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101 lines
2.8 KiB
ReStructuredText
==========================
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Virtual Private Networking
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==========================
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A virtual private network secures public network connections and in doing so it
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extends the private network into the public network such as internet. With a VPN
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you can create large secure networks that can act as one private network.
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.. image:: images/Virtual_Private_Network_overview.png
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:width: 100%
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(picture from `wikipedia <https://en.wikipedia.org/wiki/File:Virtual_Private_Network_overview.svg>`__)
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Companies use this technology for connecting branch offices and remote users
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(road warriors).
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OPNsense supports VPN connections for branch offices as well as remote users.
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Creating a single secured private network with multiple branch offices connecting
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to a single site can easily be setup from within the graphical user interface.
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For remote users, certificates can be created and revoked and a simple to use export
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utility makes the client configuration a breeze.
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--------------------------
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Supported VPN technologies
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--------------------------
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OPNsense offers a wide range of VPN technologies ranging from modern SSL VPN's to
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well known IPsec as well as older (now considered insecure) legacy options such as
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L2TP and PPTP.
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.. image:: images/vpn.png
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.. Note::
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VPN technologies displayed with an open lock are considered to be insecure.
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Integrated VPN options
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----------------------
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Integrated solutions are those that are available within the GUI without installing
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any additional package or plugin. These include:
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* **IPsec**
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* **OpenVPN (SSL VPN)**
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Plugin VPN options
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------------------
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Via plugins additional VPN technologies are offered, including:
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* **Legacy L2TP & PPTP**
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* **OpenConnect** - SSLVPN client, initially build to connect to commercial vendor appliances like Cisco ASA or Juniper.
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* **Tinc** - Automatic Full Mesh Routing
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* **WireGuard** - Very simple and fast VPN wokring with public and private keys.
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* **Zerotier** - seamlessly connect everything, requires account from zerotier.com, free for up to 100 devices.
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-------------
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Configuration
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-------------
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Please read our how-to's for configuration examples and more detailed information.
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IPsec Road Warrior
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-------------------
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:doc:`how-tos/ipsec-road`
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IPsec Site-to-Site
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-----------------------
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:doc:`how-tos/ipsec-s2s`
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IPsec Site-to-Site with BINAT
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-----------------------------
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:doc:`how-tos/ipsec-s2s-binat`
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OpenVPN/SSL Road Warrior
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------------------------
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:doc:`how-tos/sslvpn_client`
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OpenVPN/SSL Site-to-Site
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------------------------
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:doc:`how-tos/sslvpn_s2s`
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OpenConnect Client
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------------------
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:doc:`how-tos/openconnect`
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WireGuard Site-to-Site
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----------------------------
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:doc:`how-tos/wireguard-s2s`
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WireGuard Road Warrior
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----------------------
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:doc:`how-tos/wireguard-client`
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:doc:`how-tos/wireguard-client-azire`
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:doc:`how-tos/wireguard-client-mullvad`
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Zerotier
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--------
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:doc:`how-tos/zerotier`
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