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INSTALLATION
Method 2: the easiest way is via ELRepo's pre-built module: $ sudo yum install elrepo-release epel-release $ sudo yum install kmod-wireguard wireguard-tools. Method 3: users running non-standard kernels may wish to use the DKMS package instead: $ sudo yum install epel-release $ sudo yum config-manager --set-enabled PowerTools $ sudo yum coprQUICK START
WIREGUARD FOR WINDOWS DOWNLOADS WireGuard Installer. This utility simply downloads, verifies, and executes one of the below MSIs: wireguard-installer.exe; WireGuard MSIs. wireguard-amd64-0.3.14.msi PROTOCOL & CRYPTOGRAPHYREPOSITORIES
WireGuard is divided into several sub-projects and repositories. The following is a list of official and supported WireGuard projects, along with their status and maintainer. Most repositories are hosted on git.zx2c4.com using free software, though some are hosted EMBEDDING INTO APPLICATIONS Embedding WireGuard in Custom Applications. The WireGuard Project's client applications have been designed with maximum reusability in mind, such that it is possible to create custom applications that use WireGuard. The story is slightly different on different platforms, and this page attempts to summarize what the project has available. COMPILATION FROM SOURCE CODE When building as an out of tree module, it is probable that one needs CONFIG_UNUSED_SYMBOLS set as well.. Building Directly In Tree. Rather than building as an external module, if you would like to build WireGuard as a module or as built-in, directly from within the kernel tree, you may use the create-patch.sh script which creates a patch for adding WireGuard directly to the tree or the juryFORMAL VERIFICATION
The WireGuard protocol, described in the technical paper, and based on Noise, has been formally verified in the symbolic model using Tamarin. This means that there is a security proof of the WireGuard protocol. The protocol has been verified to possess the following security properties: Correctness. Strong key agreement & authenticity. PRESENTED BY JASON A. DONENFELD Cryptokey Routing The fundamental concept of any VPN is an association between public keys of peers and the IP addresses that those peers are allowed to use. A WireGuard interface has: A private key WIREGUARD: FAST, MODERN, SECURE VPN TUNNELINSTALLATIONQUICK STARTINTERWORKINGSWHITEPAPERDONATEPROTOCOL & CRYPTOGRAPHY WireGuard ® is an extremely simple yet fast and modern VPN that utilizes state-of-the-art cryptography.It aims to be faster, simpler, leaner, and more useful than IPsec, while avoiding the massive headache.It intends to be considerably more performant than OpenVPN. WireGuard is designed as a general purpose VPN for running on embedded interfaces and super computers alike, fit for manyINSTALLATION
Method 2: the easiest way is via ELRepo's pre-built module: $ sudo yum install elrepo-release epel-release $ sudo yum install kmod-wireguard wireguard-tools. Method 3: users running non-standard kernels may wish to use the DKMS package instead: $ sudo yum install epel-release $ sudo yum config-manager --set-enabled PowerTools $ sudo yum coprQUICK START
WIREGUARD FOR WINDOWS DOWNLOADS WireGuard Installer. This utility simply downloads, verifies, and executes one of the below MSIs: wireguard-installer.exe; WireGuard MSIs. wireguard-amd64-0.3.14.msi PROTOCOL & CRYPTOGRAPHYREPOSITORIES
WireGuard is divided into several sub-projects and repositories. The following is a list of official and supported WireGuard projects, along with their status and maintainer. Most repositories are hosted on git.zx2c4.com using free software, though some are hosted EMBEDDING INTO APPLICATIONS Embedding WireGuard in Custom Applications. The WireGuard Project's client applications have been designed with maximum reusability in mind, such that it is possible to create custom applications that use WireGuard. The story is slightly different on different platforms, and this page attempts to summarize what the project has available. COMPILATION FROM SOURCE CODE When building as an out of tree module, it is probable that one needs CONFIG_UNUSED_SYMBOLS set as well.. Building Directly In Tree. Rather than building as an external module, if you would like to build WireGuard as a module or as built-in, directly from within the kernel tree, you may use the create-patch.sh script which creates a patch for adding WireGuard directly to the tree or the juryFORMAL VERIFICATION
The WireGuard protocol, described in the technical paper, and based on Noise, has been formally verified in the symbolic model using Tamarin. This means that there is a security proof of the WireGuard protocol. The protocol has been verified to possess the following security properties: Correctness. Strong key agreement & authenticity. PRESENTED BY JASON A. DONENFELD Cryptokey Routing The fundamental concept of any VPN is an association between public keys of peers and the IP addresses that those peers are allowed to use. A WireGuard interface has: A private key COMPILATION FROM SOURCE CODE When building as an out of tree module, it is probable that one needs CONFIG_UNUSED_SYMBOLS set as well.. Building Directly In Tree. Rather than building as an external module, if you would like to build WireGuard as a module or as built-in, directly from within the kernel tree, you may use the create-patch.sh script which creates a patch for adding WireGuard directly to the tree or the jury ROUTING & NETWORK NAMESPACES Routing & Network Namespace Integration. Like all Linux network interfaces, WireGuard integrates into the network namespace infrastructure. This means an administrator can have several entirely different networking subsystems and choose which interfaces live ineach.
PERFORMANCE
Testing Helpers. See debug.mk for easy testing deployment tricks via make remote-run, as well as netns.sh via make test and make remote-test for local and remote testing in network namespaces. The contrib/ directory also has various scripts and wrappers for easing testing.. Performance Roadmap. In theory WireGuard should achieve very high performance. There are still a few things to be doneBUILD STATUS
Build Status. For the various trees below, a fresh build and run for several different architectures and versions, for each new commit to the repository. A fresh kernel is built with a minimal config, along with a minimal initramfs, containing a custom init and the network namespace test suite, which is all run inside of QEMU/KVM. PRESENTED BY JASON A. DONENFELD Cryptokey Routing The fundamental concept of any VPN is an association between public keys of peers and the IP addresses that those peers are allowed to use. A WireGuard interface has: A private key A listeningUDP port
PRESENTED BY JASON A. DONENFELD Case study: security/keys/big_key.c Stores key in memory, encrypted data on disk. Gives plain-text back to user if user has access to key.(See keyctl(1).)
PRESENTED BY JASON A. DONENFELD Simplicity of Interface The interface appears stateless to the system administrator. Add an interface –wg0, wg1, wg2, –configure itspeers, and
WIREGUARD LINUX KERNEL INTEGRATION TECHNIQUES WireGuard Linux Kernel Integration Techniques Netdev 2.2 — Seoul, Korea — November, 2017 www.wireguard.com Jason A. Donenfeldjason@zx2c4.com
PRESENTED BY JASON A. DONENFELD Easily Auditable OpenVPN Linux XFRM StrongSwan SoftEther WireGuard 116,730 LoC Plus OpenSSL! 13,898 LoC Plus StrongSwan! 405,894 LoC Plus XFRM! 329,853 LoC 3,904 LoC Less is more. PRESENTED BY JASON A. DONENFELD Presented by Jason A. Donenfeld June 15, 2018 Symposium sur la sécurité des technologies de l'information et des communicationsRennes, France
Toggle navigation WireGuard* Installation
* Quick Start
* Interworkings
* Compilation from Source Code * Protocol & Cryptography * Formal Verification * Cross-platform Interface * Routing & Network Namespaces* Benchmarks
* Build Status
* Project Todo
* Presentations
* __ Whitepaper
* __ Donate
* __
* Conceptual Overview * Simple Network Interface* Cryptokey Routing
* Built-in Roaming
* Ready for Containers* Learning More
* About The Project
* Source Code
* Work in Progress
* License
------------------------- WireGuard® is an extremely simple yet fast and modern VPN that utilizes STATE-OF-THE-ART CRYPTOGRAPHY . It aims to be faster , simpler , leaner, and more useful than IPsec, while avoiding the massive headache. It intends to be considerably more performant than OpenVPN. WireGuard is designed as a general purpose VPN for running on embedded interfaces and super computers alike, fit for many different circumstances. Initially released for the Linux kernel, it is now cross-platform (Windows, macOS, BSD, iOS, Android) and widely deployable. It is currently under heavy development, but already it might be regarded as the most secure, easiest to use, and simplest VPN solution in the industry. __ SIMPLE & EASY-TO-USE WireGuard aims to be as easy to configure and deploy as SSH. A VPN connection is made simply by exchanging very simple public keys – exactly like exchanging SSH keys – and all the rest is transparently handled by WireGuard. It is even capable of roaming between IP addresses, just like Mosh . There is no need to manage connections, be concerned about state, manage daemons, or worry about what's under the hood. WireGuard presents an extremely basic yetpowerful interface.
__ CRYPTOGRAPHICALLY SOUND WireGuard uses state-of-the-art cryptography, like the Noise protocol framework , Curve25519, ChaCha20 ,
Poly1305 , BLAKE2 ,
SipHash24 , HKDF
, and secure trusted constructions. It makes conservative and reasonable choices and has been reviewed bycryptographers.
__ MINIMAL ATTACK SURFACE WireGuard has been designed with ease-of-implementation and simplicity in mind. It is meant to be easily implemented in very few lines of code, and easily auditable for security vulnerabilities. Compared to behemoths like *Swan/IPsec or OpenVPN/OpenSSL, in which auditing the gigantic codebases is an overwhelming task even for large teams of security experts, WireGuard is meant to be comprehensively reviewable by single individuals.__ HIGH PERFORMANCE
A combination of extremely high-speed cryptographic primitives and the fact that WireGuard lives inside the Linux kernel means that secure networking can be very high-speed. It is suitable for both small embedded devices like smartphones and fully loaded backbonerouters.
__ WELL DEFINED & THOROUGHLY CONSIDERED WireGuard is the result of a lengthy and thoroughly considered academic process, resulting in the technical whitepaper , an academic research paper which clearly defines the protocol and the intense considerations that went intoeach decision.
CONCEPTUAL OVERVIEW
If you'd like a general conceptual overview of what WireGuard is about, read onward here. You then may progress to installation and reading the quickstart instructions onhow to use it.
If you're interested in the internal inner workings, you might be interested in the brief summary of the protocol , or go more in depth by reading the technical whitepaper , which goes into more detail on the protocol, cryptography, and fundamentals. If you intend to implement WireGuard for a new platform, please read the cross-platform notes.
WireGuard securely encapsulates IP packets over UDP. You add a WireGuard interface, configure it with your private key and your peers' public keys, and then you send packets across it. All issues of key distribution and pushed configurations are _out of scope_ of WireGuard; these are issues much better left for other layers, lest we end up with the bloat of IKE or OpenVPN. In contrast, it more mimics the model of SSH and Mosh; both parties have each other's public keys, and then they're simply able to begin exchanging packets through theinterface.
SIMPLE NETWORK INTERFACE WireGuard works by adding a network interface (or multiple), like eth0 or wlan0, called wg0 (or wg1, wg2, wg3, etc). This network interface can then be configured normally using ifconfig(8) or ip-address(8), with routes for it added and removed using route(8) or ip-route(8), and so on with all the ordinary networking utilities. The specific WireGuard aspects of the interface are configured using the wg(8)tool. This
interface acts as a tunnel interface. WireGuard associates tunnel IP addresses with public keys and remote endpoints. When the interface sends a packet to a peer, it does thefollowing:
* This packet is meant for 192.168.30.8. Which peer is that? Let me look... Okay, it's for peer ABCDEFGH. (Or if it's not for any configured peer, drop the packet.) * Encrypt entire IP packet using peer ABCDEFGH's public key. * What is the remote endpoint of peer ABCDEFGH? Let me look... Okay, the endpoint is UDP port 53133 on host 216.58.211.110. * Send encrypted bytes from step 2 over the Internet to 216.58.211.110:53133 using UDP. When the interface receives a packet, this happens: * I just got a packet from UDP port 7361 on host 98.139.183.24.Let's decrypt it!
* It decrypted and authenticated properly for peer LMNOPQRS. Okay, let's remember that peer LMNOPQRS's most recent Internet endpoint is 98.139.183.24:7361 using UDP. * Once decrypted, the plain-text packet is from 192.168.43.89. Is peer LMNOPQRS allowed to be sending us packets as 192.168.43.89? * If so, accept the packet on the interface. If not, drop it. Behind the scenes there is much happening to provide proper privacy, authenticity, and perfect forward secrecy, using state-of-the-artcryptography.
CRYPTOKEY ROUTING
At the heart of WireGuard is a concept called _Cryptokey Routing_, which works by associating public keys with a list of tunnel IP addresses that are allowed inside the tunnel. Each network interface has a private key and a list of peers. Each peer has a public key. Public keys are short and simple, and are used by peers to authenticate each other. They can be passed around for use in configuration files by any out-of-band method, similar to how one might send their SSH public key to a friend for access to a shellserver.
For example, a server computer might have this configuration: PrivateKey = yAnz5TF+lXXJte14tji3zlMNq+hd2rYUIgJBgB3fBmk= ListenPort = 51820 PublicKey = xTIBA5rboUvnH4htodjb6e697QjLERt1NAB4mZqp8Dg= AllowedIPs = 10.192.122.3/32, 10.192.124.1/24 PublicKey = TrMvSoP4jYQlY6RIzBgbssQqY3vxI2Pi+y71lOWWXX0= AllowedIPs = 10.192.122.4/32, 192.168.0.0/16 PublicKey = gN65BkIKy1eCE9pP1wdc8ROUtkHLF2PfAqYdyYBz6EA= AllowedIPs = 10.10.10.230/32 And a client computer might have this simpler configuration: PrivateKey = gI6EdUSYvn8ugXOt8QQD6Yc+JyiZxIhp3GInSWRfWGE= ListenPort = 21841 PublicKey = HIgo9xNzJMWLKASShiTqIybxZ0U3wGLiUeJ1PKf8ykw= Endpoint = 192.95.5.69:51820 AllowedIPs = 0.0.0.0/0 In the server configuration, each peer (a client) will be able to send packets to the network interface with a source IP matching his corresponding list of allowed IPs. For example, when a packet is received by the server from peer gN65BkIK..., after being decrypted and authenticated, if its source IP is 10.10.10.230, then it's allowed onto the interface; otherwise it's dropped. In the server configuration, when the network interface wants to send a packet to a peer (a client), it looks at that packet's destination IP and compares it to each peer's list of allowed IPs to see which peer to send it to. For example, if the network interface is asked to send a packet with a destination IP of 10.10.10.230, it will encrypt it using the public key of peer gN65BkIK..., and then send it to that peer's most recent Internet endpoint. In the client configuration, its single peer (the server) will be able to send packets to the network interface with _any_ source IP (since 0.0.0.0/0 is a wildcard). For example, when a packet is received from peer HIgo9xNz..., if it decrypts and authenticates correctly, with any source IP, then it's allowed onto the interface; otherwise it'sdropped.
In the client configuration, when the network interface wants to send a packet to its single peer (the server), it will encrypt packets for the single peer with _any_ destination IP address (since 0.0.0.0/0 is a wildcard). For example, if the network interface is asked to send a packet with any destination IP, it will encrypt it using the public key of the single peer HIgo9xNz..., and then send it to the single peer's most recent Internet endpoint. In other words, when sending packets, the list of allowed IPs behaves as a sort of routing table, and when receiving packets, the list of allowed IPs behaves as a sort of access control list. This is what we call a _Cryptokey Routing Table_: the simple association of public keys and allowed IPs. Any combination of IPv4 and IPv6 can be used, for any of the fields. WireGuard is fully capable of encapsulating one inside the other ifnecessary.
Because all packets sent on the WireGuard interface are encrypted and authenticated, and because there is such a tight coupling between the identity of a peer and the allowed IP address of a peer, system administrators do not need complicated firewall extensions, such as in the case of IPsec, but rather they can simply match on "is it from this IP? on this interface?", and be assured that it is a secure and authentic packet. This greatly simplifies network management and access control, and provides a great deal more assurance that your iptables rules are actually doing what you intended for them to do.BUILT-IN ROAMING
The client configuration contains an _initial_ endpoint of its single peer (the server), so that it knows where to send encrypted data before it has received encrypted data. The server configuration doesn't have any initial endpoints of its peers (the clients). This is because the server discovers the endpoint of its peers by examining from where correctly authenticated data originates. If the server itself changes its own endpoint, and sends data to the clients, the clients will discover the new server endpoint and update the configuration just the same. Both client and server send encrypted data to the most recent IP endpoint for which they authentically decrypted data. Thus, there is full IP roaming on both ends. READY FOR CONTAINERS WireGuard sends and receives encrypted packets using the network namespace in which the WireGuard interface was originally created . This means that you can create the WireGuard interface in your main network namespace, which has access to the Internet, and then move it into a network namespace belonging to a Docker container as that container's _only_ interface. This ensures that the only possible way that container is able to access the network is through a secure encrypted WireGuard tunnel.LEARNING MORE
Consider glancing at the commands & quick start for a good idea of how WireGuard is used in practice. There is also a description of the protocol, cryptography, & key exchange , in addition to the technical whitepaper , which provides the most detail.ABOUT THE PROJECT
SOURCE CODE
WireGuard is divided into several repositories hosted in the ZX2C4 Git Repository and elsewhere. Consult the projectrepository list .
IRC DISCUSSIONS
If you're having trouble setting up WireGuard or using it, the best place to get help is the #wireguard IRC channel on Freenode . We also discuss development tasks there and plan the future of the project.MAILING LIST
Get involved in the WireGuard development discussion by joining themailing list .
This is where all development activities occur. Submit patches using git-send-email, similar to the style of LKML.EMAIL CONTACT
If you'd like to contact us privately for a particular reason, you may reach us at team@wireguard.com. Keep in mind, though, that "support" requests are much better suited for our IRC channel on Freenode.SECURITY CONTACT
Please report any security issues to security@wireguard.com. You may encrypt your security-related emails using GPG key 20A749FC7012A5DE03AE.
Do not send non-security-related issues to this email alias.WORK IN PROGRESS
Some parts of WireGuard are working toward a stable 1.0 release, while others are already there. Current snapshots are generally versioned "0.0.YYYYMMDD" or "0.0.V", but these should not be considered real releases and they may contain security quirks (which would _not_ be eligible for CVEs, since this is pre-release snapshot software). Current releases are generally versioned "1.x.YYYYMMDD".LICENSE
The kernel components are released under the GPLv2, as is the Linux kernel itself. Other projects are licensed under MIT, BSD, Apache 2.0, or GPL, depending on context. © Copyright 2015-2019 Jason A. Donenfeld. All Rights Reserved. "WireGuard" and the "WireGuard" logo are registered trademarks of Jason A. Donenfeld. This project is from ZX2C4 and from Edge Security , a firm devoted to information security research expertise.Details
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