Home page logo
/

nanog logo nanog mailing list archives

Re: how to protect name servers against cache corruption
From: Michael Dillon <michael () priori net>
Date: Tue, 22 Jul 1997 14:50:19 -0700

if you run these as authoritative-
only (recursion disabled) then they will never fetch any data from anywhere.
(the root name servers are configured this way, for example.)  the downside
is that you can't list such nameservers in your "resolv.conf" files or PC
equivilents (Control Panel\\Networking\\TCP IP Settings, or some such rot.)
this means you need more name servers if you separate recursive from non-
recursive.

Correct me if I'm wrong, but this implies that nameservers whose sole
purpose is to act as primary and secondary for customer domains can run
with recursion disabled. I.e. all those nameservers whose identity is
readily discernable from public databases such as the Internic, RIPE, etc.,
could run in this configuration as long as they are not also intended to do
lookups for local machines on your local network.


********************************************************
Michael Dillon                    voice: +1-415-482-2840
Senior Systems Architect            fax: +1-415-482-2844
PRIORI NETWORKS, INC.              http://www.priori.net

"The People You Know.  The People You Trust."
********************************************************




  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]