Remove an entry from the Threat Shield bypass list via the interface

Oct 13, 2025 by pynkocean.com 55 views

Introduction

Threat Shield is a crucial security feature in NethSecurity that helps protect your network from malicious activities. One of its key components is the bypass list, which allows you to exclude specific IP addresses or networks from being blocked by Threat Shield. However, a recent issue has been reported where bypass entries require a manual 'fw4 restart' to take effect. In this article, we will delve into the details of this issue, its expected behavior, and the actual behavior observed.

Expected Behavior

When you remove an entry from the Threat Shield bypass list via the interface, it is expected that the entry should no longer appear in the bypass list both in the interface and in the underlying configuration. This means that the change should be reflected immediately, without the need for any additional actions.

Actual Behavior

However, the actual behavior observed is that after removing an entry from the Threat Shield bypass list, it is properly removed in the interface. However, the corresponding change is not reflected in the underlying configuration until the fw4 restart command is executed. This means that even after removing an entry from the bypass list, it still appears in the underlying configuration until the fw4 restart command is run.

Steps to Reproduce

To reproduce this issue, follow these steps:

Remove an entry from the Threat Shield bypass list via the interface: Go to the Threat Shield settings and remove an entry from the bypass list.
Verify that the entry is no longer visible in the interface: Check that the entry has been successfully removed from the bypass list.
Check the underlying configuration: Run the following commands to verify that the entry has been removed from the underlying configuration:
- uci show adblock.global.adb_bypass
- nft list set inet fw4 tsdns_bypass

Example

To illustrate this issue, let's consider an example:

Before removal, the NFT configuration contains: elements = { 10.20.30.40, 10.20.30.55 }.
Removed 10.20.30.55 via the interface.
Afterward, nft list set inet fw4 tsdns_bypass still includes 10.20.30.55 until fw4 restart.

Components

The issue has been observed on the following NethSecurity version:

NethSecurity version: 8-23.05.5-ns.1.4.1

Conclusion

In conclusion, the issue of bypass entries requiring a manual 'fw4 restart' to take effect is a critical security concern that needs to be addressed. The expected behavior is that the change should be reflected immediately, without the need for any additional actions. However, the actual behavior observed is that the change is not reflected in the underlying configuration until the fw4 restart command is executed. We hope that this article has provided valuable insights into this issue and has helped to raise awareness about the importance of security in NethSecurity.

Recommendations

To resolve this issue, we recommend the following:

Run the fw4 restart command after removing an entry from the Threat Shield bypass list to ensure that the change is reflected in the underlying configuration.
Upgrade to the latest version of NethSecurity to ensure that you have the latest security patches and fixes.
Monitor your network traffic and Threat Shield logs to detect any potential security threats.

Future Development

We hope that the NethSecurity team will address this issue in future updates and provide a more seamless experience for users. In the meantime, we recommend that users take the necessary precautions to ensure the security of their network.

FAQs

Q: What is the expected behavior when removing an entry from the Threat Shield bypass list? A: The expected behavior is that the entry should no longer appear in the bypass list both in the interface and in the underlying configuration.

Q: What is the actual behavior observed when removing an entry from the Threat Shield bypass list? A: The actual behavior observed is that the entry is properly removed in the interface, but the corresponding change is not reflected in the underlying configuration until the fw4 restart command is executed.

Introduction

In our previous article, we discussed the issue of bypass entries requiring a manual 'fw4 restart' to take effect in NethSecurity's Threat Shield. This issue has raised concerns about the security of networks protected by Threat Shield. In this Q&A article, we will address some of the most frequently asked questions about this issue.

Q&A

Q: What is the expected behavior when removing an entry from the Threat Shield bypass list?

A: The expected behavior is that the entry should no longer appear in the bypass list both in the interface and in the underlying configuration.

Q: What is the actual behavior observed when removing an entry from the Threat Shield bypass list?

A: The actual behavior observed is that the entry is properly removed in the interface, but the corresponding change is not reflected in the underlying configuration until the fw4 restart command is executed.

Q: How can I resolve this issue?

A: To resolve this issue, run the fw4 restart command after removing an entry from the Threat Shield bypass list to ensure that the change is reflected in the underlying configuration.

Q: Why is this issue a concern for network security?

A: This issue is a concern for network security because it can lead to a delay in updating the bypass list, which can allow malicious traffic to pass through the network. This can compromise the security of the network and put sensitive data at risk.

Q: Can this issue be resolved by upgrading to the latest version of NethSecurity?

A: Upgrading to the latest version of NethSecurity may resolve this issue, but it is not a guarantee. The best course of action is to run the fw4 restart command after removing an entry from the Threat Shield bypass list to ensure that the change is reflected in the underlying configuration.

Q: How can I prevent this issue from occurring in the future?

A: To prevent this issue from occurring in the future, make sure to run the fw4 restart command after removing an entry from the Threat Shield bypass list. Additionally, consider upgrading to the latest version of NethSecurity to ensure that you have the latest security patches and fixes.

Q: What is the impact of this issue on network performance?

A: The impact of this issue on network performance is minimal, as the fw4 restart command is typically executed quickly. However, if the fw4 restart command is not executed, it can lead to a delay in updating the bypass list, which can impact network performance.

Q: Can this issue be resolved by modifying the underlying configuration manually?

A: Modifying the underlying configuration manually is not recommended, as it can lead to unintended consequences and compromise the security of the network. The best course of action is to run the fw4 restart command after removing an entry from the Threat Shield bypass list to ensure that the change is reflected in the underlying configuration.

Q: What is the recommended course of action for resolving this issue?

A: The recommended course of action for resolving this issue is to run the fw4 restart command after removing an entry from the Threat Shield bypass list. Additionally, consider upgrading to the latest version of NethSecurity to ensure that you have the latest security patches and fixes.

Conclusion

In conclusion, the issue of bypass entries requiring a manual 'fw4 restart' to take effect in NethSecurity's Threat Shield is a concern for network security. By understanding the expected and actual behavior of this issue, users can take steps to resolve it and prevent it from occurring in the future. We hope that this Q&A article has provided valuable insights into this issue and has helped to raise awareness about the importance of security in NethSecurity.