dos and tcp/ip

In our network lab (college) we are running dos crynwr, pk11, smtp,etc.
We can nametoip. Ping, echo, telnetd do not show a connection. The 3com hub shows traffic on the network.
Please direct me to a web site, or explain to me how we can communicate between computers.

Thanks in advance.
ED

Hi, https://discussions.virtualdr.com/

I think you https://discussions.virtualdr.com/ might find the answer at
www.rtd.com/pcnfsfaq/faq.html

World Library https://discussions.virtualdr.com/

[This message has been edited by World Library (edited 04-10-99).]