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Date:      Fri, 10 Mar 2000 17:51:47 -0800 (PST)
From:      Bhishan Hemrajani <bhishan@cytosine.dhs.org>
To:        freebsd-questions@freebsd.org
Subject:   DoS attack, Mail errors on new account
Message-ID:  <200003110151.RAA15250@cytosine.dhs.org>

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I have two questions for you.

1. I have experienced a DoS attack by one of my users
   who has used 100% of the cpu. I do have limits, and the
   process was killed after consuming 1h of CPU time.
   is there any way to limit the process to CPU usage?

2. After I create a user, the mail box doesn't seem to work
   correctly. I try to run elm as a new user that I created
   and it is exiting with a signal 6 because it cannot read
   /var/mail/user.

This is a printout of ll in that dir after that command has run:
-r--------  1 test     mail      5 Mar 10 17:36 test.lock

This is a normal users file:
-rw-------  1 user     users     0 Jan 29 18:29 user

   the problem seems to automatically fix itself after a
   while, or after someone sends a message to that mailbox.
   Is there any way to have this fixed automatically?
   Also, on another box I have seen that the files have the
   permission of user/mail. Is this because of security? And
   how can I impliment it like that if it is for security?

Please help.

--bhishan


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