huh

Sean Donelan sean at donelan.com
Tue Jan 15 22:23:52 UTC 2002


On Tue, 15 Jan 2002, Sean Donelan wrote:
> On Tue, 15 Jan 2002, Tim Devries wrote:
> > Ok, well this is good to know.  Although it still doesn't explain why my
> > firewall is reporting DNS UDP/TCP probes from windowupdate.com on a regular
> > basis.
>
> A couple of possibilities
>    - DNS cache poisoning sending spoofed answers to your DNS server (are
>        you running a current version of BIND or an alternative?)
>    - DDOS attack on windowsupdate.com using spoofed source packets (DNS
>        and HTTP packets can tunnel through most firewall configurations)

Here are examples of the bogus queries I've been seeing.  Since this is
a non-windows machine, it has no reason to query windowsupdate.com for
any purpose.


Jan 14 22:08:47 clifden named[14504]: [ID 295310 daemon.notice] denied
query from [207.68.131.17].1029 for "180.53.34.199.in-addr.arpa" PTR/IN
Jan 14 22:08:47 clifden last message repeated 2 times
Jan 14 23:12:12 clifden named[14504]: [ID 295310 daemon.notice] denied
query from [207.68.131.17].1029 for "180.53.34.199.in-addr.arpa" PTR/IN
Jan 14 23:14:05 clifden last message repeated 5 times
Jan 15 00:24:56 clifden named[14504]: [ID 295310 daemon.notice] denied
query from [207.68.131.17].1029 for "180.53.34.199.in-addr.arpa" PTR/IN
Jan 15 00:24:56 clifden last message repeated 2 times
Jan 15 01:32:20 clifden named[14504]: [ID 295310 daemon.notice] denied
query from [207.68.131.17].1029 for "180.53.34.199.in-addr.arpa" PTR/IN
Jan 15 01:36:13 clifden last message repeated 8 times
Jan 15 01:38:19 clifden named[14504]: [ID 295310 daemon.notice] denied
query from [207.68.131.17].1029 for "180.53.34.199.in-addr.arpa" PTR/IN
Jan 15 01:38:19 clifden last message repeated 2 times







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