Very weird pinging and access problem with XP system ???

[Cribbinator]

Hello,

Need your help on this one. I have a laptop that has Windows XP PRO installed on it. Currently from the laptop I can ping out to anything and even map network drives with not problems. The only problem is that no machine on the same subnet can ping my XP laptop or map a share. I have uninstalled the built in network card, tried using a wireless card, installed a PCMCIA card, and all of them experience the same problem which points to the system being the culprit. I have verified that theh Windows XP firewall is turned off for all connections and that there are no abnormal services running in the task manager. I also went extreme as running the NetShell command from teh command prompt to reset the network registry settings. One thing I did notice is that right after I login to the system the machine is pingable for about 15 pings and then once the system is fully loaded it drops all pings. Any ideas ? I've about had it with this problem and am getting ready to reload the OS, but being a Network Admin I want to get to the root of the problem so I know the fix if this happens again. Any help or info would be appreciated.

Thanks!



JC

 

[bcastner]

PC-Illan as antivirus software or other antivirus software? Did you have a firewall like ZoneAlarm installed and just disabled through the task bar icon and not remove or disable the service running through Task Manager? Dead dog certain no firewall of any kind is running, not just disabled? Because your problem description is exactly one of a firewall, whether hidden behind an antivirus program or just "disabled" from the task bar but not stopped with an MSCONFIG clean boot with the firewall an issue.

Lets start this way as you have installed three network adapters by your description:

1. Boot to Safe Mode. Logon as local Administrator. Device Manager, View, Show all hidden devices, and remove everything but the "mini" port devices.

2. Boot to normal mode. Download and run this:

http://members.shaw.ca/techcd/VB_Projects/WinsockFix.zip

3. After the reboot, set your the built-in adapter for DHCP or static or whatever is best for you. Can you see yourself in Network Places?

If not, make certain you are not logging in with an empty or blank password, or "Auto logging in" or clicking a "Welcome" display as Administrator with an empty password.

Add a new user with Administrator priviliges, a full username and full password. Logon as the new user.

4. Share something. A folder, a printer, something.

You should be listed now if:

. Your workgroup name is identical to everyone else;
. Your machinename or computer ID is unique;
. You have a non-empty password;
. Netbios over TCP/IP is enabled for the laptop in TCP/IP properties;
. You are sharing something

Please advise.
Bill

 

[Cribbinator]

Hello Bill,

Thanks for taking the time to post a reply. I have no firewalls installed and or running in the background. I made sure the Windows XP firewall was completely turned off. What is weird is that I can see the incoming packets but I cannot see any replies go out. I have editied routes using the Command Line based route commands and changing metrics but nothing helps. I just haven't ever seen a computer act like this unless there is a firewall running. I performed the steps you mentioned above (thanks again for the detail but I still have the same problem. Like I said in my original post, being a Network Administrator I hate throwing in the towel and giving up but I can't think of anything else. My only guess is that my laptop has some kind of virus or permanent damage from an older virus; that is my best guess for now. Can you think of any other possibilities ? I plan to refresh the system on Monday so I'll see if I can think of anything else or if you reply with any other ideas. Thanks again for the detailed information.

Regards,

James

 

[Andyleates]

Last time I saw a problem like this it was the laptop users vpn client software, that was also bound to the internal NIC.

Unbound that and all way well!

Andy Leates MCSE CCNA MCP+I