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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 . . . → Read More: DNS Terms you need to know 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 . . . → Read More: How to close Open DNS  2 comments  Tips n Tricks  close, cpanel, disable, DNS, email alert, how to, install, loader, open, php, root, telnet |
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