acl
acl — Access Control Lists
Command manuals for access
apparmor
AppArmor - kernel enhancement to confine programs to a limited set of resources.
chmod
chmod - change file mode bits
chown
chown - change file owner and group
pam
pam - Netpbm common 2-dimensional bitmap format
ssh
ssh — OpenSSH remote login client
sshd
sshd — OpenSSH daemon
telnet
telnet — user interface to the TELNET protocol
xauth
xauth - X authority file utility
xhost
xhost - server access control program for X