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DHCP SOlution

I have a DHCP Server, serving Public Ip's, right now, but I need to put it behind a firewall,

The first option is change the Server IP address for a private behind the firewall and open ports or make the firewall relay to the outside interface.

But can I have a DHCP server in Ip 192.168.1.100 and create a scope on xx.xx.110.2 to xx.xx.110.254 ?

igf I connect a PC to the same witch it wont give me any IP at all. any knwoledge about this?
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sirexilon
Asked:
sirexilon
1 Solution
 
magicommincCommented:
>But can I have a DHCP server in Ip 192.168.1.100 and create a scope on xx.xx.110.2 to xx.xx.110.254 ?
Yes, you can. You can certainly have DHCP scope totally different than server's NIC Ip address. Since DHCP works in a broadcast manner, you need to have a DHCP relay agent.
In your case, you need to configure your firewall/router to relay the DHCP request for xx.xx.110/24, of course, you need to have one of your firewall/router's interface on the xx.xx.110.0/24 network to receive the DHCP request (broadcast). check this link out:
http://tcpmag.com/qanda/article.asp?EditorialsID=285

>igf I connect a PC to the same witch it wont give me any IP at all. any knwoledge about this?
If you plug your PC to the same switch with DHCP server, server NIC at 192,168.1.100 will hear your DHCP request (255.255.255.255), but it won't do anything since you don't have any scope defined for 192.168.1.0 network (if you define a scope for 192.168.1.0 network, it will).
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SunBowCommented:
It depends on manufacturer.
DHCP is broadcast, locally, source has no IP address.
That means any topology trying to use it has to reconfigure routers to permit it, and/or has to have some surrogates to forward it (to identify which subnet is which)
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