finding all ip addresses on a network

[bagellad]

Not sure if this has been on here yet.. But I found this baby really helpful today..

do this in dos

FOR /L %i IN (1,1,254) DO ping -n 1 192.168.0.%i | FIND /i "Reply">> c:\ipaddresses.txt

http://www.petri.co.il/quickly_find_used_ip_addresses.htm

 

[Thedog]

Whats wrong with "arp -a" in cmd?

 

[Martyn]

That string will ping the range and write to a file but that won't necessarily pick up all addresses. For instance some printer servers, routers and computers with firewalls on won't answer the ping.

 

[Deleted member 13571]

That string will ping the range and write to a file but that won't necessarily pick up all addresses. For instance some printer servers, routers and computers with firewalls on won't answer the ping.

nmap?

That's what I would use. There are a few other tools that might be useful.

 

[MobileTechie]

This free tool is great for finding hosts and reporting useful info back. It just uses WMI.

http://www.softpedia.com/progDownload/WMI-Asset-Logger-Download-64257.html

 

[WASH PC]

angry ip scanner
http://www.angryip.org/w/Home

 

[Martyn]

angry ip scanner
http://www.angryip.org/w/Home

I've not used any of these programs but as I remember if the remote pc doesn't answer(ICMP) then you don't know it's there and therefore cannot log it's ip address.

Scenario: you go into a big print shop with many PCs, Macs, Plotters with own controllers, firewalls on etc and the customer wants you to add a new computer/printer to the network on a fixed ip address, how can these programs gather the information when some devices don't answer? Sorry if I'm missing something but this is something I have come across over many years and the only way I used to do it was manually log the devices if it wasn't already done.\

Edit: ok just tested it and yes it is restricted by ICMP, nice little program though as long as people realise the limitations.

 

[MobileTechie]

I found Spiceworks to be a pain the arse to say the least. I'm sure it works for some organisations but it didn't for the place I worked at. It's major overkill for finding a few IP addresses - it's a full on asset management and network monitoring tool designed for domain based corporations.

BTW I forgot to say I thought the original tip was pretty cool. Thanks for that.

 

[hext]

angry ip scanner
http://www.angryip.org/w/Home

another vote for angry IP

simple, robust and been using it for years and years...

 

[goldmercury]

+1 for angry IP scanner