During my beginning years of System Administration, I was pretty much confused by the terms ‘primary nameserver’, ‘secondary nameserver’, ‘master/slave nameserver’ etc. Different websites have different views on these terms. I am sure many system admins (even experienced ones) have got their ideas wrong about these terms. My confusion ended the day I stumbled upon [...]
Posts Tagged ‘DNS’
How to close Open DNS
May 23rd, 2009 
admin This tutorial describes how to close an Open DNS server. An Open DNS server allows anyone to use that server as a DNS lookup server. This is a potential threat and such access must either be blocked, or restricted to a few trusted IPs. This is how it is done. 1. Make a list of [...]
Posted in Tips n Tricks 
Tags: close, cpanel, disable, DNS, email alert, how to, install, loader, open, php, root, telnet 
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