Posts: 2
Joined: 30.Apr.2003
From: Canberra, Australia
Status: offline
This is my wish for ALL firewalls in general.
When a new e-mail message is recieved, the ISA server slows right-down....taking as long as possible to accept the e-mail message. Let the admin tweak a setting to say messages from myBuddies will be instant, and anyone else can still send me e-mail, however it will be painfully slow. In this way, spammers will actually have to wait the full round tcp/ip trip (which has been grossly extended) in order to send just a single e-mail message. If everyone did this, spam would only be attempted by the most dedicated spammers, and because the value is adjustable it means no changes to existing e-mail server or client software! Is this brilliant or what???
Posts: 2
Joined: 30.Apr.2003
From: Canberra, Australia
Status: offline
Can you see anything wrong with my idea or not? It seems to solve a very complex issue, in perhaps the easiest manner possible, by making mass-mailing a very long-and-slow process for spammers (ie. having to wait for an extended tcp/ip round-trip) As networks get faster, spam will only increase, unless spam is less atrractive. I think slowing down e-mail delivery for unknown e-mails senders is a perfect solution.
Current solutions reply on keeping up to date with lists DNS or otherwise, however my proposal does not involve keeping up at all (and let's face it, many people hate to apply constant patches or keep their spam lists up to date).
It requires no change to user's behaviour, it requires no spam-blocking software, no mail server upgrades and no e-mail client upgrades. In fact, this solution is hardware/software platform independant.
I get spam everyday, and unlike some people I don't want to "increase the size of my penis" :-p At least I'm trying to find a smart solution. It is my understanding that ISA server has a SDK and am wondering if I could induce this slow-down with a custom made app. I think I have the tools, but have not looked into it just yet.
Posts: 1561
Joined: 22.Jul.2002
From: Sydney, Australia
Status: offline
You could fairly easily impliment this with a packetshaper. In fact, I used to do exactly this albeit with another protocol. I had some users who insisted that they HAD to be able to receive streaming video/audio. (damend execs) Naturally though, this can be a real bandwidth hog. So, in my T1500 I setup audio/video to a capped 1Kb/sec partition - it worked but painfully slow. Even worse if more than 1 user tried to lsiten to the same site. These were back in the days our of superfast 64K ISDN connection. Nowadays with a (partial) E1 I don't even bother. Coupled with ISA using the internal WMS server as a proxy for live streams I don't care if I have 30 users all listening to the same live site as I only get 1 actual request/stream on the the outside!
BTW - anyone wanna buy a Packeteer T1500 with a 128Kb WAN interface? The cost of upgrading it was just too damned much so it's sitting in my rack consuming power but doing nothing!
What did you find for the best documentation for installing and configuring the WMS server? I have thought about setting that up a few times since we have so many people insisting the same thing here..<g>
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All Forums >> [ISA Server 2000 Misc.] >> ISA Server Wish List >> Block Spam using unique method of slowness 
Block Spam using unique method of slowness - 
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