Invalid login attempts


 
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Operating Systems AIX Invalid login attempts
# 1  
Old 01-07-2009
Invalid login attempts

How can I see the number of invalid login attempts of a user?
Thanks,
# 2  
Old 01-07-2009
The lastlog file in /etc/security contains that information. You should be able to view it if you have root access and you could also write a script to search it. Good Luck.
# 3  
Old 01-07-2009
Thanks for the response jyoung. I tried to logoff and login again with my personal user, not root and entered an invalid password twice but when looking at /etc/security/lastlog as root I found the times I logged incorrectly are not counted:

personal-user:
time_last_login = 1231347962
tty_last_login = /dev/pts/2
unsuccessful_login_count = 0
time_last_unsuccessful_login = 1231347943
tty_last_unsuccessful_login = /dev/pts/2

How can I see those unsuccessful attempts?
# 4  
Old 01-07-2009
What you want to do is run the following command to view the /etc/security/failedlogin file:

who /etc/security/failedlogin

It may run for a while if your log file is large. I'm not sure how to tell it to only process a specific number of lines. You can pipe it to tail to view the end if that is all you want to look at, but the process is still going to run, eating CPU cycles until it gets to the end of the file. Maybe someone knows how to run this more efficiently.
# 5  
Old 01-07-2009
You can translate the entire /etc/security/failedlogin file with the following command:

/usr/sbin/acct/fwtmp < /etc/security/failedlogin > /tmp/newfile.txt

Last edited by Padow; 01-07-2009 at 05:46 PM..
Padow
# 6  
Old 01-07-2009
This is what I need, thanks mates. It shows up the username, TTY, node and date when the user failed to login to the system but I tought it would be easier to know this without having to translate it into ASCII code. Smilie Or there is one?
# 7  
Old 01-07-2009
Quote:
Originally Posted by indiana_tas
What you want to do is run the following command to view the /etc/security/failedlogin file:

who /etc/security/failedlogin

It may run for a while if your log file is large. I'm not sure how to tell it to only process a specific number of lines. You can pipe it to tail to view the end if that is all you want to look at, but the process is still going to run, eating CPU cycles until it gets to the end of the file. Maybe someone knows how to run this more efficiently.
indiana_tas, this is great in fact but using tail brings to the terminal some coded info so I prefer as it is more simple to use who. Piped I could do this:

Code:
# who /etc/security/failedlogin | tail -1

Which shows just the very last line of the file.
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