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RADIUS is a client/server protocol that runs in the application layer, and can use either TCP or UDP. Network access servers, which control access to a network, usually contain a RADIUS client component that communicates with the RADIUS server. [1] RADIUS is often the back-end of choice for 802.1X authentication. [2]
There are a number of differences between the two protocols which make them substantially different in normal usage. TACACS+ can only use TCP, while RADIUS normally operates over UDP, [7] but can also use TCP (RFC6613), and for additional security, TLS (RFC 6614) and DTLS (RFC7360). TACACS+ can operate in two modes.
Virtual private network (VPN) is a network architecture for virtually extending a private network (i.e. any computer network which is not the public Internet) across one or multiple other networks which are either untrusted (as they are not controlled by the entity aiming to implement the VPN) or need to be isolated (thus making the lower network invisible or not directly usable).
The interface between AN and AN-AAA is known as the A12 interface. Broker AAA (B-AAA): Acts as an intermediary to proxy AAA traffic between roaming partner networks (i.e., between the H-AAA server in the home network and V-AAA server in the serving network). B-AAA servers are used in CRX networks to enable CRX providers to offer billing ...
PRIVATE WiFi is a virtual private network (VPN) security software that protects your identity and sensitive information by encrypting everything you send and receive over public WiFi networks so that your online activity is invisible to threats.
A VPN does not make one's Internet use private. Users can still be tracked through tracking cookies and device fingerprinting, even if the user's IP address is hidden. [15] A VPN can log the user's traffic, although this depends on the VPN provider. [15] A VPN does not make the user immune to cyberattacks. [15]
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