These steps set up remote access to a home network using an ssh tunnel to a DreamCompute host.

1. At the DreamCompute Access and Security panel…
   1. Create a Security Group ruleset. Add rules to open the desired ports (e.g., port 12345):

      Manage Rules
      Add Rule: Custom TCP Rule, Ingress, Open Port 12345, Remote CIDR = 0.0.0.0/0.

   2. Create a key pair, download the public key (e.g., cloud.pem), and put it in the home server '.ssh' directory.
2. Create a DreamCompute server instance.
3. Using ssh from home machine, connect to Dreamhost instance. Edit /etc/ssh/sshd_config and add this at the end (assuming default user is ubuntu):

   ClientAliveInterval 30
   ClientAliveCountMax 3
   
   Match User ubuntu
       GatewayPorts yes

4. Create an A-type DNS record for the DreamCompute IP address with a name like casa.example.com.
5. To create and test the tunnel use the command below on the home server, then try to connect to port 12345 on casa.example.com.

   $ ssh -NR '*:12345:192.168.1.123:54321' casa.example.com

6. On home server, create a ~/.ssh/config file with something like this…

   Host tunnel
   HostName casa.example.com
   User ubuntu
   IdentityFile ~/.ssh/cloud.key
   BatchMode yes
   EscapeChar none
   RemoteForward *:9190 192.168.1.190:2190
   RemoteForward *:9191 192.168.1.191:2191
   RemoteForward *:9999 192.168.1.192:2222

7. Add this line to crontab:

   @reboot autossh -fN tunnel

1. DreamCompute instance
2. sshd_config manpage
3. autossh manpage