Questions[nmap](server)

To get nmap results, one has to wait for the end of the scan.

How can I force nmap to gradually display the newly found hosts and open ports while it is running?

At work, the infrastructure team is rolling out new VMs with RHEL7 installed as the base OS. This particular image comes with the nmap-ncat version of Netcat and does not have NMap installed. We are precluded from installing anything on the machines.

Previously, we were using the GNU Netcat which have the -z option to scan a remote host/port to check if it was open. Something like this:

nc -z -v -w 3 remote.host.name 1234

How can I achieve the same check with the new ncat which does not have the -z option on a system where I cannot install nmap?

Is there a way to scan for free IPs on the network? I use nmap -sP 192.168.1.0/24 but this actually shows hosts that are up.

How can I issue a nmap command that shows me all the alive machines' IP addresses and corresponding hostname s in the LAN that I am connected? (if this can be done in another way/tool you surely are welcome to answer)

In our company, I want to check if users are running web servers on port 80 and 8080.

I downloaded nmap and ran this command:

nmap -p 80,8080 192.168.1.0-255

I got a list of IPs and tried to access them in my browser (EG: 192.168.1.1:8080) but wasn't able to connect.

Is my nmap command correct?

Thanks!

EDIT:

Here's the response:

Host is up (0.050s latency).
PORT     STATE SERVICE
80/tcp   open  http
8080/tcp open  http-proxy