openvpn — OpenVPN client and daemon binary. More information: <https://openvpn.net/community-docs/community-ar

Connect to server using a configuration file

sudo openvpn {{path/to/client.conf}}

Try to set up an insecure peer-to-peer tunnel on bob.example.com host

sudo openvpn --remote {{alice.example.com}} --dev {{tun1}} --ifconfig {{10.4.0.1}} {{10.4.0.2}}

Connect to the awaiting bob.example.com host without encryption

sudo openvpn --remote {{bob.example.com}} --dev {{tun1}} --ifconfig {{10.4.0.2}} {{10.4.0.1}}

Create a cryptographic key and save it to file

openvpn --genkey secret {{path/to/key}}

Try to set up a peer-to-peer tunnel on bob.example.com host with a static key

sudo openvpn --remote {{alice.example.com}} --dev {{tun1}} --ifconfig {{10.4.0.1}} {{10.4.0.2}} --secret {{path/to/key}}