SSH truly is the best protocol ever invented by humans in my opinion, and you can quote me on that. It is a Swiss army knife, and in the right hands, it can be used for any situation. One of the things it can be used for is a Layer 2 VPN through a TAP adapter. Its quite useful, as many networks that bock VPN’s wont always block ssh.<\/p>\n
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First, we need to set some local options. With the <\/p>\n Now we need to run the local command after a successful connection. you will need to modify this for your desired setup, but for mine, I run <\/p>\n Next, we need to set the option for the tunnel to be a Layer 2 tunnel. with the option <\/p>\n Now we need to set the TAP adapter number. I would not leave it default. With the option <\/p>\n Next, set the remote server with the option <\/p>\n I’d recommend that you change the connection timeout to something like 10 seconds. use <\/p>\n-o<\/code> flag, you can set an SSH configuration option. In this instance, we need to set PermitLocalCommand<\/code> to yes to allow a local command to execute after a successful connection. with the option -o \"PermitLocalCommand=yes\"<\/code> it will set this option for this command only.<\/p>\n-o \"LocalCommand=ifconfig tap5 up && ifconfig tap5 10.0.25.1 netmask 255.255.255.0\"<\/code>, with tap5 being the TAP adapter created on the local machine going to the remote machine.<\/p>\n-o Tunnel=ethernet<\/code><\/p>\n-w 5:5<\/code> I set the tap adapter to be tap5 on both local and remote machines.<\/p>\n-t root@yourip<\/code><\/p>\n-o ConnectTimeout=10<\/code> to set it for the command.<\/p>\n