[mdlug] Nmap & Zenmap

[Richard L]

I installed Nmap with the command:
sudo apt-get install Nmap

I also installed the GUI frontend for it Zenmap from the Software Manager.
I installed the Flathub.

To use Zenmap, I run Zenmap (listed under Start > Internet). I input the
Target by IP address, and use the Profile of Intense scan. Zenmap created
the Command for me (e.g. nmap -T4 -A 192.168.1.1). I get an Nmap Output. I
then click in the Ports / Hosts tab to get easier to understand output.

It even scanned my router and networked printer and the Roku Streaming
Stick for my TV and my Android tablet.

My Android phone and Windows box blocked the ping probes.

Thank you Carl.

On Thu, Mar 21, 2024, 15:58 Carl T. Miller <carl at carltm.com> wrote:

> Yes, one thing I like to do when setting up a firewall
> is to run nmap to find all the open ports.  Then for
> each of the ports I decide whether to stop the service,
> allow the service, or keep the service running and
> block access to it from the network.
>
> An example of the last option would be a service
> like mysqld, which I may need to run, but no
> access should be granted over the network.
>
> c
>
>
> On 3/21/24 02:49 PM, Richard L wrote:
> > I watched the video that you recommended, Carl. Per its recommendation,
> I'm
> > installing Postmaster on my Linux boxes.
> >
> > At first, it blocked Barrier from working, until I changed a setting.
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