Efficient Networks 5200 Series, 5500 Series, 5400 Series manual Icsa 3.0a-compliancy

SpeedStream Router User Guide

Note You have the option to change the router’s Ethernet IP address without rebooting the router. If you have configured a specific set of IP addresses for the DHCP server, then you change the Ethernet IP address to something that is on a different subnet than your DHCP server’s addresses, and you do not reboot, the router will not recognize the change. The DHCP server will not be able to hand out addresses. Be sure to reboot the router when you change the Ethernet IP address in this manner.

DNS (Domain Name Service)

The router supports Domain Name Service (DNS) which provides hostname-to-IP address resolution for LAN-side clients. There are two distinct DNS functions provided by the router: the DNS resolver and the DNS server.

DNS Resolver

The DNS resolver is the entity that creates a DNS request for transmission to a DNS server (which may be co-located in the router or be an external DNS server). The DNS resolver is only used by certain user interface commands that allow a hostname argument as well as an IP address argument.

The DNS resolver requires the user to configure a single DNS server IP address to which to direct DNS requests. This IP address may be the router itself in the situation where the DNS server is enabled on the router or it may be any reachable IP address at which a DNS server is available.

DNS Server

The DNS server is the entity that responds to DNS requests. The DNS server provides IP address-to- hostname resolution and hostname-to-IP address resolution for LAN clients via DNS requests. The DNS server also supports hostname-to-IP address resolution for user interface commands where appropriate in response to requests submitted by the DNS resolver.

The DNS server is enabled by default from the factory and provides the router with the default hostname “ENI-Router”.

DSL (Digital Subscriber Line)

DSL describes a family of digital services provided by local telephone companies to local subscribers. There are many forms of DSL: Asymmetric DSL (DSL), Symmetric (or single pair) DSL (SDSL), and many others. The router supports DSL, which provides rates of up to 6 Mbps downstream from the customer and up to 640 Kbps upstream from the customer. DSL can carry voice and data signals at the same time in both directions.

Encapsulation Methods: PPP and RFC 1483

The 5600 series router transmits data via ATM Virtual Channels (VCs). The data is encapsulated using methods Point-to-Point Protocol (PPP) or RFC 1483 encapsulation. A brief explanation of these two encapsulation methods follows.

ICSA 3.0a-compliancy

ICSA Labs, a division of TruSecure Corporation, tests and defines firewall security criteria, providing certification to products that meet their exacting standards. For more information, go to http://www.icsalabs.com/html/communities/firewalls/index.shtml.

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