Tech Program

You may not know it, but the IPv4 address of your computer contains tons of useful information about whatever Wi-Fi network you're on. By knowing what your IPv4 address and subnet mask are telling you, you can easily scan the whole network range, locate the router, and discover other devices on the same network.

While IP addresses like 192.168.0.5/24 may look familiar to you, the IP address assigned to your computer by the router is actually telling you a lot about the network itself. If we didn't know anything at all about which network we were on, we might have a hard time running a scanning tool that asks us to provide a range of IP addresses to scan. We could panic and scan every IPv4 address in existence by just scanning 0.0.0.0/0, but at 42,94,967,294 possible IP addresses, this would take a very long time.


Instead, we can be smart about how we scan a network by learning a little about how IPv4 works. You don't need to be a network engineer to be smart about your scanning and to quickly calculate a network range, and learning to quickly find the router on a network can save you from needing to reveal your presence with a scan.

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604 viewsedited  Aug 23, 2019 at 12:07

You may not know it, but the IPv4 address of your computer contains tons of useful information about whatever Wi-Fi network you're on. By knowing what your IPv4 address and subnet mask are telling you, you can easily scan the whole network range, locate the router, and discover other devices on the same network.

While IP addresses like 192.168.0.5/24 may look familiar to you, the IP address assigned to your computer by the router is actually telling you a lot about the network itself. If we didn't know anything at all about which network we were on, we might have a hard time running a scanning tool that asks us to provide a range of IP addresses to scan. We could panic and scan every IPv4 address in existence by just scanning 0.0.0.0/0, but at 42,94,967,294 possible IP addresses, this would take a very long time.


Instead, we can be smart about how we scan a network by learning a little about how IPv4 works. You don't need to be a network engineer to be smart about your scanning and to quickly calculate a network range, and learning to quickly find the router on a network can save you from needing to reveal your presence with a scan.

BY Tech Program