Gratuitous Address Resolution Protocol Protection; Extensible Authentication Protocol; Redeploying An Ip Phone 2007 - Nortel 1110 Fundamentals

200 Nortel IP Phone 2007

Gratuitous Address Resolution Protocol Protection

Gratuitous Address Resolution Protocol (GARP) Protection prevents the IP
Phone 2007 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 2007" (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
455).

Redeploying an IP Phone 2007

You can redeploy an existing, previously-configured IP Phone 2007 on
the same system. For example, the IP Phone 2007 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 2007. For further information, see
Converging the Data Network with VoIP Fundamentals (NN43001-260).
Procedure 38
Changing the TN of an existing IP Phone 2007
Step
1
Copyright © 2003–2007, Nortel Networks
.
•
Duplex: Full
• Speed: 10 (Mb) or 100 (Mb)
• Auto-Negotiate Capability: N
• Auto-Negotiate Completed: N
Appendix "802.1x Port-based network access control" (page
Action
Repower the IP Phone 2007.
During the reboot sequence of a previously configured IP Phone, the
IP Phone 2007 displays the existing node number for approximately
five seconds.
Nortel Communication Server 1000
IP Phones Fundamentals
NN43001-368 01.02 Standard
Release 5.0 20 June 2007
—End—
189).
Procedure 35