The caching web proxy system in Mac OS X Server accelerates workgroup web access and improves security. Your proxy server can store frequently accessed outside information on the hard drive so that your users get data locally instead of retrieving it from across the globe. You can also configure your proxy server to block internal requests so that, for instance, children can't access content such as adult sites or advertisements. The DHCP server automatically assigns and leases IP addresses to computers as they are added to your network. Machines and services on the Internet are located either by their unique IP addresses, or by names.
Names make it easier for users to remember Web addresses.
The included DNS server translates names to addresses for your users. While IP is the language of the Internet, sometimes it isn't as easy for your users to speak as AppleTalk. With SLP DA, you can group your IP-based network services into scopes. With SLP DA you can provide structure to services and resources on your IP-based networks. The best way to ensure your data security is to keep it inaccessible.