![]() The phone is now member of the broadcast domain RemoteNet with all its resources so as it would be direct connected to it. Now you can connect to the access point ClientNet with your phone and get an ip address from the DHCP server on the RemoteNet far away. We do it by modifying its service with: rpi ~# systemctl edit the empty editor insert these statements, save them and quit the editor: ĮxecStartPre=/sbin/iw dev wlan0 set type _apĮxecStartPre=/bin/ip link set wlan0 master br0ĮxecStart=/sbin/wpa_supplicant -c/etc/wpa_supplicant/wpa_supplicant-%I.conf -Dnl80211,wext -i%I -bbr0ĮxecStopPost=-/bin/ip link set wlan0 nomasterĮxecStopPost=-/sbin/iw dev wlan0 set type managed Rpi ~# systemctl enable we have to tell wpa_supplicant to use a bridge. Rpi ~# chmod 600 /etc/wpa_supplicant/wpa_nf Rpi ~# cat > /etc/systemd/network/dev /etc/systemd/network/work /etc/systemd/network/16-br0_up.network /etc/wpa_supplicant/wpa_nf <<EOFĬtrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev ♦ Bridge client access point to the VPN tunnelĬreate these files to setup the bridge: rpi ~$ sudo -Es Then do ♦ General Setup and create this file to configure openvpn: rpi ~# cat > /etc/openvpn/nf 1194 udpĬreate these files to configure the interfaces: rpi ~# cat > /etc/systemd/network/work /etc/systemd/network/work /etc/wpa_supplicant/wpa_nf mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 100 # check if openvpn is reachable on its default UDP port 1194Ĭonnection to 1194 port succeeded! ♦ Set up the VPN-serverĭo ♦ General Setup then create this file to configure openvpn: rpi ~# cat > /etc/openvpn/nf /etc/systemd/network/dev /etc/systemd/network/work /etc/systemd/network/12-br0_work /etc/systemd/network/16-br0_up.network /etc/wpa_supplicant/wpa_nf (e.g. You should have setup it before starting.įor reference I use Raspbian Stretch Lite, updated with sudo apt update & sudo apt full-upgrade & sudo reboot on. ![]() ![]() Configuring it, for example with DynDNS, port forwarding and routing is out of scope here. You need a connection from the RasPi to the VPN-server. This is much more complicated and not an issue here 2. in an enterprise environment, you have to setup a PKI (public key infrastructure) with a master Certificate Authority (CA) to be used for a client/server VPN tunnel (mode server). But if you need more clients to connect to the VPN-server, e.g. If you need a second one you can setup a second instance of the VPN-server (maybe a third one?). This simplyfies the setup a lot but you can only connect one client to the VPN-server. It uses a peer to peer VPN tunnel (mode p2p) with static preshared encryption keys. This example is made for Raspberry Pi to be used in a home environment to be as simple as possible. To show the setup of the VPN-server I will use a RPi 3B so you can take it as template for setting up your own VPN-server based on an other hardware. For this example I will use systemd-networkd because it has everything built-in and we do not need additional programs. ![]() It only needs a connection to the VPN-server and interfaces that can be added to a bridge as slaves. The advantage of openvpn is that it is independent from the underlaying network setup, no matter if you use dhcpcd, /etc/network/interfaces or systemd-networkd. Phone |(wlan0)│ ╲ wifi ╱ wan │ │ wan ╱ server|(wlan0)│ DHCP. Wifi │ br0│RPi(wlan1) router │ INTERNET │ router (eth0)VPN- │ br0│ wifi Example for this setup: bridge ┌──────────┐ bridge
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