Downloading a file through gateway openwrt system

bomberb17 · 12-19-2022, 04:56 PM

My openwrt home router is accessible from ssh as

Code:

ssh homerouter.ddns.net -p 1234 -l userA

. From within the internal home network, a linux host is accessible as

Code:

ssh 192.168.1.100 -p 5678 -l userB

Both ssh servers do not have ssh keys and use password authentication.

I am looking for the cleanest way to download a (relatively small) file from the internal host to my laptop while being outside the internal network. I found online a command similar to this one below, but it doesn't work (the terminal gets unresponsive)

Code:

scp -J userA@homerouter.ddns.net:1234 ~/Downloads/ userB@192.168.1.203:5678/path/to/file.txt

Is scp the best command/cleanest way for this? And what is the correct way?

elgrandeperro · 12-19-2022, 11:10 PM

colon port is not valid ssh syntax, it is not a URL. It is either -p port or you can add it to your custom ssh_config in .ssh/ssh_config of your homedir on your client and/or your jumpshost.

https://www.cyberciti.biz/faq/create...on-linux-unix/

bomberb17 · 12-21-2022, 04:33 AM

I tried

Code:

scp -J -p 1234 userA@homerouter.ddns.net ~/Downloads/ userB@192.168.1.203/path/to/file.txt -p 5678

but it doesn't work.
So what is the correct syntax for this?

michaelk · 12-21-2022, 09:00 AM

The correct syntax is always source destination, to download a file from your home to your laptop:

Code:

scp -J userA@homerouter.ddns.net:1234 -P 5678 userB@192.168.1.100:/path/to/file.txt ~/Downloads/

You can add a -v to see some additional debug code.

Code:

scp -v -J userA@homerouter.ddns.net:1234 -P 5678 userB@192.168.1.100:/path/to/file.txt ~/Downloads/

You can use a config file in your ~/.ssh directory that basically creates a short cut to keep from having to always type in the entire command

In your original post you used two different IP addresses for your linux host i.e.
192.168.1.100 versus 192.168.1.203