Configuring Resource Access Restriction

Configure file : /etc/sercurity/limit.conf

 e.g 

#@student hard nproc 20   /member of student user group can maximally have 20 running process 
#@faculty soft nproc 20    / member of faculty user group will receive a waring if there are more than 20 running process 
##@student        -       maxlogins       4 / there can maxmally have 4 user log in within student user group