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Unable to ping outside network

By kashmeir63 ·
Hi,
I have a windows nt4.0 network. I have a windows 2000 server as our DNS.I'm unable to ping outside the network whether by name or ip address example: www.aol.com. What would be the reason that I would not be able to do this? I can however ping w/no problem from the server that the users connect to, to get to the internet
I do have internet access and I have no problem w/that. Internally I can ping by name and by ip address.
Any help would be appreciated.

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Unable to ping outside network

by timwalsh In reply to Unable to ping outside ne ...

What are the results of your ping attempts?

Do they get timed out, or do you get "host unreachable?"

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Unable to ping outside network

by Joseph Moore In reply to Unable to ping outside ne ...

Also, try doing a TRACERT to an external IP address. From the Command Prompt type in:

TRACERT 216.109.125.73

And hit Enter. That will do a traceroute to www.yahoo.com.

Let us know the results.

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Unable to ping outside network

by MoonDoggie In reply to Unable to ping outside ne ...

Could be a number of things.

1. aol.com doesn't respond to pings, alont of servers don't these days. I just pinged and got this:

C>ping aol.com

Pinging aol.com [64.12.187.24] with 32 bytes of data:

Request timed out.
Request timed out.
Reply from 172.20.148.54: Destination net unreachable.
Reply from 172.20.148.50: Destination net unreachable.

Ping statistics for 64.12.187.24:
Packets: Sent = 4, Received = 2, Lost = 2 (50% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

So I can't ping it either, get on a machine you know that has an open net connection and try to ping something that will respond.
sympatico.ca will respond to pings.

2. You're browser is using another box as a proxy server so you think you're on the net surfing away as happy as can be, but just can ping anything you're looking at. Check the connection settings in your browser and verify you have the proper gateway and netmask.


MoonDoggie

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Unable to ping outside network

by curlergirl In reply to Unable to ping outside ne ...

If you are connecting to the Internet through a NAT router or a proxy server, it is highly likely that the router or proxy server is preventing ICMP packets from passing between the internal network and the Internet. This would prevent you from using ping, tracert, etc., between the internal workstations and the Internet, even though you have Internet access and name resolution. This is perfectly normal and is a common configuration for security reasons. Check w/whoever is responsible for thispart of your network and see if that is the case. If so, it's perfectly normal. Hope this helps!

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Unable to ping outside network

by ctmoore1998 In reply to Unable to ping outside ne ...

By using the DNS of the 2000 server means that the IP for DNS is pointed at the 2000 server i.e. 192.168.0.xxx What configuration have you done to the 2000 DNS by default it is a root DNS server which means if its not listed in the 2000 DNS it doesn't exist. For most companies they don't want their DNS server to be a 'ROOT' DNS if they want to access the internet. What you do is open the DNS manager, if DNS is currently configed as a 'root' DNS you should see 2 zones a '.' zone and a zone forwhatever your domain is. (Unless you manually configured DNS vs letting the wizard do it) * Note if you don't want the 2000 domain propragated to internet make sure your 2000 domain started with domain ie domain.company.com when you created the AD. The next step once DNS shows both zones is to delete the root '.' zone Once this is deleted (and you can't remake the root zone without reinstalling windows from scratch) right mouse on the domain.company.com zone choose properties click on the forwarders tab enter the IP address for your ISP DNS servers now if its not listed in local DNS it will pass on to the ISP DNS (ensure that the default gateway for your server is pointed at the router/firewall that accesses the internet.

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