User shows us how to get FreeBSD connected to your CISCO 3700 router via TACACS+. Follow the link below for full instructions.

Tac-3700TACACS+ – (Terminal Access Controller Access Control System plus) — is a session protocol developed by Cisco.

Security(encryption) of the Protocol has improved. TACACS+ is a separately handles authentication, authorization, and accounting (AAA) services.

Used resources:

  1. FreeBSD 9.2 x64 (VM, IP: 10.0.0.10)
  2. GNS3 (Router 3700, IP: 10.0.0.100)
  3. Windows LoopBACK_Adapter (IP: 10.0.0.1)

Flow structure will be as follows:
FreeBSD x64 10.0.0.10 => LoopBACK Adapter (10.0.0.1) => GNS Cloud => Cisco Router 10.0.0.100

Full instructions: http://www.unixmen.com/freebsd-tacacs-gns3-and-cisco-3700-router/