Simple scanner for IP addresses on local network

[ivan]

Hi All,

A friend asked me if there was an OS/2 equivalent to the windows Netscan by SoftPerfect.  That is a GUI in which you put the start  and end IP addresses hit start scan and it scans the network and lists all IP and MAC addresses it finds along with a lot of other information if you want it.  He uses this at the moment on a win XP VM under VirtualPC for OS/2 but would like something that gives the information without having to start the VM. 

Netscan does not run under Odin, even when you copy over the missing DLLs from win XP. 

Is there such a program for OS/2 or could something be cobbled together using some scripts?

[David McKenna]

 General Network Utilities http://en.ecomstation.ru/projects/gnu/ has an ARPScan function that does what you describe.

[Andi B.]

Have you tried LanScan? I've it on my disk but the link mentioned in the inf http://ecomstation.ru/lanscan/ does not work anymore.

A very simple IP scanner is f.i. ping 192.168.1.255 But especially Win machines do not respond some times.

[ivan]

Thanks David but since there appears to be no way of downloading anything to see if it does what he wants I can't say that it would do the job.  We use ARP to check what has used our servers but all it does is read the local arp table , it does not scan the network for IPs out there that have not 'called in'.

Andi, I think they have rolled that into the GNU that David mentioned.  Ping does assume you know the IP address before you can use it - if that is unknown then you can't.

The reason my friend is looking for an OS/2 replacement for Netscan is that he uses it to check if and when those renting his holiday apartments are on the network - those he has given access codes to are no problem it is those that try and hack the system he is concerned about.  With Netscan giving the MAC address he is able to block those non authorised users (he had one guy a couple of years ago that brought the network to it's knees by downloading so many torrents at once that no one else could get on to the internet).

[Andi B.]

Ping does assume you know the IP address before you can use it - if that is unknown then you can't.

Not if you use the broadcast address. AFAIR .255 is broadcast. My machines all answers on such a ping. .0 seems to work similar.

[David McKenna]

http://ecomstation.ru/projects/gnu/download/GNU-20080903.wpi

[ivan]

Andi, I tried that last night and only got our managed switch (xxx.xxx.xxx.0) or our WAN modem (xxx.xxx.xxx.255).

Thanks David.  I passed that on to him and just got an e-mail in which he says it only shows about half of what is on the network compared to the results he gets with Netscan.

He also sent me the URL for Angry IP Scanner which appears to be a java app but there is no generic jar file and the linux one does not work with anything I have here.

Thanks for the help.

[Martin Iturbide]

Hi

It seems to me that IP Angry Scanner requires SWT/Eclipse libraries, and seems to be compiled with OpenJDK 7 (we only have to 6).

java -jar ipscan-mac-3.3.3.jar
java.lang.UnsatisfiedLinkError: Cannot load 64-bit SWT libraries on 32-bit JVM
        at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
        at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
        at org.eclipse.swt.internal.C.<clinit>(Unknown Source)
        at org.eclipse.swt.widgets.Display.<clinit>(Unknown Source)
        at net.azib.ipscan.Main.main(Main.java:52)

Regards

[ivan]

Thanks Martin, that would explain why it didn't work with anything I have here.

[dbanet]

I just don't quite get, why do you use SoftPerfect NetScan (which I hear the very first time of), which seems to be Windows-only, instead of nmap?
Why doesn't nmap -sP 192.168.0.0/16 or like fit your needs?

[ivan]

That might be fine but I can't find an OS/2 port of <b>nmap.</b>  Do you have one you can tell me where to download from?

My friend used Netscan because he used to use windows and when I set him up with OS/2 we used a VM to run winXP for those programs that weren't available on OS/2 at the time.  Now, Netscan is the only program we haven't been able to find a native OS/2 program, or port, for.

[Dave Yeo]

I'm pretty sure there is an old port of nmap (or similar) around but I've been trying to remember about it since this thread started with no luck 

[dbanet]

ivan, Dave,

nmap-2.54beta30-os2.txt
nmap-2.54beta30-os2.zip
ipspy140.zip
lpcap04a.zip

[Ian B Manners]

I occasionally use Portscanner (Portscanner 1.8 1997,1998 Ralf Christen)

Package is called prtscn18.zip  http://www.os2site.com/sw/internet/misc/prtscn18.zip