Your best bet would be to use two PIX-506 firewalls with code 5.1 or higher. They will provide security to both sites and IPSEC encryption from one site to another. As to use 1605R, you might need to research for the right IOS which supports IPSEC encryption.
Yes, this is possible. You will specify the the "interesting traffic" that will be encrypted between your Site-to-Site VPN with an IOS access-list. All other traffic that does match the access-list/crypto map will be routed normally to the internet in clear text (Not Encrypted) Check out the CCO page for sample configurations which may be a help to start with.
Hope you have been succesful. My first thought was that you would need static IP addresses for both sites and a QoS for the network if you wanted to create a VPN between two cable loops and run applications between the sites.
I have utilized 1605 series routers to channel traffic over an IP gateway and over a WAN. Same pipe different routes. Configured by trusty engineers they do allow traffic to be differentiated. They still need to know where they are and who they are by static IP address though.
DocumentationCode download linksGoalRequirementLimitationsSupported ISR and UCS-E ModelSupported ISRG2 and UCS-E Blades:Supported ISR4K and UCS-E Blades:Step by Step ConfigurationConfigure one of the connectivity options to access the Cisco IMC from the n...
Firepower Threat Defense (NGFWv) on UCS E-series - Transparent Mode in HA
DocumentationCode download linksGoalRequirementLimitationsSupported ISR and UCS-E ModelSupported ISRG2 and UCS-E Blades:Supported ISR4K and UCS-E Blades:Step by Step ConfigurationCo...
I am currently unable to specify "crypto keyring" command when configuring VPN connection on my cisco 2901 router.
The following licenses have been activated on my router :