> For the complete documentation index, see [llms.txt](https://zeferby.gitbook.io/transparent-openvpn-for-fantasy-grounds/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zeferby.gitbook.io/transparent-openvpn-for-fantasy-grounds/simultaneous-games-fgc-1-vpn-server/untitled-1.md).

# VPNs for both FGC + FGU (LAN mode)

Since **FGU-LAN mode** networking is mostly the **same as FGC** networking with the **UDP/TCP** transport as **only difference**, we are able to support either or both in our extended "N-at-a-time" setup.

With our current OpenVPN setup (with a "/24" subnet), **we can manage up to approximately 60 certificates/connections**.

### **For each GM certificate/connection**

***including the initially created single/time-shared one (my-fg-ovpn-dm01)***

We'll :

* **reserve 1 VPN private IP address** *(our initial "my-fg-ovpn-dm01" connection has the ".6" private IP in the VPN subnet, so : 10.10.10.6 in our example)*
* **choose to support** (= implement transparent port forwarding for) :
  * *only* FGC (on a TCP port) : *like we we did previously for my-fg-ovpn-dm01*
  * *only* FGU-LAN mode (on a UDP port)
  * *both* FGC (on a TCP port) *and* FGU-LAN mode (on a UDP port)

{% hint style="danger" %}
...to be continued...
{% endhint %}