Functions

Service configuration

Protection for IP addresses and domain names (wildcard, top-level, and second-level domain names)

WAF offers the cloud and dedicated modes to protect websites. You can add either domain names or IP addresses to WAF. Before you start, get familiar with the following differences:

• Cloud mode: protects your cloud and on-premises web applications as long as they have domain names.
• Dedicated mode: protects your cloud web applications as long as they have domain names or IP addresses (public or private IP addresses).

HTTP/HTTPS service protection

WAF can protect HTTP and HTTPS traffic for a website.

WebSocket

WAF can check WebSocket requests. This feature is enabled by default.

SSE

WAF supports the Server-Sent Events (SSE) protocol, which is enabled by default.

Non-standard port protection

In addition to standard ports 80 and 443, WAF also supports non-standard ports.

Web application security protection

Basic web protection

With an extensive preset reputation database, WAF defends against Open Web Application Security Project (OWASP) top 10 threats, vulnerability exploits, web shells, and other threats.

• General checks

  WAF defends against attacks such as SQL injections, XSS, file inclusions, Bash vulnerabilities, remote command execution, directory traversal, sensitive file access, and command/code injections.

• Web shell detection

  Protects against web shells from upload interface.

• Precise identification
  • WAF uses built-in semantic analysis engine and regex engine and supports configuring of blacklist/whitelist rules, which reduces false positives.
  • WAF can automatically decode common codes no matter how many times they are encoded.

    WAF can decode the following types of code: url_encode, Unicode, XML, OCT, HEX, HTML escaping, Base64, case confusion, PHP serialization, Java serialization, UTF-7, mixed nested encoding, and concatenation of JavaScript, Shell, and PHP code.

• Deep inspection

  WAF identifies and blocks evasion attacks, such as the ones that use homomorphic character obfuscation, command injection with deformed wildcard characters, UTF-7, data URI scheme, and other techniques.

• Header inspection

  WAF detects all header fields in the requests.

CC attack protection rules

WAF can restrict access to a specific URL on your website based on a unique IP address, cookie, or referer field, mitigating CC attacks.

Precise protection rules

WAF enables you to combine common HTTP fields (such as IP, path, referer, user agent, and params) to configure powerful and precise access control policies. You can configure precision protection rules to protect workloads from hotlinking and block requests with empty fields.

Blacklist and whitelist rules

You can configure blacklist and whitelist rules to block, log only, or allow access requests from specified IP addresses.

Geolocation access control rules

You can configure custom rules to allow or block requests from a specific country or region.

Web tamper protection rules

You can configure this type of rule to prevent a static web page from being tampered with.

Website anti-crawler protection rules

WAF dynamically analyzes your website service models and accurately identifies crawler behavior based on data risk control and bot identification systems.

Information leakage prevention rules

You can add two types of information leakage prevention rules.

• Sensitive information filtering: prevents disclosure of sensitive information (such as ID numbers, phone numbers, and email addresses).
• Response code interception: blocks specified HTTP status codes.

Global protection whitelist rules

You can configure this type of rule to let WAF ignore certain rules for specific requests.

Data masking rules

You can configure data masking rules to prevent sensitive data such as passwords from being displayed in event logs.

Advanced settings

PCI DSS/PCI 3DS Compliance Check and TLS

• WAF supports PCI DSS and PCI 3DS compliance check.

Traffic identifiers for a known attack source

WAF allows you to configure traffic identifiers by IP address, session, or user tag to block possibly malicious requests from known attack sources based on IP address, Cookie, or Params.

Other functions

Event management

• WAF allows you to view and handle false alarms for blocked or logged events.
• You can download events data over the past five days.
• You can use Log Tank Service (LTS) to record all WAF logs, including attack and access logs.

Notifications

You can configure alarm rules for WAF to notify you of exceptions by email, SMS messages, or other method you specify. So that you can handle exceptions in a timely manner and keep your website stable.

GUI-based security data

WAF provides a GUI-based interface for you to monitor attack information and event logs in real time.

• Centralized policy configuration

  On the WAF console, you can configure policies applicable to multiple protected domain names in a centralized manner so that the policies can be quickly delivered and take effect.

• Traffic and event statistics

  WAF displays the number of requests, the number and types of security events, and log information in real time.

High flexibility and reliability

The service works across clusters and regions and supports load balancing. This can prevent single points of failure (SPOFs) and ensure smooth online capacity expansion, maximizing service stability.