Securty

Security is an important consideration when selecting a WAN protocol�"security relating to
protection from corruption, theft, or misuse of digital transmissions. Some applications, such as
financial ones, require a high level of security. For example, many designers in financial institutions
will select private point-to-point connections over fiber-optic cable. In installations that
require less security, the designer might opt for a public connection, which frequently has a substantially
reduced cost.
Remote access solutions can alter the security model of a corporation substantially, because
it is reasonable to assume that some business data will be stored remotely. This immediately
causes a security concern because a lost or stolen notebook can quickly lead to the release of corporate
data. The network designer will typically be more concerned with the security requirements
that will prevent unauthorized access to the network. This, again, is a fairly simple model
because the majority of the security configuration will be placed on the remote access servers.