hi everybody
I set up my own DNS and it's working very well but I did just the configuration for "mydomain.zone", now I want to do the "IP@.in-addr.arpa...." I have an idea of the files that I have to modify/create.

I tested my DNS with:

dig any @IP mydomain.zone

I wanna know what are the advantages of creating the inverse resolution???

and how do I test if it's working or not???



thanx

Its called "reverse" rather than "inverse" in DNS terminology.

Dig will let you do reverse lookups by specifying the -x flag and the IP address.

The purpose of reverse lookups is to show you the name when you know the IP. Sometimes you need this for some applications. A couple of examples:
1) Backup software like NetBackup does everything by host "name" but initial connection is done by IP so it needs to look it up. If it can't find the name it fails.
2) Spam prevention - many people will try to resolve you IP to a name AND your name to an IP and may block you if they can't do either or both.

Of course sometimes you DO want to avoid letting people know. For example if you had a server named "mybackdoor" and put it on a public network so you could reach it at need you'd likely not want to advertise it so you don't create a reverse lookup for it. (Note this doesn't prevent anyone from finding it on a subnet - just prevents giving them hints as to what it is.)

For systems like the latter I typically would add them to the arpa reverse zone file but would prepend them with a semi-colon so they're "commented" out.

thank you so much,I'll let you know when I test it.

hi, so I set up everything and I tested with dig -x IP and it's working great,thank you so much, I really appreciated your help

Hi, the webmin package has a lot of tools, nicely grouped and some network server and client config interfaces.

Check it out, Webmin.

Cheers, Glenn