Cisco 877 as VPN server behind DSL-modem

[Lorenzo Moro]

Hi everybody,

I'd like to configure a Cisco 877 to work as a VPN server for both Windows and iOS native VPN clients. The Cisco 877 isn't used as a gateway, as the network gateway is another DSL router provided by the ISP. The Cisco 877 should assign to VPN clients an IP address belonging to its same subnet (192.168.1.0). The current configuration is attached.

Can anybody help me? Thank you in advance.

[Georg Pauwen]

Hello,

I guess the easy solution would be to put your DSL modem/router in bridge mode, so that the 877 becomes the VPN edge. Is that an option ?

[Lorenzo Moro]

Hi Georg,

unfortunately that is not an option, as the ISP provides VoIP service only through the DSL modem, and putting it into bridge mode would deactivate the VoIP service.