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NETGEAR FVS318 - ProSafe VPN Firewall Router User Manual

NETGEAR FVS318 - ProSafe VPN Firewall Router
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Reference Manual for the ProSafe VPN Firewall FVS318v3
B-14 Network, Routing, and Firewall Basics
January 2005
Figure B-6: Category 5 UTP cable with male RJ-45 plug at each end
Note: Flat “silver satin” telephone cable may have the same RJ-45 plug. However, using telephone
cable results in excessive collisions, causing the attached port to be partitioned or disconnected
from the network.
Uplink Switches, Crossover Cables, and MDI/MDIX Switching
In the wiring table above, the concept of transmit and receive are from the perspective of the PC,
which is wired as Media Dependant Interface (MDI). In this wiring, the PC transmits on pins 1 and
2. At the hub, the perspective is reversed, and the hub receives on pins 1 and 2. This wiring is
referred to as Media Dependant Interface - Crossover (MDI-X).
When connecting a PC to a PC, or a hub port to another hub port, the transmit pair must be
exchanged with the receive pair. This exchange is done by one of two mechanisms. Most hubs
provide an Uplink switch which will exchange the pairs on one port, allowing that port to be
connected to another hub using a normal Ethernet cable. The second method is to use a crossover
cable, which is a special cable in which the transmit and receive pairs are exchanged at one of the
two cable connectors. Crossover cables are often unmarked as such, and must be identified by
comparing the two connectors. Since the cable connectors are clear plastic, it is easy to place them
side by side and view the order of the wire colors on each. On a straight-through cable, the color
order will be the same on both connectors. On a crossover cable, the orange and blue pairs will be
exchanged from one connector to the other.

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NETGEAR FVS318 - ProSafe VPN Firewall Router Specifications

General IconGeneral
ModelFVS318
CategoryFirewall
WAN Ports1
LAN Ports8
VPN Pass-throughYes
VPN Tunnels8
SPI FirewallYes
Data Link ProtocolEthernet, Fast Ethernet
VPN ProtocolIPSec
Compliant StandardsIEEE 802.3, IEEE 802.3u
RAM8 MB
Flash Memory4 MB
Power SupplyExternal power adapter
Network / Transport ProtocolTCP/IP, UDP
Encryption Algorithm3DES
FeaturesNAT support, URL filtering, DHCP server, DoS attack prevention
Status IndicatorsPort status, power

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