VM:Secure
Security Features

This section describes the cacc security features available to you.
vmx32besp
This section describes the
VM:Secure
security features available to you.
For complete security control, enable the Rules Facility.
Verifying Passwords with Another Security System
To verify logon passwords that users enter while executing 
VM:Secure
 commands, use the CHKPASS user exit. This user exit is essential for sites that use security packages where the logon password is not stored in the CP directory. The user exit coding can verify for valid passwords using the security package, instead of looking in the source directory for the user ID’s password.
For more information, see CHKPASS user exit in the
Reference
.
Verifying Directory Link Statements
To verify a directory link to a virtual machine, use the LINK user exit. This user exit can prevent users from defining directory links to user IDs you consider sensitive, such as MAINT or OPERATOR.
For more information, see LINK user exit in the
Reference
.
Verifying Minidisk Link Modes and Passwords
To accept or reject changes made to a minidisk’s access mode and link passwords, use the MINIDISK user exit. This user exit can secure minidisks that you consider sensitive or essential.
For more information, see MINIDISK user exit in the
Reference
.
Verifying Changes to Logon Passwords
To verify specific logon password changes, use the PASSWORD user exit. This user exit lets you define standards for how many characters a password can have and what those characters can be.
For more information about the  PASSWORD user exit, see the section "User Exit Reference" in the
Reference
.
Synchronizing Passwords
Virtual machines on VM can use the
VM:Secure
PASSCHNG user exit to keep passwords synchronized between the VM system where
VM:Secure
is running and other computer systems such as session managers, VM systems, MVS systems, and LAN systems.
For more information about synchronizing passwords, see the
Rules Facility
.