Comments on: How to create IPv4 GRE tunnels in Ubuntu http://onvox.net/linux/how-to-create-ipv4-gre-tunnels-in-ubuntu Mon, 12 Sep 2011 21:17:29 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Quora http://onvox.net/linux/how-to-create-ipv4-gre-tunnels-in-ubuntu/comment-page-1#comment-20 Quora Mon, 12 Sep 2011 21:17:29 +0000 http://onvox.net/?p=94#comment-20 <strong>What Saas or Free/Opensource SSL VPN solutions are available that connect cloud servers and local area network servers/desktops?...</strong> Also check out this article on setting up GRE tunnels in Ubuntu http://onvox.net/linux/how-to-create-ipv4-gre-tunnels-in-ubuntu... What Saas or Free/Opensource SSL VPN solutions are available that connect cloud servers and local area network servers/desktops?…

Also check out this article on setting up GRE tunnels in Ubuntu http://onvox.net/linux/how-to-create-ipv4-gre-tunnels-in-ubuntu...

]]> By: GRE Tunnel | wiki'ed http://onvox.net/linux/how-to-create-ipv4-gre-tunnels-in-ubuntu/comment-page-1#comment-17 GRE Tunnel | wiki'ed Wed, 19 Jan 2011 20:33:43 +0000 http://onvox.net/?p=94#comment-17 [...] GRE tunnels can incapsulate IPv4/IPv6 unicast/multicast traffic, so it is de-facto tunnel standard for dynamic routed networks. You can setup up to 64K tunnels for an unique tunnel endpoints pair. It can work with FreeBSD and cisco IOS. Kernel module is ‘ip_gre’. Server_1 $ modprobe ip_gre $ ip tunnel add gre1 mode gre local 10.20.30.40 remote 50.60.70.80 $ ip address add dev gre1 192.168.1.2 peer 192.168.1.1/30 $ ip link set dev gre1 up $ ip route add 172.16.10.0/24 via 192.168.1.1 $ ip link show gre1 $ ifconfig gre1 Server_2 $ modprobe ip_gre $ ip tunnel add gre1 mode gre local 50.60.70.80 remote 10.20.30.40 $ ip address add dev gre1 192.168.1.1 peer 192.168.1.2/30 $ ip link set dev gre1 up $ ip route add 172.16.20.0/24 via 192.168.1.2 $ ip link show gre1 $ ifconfig gre1 $ ping 192.168.1.2 PING 192.168.1.2 (192.168.1.2) 56(84) bytes of data. 64 bytes from 192.168.1.2: icmp_seq=1 ttl=64 time=201 ms $ ip tunnel del gre1 $ rmmod ip_gre Ubuntu: http://onvox.net/linux/how-to-create-ipv4-gre-tunnels-in-ubuntu [...] [...] GRE tunnels can incapsulate IPv4/IPv6 unicast/multicast traffic, so it is de-facto tunnel standard for dynamic routed networks. You can setup up to 64K tunnels for an unique tunnel endpoints pair. It can work with FreeBSD and cisco IOS. Kernel module is ‘ip_gre’. Server_1 $ modprobe ip_gre $ ip tunnel add gre1 mode gre local 10.20.30.40 remote 50.60.70.80 $ ip address add dev gre1 192.168.1.2 peer 192.168.1.1/30 $ ip link set dev gre1 up $ ip route add 172.16.10.0/24 via 192.168.1.1 $ ip link show gre1 $ ifconfig gre1 Server_2 $ modprobe ip_gre $ ip tunnel add gre1 mode gre local 50.60.70.80 remote 10.20.30.40 $ ip address add dev gre1 192.168.1.1 peer 192.168.1.2/30 $ ip link set dev gre1 up $ ip route add 172.16.20.0/24 via 192.168.1.2 $ ip link show gre1 $ ifconfig gre1 $ ping 192.168.1.2 PING 192.168.1.2 (192.168.1.2) 56(84) bytes of data. 64 bytes from 192.168.1.2: icmp_seq=1 ttl=64 time=201 ms $ ip tunnel del gre1 $ rmmod ip_gre Ubuntu: http://onvox.net/linux/how-to-create-ipv4-gre-tunnels-in-ubuntu [...]

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