Hi Davis & Pete Finnigan,

Thank you so much for your response. Let me go through
Pete Finnigan's security related white papers.

-Sami

-----Original Message-----
To: [EMAIL PROTECTED]
Date: Mon, 10 Nov 2003 16:56:13 +0000

The type of attack you are suggesting is a problem that exists with all 
systems not just Oracle databases. For example an attack against a system 
administrator/application owner account on any platform (Windows, Mainframe, 
Unix, Database) could all potentially be shutdown by too many logon attempt 
failures.

Often, with these type of accounts you cannot apply the same password mgmt 
rules (3 strikes and you are out). But having violation alerts/notification 
for attacks (ie. Audit trails) requirement for complex passwords that can 
withstand brute force attacks (eg. dictionary searches).

I would suggest following Pete Finnigan's advice would be prudent. He knows 
what he is talking about when it comes to security. I have a copy of the 
Oracle Security Step-by-Step guide he mentioned which is only available from 
the SANS Institute (SysAdmin, Auditing, Networking & Security).

If you work for a large corporation you will probably have a security 
officer. It might be a good idea to talk to them.

Also check out:

www.securityfocus.com
www.sans.org

btw Drake over reacted and was I thought very rude. I think Drake felt your 
question was best asked on a secured forum.

Cheers
David

>From: "Saminathan" <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
>Subject: Security : Denial Of Service
>Date: Sun, 09 Nov 2003 17:14:25 -0800
>
>Hi List,
>
>"A secure system makes data available to authorized users, without delay.
>Denial-of-service attacks are attempts to block authorized usersâ ability 
>to access
>and use the system when needed."
>
>By using user-profile one  can lock DB users if he/she provides wrong 
>password 3 times.
>Then DBA has to unlock  the users to make it work. By knowing DB userid 
>somebody can lock the DB users (by providing wrong password 3 times)
>so that when the actual user try to loing it will block him/her to access 
>the db.
>
>How does oracle address this "Denial Of Service" ?
>
>Any response would be highly appreciated.
>
>Thanks
>-Sami
>
>
>
>--
>Please see the official ORACLE-L FAQ: http://www.orafaq.net
>--
>Author: Saminathan
>   INET: [EMAIL PROTECTED]
>
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