ping request could not find host

April 9, 2012 at 23:14:45
Specs: Windows 2003, 2.9 GHz
I have 2 NIC installed on windows server 2003, one connected to switch (LAN) to server 20 pc's , and the other NIC connected directly to router to get internet. the problem is ping from server it self or any client cant resolve www.google.com. which return this error "ping request could not find host"

my configuration is:

1. NIC cards
LAN: ip=194.0.0.2, mask=255.255.255.0
WAN: ip=10.22.0.102, mask=255.255.0.0, gateway=10.22.0.1
where 10.22.0.1 is router

2. routing and remote access
LAN: private interface
WA: public interface

3. dnsmgmnt
interfaces listen on: all IP
forward and reverse lookup has computers ips

4. ISA server
ICMP access rule from internal to localhost
firewall policy rules:
* server to net: from lan,wan to external
* computers set: from my 20 pc's to external


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#1
April 10, 2012 at 00:06:12
You don't mention the DNS server that the clients and server are pointing to. Is this the Windows server? If so it should certainly reolve DNS requests for zones that it manages. If even that doesn't happen then you have some real problem. If it reolves local addresses, but not remote ones, then you haven't set up forwarding properly on your DNS server.

So, what is your DNS setup? What results do you get from nslookup requests (both on the sever and on the clients) for local and remote addresses? How is the DNS server configured wrt forwarding? And do the logs on the server tell you anything?


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#2
April 10, 2012 at 00:35:54
the server it self is DNS server -which holds 2 NIC-

nslookup:
on server & clients:
default server: myserver.com
address: 194.0.0.2


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#3
April 10, 2012 at 05:04:59
I understand you to say that local queries resolve but not remote ones. This means that you haven't configured a forwarder for your DNS server. Configure it to look at your ISP's DNS server for queries that it cannot resolve fro m the zones it hosts.

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#4
April 17, 2012 at 00:31:37
Thanx for your helpful comments,

now i configure the DNS correctly, and nslookup works fine on server and clients
but the problem seems to be in ISA TMG, i got this log error when i use monitor tool:

Denied Connection MY-SERVER 4/17/2012 8:23:18 PM
Log type: Firewall service
Status:
Rule:
Source: Internal (194.0.0.3)
Destination: External (224.0.0.22)
Protocol: Unidentified IP Traffic (IGMP:0)


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