Autosensing Ethernet Connections With Auto Uplink; Extensive Protocol Support - NETGEAR SRX5308 - ProSafe® Quad WAN Gigabit SSL VPN Firewall Reference Manual

Autosensing Ethernet Connections with Auto Uplink

With its internal four-port 10/100/1000 Mbps switch and four 10/100/1000 WAN ports, the
SRX5308 can connect to either a 10 Mbps standard Ethernet network, a 100 Mbps Fast Ethernet
network, or a 1000 Mbps Gigabit Ethernet network. The four LAN and four WAN interfaces are
autosensing and capable of full-duplex or half-duplex operation.
The SRX5308 incorporates Auto Uplink
whether the Ethernet cable plugged into the port should have a "normal" connection such as to a
PC or an "uplink" connection such as to a switch or hub. That port then configures itself correctly.
This feature eliminates the need for you to think about crossover cables, as Auto Uplink
accommodates either type of cable to make the right connection.

Extensive Protocol Support

The SRX5308 supports the Transmission Control Protocol/Internet Protocol (TCP/IP) and Routing
Information Protocol (RIP). For further information about TCP/IP, see
Requirements" on page
• IP address sharing by NAT. The SRX5308 allows many networked PCs to share an Internet
account using only a single IP address, which might be statically or dynamically assigned by
your Internet Service Provider (ISP). This technique, known as NAT, allows the use of an
inexpensive single-user ISP account.
• Automatic configuration of attached PCs by DHCP. The SRX5308 dynamically assigns
network configuration information, including IP, gateway, and Domain Name Server (DNS)
addresses, to attached PCs on the LAN using the Dynamic Host Configuration Protocol
(DHCP). This feature greatly simplifies configuration of PCs on your local network.
• DNS proxy. When DHCP is enabled and no DNS addresses are specified, the SRX5308
provides its own address as a DNS server to the attached PCs. The SRX5308 obtains actual
DNS addresses from the ISP during connection setup and forwards DNS requests from the
LAN.
• PPP over Ethernet (PPPoE). PPPoE is a protocol for connecting remote hosts to the Internet
over a DSL connection by simulating a dial-up connection. This feature eliminates the need to
run a login program.
• Quality of Service (QoS). The SRX5308 supports QoS, including traffic prioritization and
traffic classification with Type of Service (ToS) and Differentiated Services Code Point
(DSCP) marking.
Introduction
ProSafe Gigabit Quad WAN SSL VPN Firewall SRX5308 Reference Manual
TM technology. Each Ethernet port automatically senses
B-3. The SRX5308 provides the following protocol support:
v1.0, April 2010
"Internet Configuration
1-5