Network Monitor



 
 
The Distinct Network Monitor includes a built-in Ping utility as well as a Traceroute utility program.
 
Ping
The Ping program is useful to find out whether a system is reacheable directly from the computer that is running the Network Monitor. To use simply select Ping from the Tools menu and enter the name or IP address of the system you are trying to reach.
 
TraceRoute
TraceRoute allows you to find out the route that a packet will take to get to its destination. Normally TraceRoute uses ICMP packets to do this, you can however select to use UDP packets instead.
 
WhoIs
The WhoIs Utility allows you to find out who a domain name or IP address is registered to. To make a query:
  1. Select the type of query you wish to make. That is by IP address or domain name
  2. Enter the IP address or domain name you wish to receive information about in the Domain Name or IP address text box.
  3. Enter the WhoIs server that you wish to query. If you leave this entry on Automatic, we will automatically choose the server that is most likely to be able to resolve the address or domain entered.
  4. The results of the query will be displayed in the information area on the dialog box.
Note: If your connection to the WhoIs server is timing out before you are able to get a response, you may increase the timeout value.
 
TCP and UDP Connections
This utility shows all the currently open TCP and UDP ports and reports on the status of the TCP ports. Ports may be:
  • LISTENING : these ports may either be open ports to which a connection can be made from another system, they can also have a current connection established (in which case you will see the same port number listed as ESTABLISHED or they may be open but in a “hung” position. In this case another computer may not connect to this port. When a port is in LISTENING state and you wish to check whether this is a “hung” connection you can try to scan that same port using the Scan TCP Ports tool.
  • TIME-WAIT : This usually means that a port did have an open connection which has been terminated and the port is now about to be closed
  • ESTABLISHED : this means that the port is both open and has an active connection going.
 
Scan TCP Ports
The Scan TCP ports tool allows you to scan one or a range of ports on one or more systems to find out which ports on that system are open and do not have a session currently established. Please note that if you are scanning a large range of ports it will take some time to complete the scan, since the program attempts to connect to each port within the specified timeout value. Other features in the Network Monitor will not be available until the scan is completed.

This tool will report whether it has found a port open or was unable to connect to the port.

You may set the number of times that the application should try to establish a connection with any of the ports it is scanning as well as the time it should wait before it times out waiting to connect.

Note: Ports that are currently open and have an established connection will show up as ports for which a connection attempt failed.

Base Conversion
 
Base Conversion converts your hexadecimal, decimal or octet number into all three formats. Just enter the format you have to see the value for the other two formats.

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