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

300 Nortel IP Phone 1110

Gratuitous Address Resolution Protocol Protection

Gratuitous Address Resolution Protocol (GARP) Protection protects the IP
Phone 1110 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. This allows the
malicious device to launch 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 1110 for the first time using manual configuration"
(page 283)
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
455).

Redeploying an IP Phone 1110

You can redeploy an existing previously configured IP Phone 1110 on the
same Call Server. For example, the IP Phone 1110 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 1110. For further information, see
Converging the Data Network with VoIP Fundamentals (NN43001-260).
Procedure 62
Changing the TN of an existing IP Phone 1110
Step
1
2
Copyright © 2003–2007, Nortel Networks
.
or Procedure 59 "Installing an IP Phone 1110 for the first time
290).
Appendix "802.1x Port-based network access control" (page
Action
Repower the IP Phone 1110.
During the reboot sequence of a previously configured IP Phone, the
IP Phone 1110 displays the existing node number for approximately
5 seconds.
If the node password is enabled and NULL, choose one of the
following
a. Disable the password.
b. Set the password as non-NULL.
Nortel Communication Server 1000
IP Phones Fundamentals
NN43001-368 01.02 Standard
Release 5.0 20 June 2007
Procedure 58