We are trying to get multiple VPN connections to an Azure virtual network. All VPN clients will be running Linux and are roaming and behind NATs (road warrior style). Strongswan isn't exactly supported and it seems only a site-to-site VPN will work using Microsoft's gateway. I ended up adding another VM that will just act as a dedicated VPN server running Strongswan. After setting up IPsec endpoints, I have been able to successfully connect multiple clients to the new virtual VPN server. I can ping from the clients to the VPN server and vice versa. I can't however, access the other virtual host which is on the same virtual network local subnet. I have a strong feeling that Azure is blocking the forwarding of traffic somehow. Has anyone else tried setting up a VPN server within Azure?
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