Subj : RE: cheap and easy firewall
To : All
From : KEN CURTIS
Date : Thu Jan 31 2019 07:10 pm
Date: Sun, 01 Dec 2002 17:41:32 -0400
From: KEN CURTIS
To: DAVE GOURD
Subject: RE: cheap and easy firewall
Newsgroups: win.server.wish.list
Message-ID: <
[email protected]>
References: <
[email protected]>
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I use Sygate Personal Firewall (free for personal use) and it can block IP
and or ports.
Ken
On 12/1/02 5:40 PM, DAVE GOURD wrote to HECTOR SANTOS:
-> Is there any that a very simple "firewall" or local blocking list
-> could be added to protect from smtp probes?
->
-> For example, if a lot of probing comes from a certain IP, a sysop could
-> manually add it to a 'deny' list which would not allow delivery of
-> mail or attempts to deliver mail trying to verify valid email
-> accounts which are later found on the newest "29 million e-marketing
-> addresses for $149.99" CD's. (they don't pay me for letting them steal
-> the addresses)
->
-> The list could updated at the admins discretion if the issues are
-> resolved.
->
-> I know there are firewalls and routers to do this, but something simple
-> to stop or at least slow down this activity from known abusers via a
-> local list could be MOST helpful.
->
-> The rbl built-in capabilites work great, but as many of us know these
-> lists are not perfect and often either overkill or very short of hitting
-> the target.
->
-> This would help stop the harvesting of email addresses via wcsmtp.
->
->
-> Right now I could use something like this, have been getting killed with
-> 24/7 dictionary probes. I don't mind the oversized log files as much as
-> the fact that since 11/01/2002, 6 of our accounts were verified this
-> way and 2 of those started getting spam yesterday.
->
-> Reporting the network abuse to ISP's is both labor intense and many
-> times as effective as pounding sand up one's butt.
->
-> The spamrbl works great IF the ip's are listed, and getting them listed
-> seems to be a lot like hunting for bigfoot or the loc ness monster, and
-> as sometimes known good ip's are listed and blocked ONLY because the are
-> part of a netblock/dialup pool and not as a separate IP.
->
->
-> I don't really want to go through the hassle of learning firewalls right
-> now and the machine resources overhead, and can't justify the expense of
-> good hardware.
->
->
-> Thoughts or ideas?
->
-> --
-> Dave
->
->
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