Have I got a config problem ?

Barry Margolin barmar at genuity.net
Fri May 17 16:09:52 UTC 2002


In article <ac39ll$5plc$1 at isrv4.isc.org>,
Jack <jack at yankeeboysoftware.com> wrote:
>
>I have a habit of running 'tcpdump not host
>MY_CURRENT_HOST.mydomain.com' while I am working, since I like to know
>what sort of activity is happening against my server
>
>I have been seeing these messages recently which cause me to wonder if
>I have some problem in one (or more ) of my zones
>
>11:16:16.989585 eth0 < my.isp.domain >
>MY_CURRENT_HOST.mydomain.com.32769: 278 NXDomain* 0/1/0 (100)
>11:16:36.899585 eth0 < my.isp.domain >
>MY_CURRENT_HOST.mydomain.com.32769: 37749 ServFail 0/0/0 (40)
....
>So, my questions:
>
>Why would my ISP be looking for MY_CURRENT_HOST, how does it even know
>about it ?
>Is this an indication that I might have something wrong in one of my
>zones (local INTRANET zone possibly )

These are DNS *replies*.  MY_CURRENT_HOST must be sending DNS queries to
my.isp.  What's in its /etc/resolv.conf?

-- 
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.


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