Enabling Web Tamper Protection

Before enabling WTP, you need to allocate a quota to a specified server. If the service is disabled or the server is deleted, the quota can be allocated to other servers.

The premium edition will be enabled when you enable WTP.

How WTP Prevents Web Page Tampering

**Table 1** How WTP works
Protection Type	Mechanism
Static web page protection	Local directory lock WTP locks files in a web file directory in a drive to prevent attackers from modifying them. Website administrators can update the website content by using privileged processes. Active backup and restoration If WTP detects that a file in the protection directory is tampered with, it immediately uses the backup file on the local host to restore the file. Remote backup and restoration After a remote backup server is configured, if a file in a protected directory is changed, HSS will back up the updated file. If the file and backup directory on the local server become invalid, you can log in to the remote backup server, obtain backup files, and manually restore the tampered websites. You can view backup paths on the Manage Remote Backup Server page. For details, see Changing a Remote Backup Server.
Dynamic web page protection	The proprietary RASP can detect application program behaviors, prevent attackers from tampering with web pages through application programs, and provide self-protection in Tomcat application runtime.

Prerequisites

Choose Server Protection > Web Tamper Protection and click the Servers tab. The Protection Status of the server is Unprotected.
Choose Asset Management > Servers. The Agent Status of a server is Online, and the Protection Status of the server is Unprotected.

Setting Protected Directories

You can set:

You can add a maximum of 50 protected directories to a host. For details, see "Adding a Protected Directory".
To record the running status of the server in real time, exclude the log files in the protected directory. You can grant high read and write permissions for log files to prevent attackers from viewing or tampering with the log files.

Enabling WTP

Log in to the management console.
Click in the upper left corner and select a region or project.
In the upper left corner of the page, click and choose Security > Host Security Service.
In the navigation pane, choose Server Protection > Web Tamper Protection. On the Web Tamper Protection page, click Add Server.
On the Add Server page, click the Available servers tab. Select the target server, select a quota from the drop-down list or retain the default value, and click Add and Enable Protection.
You can check the server protection status on the Web Tamper Protection page.
- Choose Server Protection > Web Tamper Protection. If the Protection Status of the server is Protected, WTP has been enabled.
- Choose Asset Management > Servers & Quota and click the Servers tab. If the protection status of the target server is Enabled and the Edition of it is Web Tamper Protection, the WTP edition is enabled.

A quota can be bound to a server to protect it, on condition that the agent on the server is online.
If the version of the agent installed on the Linux server is 3.2.8 or later or the version of the agent installed on the Windows server is 4.0.16 or later, ransomware prevention is automatically enabled with the WTP edition. To enhance ransomware prevention, you can configure specified protected directories. You are also advised to enable backup so that you can restore data in the case of a ransomware attack to minimize losses. For details, see Modifying a Protection Policy and Enabling Ransomware Backup.
Disable WTP before updating a website and enable it after the update is complete. Otherwise, the website will fail to be updated.
Your website is not protected while WTP is disabled. Enable it immediately after updating your website.

Related Operations

Disabling WTP

To disable WTP for a server, choose Server Protection > Web Tamper Protection and click the Servers tab. Click Disable Protection in the Operation column of a server.

Before disabling WTP, perform a comprehensive detection on the server, handle known risks, and record operation information to prevent O&M errors and attacks on the server.
If WTP is disabled, web applications are more likely to be tampered with. Therefore, you need to delete important data on the server, stop important services on the server, and disconnect the server from the external network in a timely manner to avoid unnecessary losses caused by attacks on the server.
After you or disable WTP, files in the protected directory are no longer protected. You are advised to process files in the protected directory before performing these operations.
If you find some files missing after disabling WTP, search for them in the local or remote backup path.