SMTP and SMTP/s Maximum new connections per host per second
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pfsense x64 2.2.2
Hi,
I'm trying to figure out what a good setting is for this on a firewall rule - limiting the number of SMTP and SMTP/s connections per second. I've read a bit and it seems that there isn't a clear answer on this.
Firewall Rule > Advanced Options > Maximum new connections per host / per second: ?
What is a decent rate for honest senders? :-)
I've got these modules installed and configured already:
snort with a bunch of rules
postfix forwarder
mailscanner…perhaps one of those already does this, not sure. The more protection I can put in front the better!
Thanks!
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If you already have Snort… check this and see how it flies...
http://doc.emergingthreats.net/bin/view/Main/WhatEveryIDSUserShouldDo#Multiple_Inbound_SMTP