Is AnyConnect supported on Cisco IOS® devices?
A. Yes. As of Cisco IOS Software Release 12.4(15)T in browser-initiated mode only as per the Release 12.4T New Security Features Notes. As of Cisco IOS Software Release 12.4(20)T, standalone mode is also supported. For more information, refer to SSL VPN Remote User Guide. Note: • The low latency DTLS protocol is not supported by IOS at this time, so it is an SSL only TLS connection (like SVC). • Client keepalives are not supported on IOS devices until the 12.4(20)T release. • Updates to the hardware crypto that can cause disconnects have been resolved with 12.4(T2) for 87x platforms. • Start Before Logon is currently not supported by IOS.