DNS ACL ?

[John Hally <JHally () epnet com>]

Hello All,

 

I need a sanity check regarding DNS ACLs.  For external facing DNS servers
you need to allow only udp/53 inbound, correct?  I know tcp/53 is used for
zone transfers and requests/replies greater than a certain size, but they
shouldn't typically happen for general dns queries correct?  

 

Thanks in advance!



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