Is the OpenVPN server starting correctly? My server configuration file and the log from starting it up are below. I’m using TomatoUSB w/ OpenVPN, trying to follow a recipe from Jan Just Keijser’s book, OpenVPN Cookbook. Do this before connecting the VPN, and after. The expected behavior is then to see the public ip address of the OpenVPN server’s internet connection, instead of the 3G ip address. My MacBook connects via Wifi, then does the OpenVPN connection to the Pi. My iPhone can share its 3G connection and start a Wifi hotspot. Use some public Wifi service of connect over 3G. ![]() The final step: test your setup! Make sure you’re connected through some other network than the one the OpenVPN server is in. To set it server-side set this option in the server config: push "redirect-gateway def1" I’m using Viscosity and all I have to do is enable a setting to send all traffic over the VPN connection.Īlternative way: It’s also possible to configure the ‘Send all traffic over VPN connection’ on the server-side instead of the client. Just enter some DNS servers that work on the network of your OpenVPN server and that you are allowed to use. sudo vim /etc/openvpn/nfĪdd or edit these lines: push "dhcp-option DNS 8.8.8.8" Alternatively you can also push some local DNS servers or the DNS servers of your ISP. To solve this, configure the OpenVPN server to push public DNS servers to use. The DNS-servers you received via DHCP might not work because you access them from another network. ![]() When you connect to VPN and then send all traffic through the VPN, you are effectively using the network (and internet connection) of your VPN server and not the local network. When you connect to Wifi, you probably receive some DNS servers via DHCP. Most ISP’s restrict the usage of their DNS servers to their own network. When your router is not Linux, check the manual on howto add a static route. If it’s Linux, you’d run: sudo route add -net 10.8.0.0/24 gw 10.5.5.5Īssuming 10.5.5.5 is the ip address of the OpenVPN server. Short story: add this static route to your default gateway. If you omit this step, this traffic gets lost. Tell the default gw where to send traffic for OpenVPN clientsĪnother important step is to tell the default gateway in the home network (lighter green) where to send traffic for theOpenVPN clients. The change is now activated, and persistent. sudo vim /etc/nfĪdd this line, or alter it if it already exists: _forward = 1 Tell the default gw where to send traffic for OpenVPN clientsĪllow the OpenVPN server to route ip trafficįirst of all, you need to allow the OpenVPN server to route packets.Allow the OpenVPN server to route ip traffic.People on the red network now cannot see the sites you visit. ![]() This is how it looks like: you’re on a untrusted network (red) and create a safe VPN connection (green) and all traffic will flow over the green network, to the also trusted home network (lighter green). To help him solve the issue, I tested this myself, and decided to write a post showing how to do it because I really like the idea. In the comments on the previous post there was someone trying to set this up. Whatever you send over the wifi connection, is encrypted by the VPN and thus safe. The idea is to connect your laptop to your OpenVPN server (this is encrypted by default) and access the internet from there. You can do this by sending all traffic over the VPN connection, instead of only traffic for the remote servers. Another use case is to provide a secure connection when you’re not at home. One common feature is to access servers or services on the remote network. The Raspberry Pi can easily be setup as an OpenVPN server.
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