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What is the difference between the two protocols TACACS and RADIUS+ ?

RADIUS Security Protocols CCNA CCNP TACACS+
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Question added by Deleted user
Date Posted: 2014/12/23
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Sreejith Kovilagam Sreedharan
by Sreejith Kovilagam Sreedharan , Phone Banking Officer , citibank.n.a

  • RADIUS uses UDP
  • TACACS+ use TCP
  • RADIUS encrypts only the password during transmission
  • TACACS+ encrypts the entire session
  • RADIUS combines authentication (device) and Authorization(User).
  • TACACS+ Separates Authentication, Authorization, and Accountability
  • RADIUS is limited in its privilege mode
  • TACACS+ supports15 privilege modes. In addition, you can limit router commands based on user groups.
  • RADIUS is an open standard and therefore more interoperable than TACACS+
  • TACACS+ is proprietary to cisco
  • RADIUS uses less memory and CPU cycles on your routers
  • TACACS+ is heavier than RADIUS

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