Port-based authentication is a form of "security by obscurity" wherein any device connecting to a system via the selected port is assumed to have authority to access said system. This can be dangerous if the port is randomly guessed, or shared by an someone who has previously been authorized. In this way, port-based authentication is equivalent to using a weak (or even default) password.
RADIUS requires port-based authentication.
Yes, RADIUS requires port-based authentication.
No
The most common form of authentication is the password based authentication
Authentication !) form based Authentication 2) Windows " " 3) Passport "
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two-factore authentication
An ID card portrays authentication based upon something the user has.
RADIUS server
Three common ways to authenticate someone are: Knowledge-based authentication: This involves something the user knows, such as a password or PIN. Possession-based authentication: This requires something the user has, like a security token, smart card, or mobile device for SMS verification. Biometric authentication: This uses unique biological traits, such as fingerprints, facial recognition, or iris scans, to verify a person's identity.
Authentication is based upon either:Something you know (such as a PIN).Something you have (such as an ID card).Something you are (such as a fingerprint, retina scan or DNA sample).Preferably, authentication will combine two or more of the three.
Open authentication requires a password. Pre-shared keys do not require a password.