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Community Member

Configure VPN with Modem router

Hi All,

How to configure modem/router so that all VPN traffic pass through it. there is no VPN option tab on the Modem/router. please see the files attached to help you.

Thanks in advance

Regards,

Rja

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Cisco Employee

Configure VPN with Modem router

If there is no access rules/firewall configured on the modem/router, the VPN traffic should pass through just fine.

Are you configuring any NATing on the modem/router? Also, is that site to site ipsec vpn?

Community Member

Configure VPN with Modem router

Hi Halim,

Thanks for your answer

The modem is beawan, there is a nat config inside the modem just to forward ssh port to the local network, yes site to site

Rgds,

rja

Cisco Employee

Configure VPN with Modem router

In that case, you would also need to configure port forward for the IPSec VPN traffic.

Do you know if NAT-T is enabled on the IPSec VPN tunnel? if yes, then you would need to port forward the following:

UDP/500 and UDP/4500

Otherwise, if your ipsec vpn is using other ports, you would need to port forward that accordingly.

If NAT-T is not enabled, then you would need to configure static NAT for your VPN server ip address.

Community Member

Configure VPN with Modem router

both router are 2821, NAT-T is not enable, I will try and go back to you

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