Administering an ISP Installation

Front-End Network

Since the front-end network consists of all the servers connected to the Internet (production Web servers), it handles traffic coming from and going to the Internet. It can also host the following:

SMTP and POP3 servers for e-mail connectivity
One NNTP server for private newsgroups
Note Mightyflight Toys doesn’t support Usenet. If the company did, it would have to come up with a different topology, because Usenet news exchanges a large amount of data among the production Web servers.
A production Web server and a staging Web server, in order to host and publish customer content.
Both of these servers exchange data through the back-end network; here, the Content Deployment feature of Site Server copies content from one server to another. This synchronizes content on high-traffic, multiserver Web sites.
A DNS server that holds the information for the Internet domains that are hosted in a server cluster.
The secondary DNS for all of these domains can be here, too. This would balance the workload of the primary DNS, if it were to be overloaded, thus distributing primary and secondary domains between the two computers.