Ruby Net::SSH multi-hop connection with individual authentication per hop - ruby

Question

I am working on a Ruby script that is running on Host 0.
This host can see Host 1, which itself can see Host 2. But Host 2 can't see Host 0.
Host 0 -> Host 1 -> Host 2
The goal is to establish an SSH connection between Host 0 and Host 2, utilizing Host 1.
My current SSH config file looks like this:
host host1
Hostname host1.net
User user1
host host2
Hostname host2.net
User user2
ProxyCommand ssh host1.net -W %h:%p
The script looks like this:
Net::SSH.start('host2', 'user1',
{:password => 'password1', :timeout => 5, :paranoid => false, :config => './config_file'}) do |ssh|
result = ssh.exec!("hostname")
puts result
end
This works fine for connecting to Host 1. Then this approach begins trying to connect to Host 2, but 'forgets' the paranoid parameter and does not supply a password2. It fails.
How can I make sure that the parameter paranoid and a password2 are passed on for the second SSH hop from Host 1 to Host 2?

Answer 1

I found a solution that works without a config file: The Net-SSH-Gateway project on GitHub (https://github.com/net-ssh/net-ssh-gateway)
It's integration allowed me to authenticate per hop like this:
gateway = Net::SSH::Gateway.new(hop_1["address"], hop_1["user"], {:password => hop_1["pass"], :timeout => 5, :paranoid => false})
gateway.ssh(hop_2["address"], hop_2["user"], {:password => hop_2["pass"], :timeout => 8, :paranoid => false}) do |ssh|
puts ssh.exec!("hostname")
end
gateway.shutdown!