network connection issue

I have a test network that consists of:

3 computers connetec through D-Link Switch, they are all static IP

Computer 1 TCP/IP
Subnet mask
Default Gateway:
Preferred DNS

Computer 2 TCP/IP
Subnet mask
Default Gateway:
Preferred DNS :

Computer 3 TCP/IP
Subnet mask
Default Gateway:
Preferred DNS

Note that is an IP of DSL router so that 3 computers connect to internet, in fact they all connect to internet.

From computer 1 I can ping ,, but NOT
From computer 2 I can ping them all ,, ,
From computer 3 I can ping ,, but NOT

I would like to have all the computers able to ping each other.
Any idea?


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ajortolaniConnect With a Mentor Commented:
The time clock shouldn't affect network connectivity as pertained to internet connection, however if the computers are on a domain they need to have the same time settings as the domain controller or else they can't log onto the domain. This could potentially cause the controller not to lease the address to the workstations. Kind of weird but possible.

Good luck
zephyr_hex (Megan)Connect With a Mentor DeveloperCommented:
what is the status of the firewall on each computer?
b0lsc0ttConnect With a Mentor IT ManagerCommented:

Actually it seems like it is only one computer that does not respond to the ping (Computer 2 -  Use Zephyr's comments but I would especially look at that computer's firewall program or settings.  Give us specifics of that computer if you need details (OS and firewall programs).

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Chris_PicciottoConnect With a Mentor Commented:
Turn off the windows firewall and any other 3rd party program that might block PINGS on computer 3. THen try.
ttist25Connect With a Mentor Commented:
I agree.  It's most likely a firewall issue.  

But, why are you pointing to .4 for DNS?
Is .4 a domain controller?
yeah like everyone says computer 2; probably has a firewall enabled.  WinXP has a builtin firewall that is enabled by default.  If that this the case

Go to START > Control Panel > Network Connections > your active NIC > Properties > Advance > Windows Firewall > Settings >* Advance, choose "Allow Incoming ECHO Request".  Click OK, OK, OK, etc until you are back at the desktop

*Note in the General Tab radio button for Firewall is ON by default.

Hope it helps,

jskfanAuthor Commented:
I found the solution for the issue, it was simple but weird.

the computer that has had the time clock different than other computers. I just adjusted it and now all computers can ping each other.

How I did pay attention to the clock?? because I woke up too early and saw in my wall clock the time was 3:xx am  and on the computer 1:xx am .

ECNSSMTConnect With a Mentor Commented:
sounds good to me; but just realize that the clock does nothing more than keep time; there is no corrrelation between time and network, except "I don't like the idea of downloading a file taking forever".

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