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This article introduces the relevant knowledge of "what are the skills to improve network security". In the operation of actual cases, many people will encounter such a dilemma. Next, let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

View third-party access and policies

Network administrators and IT staff should have a formal system to review and delete third-party access rights and credentials they have issued, but somehow there are always some flaws. In general, at least once a year, you need to focus on which third-party services can access your network or VPN, delete server information that is no longer active, and make sure that each server is active. For example, if you set up a temporary account to provide visitors with special access, but forget to delete it at the end of the visit, it will leave a security risk in the system. Be sure to use the principle of minimum permissions whenever you can. The same applies to firewall policies. Administrators often add temporary policies for some reason, but forget to delete them afterwards. For example, if a third party needs to transfer files remotely on a regular basis, the IT department may start a temporary FTP server and set policies to allow third parties to access data remotely through the firewall. A month later, there was no need to transfer files, but the administrator forgot about it. Six months later, the forgotten server has not been repaired and is likely to be attacked. The good news is that many firewalls and UTM have features that show which policies are frequently used by users and which ones have not been used for a long time, which can help administrators quickly remove these outdated hidden dangers.

Second, take stock of network upgrades

With the development of the network, the mastery of technology should also be upgraded. Once a year, identify any changes to the network you use, and assess whether current hardware and software security is online, and security measures against endpoints need to be increased as the number of Internet of things devices increases. With the improvement of network speed, firewall devices also need sufficient resources to handle the increased network traffic and perform the original security scanning work. Ensure that network traffic does not exceed the security control range without reducing network performance or skipping important security services.

III. Test the new phishing baseline

Almost every company should provide regular phishing training for all employees and conduct enterprise-wide tests once a year to confirm that employees have the ability to identify phishing emails and respond correctly. In addition, consider ways to enhance or improve phishing training. For example, can employees be taught to identify the latest spear phishing attacks? Can you identify a fake bank login page? Or can users provide feedback immediately when they click on a malicious link? Safety-conscious employees are also a safe asset.

IV. Irregular repair

On ordinary desktops and servers, there should be a fixed patch cycle. Whether for problematic servers or devices, unupdated Internet of things devices, or old operating systems, please count at least once a year. Check that the firmware on all hardware devices is up-to-date, and consider replacing old servers, devices, etc. Vulnerability and patch management software does not always provide timely feedback on problems with your server or Internet of things devices, and these devices account for an increasing proportion of enterprise terminals. An effective way to ensure the safety of equipment during regular inspection.

Change the password and consider the MFA solution

Strong passwords (long random strings unique to each account) do not need to be changed frequently, but it is also a good idea to review and update the passwords of an organization or organization on a regular basis. Today, many companies encourage employees to use password managers and multi-factor authentication tools. The password manager has the ability to automatically change all passwords recorded by the user, and the operation is very convenient. And multi-factor authentication is more and more popular in security defense measures. Simple passwords and repeated passwords lead to a continuous increase in the amount of data leakage, and the addition of MFA (Multi-Factor Authentication) can effectively reduce security risks. Nowadays, many cloud-based MFA services are cheaper and more convenient than key cards and other devices in the past, and are also favored by many small and medium-sized enterprises. With the growing threat of the network, the value of data is self-evident. Reasonable arrangement of network cleaning can effectively improve the security of enterprise information and help the development of enterprises.

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