OpenVPN ships with a set of scripts called Easy-RSA that can generate the appropriate files needed for an OpenVPN setup using X.509 certificates. The scripts can be a little obtuse at times to configure and use, however, Easy-RSA comes installed by default on VyOS routers (as it comes with OpenVPN itself), making it fairly standard across all
vyos@vyos# set interfaces openvpn vtun1 encryption cipher Possible completions: des DES algorithm 3des DES algorithm with triple encryption bf128 Blowfish algorithm with 128-bit key bf256 Blowfish algorithm with 256-bit key aes128 AES algorithm with 128-bit key CBC aes128gcm AES algorithm with 128-bit key GCM aes192 AES algorithm with 192-bit key CBC aes192gcm AES algorithm with 192-bit key We are moving to MSI installers in OpenVPN 2.5, but OpenVPN 2.4.x will remain NSIS-only. Compared to OpenVPN 2.3 this is a major update with a large number of new features, improvements and fixes. Some of the major features are AEAD (GCM) cipher and Elliptic Curve DH key exchange support, improved IPv4/IPv6 dual stack support and more seamless February 5, 2014 Posted by jason at 2:20 pm documentation, networking, security, vpn Tagged with: dynamic dns, openvpn, vyatta, vyos Add comments OpenVPN Client/Server Implemenation ==== key signing ==== Once the OpenVPN peers are sure about each other's identity, DH can be used to create a shared secret key for the hash function and the cipher algorithm. By combining a DH private key with the other OpenVPN box DH public key, it is possible to calculate a shared secret that only the two OpenVPN peers know.
OpenVPN in site to site mode supports either static pre-shared keys or x.509. For a quick tunnel setup between your own routers, the format option is a lot easier and arguably not less secure. Unlike most IPsec implementations, OpenVPN stores pre-shared keys in files, and uses keys of considerable length (default is 2038.
Vyatta / VyOS: site-to-site OpenVPN + Open Shortest Path First (OSPF) setup Posted in Networking By Alen Krmelj On January 18, 2013 When you scale your network from one location to another, sooner or later you may want to merge those networks and have only one. How To Set Up a Site-to-Site VPN with OpenVPN Introduction. OpenVPN is a open-source SSL VPN client/server that allows you to set up your very own encrypted VPN. VPN's are great for securely sharing and accessing resources regardless of geological separation, all you need is an internet connection and you can feel right at home no matter where you are.
VyOS – Open source router and firewall platform
Once the OpenVPN peers are sure about each other's identity, DH can be used to create a shared secret key for the hash function and the cipher algorithm. By combining a DH private key with the other OpenVPN box DH public key, it is possible to calculate a shared secret that only the two OpenVPN peers know. Find Vyatta software downloads at CNET Download.com, the most comprehensive source for safe, trusted, and spyware-free downloads on the Web Support for multiple VPN protocols makes VyOS especially suited for the VPN gateway role. Among supported protocols are IPsec (IKEv1 and IKEv2), VTI, OpenVPN in client-server and site to site mode, and Wireguard. Traditional and new tunneling protocols such as IPIP and GRE, as well as L2TPv3 and VXLAN, can be used with or without IPsec protection.