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What are the five most common firewall strategy failures? many beginners are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can get something.

Handling errors such as allowing malicious traffic or blocking legitimate traffic may be about detecting firewall policy problems and performing automatic correction of firewall policy errors. The following is an understanding of the importance of correcting erroneous packets, because we know that it is impossible to find all these incorrect packets and make corrections. Therefore, the best practice is to create policy changes based on sampled error packets, and this approach can also be used for larger packets. Here are the five most common firewall policy failures.

The following are the five most common firewall policy failures:

. Wrong order: when the firewall is out of order, it will be misconfigured. When some new rules are added at the beginning of the firewall policy, an order error occurs if the order between the new rule and the original rule is not carefully considered.

two。 Missing rules: this failure occurs when an administrator adds a new rule but forgets to add the new rule to the original firewall policy.

3. Misjudgment: when administrators make judgments on certain rules based on security requirements, some special cases may be ignored.

4. Decision error: this error is attributed to the wrong decision after setting the rule.

5. External rule errors: this type of error indicates that the administrator needs to remove some rules from the original policy.

This error occurs when the administrator adds a new rule but forgets to delete the old rule, and the old rule filters out a packet similar to the new rule. Implementation researchers who automatically correct firewall policy failures recommend using the agreedy algorithm to solve the above problems. In their experiments, the researchers identified a policy failure at each step, and then calculated the number of successful or failed experiments to determine whether the method they used was the most appropriate. The researchers then calculated the number of tests to correct each type of failure to select the most appropriate method for the most successful and complete experiment.

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