Disable posix and os2 subsystems

[Guest]

What is the simplest most effective way to disable the os2 & posix subsystems
on windows 2000 & 2003 servers?

Is clearing
HKLM\System\CurrentControlSet\Control\Session Manager\Subsystems\optional
value sufficient or do you have to also delete
HKLM\System\CurrentControlSet\Control\Session Manager\Subsystems\os2 & posix
values and delete
HKLM\System\CurrentControlSet\Control\Session Manager\Environment\Os2LibPath?

Thanks
Tim

 

[Steven L Umbach]

According to MS documentation [example below] you need to clear the values
under optional.

http://www.microsoft.com/resources/...0/server/reskit/en-us/prork/pric_run_caom.asp

For Windows 2003 Servers you can use the security option for system
settings: optional subsystems and define it with no subsystems listed. Local
Security Policy can be opened via secpol.msc and security policy can also be
managed on a group of computers in a domain via Group Policy. --- Steve