You can set a limit on the failed attempts coming from the same IP for a given user name. Say that after three failed attempts in the same 10 minutes, login attempts for the given username from the same IP are rejected for one hour. This way a legitimate user would only be hurt if he made a mistake on his own password several times in a row, and an attacker wouldn't be able to DOS a user unless he were also able to spoof the user's IP address.

Cheers

Antonio

The stupider the astronaut, the easier it is to win the trip to Vega - A. Tucket

In reply to Re: Password hacker killer by abell
in thread Password hacker killer by belize

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