To control the security checking performed by WebSphere MQ, you must define switch profiles. A switch profile is a normal security profile that has a special meaning to WebSphere MQ. The access list in switch profiles is not used by WebSphere MQ.
When you set a security switch on, the security checks associated with the switch are performed. When you set a security switch off, the security checks associated with the switch are bypassed. The default is that all security switches are set on.