why to specify CNAME record??

[srnerkar]

Hello,
I want to set up DNS server with my Redhat 9 machine. So for what this CNAME record is used in DNS files. What problem is solved by that and How TO specify that record in the forward zone file then??????????

Please Help Me Here.....

Thank YOU.......

[serz]

Look for DNS HOWTO's on the internet..

[MarkMcG]

A CNAME record in DNS is an Alias name. I think the C stands for Canonical. The DNS server references ip addresses to hostnames and most of the individual records in the forward lookup zone will be host (A) records.

If for example you had a machine which was known under three different names you would have one host record and two CNAME records which point to the name of the host.

If you have a lot of CNAME records then even if the ip address of the original changes the CNAMEs still function as the point to names, not ip addresses.

Hope this helps

[srnerkar]

Thanks to all,
so sir suppoes i am having web server in my intranet( I dont want that server to be seen by any other person than intranet ) as "mm1.example.com" and i want that when i will give only ""mm1"" from anywhere from my intranet. then is it possible for to see web pages with this CNAME setting in DNS??

(it means that I want to access "mm1.example.com" by only "mm1")

Thanks