I have LanScan.app (green duck face icon) on my MacOS computers, and
it works very well for finding live IPv4 addresses and ports used in
my local network.
I'd like to do the same thing on my Win10 ThinkPad. This led me to
the "Angry IP Scanner", which I attempted to install. Norton scanned
the installer and flagged a bit of malware and stopped the train. No
bullets flew by, but it was _very_ emphatic. So I stopped.
I'm not the first to need to ports et al, so my question is what to
people actually use and why do they choose this versus that?
And, is Norton all wet, or has Angry been infected on GitHub?No idea. I don't use an AV.
On 4/9/2026 2:20 PM, joegwinn@comcast.net wrote:
I have LanScan.app (green duck face icon) on my MacOS computers, and
it works very well for finding live IPv4 addresses and ports used in
my local network.
I'd like to do the same thing on my Win10 ThinkPad.-a This led me to
the "Angry IP Scanner", which I attempted to install.-a Norton scanned
the installer and flagged a bit of malware and stopped the train. No
bullets flew by, but it was _very_ emphatic.-a So I stopped.
I'm not the first to need to ports et al, so my question is what to
people actually use and why do they choose this versus that?
Nmap on my Eunices (I think a Windows port is available but it may
not be a GUI).
EMCO's Network Inventory Enterprise on Windows (and, oriented
towards detecting windows hosts on the network)
And, is Norton all wet, or has Angry been infected on GitHub?No idea.-a I don't use an AV.
Of course, you can also just ping a range of addresses if all
you want to know is "anyone home?"
On 4/9/2026 2:20 PM, joegwinn@comcast.net wrote:> I have LanScan.app (green duck face icon) on my MacOS computers, and> it works very well for finding live IPv4 addresses and ports used in> my local network.> > I'd like to do the same thing on my Win10 ThinkPad. This led me to> the "Angry IP Scanner", which I attempted to install. Norton scanned> the installer and flagged a bit of malware and stopped the train. No> bullets flew by, but it was _very_ emphatic. So I stopped.> > I'm not the first to need to ports et al, so my question is what to> people actually use and why do they choose this versus that?Nmap on my Eunices (I think a Windows port is available but it maynot be a GUI).EMCO's Network Inventory Enterprise on Windows (and, orientedtowards detecting windows hosts on the network)> And, is Norton all wet, or has Angry been infected on GitHub?No idea. I don't use an AV.Of course, you can also just ping a range of addresses if allyou want to know is "anyone home?"
+1 for nmap-a ( I use it from linux)
The router can of course also give excellent information as it
will normally be acting as a dhcp server and may have other
diagnostic capabilities.
Capturing traffic promiscuously as pcap files for display in
Wireshark is also useful as it can show ARP requests which give
more low level clues about what is physically present than many
other tools.
Most networks use switches which prevent anything apart from
broadcasts from being visible to all devices.-a Packet dumping
using tools within the router is probably the most useful if
available as it will capture anything that is trying to access
the internet.
Nmap, yes the windows port works well.
On 4/9/2026 3:39 PM, Martin Rid wrote:
Nmap, yes the windows port works well.
Is it a graphical interface? Or, just a text console?
On Thu, 9 Apr 2026 17:17:30 -0700, Don Y <blockedofcourse@foo.invalid>
wrote:
On 4/9/2026 3:39 PM, Martin Rid wrote:
Nmap, yes the windows port works well.
Is it a graphical interface? Or, just a text console?
GUI for NMAP:
<https://nmap.org/zenmap>
Norton considers any port scanner to be a hacker tool and therefore
blocks the installation. Just turn Norton off (see below). You
should also add Angry IP Scanner to Norton's exclusion list.
"AI Overview
To temporarily turn off Norton Antivirus on Windows or Mac,
right-click the yellow Norton icon in the system tray/menu bar and
select Disable Auto-Protect and Disable Smart Firewall. Select a
duration, such as 15 minutes or until system restart, to allow for
temporary tasks like software installation."
On Thu, 09 Apr 2026 19:29:40 -0700, Jeff Liebermann <jeffl@cruzio.com>
wrote:
On Thu, 9 Apr 2026 17:17:30 -0700, Don Y <blockedofcourse@foo.invalid> >>wrote:
On 4/9/2026 3:39 PM, Martin Rid wrote:
Nmap, yes the windows port works well.
Is it a graphical interface? Or, just a text console?
GUI for NMAP:
<https://nmap.org/zenmap>
I'll look into this one.
Norton considers any port scanner to be a hacker tool and therefore
blocks the installation. Just turn Norton off (see below). You
should also add Angry IP Scanner to Norton's exclusion list.
Ahh. So Angry IP is probably OK. I did wonder.
"AI Overview
To temporarily turn off Norton Antivirus on Windows or Mac,
right-click the yellow Norton icon in the system tray/menu bar and
select Disable Auto-Protect and Disable Smart Firewall. Select a
duration, such as 15 minutes or until system restart, to allow for >>temporary tasks like software installation."
Yep. I've seen that button.
Thanks,
Joe
Follow-up report at bottom.
On Fri, 10 Apr 2026 10:58:50 -0400, joegwinn@comcast.net wrote:
On Thu, 09 Apr 2026 19:29:40 -0700, Jeff Liebermann <jeffl@cruzio.com> >>wrote:
On Thu, 9 Apr 2026 17:17:30 -0700, Don Y <blockedofcourse@foo.invalid> >>>wrote:
On 4/9/2026 3:39 PM, Martin Rid wrote:
Nmap, yes the windows port works well.
Is it a graphical interface? Or, just a text console?
GUI for NMAP:
<https://nmap.org/zenmap>
I'll look into this one.
Norton considers any port scanner to be a hacker tool and therefore >>>blocks the installation. Just turn Norton off (see below). You
should also add Angry IP Scanner to Norton's exclusion list.
Ahh. So Angry IP is probably OK. I did wonder.
"AI Overview
To temporarily turn off Norton Antivirus on Windows or Mac,
right-click the yellow Norton icon in the system tray/menu bar and
select Disable Auto-Protect and Disable Smart Firewall. Select a >>>duration, such as 15 minutes or until system restart, to allow for >>>temporary tasks like software installation."
Yep. I've seen that button.
Thanks,
Joe
What probably happened was that I clicked on the wrong "download"
button, and did get something evil, which Norton promptly shot.
What worked was to sign into GitHub and download from there. Probably
didn't need to sign in, actually. Even so, there were all manner of
ads and other decoys intruding from all sides. I did hit one that
downloaded an EXE and urgently insisted that I click on it Right Now!
Umm, No! Deleted the EXE and got the download straight from GitHub.
Smooth, and no complaints from Norton.
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