Enterasys Networks Network Card manual Network Administrator, 212

Appendix A

Glossary

incoming packets back into local IP addresses. This provides security since each outgoing or incoming request must undergo a translation process that also offers the chance to qualify or authenticate the request or match it with a previous request. NAT also conserves the number of global IP addresses that a

company uses and permits the use of a single IP address to interface with the world. RiverMaster permits the Aurorean Network Gateway to be configured as a NAT server. The ANG also offers Firewall/NAT Traversal as a policy option to Aurorean Client users such as contractors, visitors and

others, who are connected temporarily on internal networks, permitting them

to dial out of the network across the firewall to their own network and return to their computer. Aurorean Client uses this feature in conjunction with the

HyperText Transfer Protocol Secure (HTTP-S) to successfully traverse the NAT server without causing harm to the native network.

Network Administrator

The person responsible for installing and maintaining a company’s network equipment, and also insuring that network resources (such as servers and the applications running on them) are consistently available and performing

well. In terms of Enterasys Networks products, this person physically installs Aurorean Policy Servers and Aurorean Network Gateways, distributes Aurorean Client to remote users, and runs RiverMaster software on

his/her computer to manage the entire VPN.

Point of Presence (POP)

In Internet terms, the physical site that contains an ISP’s network equipment. Remote users dial into the POP, authenticate against the ISP’s customer database, and then gain access to the Internet. ISPs typically have POPs scattered throughout their service area, so that can customers can dial a local phone call and avoid paying long-distance charges when accessing the Internet.

Point-to-Point Protocol (PPP)

The Internet standard for sending network traffic over serial lines, such as dial-up phone lines. Unlike its predecessor SLIP (Serial Line Internet Protocol), PPP provides error detection and compression capabilities.

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