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{{usefulnote}}
{{usefulnote}}
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{{Warning box| Note that you should try and learn as much as you can about VPN, Ipsec, and Security in general before playing with this. You risk leaving your server exposed to the bad guys.
Whilst the contribs do their best to make sure there is a simple secure setup, I make no guarantees !
Where possible use RSA keys instead of passwords.
An alternative solution is https://wiki.contribs.org/OpenVPN_SiteToSite or https://wiki.contribs.org/OpenVPN_Bridge
Where possible avoid the use of PPTP as it was cracked a long time ago and is very easy to read }}
=== Version ===
=== Version ===
[[File:openswan.jpg]]
[[File:openswan.jpg]]
[http://www.openswan.org Openswan] is a free implementation of IPsec& IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks. Everything passing through the untrusted net is encrypted by the ipsec gateway machine and decrypted by the gateway at the other end of the tunnel.The resulting tunnel is a virtual private network or VPN.
[http://www.openswan.org Openswan] is a free implementation of IPsec & IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks. Everything passing through the untrusted net is encrypted by the ipsec gateway machine and decrypted by the gateway at the other end of the tunnel.The resulting tunnel is a virtual private network or VPN.
==Libreswan==
==Libreswan==
https://github.com/reetp/smeserver-libreswan
https://github.com/reetp/smeserver-libreswan
{{Note box|I usually have the the latest version of libreswan in my own repo https://wiki.contribs.org/User:ReetP
Use at your own risk !}}
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