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Koozali.org: home of the SME Server
Obsolete Releases
SME Server 9.x
Topic:
9.2: any way to block incoming SMTP after N unsuccesful login tries?
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9.2: any way to block incoming SMTP after N unsuccesful login tries?
3 Replies
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Michail Pappas
339
+1/-0
9.2: any way to block incoming SMTP after N unsuccesful login tries?
«
on:
May 24, 2017, 07:30:00 AM »
Well the subject says it all. I'm looking for a way to block incoming crack login attempts. They are not very fast, 1 per 2'-3' minutes, but still it would be nice if I could somehow auto-blacklist them. I believe SSH on SME offers this functionality.
Is what I am asking already offered perhaps by some qpsmtpd plugins?
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guest22
Re: 9.2: any way to block incoming SMTP after N unsuccesful login tries?
«
Reply #1 on:
May 24, 2017, 08:17:55 AM »
Maybe this can help
https://wiki.contribs.org/Fail2ban
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Michail Pappas
339
+1/-0
Re: 9.2: any way to block incoming SMTP after N unsuccesful login tries?
«
Reply #2 on:
May 24, 2017, 09:21:07 AM »
I was hoping for a much less obtrusive change, something preferably included in the current qpsmtpd build.
Otherwise, fail2ban seems perfect for the purpose, I'll also consider it as well, thanks.
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Stefano
10,836
+2/-0
Re: 9.2: any way to block incoming SMTP after N unsuccesful login tries?
«
Reply #3 on:
May 24, 2017, 10:45:26 AM »
fail2ban exists exactly to do what you're asking for
you can customize it to wonk only with qpsmtpd and, using custom fragments, you can adapt it to your needs
give it a try
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Koozali.org: home of the SME Server
Obsolete Releases
SME Server 9.x
Topic:
9.2: any way to block incoming SMTP after N unsuccesful login tries?