Prevent authentication from specific machines
93889
Block Administrators authentication attemps from workstations
114871
Hide processes from other users based on groups (under Linux)?
93346
How to block specific apps from opening in specific accounts
80492
Allow only RemoteApp, not Remote Desktop
4890
Run an executable as different user in linux without knowing the password
156230
How to force users to re-authenticate on specific pages?
15510
How do I uniquely identify computers visiting my web site?
134760
Blocking *.example.com at the OS (Windows) level
154109
Restrict the visibility of EC2 instances using IAM accounts
103107
Distributed authentication system (different domains, separatate databases)
148398
Disable SSH login via password on a per-user basis?
68563
How do I restrict a specified SSH user to connect only from one IP or hostname?
74317
How can i restrict /admin login page to a particular IP only?
71884
Prevent admin users from reading my files
94379
how to disable SSH login with password for some users?
51782
What is the best way to allow a domain user to start and stop services on the machine?
19328
How to secure my laptop so that hacking by physical access is not possible?