Scanning multiple IP ranges

Started by hostofseraphim

Scanning multiple IP ranges   21 August 2014, 18:47

Hi,
I have 3 network ranges to scan:
192.168.5.0/32
192.168.111.0/32
192.168.113.0/32
(192.168.111.0/32 and 192.168.113.0/32 are VPN distant sites)

I can scan these networks only by scanning 192.168.5.1 - 192.168.113.254; it's a bit... long. I've tried to scan "192.168.5.1 - 192.168.5.254 ; 192.168.113.1 - 192.168.113.254", but this range is not allowed on WiFi Guard.

Can WiFi Guard scan many networks with non-consecutive ranges?

smile
Attachments:
open | download – multirange.png (9 KB)
SoftPerfect Support forum - Andrew avatar image

Re: Scanning multiple IP ranges   22 August 2014, 12:12

You have almost succeeded wink
Just make it comma-separated, not semicolon-separated. For example:
192.168.5.1 - 192.168.5.254, 192.168.113.1 - 192.168.113.254
Jan

Re: Scanning multiple IP ranges   28 February 2015, 17:59

I defined the following comma separated IP-ranges:
192.168.2.1 - 192.168.2.254, 192.168.3.1 - 192.168.3.254

Only the 192.168.3.1 - 192.168.3.254 range is scanned.
192.168.3.0 is the subnet of the PC where Wifi Guard is used.
I can ping the 192.168.2.0 subnet.
What is wrong here?
SoftPerfect Support forum - Andrew avatar image

Re: Scanning multiple IP ranges   28 February 2015, 20:45

The short answer: WiFi Guard cannot determine MAC addresses outside the current subnet.

The long answer: The ARP protocol that WiFi Guard uses to find out the MAC address of a device does not work across subnets. In your case the 192.168.2.x network is behind the router, so there is no way to discover MAC addresses in that network. As the sole purpose of WiFi Guard is to identify devices by MAC address, it does not show any devices whose MAC address cannot be determined.
Luke

Re: Scanning multiple IP ranges   06 July 2016, 20:02

What about multiple VLANs? Is it possible to scan more than one?
SoftPerfect Support forum - Andrew avatar image

Re: Scanning multiple IP ranges   06 July 2016, 23:22

Unlikely. As far as I know ARP requests cannot cross VLAN boundaries.
Luke

Re: Scanning multiple IP ranges   07 July 2016, 20:07

Do you have an advice, how to perform a scan over a different VLAN?
SoftPerfect Support forum - Andrew avatar image

Re: Scanning multiple IP ranges   08 July 2016, 00:33

You would have to connect your PC to the VLAN you want to scan (my understanding is that a PC can only be connected to one VLAN at a time).

Sometimes you can get the answer faster if you try the forum search and/or have a look at the software user manual to see if your question has already been answered.

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