Am Sa, den 11.09.2004 schrieb Kostas Sfakiotakis um 0:38: Hi Kostas :) > Sorry for intruding , No need for that. > > nslookup -q=txt -class=CHAOS version.bind. 0 > > What does the above line mean ? It queries the version of the named running, where 0 means localhost. So for querying another DNS you have to exchange the 0 with the target IP/name. Other example with 1 German NIC server dns.denic.de: $ nslookup -q=txt -class=CHAOS version.bind. 81.91.161.5 Server: 81.91.161.5 Address: 81.91.161.5#53 VERSION.BIND text = "DENIC-2.4.01.s39-OPS.js" > Well , the only understandable thing i got from > nslookup , was that it's use was depreceated . > Othen than that i tried giving the above command > but the result was a lot different than a > bind version . This type of query is not necessarily reliable. Just see as an counter example: $ nslookup -q=txt -class=CHAOS version.bind. ns1.redhat.com Server: ns1.redhat.com Address: 66.187.233.210#53 version.bind text = "eleventy-billion and threeve" See i.e. http://www.brandonhutchinson.com/Determining_hiding_BIND_version_number.html on how to "camouflage" this information bind gives by default. I think it answers your following question too. > Are you asking the DNS Server to print it's Version number , > which is presumably stored in some sort of RR ? No RR. See the bind documentation on http://www.isc.org/index.pl?/sw/bind/docs/config/options.php --> "version The version the server should report via the ndc command or via a query of name version.bind in class chaos. The default is the real version number of the server, but some server operators prefer the string "surely you must be joking"." > [root@Magellan root]# dig @10.0.0.1 version.bind CHAOS txt [...] > ;; ANSWER SECTION: > VERSION.BIND. 0 CH TXT "Not available" The admin of the DNS you queried has changed the version information. > Alexander , well i have changed the actual IP Address to a fake one , > but other than that the output is original On my FC1 system with bind running a dig @127.0.0.1 prints out: ;; ANSWER SECTION: version.bind. 0 CH TXT "9.2.2-P3" > Kostas See to bind FAQ on http://www.nominum.com/getOpenSourceResource.php?id=6 (linked from http://www.isc.org/index.pl?/sw/bind/) Alexander -- Alexander Dalloz | Enger, Germany | GPG key 1024D/ED695653 1999-07-13 Fedora GNU/Linux Core 2 (Tettnang) kernel 2.6.8-1.521smp Serendipity 00:55:18 up 11 days, 22:12, load average: 1.16, 0.94, 0.83
