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The title should be self explanatory but more in detail I'm looking for a way to protect the ldap from LAN brute force attacks.

It would be fine to prevent password guessing by locking a password for a specified period of time after repeated authentication failures. It doesn't matter if this can be turned into a DOS.

Unfortunately I can't find a way to do this and the documents I've found are really confused.

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    what LDAP server? What OS/ This seems like something that is likely to be very closely tied to a specific implementation. For example, you could probably do something with fail2ban on a Linux system. Or maybe do some kind of rate-limiting with iptables. Your LDAP server may have built-in rate limiting features, or maybe not. – Zoredache Jan 16 '13 at 7:20
  • Sorry, my bad. Openldap on debian. @Zoredache thanks for the tip: I'll dig about fail2ban – damko Jan 16 '13 at 15:39
  • I found something interesting here. zytrax.com/books/ldap/ch6/ppolicy.html I'll do some tests and then I'll report something – damko Jan 18 '13 at 16:39

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