络安全设置指南（linux主机网）

Network security refers to the protection of data issued and transferred over the network, and is an essential part of information security. As the Internet continually influences all aspects of our lives, network security has become increasingly important in our daily life. In order to ensure network security, it is essential to follow certain precautions.

Firstly, set a strong password and change it regularly. The passwords should be composed of numbers, letters, and special characters like ‘!@#$%^&*’. Don’t use easily guessed passwords like your ID card number, birthday and phone number.

Second, install anti-virus software to protect against malicious attacks and ensure the security of your computer and network. Strong antivirus software must be accurately configured to ensure the highest level of network security and resilience.

Thirdly, be aware of phishing emails and websites. Phishing is a popular cybercrime, with an ever-increasing effective rate. Users should ensure that links or attachments from emails or websites sent from unknown sources are not opened to protect against malicious code.

Fourthly, patch the system in time. Patches are released to repair security vulnerabilities and threats. Ensuring that all systems are up to date and patches are applied in a timely manner is key to ensuring network security.

Finally, implement operational protection. If you have important data you don’t want to lose, back it up regularly. The data should be backed up to an external storage medium such as a USB drive or cloud system.

Overall, network security is very important and everyone needs to take proper safety measures to safeguard against cybercrime. By following the above tips, you can protect your network and data from unwanted intruders. Here is a sample of the step-by-step guide for network security setup:

Step 1: Change your passwords regularly and use strong characters

Step 2: Install and update anti-virus software

Step 3: Delete phishing emails or links

Step 4: Patch the system with latest releases

Step 5: Regularly backup important data to an external drive or cloud storage