Nortel Communication Server; Gratuitous Address Resolution Protocol Protection; Extensible Authentication Protocol; Redeploying An Ip Phone 2004 - Nortel 1110 Fundamentals

128 Nortel IP Phone 2004

Gratuitous Address Resolution Protocol Protection

Gratuitous Address Resolution Protocol (GARP) Protection prevents the IP
Phone 2004 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
also 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 2004 for the first time using manual configuration"
(page 110)
using DHCP" (page

Extensible Authentication Protocol

Extensible Authentication Protocol (EAP) is a general protocol that fulfills
the protocol requirements defined by 802.1x. For further information about
802.1x, see
469).

Redeploying an IP Phone 2004

You can redeploy an existing previously configured IP Phone 2004 on the
same Call Server. For example, the IP Phone 2004 can be assigned to
a new user (new TN) or to an existing user who moved to a new subnet
by changing the TN of the IP Phone 2004. For further information, see
Converging the Data Network with VoIP Fundamentals (NN43001-260).
Procedure 22
Changing the TN of an existing IP Phone 2004
Step
1
Copyright © 2003–2007, Nortel Networks
.
— Speed: 10 (Mb) or 100(Mb)
— Auto-Negotiate Capability: N
— Auto-Negotiate Completed: N
or Procedure 19 "Installing an IP Phone 2004 for the first time
118).
Appendix "802.1x Port-based network access control" (page
Action
Repower the IP Phone 2004.

Nortel Communication Server 1000

IP Phones Fundamentals
NN43001-368 02.01 Standard
Release 5.0 7 December 2007
—End—
Procedure 18