OT: Crypto problem on Cisco 2911 series router

Hello All,

Sorry for the OT. I have a cisco 2911 series router with an ipbasek9
universal image. I want to configure crypto ipsec vpn on the router, but I
obviously cannot probably because of licensing issue. How am I support to go
about getting the license for security. How will I install it on the router,
or do I need to download and install a security ios entirely.

Thanks

-- 
Olumayokun Fowowe
Blogs and organic groups at http://www.ccie.net