Sunday, 3 April 2011


Comparison of RADIUS and TACACS+

Hi guys quick comparison between TACACS and RADIUS is as under

Developer Originally developed by Livingston (now industry standard) Cisco proprietary
Transport Protocol UDP port 1645/1646 and as per RFC 2138; 1812/1813

TCP port 49
AAA Support Combines the authentication and authorization packet and separates the accounting packets

Uses the AAA architecture and separates the three services of AAA
Challenge Response Unidirectional—Single challenge response Bidirectional—Multiple challenge responses

Protocol Support No NetBEUI Full support
Security Encrypts only the password in the packet Encrypts entire packet

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