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Nmap not making arp requests to gateway (v7.70, Windows) #1661
I am connected to a the network 10.12.0.0/22 (10.10.12.0-10.10.15.255), on Windows via an OpenVPN connection. The network includes a gateway, 10.10.12.1, which provides access to the 10.10.10.0/24 network. The routing table displays this route when I run
When attempting a ping sweep on the 10.10.10.0/24 network with the command
I can confirm that no such ARP request has been made by viewing the arp table with the command
Once the MAC address is resolved by manually pinging something, the nmap ping sweep works as expected. The problem is not affected by running nmap from an elavated command prompt.
Thanks for the very interesting bug report! Please provide a couple additional details:
Does scanning through a default gateway work correctly? In other words, does this appear to be limited to routes that use a specific gateway address for a specific network?
Here we go:
Scanning through the default gateway appears to work correctly.