connecting a SSH tunnel on reboot?

Question

How can i reestablish a Tunnel if my localhost goes down?

i have 2 machines, Remotehost and localhost, on my localhost im running autossh to keep the tunnel alive in case of network problems.

autossh -M 20000 -L 3300:192.168.2.101:3306 -R 3000:192.168.1.3:3000 disp@192.168.2.100 -p 80

but what if i need to reboot the localhost? how do i auto reconnect the tunnel then?

score 14 · Accepted Answer · answered Oct 20 '10 at 09:14

14

Put the command to establish the tunnel in some script which is executed on boot. You could use /etc/rc.local, you could write your own init script in /etc/init or /etc/init.d, or more elegantly, you could write a script in /etc/network/if-up.d. The last option executes the script after the network interface comes up.

answered Oct 20 '10 at 09:14

Michel

426

Calling it on /etc/network/if-up.d will not make it be called again and again every time interface get down and up again? – TNT Jan 31 '18 at 19:57

score 9 · Answer 2 · answered Nov 15 '12 at 09:13

9

Another simple option is to add @reboot autossh ... & to /etc/cron.d/autossh

answered Nov 15 '12 at 09:13

sorin

9,888

2

This will look as: @reboot autossh -f -nNT -R 3269:host-providing:3269 firewalled-host & – nicoX Oct 07 '13 at 09:03
2

no need to add "&" at the end, -f already place the command in background – Pierre Maoui Apr 07 '16 at 13:04

connecting a SSH tunnel on reboot?

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