To ping or not to ping

  • Thread starter Thread starter nobi
  • Start date Start date
N

nobi

Here's a new one for me...
I am working in a domain with 8 remote subnets. Just
realized that I cannot ping any of the hosts or routers
on romote subnets from hosts in the subnet where I am
located. My domain controller can successfully ping any
router in the domain and I can successfully ping IP
addresses for google, yahoo and Microsoft from any host
here.I can also successfully ping the internal and
external NIC on my domain controller and firewall. Hmmm.
Any thoughts?
Thanks
 
skin the problem. Start with IPs only. Can you ping by address to all IPs
needed? If not, don't worry about dns, ad, etc - as you have a network
routing or firewall issue. I would start at the firewall to see if icmp is
being blocked for you. Or look at netmon at different locations (behind, in
front of the firewall) to see what is happening. If you can ping by IP,
then the issue may be dns. It would help to see some output of the ping
command (or other commands). Check back.
 
First off, what IP address are you pinging for Microsoft? Microsoft blocks
ICMP to their web servers so you cannot ping them.

To troubleshoot your issue start inside and work out. What device is your
router? Are your clients configured to use this device as their default
gateway? Can the clients ping it? What is the default gateway's next hop?
Can the clients ping it?

--

Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.
 
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