My desktop is Ubuntu. There is a host class with name
my_host_machine, which includes several servers like:
my_host_machine__123, etc. It's uncertain which server will be connected when I ssh
my_host_machine. And directly connecting to a server like
my_host_machine_1 gets time out.
We are supposed to use one of those servers as a proxy to get access to another server
a_remote_server. Directly ssh to
a_remote_server from the local desktop is forbidden.
My question is, can I directly connect to
a_remote_server from my desktop via proxy command?
I tried setting
~/.ssh/config on my local desktop as on this page.
Host Remote HostName a_remote_server User Tom Port 22 ProxyCommand ssh Tom@my_host_machine nc %h %p %r
nc: port range not valid
ssh_exchange_identification: Connection closed by remote host
What's wrong with my config file?