LanScan for Windows?

Apr 09, 2026 Last reply: 3 months ago 10 Replies

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?



Joe


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)

No idea. 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?"

+1 for nmap ( 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. 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. John

Nmap, yes the windows port works well.

Cheers

I guess it depends on whether your goal is discovery, security, etc.

The EMCO tool is good because it provides an accounting of all (Windows) hosts on the network -- including the applications installed, hardware they're running on, etc.

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Of course, is doesn't do s*it for non-windows hosts (beyond pings, etc.)

All of these things assume "traditional" hosts. E.g., my prototypes don't run ICMP, ARP, IP, TCP, UDP, etc. so I've had to build my own tools.

Is it a graphical interface? Or, just a text console?

GUI for NMAP:

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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."

I'll look into this one.

Ahh. So Angry IP is probably OK. I did wonder.

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.

I'm now learning how to use Angry IP.

Joe

Below I quote a webpage about Norton by me from yesterday. This webpage reports a tendency of Norton to publish unfounded alarms. This webpage gives examples, none of which is about a port scanner. So decide for yourselves whether or not you shall read it.

This website also has screenshots, which are not in the USENET.

Joe Gwinn wrote: |----------------------------------------------------------------------| |"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. | | | |I'm now learning how to use Angry IP. | | | |Joe" | |----------------------------------------------------------------------|

Joe Gwinn wrote: |---------------------------------------------------------------------| |"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. | | | |[. . .] | | | |And, is Norton all wet, or has Angry been infected on GitHub?" | |---------------------------------------------------------------------|

Jeff Liebermann snipped-for-privacy@cruzio.com wrote: |--------------------------------------------------------------------| |"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. | | | |[. . .]" | |--------------------------------------------------------------------|

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says:

" Unfounded Alarms by Norton

Good things by Norton

Each computer on which I run Norton software (by Gen Digital Inc.) never has a virus (or a trojan or a worm), so far as I detect.

Norton runs a good virtual private network.

Norton identified a big size of unneeded files. However, Norton eagerly attempts to encourage deletings files which I myself prefer to keep. As for the files that it did encourage me to delete, I could had found them myself.

Unfounded alarms by Norton

Websites

I allow cookies, so Norton often publishes unfounded alarms against websites (e.g. of organisations of which I am a client) by warnings me that they track me. Of course they track me!

Examples of websites which Norton dared to warn me about via unfounded alarms include a website of courts' whereby I prosecute; and a shop which sells me many envelopes and pages which I post to courts.

Cookies are not the only things that cause Norton to emit unfounded alarms about websites. For examples, Norton likes to "Quarantine" completely harmless downloaded files. For example this PDF file from the International Court of Justice which "was" not ever "infected with" "Malware": International Court of Justice dangerous according to Norton2 "False positive I downloaded this Adobe-PDF file a year ago from the International Court of Justice. You suddenly claimed for the first time on 25th November 2025 that it is malware. I.e. Norton enacts Norton's typical scaremongering for money." say I myself to Norton without a received response since a 25^th day of November 2025. Norton waited 22 months to raise an unfounded alarm for the 1st time against a particular file International Court of Justice dangerous according to Norton

Norton does not run a profiler

Norton does not run a profiler, but it often falsely professes:

"These issues are slowing down your Windows PC

[. . .] Apps that Microsoft Office slow you Professional Plus 2016 - down: en-us" whereas this computer and I do not use Microsoft Office!!! 95 percent idle but Norton pretends unused Microsoft Office slows a LibreOffice-Writer computer on 16th August 2025

Norton dares to show such unfounded alarms about software which I do not even use even when this computer is 95% and 94% idle!!! 94 percent idle but Norton pretends unused Microsoft Office slows a LibreOffice-Writer computer on 28th August 2025

(This computer does actually have Microsoft Office (which is left behind by a previous owner). I still never (intentionally) click on an option to accept its licence. I use inter alia LibreOffice Writer; TeX; and various text editors. I was going to make and show a screenshot of Microsoft Office still not proceeding past the accept-its-licence stage but I possibly accidentally clicked on it after many years, apparently few weeks before April 2026. So I made a different screenshot instead on a 12^th day of April of the Year that is called 2026 A.D. This screenshot shows that I use LibreOffice Writer whereas somehow Microsoft Word reports that a file dated this 16^th day of October 2024 was "modified" on a 14^th day of November 2024 despite Microsoft-Windows Explorer clearly professing that it was "Created:"; "Modified"; and "Accessed:" all on this 16^th day of October 2024! So whether we are looking at a bug by Microsoft Word or by Microsoft-Windows Explorer, we are clearly looking at a bug by Microsoft! Microsoft does not stop at a single bug. This same screenshot shows Microsoft Word professing that that document is the only "Recent" document in 2026 whilst Microsoft-Windows Explorer clearly professed that it was "Accessed:" in 2024. The earliest that I might have actually (accidentally) clicked on any accept-a-Microsoft-Word-licence option is late 2025. Many other problems by Microsoft are easily found.) 3 years plus 7 months using Norton where MS Office is installed but not run

Seunadh

Is ionann leantainn lèirsinne de fhaidhle seo agus deimhinneachadh chum as gu'n geall sibh fianaisean a thabhairt airson mo fhòrlaidh tro chàintean a-staigh taigh-òsta aig bàraichean iarainn." (S.

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fuer Kontaktdaten!)

It turns out that the intruding ads and decoys are an abuse of Google Ads. It's quite striking. I have not seen anything like this on MacOS.

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Joe

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