Re: Security Log Message
- From: "Jim Harrison" <jim@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Sat, 16 Mar 2002 11:14:05 -0800
This is what you get when you try to reverse-resolve a private IP range,
like 10/8, 172.16/12, 169.254/16 or 192.168/16.
The Internet Root servers refer you to the "blackhole" dns servers. THese
address ranges are non-routable on the Internet, so they're useless as
destination IPs.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/authors/harrison/
Read the books!
----- Original Message -----
From: "R. Nath" <nathra@xxxxxxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Friday, March 15, 2002 4:50 PM
Subject: [isalist] Security Log Message
http://www.ISAserver.org
I am getting a security rejection with a service name of
"DNS/blackhole-1.iana.org". Can someone tell me what this means?
Thanks.
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