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Is the cloud firewall policy accurate? What should we do if the business is affected by directly blocking it?

Created on 2025-05-22 11:27:54
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A cloud firewall policy is designed to control inbound and outbound network traffic based on predefined security rules. Its accuracy depends on how well these rules are configured to balance security and business needs. If the policy is too restrictive, it may block legitimate traffic, disrupting business operations.

For example, if a firewall rule mistakenly blocks access to a critical business application (e.g., an e-commerce platform's payment gateway), customers may be unable to complete transactions, leading to revenue loss.

To address this:

  1. Review and Adjust Rules: Analyze logs to identify which rules are causing the blockage and refine them to allow legitimate traffic while maintaining security.
  2. Implement Granular Policies: Use application-layer filtering or allow-listing for specific IPs, domains, or services to minimize false positives.
  3. Leverage Advanced Security Features: Use services like Tencent Cloud's Security Group or Network ACL to create layered defenses, ensuring critical services remain accessible.
  4. Monitor and Test: Continuously monitor traffic and test firewall rules in a staging environment before applying them to production.

If the business is affected, temporarily adjust the policy to restore access, then investigate and fix the root cause to prevent recurrence.