User's Manual

Extensible Authentication Protocol 329

• Network Speed: 10 Mb or 100 Mb

•

Auto Sense/Negotiate

— Auto-Negotiate Capability: No

— Auto-Negotiate Completed: No

--End--

TFTP ﬁrmware upgrade

When you enter Cfg TFTP = 1 (for yes), and enter an IP address, the IP

Phone searches for an upgrade file on the TFTP Server.

Users of CS 1000 Release 4.5, or later do not need to enter a TFTP IP

address.

For further information about TFTP firmware upgrade, see “TFTP Server”

(page 557).

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 Procedure 76

“Installing the IP Phone 1110 using manual configuration” (page 311) or

Procedure 77 “Installing an IP Phone 1110 using DHCP” (page 319).

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 “802.1x Port-based network access control” (page 479).

Nortel Communication Server 1000

IP Phones Fundamentals

NN43001-368 02.07

5 February 2009