (".*" in
this case) is redundant and will result in a needless use of
bandwidth.  The person in charge of the LDM making the redundant
REQUESTs should be contacted and advised to turn off the WMO REQUEST
as it is already taken care of in the UNIDATA REQUEST.

Cheers,

Tom
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Ticket Details
===================
Ticket ID: AGE-898572
Department: Support IDD
Priority: Normal
Status: Closed