- What's New
- Function Overview
- Service Overview
- Billing
- Getting Started
-
User Guide
- Creating a User Group and Granting Permissions
- Checking the Dashboard
- Purchasing and Changing the Specifications of CFW
- Enabling Internet Border Traffic Protection
- Enabling VPC Border Traffic Protection
- Enabling NAT Gateway Traffic Protection
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Configuring Access Control Policies to Control Traffic
- Access Control Policy Overview
- Configuring Protection Rules to Block or Allow Traffic
- Adding Blacklist or Whitelist Items to Block or Allow Traffic
- Viewing Protection Information Using the Policy Assistant
- Managing Access Control Policies
- Managing IP Address Groups
- Domain Name Management
- Service Group Management
- Attack Defense
- Viewing Traffic Statistics
- Viewing CFW Protection Logs
- System Management
- Permissions Management
- Using Cloud Eye to Monitor CFW
- CTS Auditing
-
Best Practices
- CFW Best Practice Summary
- Purchasing and Querying CFW via API
- Migrating Security Policies to CFW in Batches
- Configuration Suggestions for Using CFW with WAF, Advanced Anti-DDoS, and CDN
- Allowing Internet Traffic Only to a Specified Port
- Allowing Outbound Traffic from Cloud Resources Only to a Specified Domain Name
- Using CFW to Defend Against Network Attacks
- Configuring a Protection Rule to Protect Traffic Between Two VPCs
- Configuring a Protection Rule to Protect SNAT Traffic
- Using CFW to Protect Enterprise Resources
- Using CFW to Protect EIPs Across Accounts
- Using CFW to Protect VPCs Across Accounts
-
API Reference
- Before You Start
- API Overview
- API Calling
-
API
-
Firewall Management
- Creating a Firewall
- Obtaining the Status of a CFW Task
- Deleting a Firewall
- Querying the Firewall List
- Changing the East-West Firewall Protection Status
- Querying Firewall Details
- Obtaining East-West Firewall Information
- Creating an East-West Firewall
- Querying the Number of Protected VPCs
- Creating a Tag
- Deleting a Tag
- EIP Management
-
ACL Rule Management
- Creating an ACL Rule
- Deleting an ACL Rule
- Deleting ACL Rules in Batches
- Deleting the Number of Rule Hits
- Updating an ACL Rule
- Updating Rule Actions in Batches
- Setting the Priority of an ACL Protection Rule
- Querying a Protection Rule
- Querying Rule Tags
- Obtaining the Number of Rule Hits
- Viewing the Region List
- Checking the ACL Import Status
- Blacklist/Whitelist Management
- Address Group Management
- Service Group Management
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Domain Name Resolution and Domain Name Group Management
- Adding a Domain Name Group
- Deleting a Domain Name Group
- Updating a Domain Name Group
- Updating the DNS Server List
- Querying the Domain Name Group List
- Querying the DNS Server List
- Querying an IP Address for Domain Name Resolution
- Obtain the list of domain names in a domain name group
- Adding a Domain Name List
- Deleting a Domain Name List
- Viewing Domain Group Details
- Obtaining the DNS Resolution Result of a Domain Name
- Deleting Domain Groups in Batches
- IPS management
- Log Management
- Packet Capture Management
- Antivirus Management
- Alarm Configuration Management
- Tag Management
- IPS Management
-
Firewall Management
- Appendix
- SDK Reference
-
FAQs
-
About the Product
- Does CFW Support Off-Cloud Servers?
- What Are the QPS, New Connections, and Concurrent Connections Supported by CFW?
- Can CFW Be Shared Across Accounts?
- What Are the Differences Between CFW and WAF?
- What Are the Differences Between CFW, Security Groups, and Network ACLs?
- How Does CFW Control Access?
- What Are the Priorities of the Protection Settings in CFW?
- Can WAF, Advanced Anti-DDoS, and CFW Be Deployed Together?
- Can CFW Protect Resources Across Enterprise Projects?
- How Long Are CFW Logs Stored by Default?
- Regions and AZs
-
Troubleshooting
- What Do I Do If Service Traffic is Abnormal?
- Why Are Traffic and Attack Logs Incomplete?
- Why Does a Protection Rule Not Take Effect?
- What Do I Do If IPS Blocks Normal Services?
- Why Is No Data Displayed on the Access Control Logs Page?
- Why Is the IP Address Translated Using NAT64 Blocked?
- Why Some Permissions Become Invalid After a System Policy Is Granted to an Enterprise Project?
- What Do I Do If a Message Indicating Insufficient Permissions Is Displayed When I Configure LTS Logs?
-
Network Traffic
- How Do I Calculate the Number of Protected VPCs and the Peak Protection Traffic at the VPC Border?
- How Does CFW Collect Traffic Statistics?
- What Is the Protection Bandwidth Provided by CFW?
- What Do I Do If My Service Traffic Exceeds the Protection Bandwidth?
- What Are the Differences Between the Data Displayed in Traffic Trend Module and the Traffic Analysis Page?
- How Do I Verify the Validity of an Outbound HTTP/HTTPS Domain Protection Rule?
- How Do I Obtain the Real IP Address of an Attacker?
- What Do I Do If a High Traffic Warning Is Received?
-
About the Product
- Videos
-
More Documents
-
User Guide (Ankara Region)
- Product Overview
- Checking the Dashboard
- Creating Cloud Firewall
- Enabling Internet Border Traffic Protection
- Enabling VPC Border Traffic Protection
-
Configuring Access Control Policies to Control Traffic
- Access Control Policy Overview
- Configuring Protection Rules to Block or Allow Traffic
- Adding Blacklist or Whitelist Items to Block or Allow Traffic
- Viewing Protection Information Using the Policy Assistant
- Managing Access Control Policies
- Managing IP Address Groups
- Domain Name Management
- Service Group Management
- Attack Defense
- Viewing Traffic Statistics
- Viewing CFW Protection Logs
- System Management
-
FAQs
-
About the Product
- Does CFW Support Off-Cloud Servers?
- What Are the QPS, New Connections, and Concurrent Connections Supported by CFW?
- Can CFW Be Shared Across Accounts?
- What Are the Differences Between CFW and WAF?
- What Are the Differences Between CFW, Security Groups, and Network ACLs?
- How Does CFW Control Access?
- What Are the Priorities of the Protection Settings in CFW?
- Can WAF and CFW Be Deployed Together?
- Troubleshooting
- Network Traffic
-
About the Product
- Change History
- API Reference (Ankara Region)
-
User Guide (Ankara Region)
- General Reference
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Using CFW to Defend Against Access Control Attacks
You can use CFW to defend against access control attacks.
Application Scenarios
Access control is a key method to protect system resources from unauthorized access. It restricts users' or processes' access to system resources to enhance system security. Attackers may try to bypass or invalidate control measures to implement unauthorized access.
The IPS rule library of CFW provides rules to defend against access control attacks. It can effectively identify and block such behaviors that bypass or damage the system access control mechanism, reducing the risk of such attacks.
What Is an Access Control Attack?
In access control attacks, attackers exploit access control vulnerabilities in systems or applications to illegally obtain or elevate their access permissions in the systems or applications, perform unauthorized operations, or access sensitive resources.
Common access control attacks include:
- Unauthorized access attack
- Vertical privilege escalation: Common users can access or operate resources or functions that require administrator permissions.
- Horizontal privilege escalation: A user can access or operate resources or functions that only another user has permissions for.
- Multi-phase privilege escalation: In an operation that requires multiple steps (such as fund transfer), an attacker may skip steps and directly perform the last step.
- Password attack
- Brute-force attack: Attackers crack usernames and passwords by attempting all possible combinations, including pure brute-force attacks (blanket search) and dictionary-based brute-force attacks (using a password dictionary).
- Rainbow table attack: A batch processing dictionary attack implemented by searching the pre-generated password and hash string mapping table to crack the password.
- Session hijacking
An attacker obtains the session ID of a user, uses the session ID to log in to the target account, and performs unauthorized operations. This usually takes place when the user session identifier is leaked or predicted.
- Access aggregation attack
A method that is often used in in-depth testing. It collects multiple pieces of non-sensitive information, combines the information to obtain sensitive information, and compares the information to complete an attack.
Harms of Access Control Attacks
Access control attacks severely threaten system security. The major impacts are as follows:
- Data leakage: Attackers can bypass the access control mechanism to obtain sensitive data, such as personal information and financial data, without authorization.
- Data tampering: Attackers can bypass the access control mechanism to tamper with system data, generating false and unreliable data.
- System breakdown: Attackers can bypass the access control mechanism to obtain administrator rights in the system, causing the system to be damaged or crashed.
- Information security risks: Access control attacks damage the security mechanism in the system and increase information security risks, such as malware, virus, and Trojan attacks.
How to Defend Against Access Control Attacks
In addition to access control policy design, identity authentication, security audit and monitoring, security configuration and patch management, access control, vulnerability defense, security training and awareness improvement, and security technologies and tools, you can use the CFW intrusion prevention function to block access control attacks.
- Log in to the management console.
- Click
in the upper left corner of the management console and select a region or project.
- In the navigation pane on the left, click
and choose Security & Compliance > Cloud Firewall. The Dashboard page will be displayed.
- (Optional) Switch to another firewall instance: Select a firewall from the drop-down list in the upper left corner of the page.
- Click View Effective Rules under Basic Protection. The Basic Protection tab is displayed.
- Filter the rules for access control prevention. In the filter above the list, select Access-Control from the Attack Types drop-down list.
- Enable protection in batches. Select multiple rules at a time and click Intercept.
NOTE:
Intercept: The firewall records the traffic that matches the current rule in attack event logs and blocks the traffic.
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