Re: g.root-servers.net returns NXDOMAIN for com.

[Josh Richards <jrichard () cubicle net>]

* Greg A. Woods <woods () weird com> [20000804 17:35]:
[..] 
> Assuming this isn't a spoofed reply, it may give some indication as to
> the source of the problems it had though:
>
>       $ host -t txt -c ch version.bind g.root-servers.net
>       VERSION.BIND            TXT     "8.1.2-P2"
[..]

host -t txt -c ch version.bind <server> results:

a.root-servers.net      VERSION.BIND            TXT     "8.1.2"
b.root-servers.net      VERSION.BIND            TXT     "8.2.2-P5"
c.root-servers.net      VERSION.BIND            TXT     "8.2.2-P5"
d.root-servers.net      VERSION.BIND            TXT     "8.2.2-P5"
e.root-servers.net      VERSION.BIND            TXT     "8.2.3-T5B"
f.root-servers.net      (not responding)
g.root-servers.net      VERSION.BIND            TXT     "8.1.2-P2"

I understand the usefulness of version (and *cough* platform *cough*) 
diversity, but presuming these are correct, isn't the 'a' root vulnerable to 
several exploits, and 'g' likely as well? Although 8.1.2-P2 may be a custom 
(fixed?) build since I've never seen/heard of a patchlevel 2 for 8.1.2, only 
8.2.2 (but I may just have missed it).

-jr

----
Josh Richards [JTR38/JR539-ARIN]
<jrichard () cubicle net/fix.net/freedom.gen.ca.us/geekresearch.com>
Geek Research LLC
IP Network Engineering and Consulting

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