REVERSE DNS Practices.

Tom Wright twright at
Mon Mar 23 00:01:22 UTC 2009

On 21/03/2009, at 11:30 PM, bmanning at wrote:

> if you really don't care about the actual node, then you should map  
> the
> numbers to topologically significant names - after all, the reverse  
> map
> follows topology, not some goofball - layer 9 - ego trip thing.

Agreed - and its certainly manageable if you automate the process.

Generating reverse lookups from your config backups is a pretty
reliable way of doing this for infrastructure/dynamic allocations.

Your NOC staff will love it because they won't have to worry
when they shuffle around local pools, or turn up new interfaces.

> or - the more modern approach is to let the node (w/ proper  
> authorization)
> do a secure dynamic update of the revserse map - so the forward and  
> reverse
> delegations match. ... a -VERY- useful technique.

Are there any network operators actually doing this on a large scale?

-- Tom

Kind Regards,

Tom Wright
Internode Network Operations
P: +61 8 8228 2999

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