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Exposed Email Server


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solidghost
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« on: June 27, 2007, 04:46:21 am »

I have an email server which is exposed (that is without any firewall) to the Internet. However, I have patched the Windows to the latest and didn't install any other software other than the email server software.

Is it safe?
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Defcon 5
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« Reply #1 on: June 27, 2007, 10:14:36 am »

Yeah, you could post your IP and let someone try it Grin (only joking dont post it).

Skiddies are good at breaking into windows systems Smiley, my choice of a mail server would have been red hat, and chuck it behind a firewall.
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Darksat
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« Reply #2 on: June 28, 2007, 12:47:35 am »

I have an email server which is exposed (that is without any firewall) to the Internet. However, I have patched the Windows to the latest and didn't install any other software other than the email server software.

Is it safe?

I would say, probably not.
You need a firewall of some sort, although a router based firewall would just about do, and even the inbuilt windows firewall is better than nothing (although I still recommend something else instead).
and you REALLY need AV software, especially one with the capability to scan emails received by the mail server.
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Defcon 5
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« Reply #3 on: June 28, 2007, 02:56:54 am »

http://www.clamav.net it a really good anti virus.
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solidghost
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« Reply #4 on: June 29, 2007, 04:26:35 pm »

Thanks.
I think I will just use a consumer NAT router and forward all the needed ports.
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Darksat
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« Reply #5 on: June 30, 2007, 06:46:47 am »

Probably good to get a spam/virus checker for incomming mail.
The nat firewall is a good step up though.
but the more security the better.
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solidghost
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« Reply #6 on: June 30, 2007, 10:33:57 am »

Yes.
I was thinking of setting up an anti-spam and anti-virus relay gateway in front of my mail server. This will certainly help right?
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Darksat
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« Reply #7 on: June 30, 2007, 01:44:21 pm »

Yeah, its kind of an essential for a mail server.
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solidghost
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« Reply #8 on: June 30, 2007, 07:08:44 pm »

I don't want to overload my main mail server, pushing all the spam filtering and virus filtering work to another server would be a more practical solution..
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