I need to encrypt a dedicated serial link between two Cisco routers (1760 & 2811) both capable of doing VPN, tunneling, etc.
I'm not sure where to start because I'd like to configure fast encryption method that doesn't eat the BW and keep the latencies low.
What would you suggest?... tunneling? VPN with fast algorythms?... any ideas (and links to case studies or configuration guides) are welcome.