CiscoSecure ACS supports many features for the TACACS+ AAA server. ARA RADIUS is supported by TACACS+. CiscoSecure ACS supports the many features for RADIUS AAA server, including IETF RADIUS and Cisco's RADIUS AV-pair. Cisco uses a single TACACS+/RADIUS database for simultaneous support. Vendors of AAA systems may also support virtual private networks and virtual private dial-up networks. |