Re: [Dovecot] limiting the per-time connections from one single IP address

suomi wrote:

Hi every we had a havy pop3 attach yesterday morning: about 400'000 connects in three hours from one single IP address within wandadoo.fr.

the easiest way, to protect the dovecot server against such attacks would be to limit the number of connections anyone can open from one single IP address to the server in a certain time.

this feature is available in newer versions of postfix, where i have limited the number of SMTP connections possible from one single IP address in one minute to three (3).

thank you very much for any valid hint.

suomi There is no such feature in dovecot, but you can use iptables firewall to do this. An article with examples: http://www.debian-administration.org/articles/187

Uldis