... 802.11n performance, Cisco 2500 series wireless controller is an entry-level controller that provides real-time communication between Cisco Aironet ... As a component of the Cisco unified wireless network, this controller delivers centralized security policies, wireless intrusion prevention system (wIPS) ... DES, Triple DES, RSA, RC4, MD5, 128-bit WEP, 40-bit WEP, IKE, SSL, TLS, SHA-1, TLS 1.0 ...