The other day, I was using ssh as a SOCK5 proxy. To recap, I needed to access a resource that was only available from a remote Linux PC (i.e. my machine → remote Linux PC → network resource). One of the network resources was an embedded device with an SSH server. Hopping to the remote Linux PC over SSH was fine, but once there, I would then need to connect to my embedded device by calling SSH again (i.e. my machine → remote Linux PC (hop 1) → embedded device (hop2)). Fortunately, this step is, in fact, unnecessary and the process can be simplified.
I’ve been needing to use an embedded system that had network support but lacked many of the (useful) utilities that we’ve gotten used to. I needed this device to talk to an HTTP endpoint (an array of relays accessible via Ethernet) that was configured with basic authentication. With curl, this is a simple case of running:
curl username:password@10.0.3.20/outs.cgi?out0=0curl happily understand this syntax and correctly negotiates basic auth. Without curl, this task gets a little more involved…