ingress filtering

Fri May 29 14:44:16 UTC 1998

At 08:09 AM 5/29/98 -0400, you wrote:
>Actually it has nothing to do with WINS.  If all the ISP's would implement
>solid in-addr.arpa reverse mappings, this would go away.  Microsoft's DNS
>resolver has been extended, when DNS lookups fail, to do a reverse NETBIOS
>query against the target machine so it can use its name when displaying
>stuff via NBTSTAT, etc.  It was designed this way, before the Internet
>became popular.

The reverse on the name being queried works just fine:

[OverKill]:/# nslookup www.stefcam.com
Server:  NS1.ENTERZONE.NET
Address:  209.41.244.5

Name:    STEFCAM.COM
Address:  209.41.244.238
Aliases:  www.stefcam.com

[OverKill]:/# nslookup 209.41.244.238
Server:  NS1.ENTERZONE.NET
Address:  209.41.244.5

Name:    StefCAM.Com
Address:  209.41.244.238

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