CTWUG DNS What is DNS Contents From CTWUG Wiki

1/12/12
CTWUG DNS - CTWUG Wiki
CTWUG DNS
From CTWUG Wiki
Contents
1 What is DNS
2 CTWUG DNS Servers
3 How CTWUG DNS Works
4 Setup our own DNS
What is DNS
DNS (Domain Name S stem WIKIPedia (http://en.wikipedia.org/wiki/Domain_Name_S stem) ) is used
instead of IP's. Most of the time if there is onl a couple of IP's its easier to use IP's instead of DNS, but the
bigger the network, the more IP's ou have to remember, and then its easier to remember DNS names ie:
http://wind.ctwug. a.net or http://wiki.ctwug. a.net
Another benefit using DNS is that ou can have multiple virtual servers on the same IP. wind.ctwug. a.net and
wiki.ctwug. a.net both runs on macg ver.ctwug. a.net
CTWUG DNS Ser ers
The CTWUG DNS Server is: 172.18.1.1
This IP actuall runs on 4 computers at the moment.
1. macg ver.ctwug. a.net (Jupi2) (nOs)
2. srv.tf re.ctwug. a.net (Phebos) (TF re)
3. server.wildpikachu.ctwug. a.net (Mercur ) (WildPikachu)
4. data.edge.ctwug. a.net (Rage) (CuttingEdge)
cthulhu.scar.ctwug. a.net (ScarFreewill) must still get the 172.18.1.1 IP
This IP (172.18.1.1) gets used for NTP as well.
Ho CTWUG DNS Works
196.211.31.107 (jaja) is the Primar DNS server and has a static public IP. This is reqruied to run a DNS
Server.
There are 2 secondar servers helping dns.ctwug. a.net with internet side queries
wiki.ctwug. a.net/CTWUG_DNS
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CTWUG DNS - CTWUG Wiki
1. dns2.nettica.com
2. dns4.nettica.com
The CTWUG DNS Servers gets their DNS Zone information directl from dns.ctwug. a.net.
When someone adds new IP addresses on WIND (http://wind.ctwug. a.net) , dns.ctwug. a.net gets notified.
dns.ctwug. a.net then updates its own one file and notifies 3 servers using static ip addresses
1. macg ver.ctwug. a.net (OpenVPN Tunnel to dns.ctwug. a.net)
2. dns2.nettica.com
3. dns4.nettica.com
When these servers receive the notification, the will do an incremental transfer from dns.ctwug. a.net.
After macg ver.ctwug. a.net receives the one file, it will notif the CTWUG DNS Servers
Setup our own DNS
Refer to DNS Setup. It is required for each user to register his or her used IP's on their Wind node.
Retrieved from "http://wiki.ctwug. a.net/CTWUG_DNS"
This page was last modified on 18 September 2011, at 16:25.
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