To configure a VPN bridge,

• set Create for SSH VPN to ON,
• enter the Number of virtual adapters (TAP interfaces) required,
• configure IP address for the bridge interface, and
• set the Netmask.

 This interface and the interface on the remote Linux system must be in the same IP subnet.

Click on OK to save your configuration.

Start  the SSH tunnel.

autossh is a program to start a copy of ssh and monitor it, restarting it
as necessary should it die or stop passing traffic.

Once started, you can move the program to the background.

# autossh -M 9876 -o ServerAliveInterval=60 -o Tunnel=ethernet \
  -t -f -w 0:0 -i <path-to-private-key>-NCT charon@<public-AWS-instance-IP>

-i   denotes the path to the private key matching the public key copied to the host system.
-w denotes the number of the local and remote tunnel interfaces for tunnel device forwarding
     (e.g., the 0 in interface tap0). 
-N denotes that no remote command should be executed
-T disables pseudo-terminal allocation
-C requests data compression
-f requests that the command go into the background before command execution