Gratuitous Address Resolution Protocol Protection; Checking Ethernet Statistics - Nortel 1110 Fundamentals

When the IP Phone restarts, the firmware reads the setting for Full Duplex
mode and sets the LAN Ethernet port, PC Ethernet port, duplex, and speed
accordingly.
Use
activation of Full Duplex mode.
Procedure 13

Checking Ethernet Statistics

Step
1
2

Gratuitous Address Resolution Protocol Protection

Gratuitous Address Resolution Protocol (GARP) Protection prevents the IP
Phone 2002 from GARP Spoof attacks on the network. In a GARP Spoof
attack, a malicious device on the network takes over an IP address (usually
the default gateway) by sending unsolicited (or Gratuitous) ARP messages,
thus manipulating the ARP table of the victim machine. The malicious
device launches a variety of attacks on the network, that results in undesired
traffic routing. For example, a GARP attack can convince the victim machine
that the malicious device is the default gateway. In this scenario, all traffic
from the victim machine flows through the malicious device.
To enable GARP Protection during configuration, see
"Installing the IP Phone 2002 for the first time using manual configuration"
(page 79)
using DHCP" (page
Copyright © 2003–2007, Nortel Networks
.
Procedure 13 "Checking Ethernet Statistics" (page 95)
Action
Double-click the Services key. The Network Diagnostics menu
appears.
Select Ethernet Statistics.
• If Full Duplex mode is active, the following is displayed:
— Link: UP
— Duplex: Full
— Speed: 10 (Mb) or 100(Mb)
— Auto-Negotiate Capability: N
— Auto-Negotiate Completed: N
or Procedure 11 "Installing an IP Phone 2002 for the first time
86).
Nortel Communication Server 1000
IP Phones Fundamentals
NN43001-368 01.02 Standard
Release 5.0 20 June 2007
Gratuitous Address Resolution Protocol Protection 95
—End—
to confirm
Procedure 10