2.7.5. Site-to-Site Single Tunnel VPN Using Libreswan
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2.7.5. Site-to-Site Single Tunnel VPN Using Libreswan
Often, when a site-to-site tunnel is built, the gateways need to communicate with each other using their internal IP addresses instead of their public IP addresses. This can be accomplished using a single tunnel. If the left host, with host name west, has internal IP address 192.0.1.254 and the right host, with host name east, has internal IP address 192.0.2.254, store the following configuration using a single tunnel to the /etc/ipsec.d/myvpn.conf file on both servers:
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