Comparison of RADIUS and TACACS+

Protocol and PortsCisco:
UDP Port 1645 (Authentication/Authorisation)
UDP Port 1646
Industry Standard:
UDP Port 1812 (Authentication/Authorisation)
UDP Port 1813
TCP Port 49
EncryptionEncrypts the password field
Supports EAP for 802.1x authentication
Encrypts entire payload
Does not support EAP
Authentication and AuthorisationCombines authentication and authorisation
Cannot be used to authorise individual CLI commands
Separates authentication and authorisation
Can be used for individual CLI command authorisation
AccountingDoes not support network device CLI accountingSupport network device CLI command accounting
Primary UseSecure Network AccessNetwork Device Access Control
Comparison of RADIUS and TACACS+



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