Re: USB "null modem" cables and related Linux driver questions
- Date: Fri, 1 Jun 2018 04:45:38 -0500
- From: Richard Owlett <rowlett@xxxxxxxxxxx>
- Subject: Re: USB "null modem" cables and related Linux driver questions
On 05/31/2018 11:07 AM, Dan Ritter wrote:
On Thu, May 31, 2018 at 09:21:27AM -0500, Richard Owlett wrote:
I have two computers with USB ports.
I wish them to communicate as simply as mid-20th-century computers did.
Then we used RS232-C with a null modem &/or appropriate software software
at both ends.
The underlying problem is that both ends egotistically expect to be
The hardware problem is solvable [e.g.
The software is another case :<
The best Linux specific link I've found is dated September 2005
I've done DuckDuckGo searches for permutations/combinations of
usb, "peer to peer", lan, and bridge.
Most is Windows/Mac centric.
There were hints that needed drivers may exist in current Linux core.
Pointers to good references and/or better search terms?
Do you want:
- One end is a terminal, the other end offers login? "agetty
serial" and "minicom"
- TCP/IP over RS-232 serial? Keyword is "PPP".
- TCP/IP over ethernet attached via USB? "usbnet" and treat them
like ethernet adapters.
- Connect an actual hardware terminal like a VT320 to your Linux
box? "agetty serial" again.
Seeing those references mentioned together in this context gives me
hints towards understanding some of what I've read.
- Something else? Describe it.
Your list pretty much covers it.
Also a curiosity bump that's been around since USB 1.0 .