DCHP works but I cannot ping ANOTHER host

Hi,

I am working here on a windows XP home sp2 edition to solve a networking problem. I have DHCP server and internet router. When starting up Windows XP the network card sends a DHCP request and gets its address correctly which is 172.23.56.25/24. With the windows firewall which is actually disabled I am trying to ping another host in the same subnet without success. I can ping my own network address and the localhost but no other hosts where I am shure that they respond to ICMP. When starting up with a knoppix Linux there is no problem with the network card. I have also tried another network card but without success. Could you help me on this ?
 
fellerjAsked:
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Jay_Jay70Connect With a Mentor Commented:
damn zone alarm! i hate it!
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UnifiedITCommented:
Are you pinging the other machine by IP address or host name?  
If Host name, you may have a WINS or DNS issue

If by address, verify that the firewall is off on both machines (not just one) and also verify that there is no secondary firewall or antivirus software that may be blocking the actual ping
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fellerjAuthor Commented:
Thanks for the reply,

I am doing  ping to host 172.23.56.29 and I know that this host replies to ICMP messages. I tried with another host with success. I have uninstalled the antivirus software and all firewalls were already deaktivated.
It really should work, but it doesn't.
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fellerjAuthor Commented:
I have installed ethereal and I saw that only arp request are sent when doing the ping. The arp reply is even correctly but thats all, no other traffic is going out or in.
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fellerjAuthor Commented:
The funiest thing is that DHCP request are working with UDP packets (transport layer).
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Jay_Jay70Commented:
you may have an issue within your TCPIP stack

http://www.softpedia.com/progDownload/WinSock-XP-Fix-Download-7144.html
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UnifiedITCommented:
Try a tracert and see where the last hop is
example  tracert www.yahoo.com or tracert 172.23.56.29  This will tell you if you are even getting out of your machine.
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fellerjAuthor Commented:
I have tried the winsock XP fix but still the same sympton. When doing tracrert 172.23.56.29 I get a host not reahable message.
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UnifiedITCommented:
Try removing TCP/IP and the Ethernet card.  Reboot then reinstall everything
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fellerjAuthor Commented:
It looks like it is a zonealarm problem.......
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UnifiedITCommented:
that will do...glad you fixed it
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