My wireless network connection says validating identity

Windows XP PPPo E connections support PAP authentication and, by default, the PPPo E connection allows the use of unsecured passwords.

Windows XP PPPo E connection will attempt to use secured password authentication protocols such as Microsoft Challenge Handshake Authentication Protocol version 2 (MS-CHAP v2), Microsoft Challenge Handshake Authentication Protocol (MS-CHAP), Challenge Handshake Authentication Protocol (CHAP), and Shiva Password Authentication Protocol (SPAP), before offering to use PAP.

Acknowledgements Rob Trace, Program Manager David Eitelbach, Program Manager Introduction PPPo E Support in Windows XP How to Configure Windows XP for PPPo E Does my ISP Support Windows XP?

Issues with Windows XP PPPo E support Summary Related Links Internet service providers (ISPs) that use broadband Internet access technologies deployed in a bridged Ethernet topology, such as cable modem or Digital Subscriber Line (DSL), need a way to distinguish individual users so that Internet usage can be accounted for, and, if appropriate, billed to individual users.

Maximum Transmission Unit There is no ability to configure the maximum transmission unit (MTU) of the PPPo E connection from the properties of the connection.

By default, a Windows XP PPPo E connection supports an IP MTU of 1480 bytes.

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The combination of PPP and Ethernet is known as Point-to-Point Protocol over Ethernet (PPPo E) and is defined in the Internet Engineering Task Force RFC 2516.Because Ethernet is inherently a shared access technology, it provides no such facilities.By combining the Point-to-Point Protocol (PPP) with Ethernet, an ISP can use Ethernet topologies and still maintain the individuality of user access as if they were using a dial-up modem.When PAP is used as the PPP authentication protocol, the Internet user's name and password are sent on the network in a clear text form.Computers connected to the network segment of the access device could capture these packets and easily determine the user names and passwords of connecting users.

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