Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers
1-4 Introduction
• PPP over Ethernet (PPPoE)
PPP over Ethernet is a protocol for connecting remote hosts to the Internet over an always-on
connection by simulating a dial-up connection.
Security
The Model RT311 and RT314 routers are equipped with several features designed to maintain
security, as described in this section.
• PCs Hidden by NAT
Network address translation (NAT) opens a temporary path to the Internet for requests
originating from the local network. Requests originating from outside the LAN are discarded,
preventing users outside the LAN from finding and directly accessing the PCs on the LAN.
• Packet Filtering
The Model RT311 and RT314 routers provide extensive packet filtering capabilities. Packets
are allowed or discarded based on their source or destination addresses, service port numbers,
or raw data patterns within the packet.
• Port-Address Translation
The Model RT311 and RT314 routers perform port-address translation. Requests originating
from outside the local network are allowed to reach particular local workstations based on the
type of service requested.
Easy Installation and Management
You can install, configure, and operate the Model RT311 or RT314 Internet Access Gateway
Router within minutes after connecting it to the ne twork. The following features simplify
installation and management tasks:
• Browser-based management
Browser-based configuration allows you to easily configure your router from almost any type
of personal computer, such as Windows, Macintosh, or Linux. A user-friendly Setup W izard is
provided and online help documentation is built into the browser-based Web Management
Interface.
• Manager Interface
The Manager interface manages and configures the router through an easily understood screen
process. You can access this interface through the MANAGER port on the rear panel of the
router or from across the network, using a Telnet session. The Manager Interface provides
access to advanced features such as custom filters.