ssh proxy route connection by ssh options SendEnv ?

[kelify]

i want to use that porject as a ssh router , my mutli backend or upstream linux server has a same user account. so i am going to use client command like that "ssh user@proxy_address -p 2222 -o SendEnv=upstream_addr -o SendEnv=upsream_port " to connect the proxy server ,and than the server will route connection by env . how to do that at this project?

[jonathanMelly]

hi, here is how I would translate your situation with the use I make of this project:

ssh user_upstreamIdentifier@proxy_address -p 2222

with following impl:

func FindUpstreamByUsername(username string) (string, error) {
	parts := strings.Split(username, "_")
	if len(parts) == 2 {
		host := parts[1]
		if host == "upstream1" {
                      return "10.0.0.5" // or net.LookupHost(host)...
                }
	}
	return "", errors.New("access denied")
}

[kelify]

hi, thranks for your answer, but my background is my upstreams server have a same account for login. in your example, that username actually pass to upstream server is difference. can you have some method to impl my purpose？

[jonathanMelly]

hi, thranks for your answer, but my background is my upstreams server have a same account for login. in your example, that username actually pass to upstream server is difference. can you have some method to impl my purpose？

Ok from what I understand of your requirement and this project what you want is not possible as sshr is "just tunneling" the network traffic (incl. original username) to a host...

@tsurubee am I right ?