Comments on: Setup Master-Slave DNS Server Using “Bind” Tools in RHEL/CentOS 6.5

By: Sushant

Sushant — Tue, 02 Jun 2020 17:59:47 +0000

Allow port 53 as TCP as well.

By: Sushant

Sushant — Tue, 02 Jun 2020 17:58:45 +0000

The slave DNS will not have the file if you even follow up all the article line by line, everything is fine except for one thing that is allowing port 53 as TCP in iptables / firewall. DNS uses both TCP as well as UDP as a port.

UDP is used for querying other name servers like root, TLD, and authoritative.
TCP is used for zone transfer between master and slave DNS.

In this article port 53 for UDP is allowed but we must allow port 53 as TCP as well in order for all the zone file to be seen in the /var/named/slaves folder and Slave DNS to receive all the zones and its data.

By: SHOUKET FAREED

SHOUKET FAREED — Sat, 24 Nov 2018 16:07:30 +0000

After I set up the slave server and ran the command ls -l /var/named/slaves or ls -l /var/named/slaves/local.fwd.zone or for the reverse zone total number of files are zero why my allow transfer didn't work from the master. I set up the master server correctly and getting the answer for forward and reverse lockups i define my domain as local.com.

By: Ashutosh Athawale

Ashutosh Athawale — Wed, 14 Nov 2018 12:44:17 +0000

Hi,

Great article and easy to understand.

I would like to request if we can have a link to download packages from, as i downloaded the packages but many of the libraries are missing due to which a person ends us resolving the dependencies and adding libraries.

It will be a great help if we get the required lib and packages.

By: Howrde

Howrde — Thu, 15 Mar 2018 23:18:12 +0000

All this is very nice but for a newbie trying to set up the DNS it’s tough to get through. I only have one server and your comment doesn’t show how to do this. So, thanks for trying…