Restrict/Limit Users using (/etc/security/)

User limitations are set in the following files:

• File: /etc/security/limits.conf :
  • core - limits the core file size (KB)
  • data - max data size (KB)
  • fsize - maximum filesize (KB)
  • memlock - max locked-in-memory address space (KB)
  • nofile - max number of open files
  • rss - max resident set size (KB)
  • stack - max stack size (KB)
  • cpu - max CPU time (MIN)
  • nproc - max number of processes
  • as - address space limit
  • maxlogins - max number of logins for this user
  • priority - the priority to run user process with
  • locks - max number of file locks the user can hold
  •  
• File: /etc/security/access.conf : 
  Limit access by network or local console logins.

• File: /etc/security/group.conf : 
  Grant/restrict group device access. 

 

• File: /etc/security/time.conf : 
  Restrict user access by time, day.