|
Scanning Network by IP Address Range
Very often, especially if your network does not have properly configured DNS and WINS, it may be difficult to view network neighborhood. The scanning network by IP addresses feature allows retrieving the list of all available hosts.
In the fields Starting IP address and Ending IP address, enter the address range to be scanned (fig. 1). Click "down arrow" icon to copy staring address to ending address. The program can fill starting and ending addresses automatically if you select the necessary network interface in the Interface drop-down box.
Ping parameters allow configuring ping and socket time-out.
In the field Method of scanning you can specify, which method should be used for verifying availability of hosts on the network. That can be regular ping or scanning of TCP port. If both of these methods are selected, first, hosts will be pinged and then, if the result is negative, the host's TCP port will be scanned.
Fig. 1. The Scan IP address range window.
If the host being scanned does respond, it will be added to the Search results list. All hosts marked selected on the list can be added to the map using the Add to map button. You can cut off DNS suffixes before adding hosts to the map (it is useful in some cases).
The search process can be cancelled before its completion by clicking the button Stop.
If the process of scanning network takes too much of your time, you can move it to background by clicking the button Hide. When you hide the scan process, on the main window's toolbar you will see the button, which title will display the scan progress. If you click on that button, the scan process window will be restored. You will be notified when the scan process ends.
When scanning is complete, the Search results window will display the found hosts' IP addresses only. You can resolve IP addresses to hostnames by clicking the button Resolve IP.
You can add only new hosts to the map (tick Add new hosts only in the lower part of the window). This feature helps to keep your maps actual even if your network is big and grows fast.
Note: You can use IP range scanning for detection hosts with certain service running (certain TCP port opened). For example, you can find all FTP servers in your network by setting field Port to 21 (the same for HTTP - 80).
Note: This function is firewall dependent. You must setup your firewall so LANState could scan TCP ports of other hosts.
| 
