SSHException('Error reading SSH protocol banner',) while sshing to a machine behind a load balancing rule

[Ashutosh Kelkar]

I am currently trying to validate the stickiness policy of a load balancing
rule by sshing to the public IP of the LB rule and verifying that the
request goes to the same machine every time.

Here is the config I use to create the LB rule.

"lbrule": {

                                    "name": "SSH",
                                    "alg": "roundrobin",
                                    # Algorithm used for load balancing
                                    "privateport": 22,
                                    "publicport": 22,
                                    "openfirewall": True,
                                    "startport": 22,
                                    "endport": 2222,
                                    "protocol": "TCP",
                                    "cidrlist": '0.0.0.0/0',
                                },

My ssh attempts fail with the following error : SSHException('Error reading
SSH protocol banner',)

Is there some more setup that is needed for SSH to work correctly? The SSH
error points to a possible firewall configuration issue.

Regards
Ashutosh