A simple realization of SSH reverse tunnel.
Just establish a tunnel between master and slave, and forward all requests and response to it. Like a reverse shell that only does network requests.
The commands below equal to ssh -R 0.0.0.0:10002:127.0.0.1:22 root@192.168.3.79
compile.
$ go build -o master master.go tunnel.go
tunnel port 10001, public port 10002.
$ ./master -t 0.0.0.0:10001 -l 0.0.0.0:10002
compile.
$ go build -o slave slave.go tunnel.go
tunnel addr 192.168.3.79:10001, connect to localhost:22
$ ./slave -t 192.168.3.79:10001 -c localhost:22