client side LAN,multiple user access howto

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network786
OpenVpn Newbie
Posts: 2
Joined: Mon Oct 10, 2011 6:02 am

client side LAN,multiple user access howto

Post by network786 » Mon Oct 10, 2011 6:34 am

Assume that we have openvpnAS having public ip and fully configured.
Now client install on pc having windowXP which have two lan cards.one LAN brings internet AND another LAN connect to voip gateway.how voip gateway can access openvpnAS subnets.

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openvpn_inc
OpenVPN Inc.
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Joined: Tue Feb 16, 2021 10:41 am

Re: client side LAN,multiple user access howto

Post by openvpn_inc » Tue Jul 19, 2022 11:50 am

Hello network786,

On the client side you need an OpenVPN client that receives instructions from the server on how to route the additional subnet on the second network card. It must be able of doing packet forwarding and serve as a router between the second network card and the VPN interface. Windows XP is ancient and unsupported. Technically it could do packet forwarding and the necessary routing to serve as a router to connect things together, but this has to be done with registry hacks. In other words, this solution would be terrible, outdated, unpredictable, and completely unsupported.

I doubt you'll find anyone that is willing to support this in any way. Beyond this message I probably will not go further in supporting or working out this use-case with Windows XP either, sorry.

On Access Server to support a client-side network, you can go to User Permissions and specify under VPN client gateway the subnet that's on the second network card. This user, when connected, will then be known to have that network and traffic for that subnet will be routed to that VPN client. That VPN client is then responsible for dealing with this traffic, which requires packet forwarding and routing. And that subnet has to route packets properly as well.

We recommend a Linux based VPN client system to deal with this. This can be a router running pfsense for example.

Here is more information on site-to-site routing with Access Server and a Linux VP client system;
https://openvpn.net/vpn-server-resource ... in-detail/

Kind regards,
Johan
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