[CentOS] named is up but does not respond to queries

[Les Mikesell]

On Wed, 2005-08-24 at 10:34, Arun K. Khan wrote:
> CentOS 4.1/bind-9.2.4-2.  
> 
> I have named serving as a cache DNS server plus SOA for a local intranet
> zone.  
> 
> The problem I am encountering - over a period of time it stops
> responding to queries.  

>         (from 192.168.1.150)
>         $ host www.yahoo.com 192.168.1.21 
>         ;; connection timed out; no servers could be reached
>         
>         # nmapfe of 192.168.1.21  (from 192.168.1.150)
>         (The 1208 ports scanned but not shown below are in state:
>         closed)
>         PORT      STATE SERVICE
>         22/tcp    open  ssh
>         25/tcp    open  smtp
>         53/tcp    open  domain
>         
>         (ssh'd into named server using IP# 192.168.1.21)
>         # service named status  
>         rndc: recv failed: operation canceled

It looks like it can't reach the root servers.  It has a private
address  - could you have a problem with your NAT gateway to the
internet?   How about your local firewalling on 53/udp to let
the responses back?

-- 
  Les Mikesell
    lesmikesell at gmail.com