Doug, 

Try this, ok this is the correct syntax 

nmap -sP -p 9100 192.168.1-254 

You have define a range 

nmap -sP 10.0.0.0/8 

I never see  a wild character used successful. 


Pup

On Tue, Aug 3, 2021 at 10:02 PM Carlos E. R. <robin.listas@telefonica.net> wrote:
On 04/08/2021 02.47, Carlos E. R. wrote:
> On 04/08/2021 02.21, Douglas McGarrett wrote:
>> This doesn't make sense:
>>
>> localhost:~ # nmap -sP 192.168.1.*
>> Starting Nmap 7.70 ( https://nmap.org ) at 2021-08-03 20:11 EDT
>> Nmap done: 256 IP addresses (0 hosts up) scanned in 206.30 seconds
>>
>> It should have at least found the Epson printer and the router. I was
>> hoping it would find the
>> old HP printer, so I would know what its IP is.
>
> Not really. With the options you used, it will only find them if they
> respond to ping.
>
> try:
>
>  nmap -n 192.168.1.*
>

To find a networked hp printer, you probably want to do:

nmap -p 9100 -n 192.168.1.*

--
Cheers / Saludos,

                Carlos E. R.

  (from oS Leap 15.2 x86_64 (Minas Tirith))



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