The manual update process is a core part of the feature. This is essential for:

To download and apply the Nessus plugin update file (commonly named all-2.0.tar.gz

虽然某些更新过程中系统可能会自动处理，但为确保更新过程的稳定性和数据一致性，官方强烈建议在执行 nessuscli 命令前手动停止 nessusd 服务。

While online installations of Tenable Nessus receive automatic plugin updates every 24 hours, enterprise security architectures often isolate vulnerability scanners within high-security zones. Air-gapped networks, military enclaves, and industrial control system (ICS/SCADA) environments restrict external internet access entirely.

Because your target Nessus scanner is completely offline, you must perform these steps on an interim workstation that has unrestricted access to the public internet. Step 1: Access the Offline Registration Portal

Run the appropriate command for your operating system to generate the challenge code: /opt/nessus/sbin/nessuscli fetch --challenge Use code with caution. Windows (Command Prompt as Administrator):

If you are setting up this process for the first time, let me know: What your Nessus scanner runs on?

Once you have the verified all-2.0.tar.gz file, transfer it to the target Nessus server. The installation process differs slightly depending on your operating system.

Click the provided link on the registration page to download the latest plugin archive. The file will automatically save as all-2.0.tar.gz .

Make note of your major version (e.g., Nessus 10.7.1). The plugin format must match your Nessus build.