About LAN sharing You can log in with admin empty password to access!

I guess it's a clone account, and someone left a backdoor

See if you can find it in Computer Management - > Local Users and Groups - > Users.

If you can't see it, open the registry (run->regedit) hkey local machine->sam->sam Right-click Permissions Add the current user permissions to refresh it You can proceed: domains->account->users->names You can see all users in the system...

Dizzy, I haven't seen this before!

You're visiting locally, right? Remote null passwords are impossible to access! If so, it means that there is a vulnerability in your system

Group Policy: Run ->> Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options.

Account: Local accounts with blank passwords are only allowed to log in to the console.

Well, it is estimated that it is a hidden user, and after you change the password with "net user admin password" for this user in cmd, you should be able to see this user, and then delete him.

Can you see it in the registry? If you can't see it, you'd better use the Super Patrol to check it, it's likely that rootkit technology is used.

What the 1st floor said should be correct Get it, get points, and leave.

Add the admin account to the machine you want to log into.

You open: Control Panel - Administrative Tools - Local Security Policies.

Tap again: Local Policies - Security Options Drag to the bottom and find: Account: Local account with blank password is only allowed to log in to the console, set to Enabled, and Accounts: Guest Account status is set to Deactivated.

Then set the user name you are using, which is generally default to administrator or a new name when you install the system, and set the user password through the control panel - user account.

Xinjian a notepad Open it and paste these in.

echo off

echo.echo.Description.

echo --

echo 1, allow SAM accounts and shared anonymous enumerations (allowed by the original system, disabled by default in this system).

echo 2, if the password of the local account is empty, other machines are allowed to access the machine.

Echo 3, Windows Firewall: Allows file and printer sharing.

echo 4. Sharing mode: Local users authenticate with their own.

echo 5, guest account: Not enabled.

echo --

echo.Echo uses this type of sharing, and you must enter the correct username and password to access the unit.

echo.No matter which sharing method is used, sharing is only convenient for internal use, and when you use a router to surf the Internet, the Echo external network cannot access your machine, so you don't have to worry about being invaded if you share it. All you need to remember is stand-alone dialing.

When your Echo surfs the Internet, don't turn on sharing.

echo --

echo.pauseregedit s to enable LAN sharing (to access the machine, you need to fill in the username and password).reg

net user guest /active:no

cls@ echo.

echo --

The echo operation is complete.

The Echo doesn't need to be rebooted, and other devices can now access the unit.

echo.The default sharing for partitions of the Echo drive is still not turned on. If you need to open it, echo Please go to this directory to find the registry file and double-click to import it.

echo --

echo.echo Frequently Asked Questions:

echo After the above processing, access the machine, if it is still directly in, there is no prompt to enter the account.

echo number and password dialog, that's because the other computer's account name is the same as the local account name (e.g., double.

The echo party is administrator), and the unit has no password. You should change the name of your local account or add a password.

echo This way, unauthorized users can't access the resources you share.

echo --

pause and then save it, change the suffix to cmd and run it.

1.Set your guest user password.

2.If the other party chooses to save the password, they will not be prompted to enter the password. This control is no longer yours unless you change your password frequently.

I'll give you a tool to do it. But you have to give points.

You can set the guest password of the user account.

If the other party has enabled default sharing, please double-click the online neighbor icon on the desktop, enter the IP address of the other party's computer C$ in the address bar, and then enter the username and password of the other party's administrator to log in.

If it cannot be opened normally, you can first enter the IP address of the other party's computer in the address bar, enter the username and password to access it once, and then add C$ after the IP address again, which can often be accessed successfully.

However, note that this requires the other administrator to have a password, otherwise XP will block access by default.

Just set the other party's computer to the following settings.

1.First of all, the other party should open the guest

Click Desktop My Computer - Right Click - Manage - Local Users and Groups - Users - Selected"guest"attributes, put"The account has been deactivated"The front hook is removed.

2.Start - Run - Security Settings - Local Policies - Security Options - Network Access: Local Users and Shared Security Mode - Properties - Change"Classic - Local users authenticate with themselves"Are you sure.

3.For example, if you want to access someone else's drive, you have a hidden share.

Open the desktop My Computer and type in the address bar.

Enter. Then prompt to enter the username and password, and enter the administrator password: blank OK.

All use dos commands, why don't you try it:

My Computer - Right-click - Map Network Drives - Arbitrarily select the drive letter Write in the directory:

Click on the Use a different username below Enter the username and password you know for that computer, then press Done, and look down

Use the command net use""/user:"administrator"If the prompt can't find the path, it is likely to be intercepted by XP's firewall, and now XP's built-in firewall is started by default, so this method is invalid many times. Try spilling or something.

What are the tips for you to fail when using net use?

The default sharing within the XP LAN does not require a username and password, and can be accessed directly without entering a username and password.

net use computer b admin$ user: computer b administrator*

Pay attention to the spaces.

Hehe, this one is very simple! When you log in, it is the username on the server, not the username on your own computer, so if you want to log in, you can set the user who needs to log in on the server!!

There is a tweak UI in the control panel of the computer, click on, there is an automatic login inside, hit the pick, and write administrator on the back OK.

administrator has the highest privileges.

You can set your other user groups such as everyone permissions and you're good to go.

There is a problem with your local other user permission settings.

You see if all of their permissions are inherited.

For LAN sharing, if your password is empty, then you need to modify the Group Policy "Allow access with an empty password".

It is generally recommended to do this:

Add the visitor's account and password to log in to Windows on the server, and the password is not empty.

In general, it is not recommended to use the administrator user on a daily basis.

Go to the policy group and open the security options, and there are settings for shared passwords, which can be set to blank or any password you want.

After file sharing, you need to open a guest account. Note that in the local connection properties, you should check the file sharing of the Microsoft network with the printer.

Try turning off "Password Protected Sharing" in a network share by following the steps below:

Open the Control Panel;

Go to Control Panel, Network & Internet Network & Sharing Center, Advanced Sharing Settings;

Check Turn off password-protected sharing, and then click Save changes.

I checked some of the statements on the Internet, in fact, as a novice, there is a relatively simple and practical method, I have tried it, here for you to "share"!

Open the "Search" of computer A, - file or folder "Enter: "Local Security Settings" - open the "Local Policy" in the searched "Security Settings" - Security Options" - double-click "Account: Local accounts with blank passwords are only allowed to log in to the console" - Properties - click "Disabled", confirm, and you can!

If you want to access a shared folder, you need to set the NTFS permission in the Security tab to allow access to the Everyone or Guests group!

Your network card needs to be bound to the service "File and Printer Sharing", that's all, nothing else!

In the runtime, enter and start "Local Security Settings" and "User Rights Assignment" to delete the guest user in "Deny access to this computer from the network".

Enter "Local Security Settings" "Security Options" "Network Access: Shared and Security Mode for Local Accounts" in Run to change "Classic" to "Guest Only".

Enter "Local Security Settings" and "User Rights Assignment" to delete the user in "Reject as Server and Batch Job".

It takes effect after the restart.

In Group Policy, select Use a blank password to log in.

Just turn on the guest account (guest) and you're good to go.