Any experiences with check_udp

[Scott Ripley]

I don't think check_udp is broken, but more that bind is expecting something
as query input. Try something like this (hostnames changed to protect the
innocent):

swt1# ./check_udp <dns_server> -p 53 -s "A? validhost.mydomain.com."
Connection accepted on port 53 - 0 second response time
swt1# 

Scott.



-----Original Message-----
From: Carroll, Jim P [Contractor] [mailto:jcarro10 at sprintspectrum.com]
Sent: Wednesday, September 11, 2002 10:08 AM
To: nagios-users at lists.sourceforge.net
Subject: RE: [Nagios-users] Any experiences with check_udp


That's weird.  I'm having the same problem.  Check this:

$ ../libexec/check_udp -H ml15 -p 53
No data was recieved from host!
No response from host on port 53

And now check this:

$ ../libexec/check_dns -H ml15
DNS ok - 0 seconds response time, Address(es) is/are 10.108.56.15

Wild speculation, but it looks like check_udp is aB0rken.

jc

> -----Original Message-----
> From: ZIEGENBEIN, Kurt [mailto:kurt.ziegenbein at saarstahl.de]
> Sent: Wednesday, September 11, 2002 1:38 AM
> To: nagios-users at lists.sourceforge.net
> Subject: AW: [Nagios-users] Any experiences with check_udp
> 
> 
> > it seems that Terminal server uses TCP/3389
> > 
> > http://support.microsoft.com/default.aspx?scid=KB;EN-US;q150543&
> 
> Thanks for the hint! But I'm still not able to use the 
> check_udp plugin.
> As you can see below, I have even trouble to check the UDP 
> port 53 (DNS).
> 
> Please check someone the command "check_udp <ip> -p 53" for a 
> DNS-Server.
> I'm not sure what's wrong with it.... Or how I have to use it...
> 
> > > Hi all!
> > > 
> > > I've some kind of trouble with the check_udp plugin. I 
> want to check
> > > a W2k-Terminalserver (1604/UDP), but it seems that the 
> way I use the
> > > plugin isn't correct.
> > > 
> > > I made the following tests with the "well-known-port" 53 
> > (DNS), so that
> > > I can be sure that there is nothing special with w2k.
> > > 
> > > The command (direct from shell) "check_udp <ip> -p 54" 
> > exits directly
> > > with "No response from host on port 54". Thats ok, because 
> > there is nothing
> > > listening.
> > > 
> > > The command "check_udp <ip> -p 53" waits for the timeout 
> > (10 sec) and then
> > > exits with "No data was recieved from host! No response 
> > from host on port
> > > 53"
> > > 
> > > Where is the problem?
> > > 
> > > Since the code for check_udp didn't change in the past half 
> > year, I don't
> > > expect bugs there...
> > > 
> > > Kurt
> 
> 
> -------------------------------------------------------
> In remembrance
> www.osdn.com/911/
> _______________________________________________
> Nagios-users mailing list
> Nagios-users at lists.sourceforge.net
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> 


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www.osdn.com/911/
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