- In Explorer, click Tools
- Click Folder Options
- Click the View tab,
- Uncheck Automatically Search for Network Folders and Printers in Advanced settings list.
If there are NT4.0 or any other pre-Windows 2000 PCs on the LAN, XP will transmit your password to the pre-Windows 2000 PCs during its share and print search. It transmits the LM hash which is significantly weaker than XP or Windows 2000 hashes. In order to protect the LM hash, XP has a registry value HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\NoLMHash which if set to 1 will prevent XP or Windows 2000 from generating the LM hash. pwdump will not be able to acquire the LM hash, which is a good thing.
Saddly, NoLMHash does not affect LM authentication. Even if NoLMHash has been set, XP will still transmit the LM hash to a NT4.0 machine when My Network Places is clicked.
There are tools to capture LM hashes on the LAN, among others : LMscoop.