6.4.1+Computers+in+Networks

=__**The Role of Computers in different Networks**__=
 * Servers** (also see section 3.4.1 LAN, WAN, Client, Server):
 * Control operation of network
 * Provides services such as printing or file storage possibilities
 * Security measures and authentication systems will be in place to protect the server's and users' data
 * Servers need to have server software installed in order to perform their tasks, manage the network and communicate with clients and other servers


 * Clients** (also see section 3.4.1 LAN, WAN, Client, Server):
 * Allow users to access the ISP, the Internet and/or the services provided in the network (ex. printing or file storage possibilities)
 * Clients need to have client software installed in order to communicate to the OS of the server


 * Providers' computers**
 * Servers that provide access to the Internet
 * Control the access to the Internet from other servers & clients and the communications between clients and local network servers


 * Gateway computers**
 * Provide connection from one Network to another (ex. between a LAN and a WAN)
 * For example whenever one accesses the Internet, one does so through a gateway
 * Gateways usually include security measures such as filtering, a proxy server or a firewall