Reply to: Smart Business Lists
Re: [IMail Forum] dictionary attacks on Friday 4:17:55 PM
This solution seems terribly complex. We just installed Black Ice
Firewall for Servers and it detects many errors on SMTP and shuts
these connections off automatically. Nothing to it really. It
also stops all sorts of other server attacks automatically saving
processor too. For a couple a hundred bucks, it's one of the best
investments we've made.
--
Roger Heath
[EMAIL PROTECTED]
www.rleeheath.com
----- Copy of Original Message(s): -----
S> Dave,
S> Friday, August 16, 2002 you wrote:
DM>> I like the analyses you've done. Along these lines, I don't know
DM>> if you can access the info if you are not on the IMGATE lists, but
DM>> Len and his pals have devoted the last few months of their lives
DM>> finding interesting and creative ways to slow the DOS using all
DM>> kinds of nasty little scripts in IMGATE. Definitely worth a look.
S> Yes, I've been following it. I admire the simplicity of stopping the
S> attacks. In fact I may put in an IMGATE for this reason alone.
S> These dictionary attacks are becoming increasingly sophisticated,
S> frequent, and stealing lots of resources.
S> It really is impressive in this last attack that someone had at least
S> 42 open relays on so many different networks to base their attacks.
S> Moreover, as I would intercept the IP's, block them, and then toggle
S> the server it surely appeared that the attack algorithm changed in
S> response to my counteroffensive.
S> Terry
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