[cs615asa] Can't connect to DNS server

[Tejas]

Some further info...

For testing I opened all TCP/UDP/ICMP ports for the instances I'm using. 
I can ping as I said and I was able to telnet into SHH port 22 on the 
DNS server from the host without issue. I can traceroute from the host 
to the DNS and it all looks good.

However any attempt on port 53 is refused. This leads me to believe it's 
something with the local DNS process since I have a single AWS rule for 
both port 22 and 53 so I don't believe it's a firewall issue.

However, running nslookup/dig on the DNS server itself works fine so 
issue appears to be handling queries outside of localhost - I've 
verified that named is listening on port 53 via netstat so must be a 
permissioning thing. I've played around with the named.conf but maybe I 
missed something that's blocking queries.

Anybody help??!


On 03/24/2012 12:45 PM, Tejas wrote:
> I setup a DNS server on RH6 AMI and seems to work fine when I query on 
> that machine. However, I can't get another AMI (RH6) also to 
> successfully query the DNS server I setup. I've verified that UDP 53 
> is open in the security group and I can ping the DNS server from the 
> other host but any lookups just say can't connect to any DNS servers.
>
> Is there a step I'm missing?
>
> -Tejas
>
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