I would like to ask what the best method would be to configure my cisco 877 adsl router to have multiple firewalls installed in parallel behind the cisco 877 router. I have a multiple public IP's and I wish to assign a public ip to the cisco 877 router and each firewall behind the router. Each firewall is from a different vendor and is being used for testing purposes.
ISP Gateway IP >> Cisco 877 Public IP 1 >> FW1 Public IP 2 >> FW1 LAN IP Subnet 1
ISP Gateway IP >> Cisco 877 Public IP 1 >> FW2 Public IP 3 >> FW2 LAN IP Subnet 2
ISP Gateway IP >> Cisco 877 Public IP 1 >> FW3 Public IP 4 >> FW3 LAN IP Subnet 3
My aims are to:
Manage the 877 router from Network 1 only using secure protocols i.e. ssh and https
Nat performed by each firewall
Create a SSL/IPSEC VPN to each firewall for testing.
Many thanks for your help