Comments:
: Here are the answers to your questions: : 1. PortScan tries to connect using the TCP Internet : Protocol. If you're scanning TCP port 7 (echo), you're : scanning for a TCP Based Echo Service. RFC862 outlines this : service. I don't believe that NT servers run this service, : at least not by default. Most UNIX servers do run this : service. Perhaps you should be using the PING utility to : check the existence of computers on the network. Look : up "ping utility" in Windows Help, as a ping utility comes : with Windows 9x, NT, 2000, ME. Look up "Echo or Echo Reply : Messages" in RFC792 to read how the ping utility works using : ICMP. You can find free and shareware utilities that will : ping a range of IP addresses. Unfortunately, the NetView : suite does have a ping utility, as it deals strictly with TCP. : RFCs: : http://www.ietf.org/rfc/rfc0792.txt : http://www.ietf.org/rfc/rfc0862.txt : 2. NetView 1.0.0.6 is scheduled to be released this week. : This version allows you to view computers without any shared : resources by filling in a new checkbox to show special/hidden : Interprocess Communication resources. Any computer with : NetBIOS turned on will have this IPC resource shared. : However, Windows 9x machines only have this resource when : file and print sharing is enabled. So, you can use this : feature to return IP addresses and NetBIOS names for : computers that have file and print sharing turned on, even if : nothing is being shared. : : : I am in the process of cleaning up IP address assignments : : on a network which was previously only "semi-managed". It : : think that NetView and PortScan can help, but there are a : : couple of things that I haven't been able to figure out: : : 1. If I use PortScan to try to locate all addresses in use : : in our range, and select port 7 (Echo), I only see the NT : : servers. Is there a different port that I can use to find : : anything which will respond to a Ping? : : 2. If I do a NetScan for NETBios names, I only see nodes : : which have shares open. I know, for example, that there : : are two IP addresses in use, in a range which I wish to : : reserve for another purpose -- but I have no idea which : : devices are on those addresses. Does your software give me : : a way to find this information? : : If possible, please e-mail me with the answers. : : Levit & James, Inc. : : Fletcher James : : President : : fjames@levitjames.com

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