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Single AD/DHCP/DNS Server - multiple subnets

de flag

I'm subnetting the small network of our business for management and security reasons. Prior to this I had:

  • 172.16.1.0/24

And now I want this:

  • 172.16.1.0/24 -> corporate LAN
  • 172.17.0.0/24 -> management of servers
  • 172.17.1.0/24 -> hosting - managed services
  • 172.17.2.0/24 -> game servers hosting
  • 172.17.127.0/24 -> storage resources
  • 172.17.128.0/20 -> hosting - servers (VPS, apps, etc)

I have a pfSense router between those subnets. All of the subnets have access to the Internet.

What I want to know is if there is a possibility to have one Active Directory, DNS and DHCP service running on a single server in the managed services subnet (172.17.1.0/24), and make it reachable by the subnets.

I already looked at DHCP relay, I guess I'll have to use it, but what about DNS and Active Directory? Anything to do on the router?

djdomi avatar
za flag
What is the issue? Servers don't use in generally a DHCP lease. You only need to take care of the routing of each net, in case you only use CIDR 24 instead of 16 on a 172 network. And the Shortly answer would be, it may be possible depends on the use. but since it looks a bit offtopic be more specific to your question.
LeRouteur avatar
de flag
Sure, servers don't use DHCP, but since I want the created VPS to be reachable after their installation, I have to use DHCP. Regarding the routing, it's working fine, I can reach each subnet without any trouble. But what about the DNS? Is there a DNS relay or something like this?
djdomi avatar
za flag
You have to decide, either you want to use the AD with DNS and DHCP or use a external DHCP.
LeRouteur avatar
de flag
I said I want to use AD/DHCP/DNS on a single server. The question is clear imho: what do I need to do to spread the usage of those services across the subnets I listed above?
djdomi avatar
za flag
If you would use AD you can descripe and use Locations to split the Subnets. But for This you have to use only AD/DNS/DHCP instead of using a relay on Windows Site.
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