Network Card User Manual

212 RiverMaster Administrator’s Guide
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.