Gets state switched on or off of the adapter firewall.
PRL_RESULT PrlVmDevNet_IsFirewallEnabled( PRL_HANDLE hVmDev, PRL_BOOL_PTR pbEnabled );
PrlApiDeprecated.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_SUCCESS - function completed successfully.