Unable to send files using netcat

Question

I am using netcat to send file over my campus network. I have used

c:\nc -w200 10.x.x.x 9638 < file.txt

on my client machine and

c:\nc -v -L -p 9638 >> nc.out

on my computer that is working as a server to receive files. It worked completely fine when i tested it using localhost hence sending and receiving files on my system only.I am using the netcat version without the GAPING_SECURITY_HOLE downloaded from http://www.rodneybeede.com/Compile_Netcat_on_Windows_using_MinGW.html.

Our systems are connected to the net using proxy servers. Could they be interfering? Also pinging computers is disabled. I am working on windows for now.

Answer 1

Yes proxy and router may interfere. Try to see if you can telnet to that port

telnet <ip> port

That will tell you if you can access that machine on that port