macOS IP scanner

[dpiol]

Hi

I want to write a kind of an IP scanner, telling me which devices are active in a subnet. This in Objective-C for Mac OS X.

Can you point me in the right direction? What are the appropriate Objective-C classes to look for?

thanks

 

[robvas]

Hi

I want to write a kind of an IP scanner, telling me which devices are active in a subnet. This in Objective-C for Mac OS X.

Can you point me in the right direction? What are the appropriate Objective-C classes to look for?

thanks

https://developer.apple.com/library...cs/Articles/UsingSocketsandSocketStreams.html

 

[mfram]

Keep in mind that Ethernet switches limit the network traffic any single port will see. Even if your network card on your machine is set to promiscuous mode, your machine still won't see all subnet traffic unless you have a managed network switch that supports a monitor mode.

 

[subsonix]

ping 255.255.255.255

Or 192.168.n.255 etc for a specific local subnet.

For a GUI version check out NetworkUtility, both are included in OS X.

 

[robvas]

Keep in mind that Ethernet switches limit the network traffic any single port will see. Even if your network card on your machine is set to promiscuous mode, your machine still won't see all subnet traffic unless you have a managed network switch that supports a monitor mode.

He wants to write a scanner not a sniffer