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Where I work we have a lan, it is almost 100% windows machines except for 2 CentOS machines in which some clients connect to, via VPN. (very small network, <50 ip's used)
I would like to know if there is a way to block access from that machines to others in the network.
I'm already logging traffic (with IPTraff) to see if they're accessing other machines in the network others than the ones they should connect.
No, i don't think it's possible for now. All because they need to work inside our network and with machines(mainly printers) that we work with too. We can't isolate the resources.
They connect to those CentOS machines, and they need to connect to more machines inside of our network (mainly printers and one or two more computers). But, since they connect through VPN they have an internal ip and can access all network.
Ahh, and our network is workgroup based, not domain. Maybe that'll change in the upcoming months but i don't know when.