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home network problem with MAC and Windows PCs

I'm working on a simple home network setup thru a netgear router.  Two of the PCs are running XP Home Edition and the 3rd PC is running OS X 10.4.10.

I can ping the router from each Windows PC and I can also ping the IP address for the MacIntosh from each Windows PC.  However, I cannot ping the Windows PCs thru the network?  Something is blocking access to the Windows PCs, which I think has something to do with the MacIntosh or the router????

I'm not a MAC guy and not sure how to troubleshoot this.

Can anyone offer some ideas on how to troubleshoot this home network issue?

Please let me know what additional information I can provide?

Thanks for any help.
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-Dman100-
Asked:
-Dman100-
  • 2
2 Solutions
 
the_b1ackfoxCommented:
Your windows firewall is probably on.  Modify it with an exception so ping can come in.
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Eoin OSullivanConsultantCommented:
If you can ping the router and mac from the PCs but not vice versa .. then the problem lies with the Windows PCs .. NOT the Mac or Router.

Are you using XP Home or Professional?
Have you disabled ALL firewalls  i.e. Windows built-in, and any 3rd party such as Zone Alarm or Norton?
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strungCommented:
Try flushing the DNS cache on the Mac by opening terminal.app (found in the \applications\utility folder) and typing:

sudo lookupd -flushcache

followed by return.
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strungCommented:
Ignore my last message which should have been posted to a different thread.
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