Socat

usb
https://www.lucid-control.com/accessing-usb-io-module-network-linux-socat/ connect network port to usb

links
https://copyconstruct.medium.com/nonblocking-i-o-99948ad7c957 by Cindy Sridharan https://copyconstruct.medium.com/socat-29453e9fc8a6 fd  by Cindy Sridharan
 * 1) https://github.com/positron-solutions/unixsocks Want to ssh over a tor service but socat doesn't accept unix addresses and you've configured your tor client to serve local clients over a unix socket? This is your tool
 * 2) https://gist.github.com/cfra/752d6e761225fd5bf783b44abe30f707#file-ethernet-socat-ssh-md
 * 3) https://gist.github.com/lene/a517e635de86e73f6a981b0b584fb68a socat socks4 over tor
 * 4) http://www.dest-unreach.org/socat/doc/linuxwochen2007-socat.pdf
 * 5) http://www.dest-unreach.org/socat/doc/
 * 6) https://github.com/freelan-developers/freelan and http://www.freelan.org/ VPN client
 * 7) http://www.pocketnix.org/posts/Linux%20Networking:%20MAC%20VLANs%20and%20Virtual%20Ethernets
 * 8) https://www.redhat.com/sysadmin/getting-started-socat
 * 9) https://www.linux.com/news/socat-general-bidirectional-pipe-handler/ VPN with single line
 * 10) https://github.com/craSH/socat/blob/master/EXAMPLES
 * 11) https://web.archive.org/web/20140228075602/http://www.ping.eti.br/docs/01/13.txt from #https://gist.github.com/dergachev/7913990

ssh