RE: Black Listing Connections
- From: "Ball, Dan" <DBall@xxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Fri, 1 Apr 2005 12:26:51 -0500
As an example, we had to have the IP of our network changed last year
because we got on a black-list, simply because we had an IP that was in
a known cable-modem range. Once you're on one of those lists, you can't
get off of them, no matter what you do. We found out about it when
e-mails to one of our parent organization started bouncing...
________________________________
From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx]
Sent: Friday, April 01, 2005 12:18
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Black Listing Connections
http://www.ISAserver.org
I am not sure if Jim will flame away, but I will.
NEVER EVER EVER use a DNSBL to drop a connection.
BAD BAD BAD BAD
There is no such thing as a perfect DNSBL or RBL and as such they will
all have some false positives.
They should only be used in a weighting system.
John T
eServices For You
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