caching-namserver
Ed Greshko
Ed.Greshko at greshko.com
Tue Aug 22 05:57:05 UTC 2006
Bob Goodwin wrote:
> Before and after for "host -v google.com"
>
> Received 252 bytes from 127.0.0.1#53 in 917 ms
> Received 252 bytes from 127.0.0.1#53 in 151 ms
Actually, the 100% sure way to know that your caching name server is
working is to run something like "tcpdump" or "ethereal" and capture
only packets for port 53.
When you do a "host" for a known non-cached host you'll see the query
going out. The second time you do the "host" you should not see a query
going out.
Ed
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