Lantronix EDS1100 Guía de usuario descargar pdf (Pagina 74)

10: Services Settings

EDS1100/2100 User Guide 73

Figure 10-1 DNS Status and Cache Web Page

PPP Configuration

The Point-to-Point Protocol (PPP) establishes a direct connection between two nodes. It defines a

method for data link connectivity between devices using physical layers (such as serial lines). The

EDS1100/2100 supports two types of PPP authentication: Password Authentication Protocol

(PAP) and Challenge Handshake Authentication Protocol (CHAP). Both of these authentication

methods require the configuration of a username and password.

PAP is an authentication protocol in PPP. It offers a straightforward method for the peer to

determine its identity. Upon the link establishment, the user ID and password are repeatedly sent

to the authenticator until it is acknowledged or the connection is terminated. However, PAP is not a

strong authentication process. There is no protection against trial-and-error attacks. The peer is

responsible for the frequency of the communication attempts.

CHAP is a more secure method than PAP. It works by sending a challenge message to the

connection requestor. Using a one-way hash function, the requestor responds with its value. If the

value matches the server’s own calculations, authentication is provided. Otherwise, the connection

is terminated.

Note: RFC1334 defines both CHAP and PAP.

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 156 157

Sin comentarios

Lantronix EDS1100 Guía de usuario Pagina 74