Improve FSO security under Windows 2003

ASP provides powerful file system access, which can read, write, copy, delete, rename, etc. any file on the server hard disk, which is safe for the school website. Bring a huge threat. Many campus hosts are now suffering from FSO Trojans. But after disabling the FSO component, the consequence is that all ASP programs that use this component will not run and will not be able to meet the customer's needs. How to allow the FileSystemObject component without affecting the security of the server (ie: can not use this component to read and write other people's files between different virtual host users)? The following are the experiences I have explored over the years:

The first step is the key to setting up Windows 2000: right click on the C drive, click on "Share & Security" and select "Security" in the dialog box that appears. "The tab, delete the Everyone, Users group, if your website can not run even after the deletion of the ASP program, please add the IIS_WPG group (Figure 1), and restart the computer.

After this design, the FSO Trojan can no longer run. If you want to set a more secure level, please set each disk partition separately as above, and set different anonymous access users for each site. The following is an example (assuming that your host has an Abc.com site under the Ec Abc folder):

1. Open Computer Management → Local Users and Groups → Users to create an Abc user. Set the password and remove the checkmark before "User must change password when logging in next time", select "User cannot change password" and "Password never expires", and set the user to belong to the Guests group.
2. Right-click E:\\Abc and select the “Properties→Security” tab. At this point, you can see that the default security setting of this folder is “Everyone” full control (the content displayed in different situations is not exactly the same) , delete the complete control of Everyone (if you can't delete, please click the [Advanced] button, remove the checkmark in front of "Allow parent's inheritance permission to propagate" and delete all), add all the security of Administrators and Abc users to this website directory. Permissions.

3. Open IIS Manager, right click on the Abc.com host name, select the "Properties → Directory Security" tab in the pop-up menu, click [Authentication] and access control [edit] The dialog box shown in Figure 2 pops up. The default user access is “IUSR_machine name”. Click [Browse], find the Abc account created in the “Select User” dialog box, and then enter the password repeatedly after confirming.

After this setting, the user who visits the website accesses the site of the E:\\Abc folder anonymously as the Abc account, because the ABC account only has security rights to this folder, so he can only Use FSO under this folder.

Frequently Asked Questions:
How to lift the FSO upload program less than 200k limit?
First turn off the IIS admin service in the service, find Metabase under the Windows\\System32\\Inesrv directory. Xml and open, find ASPMaxRequestEntityAllowed, modify it to the required value. The default is 204800, which is 200K, change it to 51200000 (50M), and then restart the IIS admin service.