GitHub - rdratlos/racoon-ipsec-tools: IPsec implementaion for Debian/Ubuntu originally developed by KAME project and widely used by Apple and NetBSD
![linux - Configure ipsec vpn tunnel (network to network with IKE with preshared key) on Centos 6 with openswan - Server Fault linux - Configure ipsec vpn tunnel (network to network with IKE with preshared key) on Centos 6 with openswan - Server Fault](https://i.stack.imgur.com/NydT1.jpg)
linux - Configure ipsec vpn tunnel (network to network with IKE with preshared key) on Centos 6 with openswan - Server Fault
![linux - Configure ipsec vpn tunnel (network to network with IKE with preshared key) on Centos 6 with openswan - Server Fault linux - Configure ipsec vpn tunnel (network to network with IKE with preshared key) on Centos 6 with openswan - Server Fault](https://i.stack.imgur.com/n9lUm.jpg)