I am trying to open a two way UDP connection between two systesm that can only connect via SSH. The systems have matching public and private key pairs for SSH without passwords. This sort of works for a few seconds the ports are open but very quickly all four instances of netcat die. Before I run the netcat commands the prots do not show up in netstat, while the netcats are running the ports to show up and look to be correct. When the netcats die the ports are removed from the netstat listing.
Has anyone done this before? Any idea why netcat would die? One of the systems I am using is a minimal Linux can cannot have new software installed. I tried but cannot get socat installed but I also don't think it would fix the problem. I used this site as an example of how to tunnel UDP via SSH. http://zarb.org/~gc/html/udp-in-ssh-tunneling.html This is the sequence of commands I run from the client side. ssh [EMAIL PROTECTED] "mkfifo fifo.server.4570" ssh [EMAIL PROTECTED] -L 4570:127.0.0.1:4570 "nc -l -p 4570 < fifo.server.4570 | nc -u 127.0.0.1 4570 > fifo.server.4570" & mkfifo fifo.client.4570 nc -l -u -p 4570 < fifo.client.4570 | nc localhost 4570 > fifo.client.4570 -- Internet downloads, dragging the RIAA kicking and screaming into the 21st century.
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