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Administrator’s Guide for SIP-T46G IP Phone170IEEE 802.1X authentication is an IEEE standard for Port-based Network Access Control(PNAC). It is part of the IEEE 802.1 group of networking protocols. It provides anauthentication mechanism to devices wishing to attach to a LAN or WLAN. The 802.1Xauthentication involves three parties: a supplicant, an authenticator and anauthentication server. The supplicant is the IP phone that wishes to attach to the LAN orWLAN. With 802.1X port-based authentication, the IP phone provides credentials, suchas username and password, to the authenticator, and then the authenticator forwardsthe credentials to the authentication server for verification. If the authentication serverdetermines the credentials are valid, the IP phone is allowed to access resourceslocated on the protected side of the network.IP phones support using the EAP-MD5, EAP-TLS, PEAP-MSCHAPV2 andEAP-TTLS/EAP-MSCHAPv2 protocols for 802.1X authentication.Procedure802.1X authentication can be configured using the configuration files or locally.Configuration File .cfgConfigure the 802.1Xauthentication on the IP phone.For more information, refer to802.1X on page 324.LocalWeb User InterfaceConfigure the 802.1Xauthentication on the IP phone.Navigate to:http:///servlet?p=network-adv&q=loadPhone User Interface Configure the 802.1Xauthentication on the IP phone.To configure the 802.1X via web user interface:1. Click on Network->Advanced.2. In the 802.1x block, select the desired protocol from the pull-down list of Mode802.1x.a) If you select EAP-MD5:1) Enter the username for authentication in the Identity field.
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