Probelms with the Nameserver behind a firewall

Greg Chavez greg at
Wed Mar 14 17:44:28 UTC 2001


o Allow TCP 53
o Make sure you're not running hide NAT on the box, that would just be
  darn silly
o If you're running static NAT, make sure it's working properly
o sniff your internal and external interfaces, and look for TCP or UDP
  port 53 packets - that is, see where and if the drops are occurring and
  go from there 

--Greg Chavez

On Wed, 14 Mar 2001, Mukund Ravipaty wrote:

>   Hi ,
>   I have just put my Primary Nameserver behind a firewall. I have
> allowed UDP out on port 53 Incoming/Outgoing on the firewall for the
> box . Does anyone know of any problems, or has ever encountered any
> problems.
>  Regards
>  Mukund

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