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DBacount_Profiles.

Posted on 2011-10-24
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Is it possible to create a database account (in 9iR2) with a profile or other feature that implements the following:


1) system lock user account after 5 password attempts within 15 minute period
2) lock the account for 15 minutes only
3) teminate session after 30 minutes of inactivity.

did anything change in 11g for the above.
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Question by:sam15
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Expert Comment

by:Jacobfw
ID: 37021884
I believe you can do all those using 11g with CREATE PROFILE

http://download.oracle.com/docs/cd/B28359_01/server.111/b28286/statements_6010.htm
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by:sam15
ID: 37022134
It does not sound thre is a way to lock account for 5 attemtps within 15 minutes. It seems I may need a separate function for this.

FAILED_LOGIN_ATTEMPTS  Specify the number of failed attempts to log in to the user account before the account is locked. If you omit this clause, then the default is 10 days.

PASSWORD_LOCK_TIME  Specify the number of days an account will be locked after the specified number of consecutive failed login attempts. If you omit this clause, then the default is 1 day.

IDLE_TIME Specify the permitted periods of continuous inactive time during a session, expressed in minutes. Long-running queries and other operations are not subject to this limit.


1) system lock user account after 5 password attempts within 15 minute period

FAILED_LOGIN_ATTEMPTS = 5

2) lock the account for 15 minutes only

PASSWORD_LOCK_TIME = 15/1440

3) teminate session after 30 minutes of inactivity.

IDLE_TIME = 30
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Expert Comment

by:Jacobfw
ID: 37023703
Yes, that 15 minute period appears difficult to implement, however 11g has added a logon delay to increase security.  See SEC_PROTOCOL_ERROR_FURTHER_ACTION the options CONTINUE DROP and DELAY

http://oradbpedia.com/wiki/Oracle_11g_Password_Features#Hacking_Prevention_with_Failed_Logon_Delays

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Author Comment

by:sam15
ID: 37024177
so are #2 and #3 correct? is the only issue with #1.

can i do it using a pl/sql function tied to the profile.
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Expert Comment

by:Jacobfw
ID: 37024226
You are correct that #2 and #3 are covered.
#1 is covered for 5 tries but not within the 15 minute time limit you are suggesting.

However, the function is only used for password changes, not to verify the logon.

In order to provide additional logon processing and the check that you are looking for, you will need to have a custom logon process for "your application" that would not be enforced for direct connections to the Oracle Database like SQLPLUS.
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Author Comment

by:sam15
ID: 37028304
but this requirement is for direct client.serve connections for users that use sql*plus or winsql or toda to log into database.
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Expert Comment

by:Jacobfw
ID: 37030451
Yes, then you will be forced to utilize just the features mentioned above.
You could investigate the "Oracle Advanced Security" option.
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Author Comment

by:sam15
ID: 37040373
Can I run a database job every 5 minutes that checks if there is any locked accounts in the
database for over 15 minutes and unlock them?

This would remove the need to keep calling helpdesk or dba to unlock accounts and meet the
requirement #1.

do you any security hole in doing this?

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Accepted Solution

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Jacobfw earned 2000 total points
ID: 37040405
I think that this is possible, but definitely creates some additional security risks.
however, the routine could keep additional information about the user in another table, for auditing purposes as well as additional criteria like:

1) only unlock twice in any given week
2) send email to administrator when doing an unlock
3) don't unlock sesitive accounts or administrator accounts
4) don't unlock if last successful logon was more than 30 days ago (inactive account)

or others that you could determine.
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