Subj : RE: cheap and easy firewall
To : All
From : DAVE GOURD
Date : Thu Jan 31 2019 07:10 pm
Date: Sun, 01 Dec 2002 20:40:41 -0400
From: DAVE GOURD
To: KEN CURTIS
Subject: RE: cheap and easy firewall
Newsgroups: win.server.wish.list
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[email protected]>
References: <
[email protected]>
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Thanks Ken-
I saw that in a web search, wasn't sure from the descriptions and info
if I could simply block specific IP's. I might try it.
It still would be nice though if we had some 'cheap & easy' setting/list
within the SMTP configs.
--
Dave
-> 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
-> -> 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 s
-> -> 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 s
-> -> 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 h
-> -> the target.
-> ->
-> -> This would help stop the harvesting of email addresses via wcsmtp.
-> ->
-> ->
-> -> Right now I could use something like this, have been getting kille
-> -> 24/7 dictionary probes. I don't mind the oversized log files as mu
-> -> 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 l
-> -> seems to be a lot like hunting for bigfoot or the loc ness monster
-> -> as sometimes known good ip's are listed and blocked ONLY because t
-> -> 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
-> -> now and the machine resources overhead, and can't justify the expe
-> -> good hardware.
-> ->
-> ->
-> -> Thoughts or ideas?
-> ->
-> -> --
-> -> Dave
-> ->
-> ->
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