Missing Computersd

[Guest]

Just downloaded an IP Scanner program and ran it on our network. It is
missing at least a third of the computers I know are up and running on the
network. Ran it several times with the same results. Anyone have an
explanation on why it is missing computers or are there settings I should
change from the default values?
Is this anything to do with subnets or IP routing ?

Any suggestions ?

 

[Chuck]

Just downloaded an IP Scanner program and ran it on our network. It is
missing at least a third of the computers I know are up and running on the
network. Ran it several times with the same results. Anyone have an
explanation on why it is missing computers or are there settings I should
change from the default values?
Is this anything to do with subnets or IP routing ?

Any suggestions ?

I use Angry IP Scanner and SoftPerfect Network Scanner (both free), and check
the two against each other. What scanner are you using? Try one or both of
these.
<http://nitecruzr.blogspot.com/2005/05/essential-tools-for-desktop-and.html#AngryZiber>
http://nitecruzr.blogspot.com/2005/05/essential-tools-for-desktop-and.html#AngryZiber
<http://nitecruzr.blogspot.com/2005/05/essential-tools-for-desktop-and.html#SoftPerfectResearch>
http://nitecruzr.blogspot.com/2005/05/essential-tools-for-desktop-and.html#SoftPerfectResearch

Any idea what's different about any of the computers that aren't detected?What
if you manually ping them - any difference there?

 

[Lanwench [MVP - Exchange]]

In

Just downloaded an IP Scanner program and ran it on our network. It is
missing at least a third of the computers I know are up and running
on the network. Ran it several times with the same results. Anyone
have an explanation on why it is missing computers or are there
settings I should change from the default values?
Is this anything to do with subnets or IP routing ?

Any suggestions ?

If you have the Windows firewalls enabled (or third party fw apps running)
on these computers, it's likely that you don't have the requisite exceptions
set.