[Zope] Domain/Subnet/IP Based Authentication/Authorization

Any new developments on securing ZOPE content based on ip address or domain? I know about the one "solution" (http://plone.org/documentation/howto/HowToDomainIntranet) there but apparently it isn't practical to use. In short I need to control access based on either individual subscriptions (normal zope access) and based on ip address (all users from this lists of subnets are allowed to see content).