topic Re: use slaves as forwarders for the master dns in Operating System - Linux

use slaves as forwarders for the master dns

'chris' — Wed, 30 Aug 2006 13:05:35 GMT

hi

I have a public master DNS BIND 9 for some internet domains
and 3 DNS servers from my ISP:

201.X.X.10
201.X.X.9
201.X.X.5

are SLAVES.

should I configure my master dns to allow forwarders from my ISP with the:

forward first;

option, or better I should leave like this:

# forwarders { 201.X.X.10; 201.X.X.9; 201.X.X.5; };

# Enable the next entry to prefer usage of the name
# server declared in the forwarders section.

# forward first;
# forward only;

and don't configure any forwarders, because I'm the master ?

Re: use slaves as forwarders for the master dns

Steven E. Protter — Thu, 31 Aug 2006 05:22:49 GMT

Shalom,

Chris, your ISP likely is set up to permit forwarding from their network, which in essence includes your Internet Address. Its okay to try what you propose. If it does not work, you will know and can contact them.

I also recommend logging so you can see when forward requests fail in /var/log/messages

SEP

Re: use slaves as forwarders for the master dns

Vitaly Karasik_1 — Thu, 31 Aug 2006 06:37:01 GMT

If I understand you properly and you have master NS for chriszone.com and several slaves for this zone on your ISP NSs, you don't need to use forward statement at all.