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I have decided to use Linux unbuntu to setup a DNS server and read where masquerading with this is a good idea. Can anyone give me information where I can either use a VLAN and based on this setup a DHCP scope for that subnet. I have 4 subnets and would like to turn on DHCP for each of those subnets. It does not have to be by VLAN but wanted to way that each of my subnets can get an automatic IP and would like to consolidate this to one box that could also perform as a DNS forwarder to the internet from these 4 subnets.
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I have decided to use Linux unbuntu to setup a DNS server and read where masquerading with this is a good idea. Can anyone give me information where I can either use a VLAN and based on this setup a DHCP scope for that subnet. I have 4 subnets and would like to turn on DHCP for each of those subnets. It does not have to be by VLAN but wanted to way that each of my subnets can get an automatic IP and would like to consolidate this to one box that could also perform as a DNS forwarder to the internet from these 4 subnets.

How to DNS Masquerade

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

The Dynamic Host Configuration Protocol (DHCP) is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol. DHCP allows for computers to be configured automatically to communicate with each other over an IP network without the need for manual setup by a network administrator. The implementation of DHCP relies on a DHCP server to hand out network configuration information to DHCP-capable clients that request an IP address (and other information required or useful in communicating with other devices on an IP network). In addition to an IP address, common configuration information served over DHCP includes a default gateway, subnet mask and DNS sever(s).

DHCP

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.