I have a test network setup based on virtual machines. My host machine, a web server and the firewall is under the
192.168.0.0/24 network (gateway is
192.168.0.1); a server machine is located behind the firewall on the
10.40.1.0/24 network (firewall eth1 is its gateway with IP
10.40.1.1). Please note that the firewall has no rules at this point.
How can I use
nmap to detect/scan the server behind the firewall on the