topic Re: maximum simultaneous logins in Operating System - HP-UX

maximum simultaneous logins

Alejandro Anguiano — Fri, 28 Nov 2003 14:36:48 GMT

I need to configure the system with the limit of simultaneous logins for some users, how can i do it?

Txs

Re: maximum simultaneous logins

Karthik S S — Fri, 28 Nov 2003 14:40:31 GMT

Best way is to call a script from /etc/profile which will check the number of times that a user logged in using who command and if it exceeds the defined limit logout that user.

-Karthik S S

Re: maximum simultaneous logins

Alejandro Anguiano — Fri, 28 Nov 2003 14:49:06 GMT

tvm
do you have an script example

Re: maximum simultaneous logins

Paula J Frazer-Campbell — Fri, 28 Nov 2003 15:04:34 GMT

Hi

this should help:-

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=52512

Paula

Re: maximum simultaneous logins

Hein van den Heuvel — Fri, 28 Nov 2003 15:12:40 GMT

If you try 'limit login' as search string in the forum header, you'll get several useful earlier answers. Notably:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=98655

hth,
Hein.

Re: maximum simultaneous logins

Umapathy S — Fri, 28 Nov 2003 15:13:10 GMT

Try this.
I havent tested this.

----
no_logins=`who|grep $LOGNAME|wc -l`
if [[ $no_logins -gt 4 ]]
then
echo "you have exceeded the limit"
exit
fi
-----
replace the 4 with the number you want

HTH,
Umapathy

Re: maximum simultaneous logins

Karthik S S — Fri, 28 Nov 2003 15:33:37 GMT

If you are using KSH then add the following lines in /etc/profile,

MAXINST=5
CURRINST=$(who | awk -F " " '{print $1 }' | grep `whoami` |wc -l)
if [ $CURRINST -gt $MAXINST ]
then
echo "You have exceeded the login limit"
exit
fi

You can also customize the MAXINST variable for individual users by adding these lines in .profile of individual users.

-Karthik S S

Re: maximum simultaneous logins

Bill Hassell — Fri, 28 Nov 2003 15:47:19 GMT

If you want to limit every user (except root) to a maximum number of logins, use the /etc/default/security file and add the line:

NUMBER_OF_LOGINS_ALLOWED=4

and now no more than 4 logins total for every user is allowed. To have random limits based on the user ID, you'll need to use the /etc/profile and /etc/csh.login code to manage each user's limit by exiting when the limit has been exceeded. You'll likely need the patch PHCO_27721 for 11.0 and PHCO_27694 for 11.11 (both will patch the /usr/bin/login file only, and do not require a reboot)