DNS Issues

[Brad Knowles]

At 12:24 PM +0800 6/12/01, Allie Syadiqin wrote:

>  I am trying to setup 2 DNS servers on a single machine.

	Don't.  The idea of having two nameservers for a zone is that 
you're supposed to get some redundancy -- if one machine crashes, the 
other one is still working.

	Moreover, you should not only set up two separate machines, but 
you should at least put them on separate networks, so if the 
hub/switch/router that they are plugged into dies, the other one 
should continue to work and be accessible.

	Ideally, you should have a secondary that is on a totally 
unrelated network and not located on your same premises -- usually 
your ISP can help in this regard, but you should also check out the 
free secondary nameserver facilities offered by secondary.com/Nominum 
(the company that wrote BIND 9 under contract to the ISC).

-- 
Brad Knowles, <brad.knowles at skynet.be>

/*        efdtt.c  Author:  Charles M. Hannum <root at ihack.net>          */
/*       Represented as 1045 digit prime number by Phil Carmody         */
/*     Prime as DNS cname chain by Roy Arends and Walter Belgers        */
/*                                                                      */
/*     Usage is:  cat title-key scrambled.vob | efdtt >clear.vob        */
/*   where title-key = "153 2 8 105 225" or other similar 5-byte key    */

dig decss.friet.org|perl -ne'if(/^x/){s/[x.]//g;print pack(H124,$_)}'