Using python nmap module to scan hosts generated from a previous scan

Question

I've been playing with the module straight from the python command line to try and figure out how it all works, and start to piece together how the script I want to write is going to need to work. What I'd like to do, is do a simple host discovery scan first, such as -n -sP -PE, then use the all_hosts() function to generate the host list for the actual port scan. So if I do... ``` import nmap nm = nmap.PortScanner() nm.scan(hosts='XXX.XXX.XXX.X/24', arguments='-n -sP -PE') ``` Then nm.all_hosts() gives me exactly what I'm looking for, a shortened list of all the active hosts that the scan found. Now, the problem I'm having is passing that into the next scan. If you just do something like ``` hostlist = nm.all_hosts() nm.scan(hosts=hostlist etc) ``` Then it complains about not being able to use a list for the hosts argument. Ok, makes sense. So I tried to make it comma separted, so they'd show up as aaa.aaa.aaa.aaa, bbb.bbb.bbb.bbb etc, by doing... ``` hostlist = "" for item in nm.all_…

Accepted Answer

If you remove the comma it will work. Multiple hosts are listed with only a space between them.

Example of use:

```
import nmap
nm = nmap.PortScanner()

hostlist = ' '.join(nm.all_hosts())
nm.scan(hosts=hostlist, arguments='-n -sP -PE')
```

Using python nmap module to scan hosts generated from a previous scan

Solution

Problem