DNS reverse look up zones.

[Kyle]

Not too sure about this so thought i would ask. I tend to go to Primary schools mostly and not many secondary schools. I was a a primary yesterday and wanted to chech the DNS on one of the DC's. I noticed there were not Reverse Look Up Zones configured. The school has two DC's and around 120 clients.

Should this be configured?

What is the general rule of thumb on this?

If the school had say 500 clients would it be configured then?


Not to up on DNS i' afraid.

[Geoff]

AD does not require a reverse lookup zone to function. However its very easy to configure so there's no reason not to. Plus you may need it if you have any software that has to resolve ip -> machine names. For example, most of our linux boxes need to be able to do this for either policy decisions or just logging purposes.

Also make sure you set a reasonable scavenge time. Duplicate rDNS entries are annoying.