What are the server network security?

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Since the server plays a vital role, the confidential data and information stored on the server are very valuable. There is a popular statement today, "data is new oil."

If you are not sure how to protect the server security, or if you are not sure to cover all basic knowledge, you can learn that some security tips that can be used to protect the server will be provided below.

(1) Maintaining the software and operating system Update

in terms of server security, mastering software and security patches related to operating systems are critical . The software that does not have a patched software often occurs hacker attacks and intrusion systems. Typically, software vendors will send patch or software updates to customers, so it should not be delayed. Although companies may need to test compatibility problems between their system environments, server software has been widely tested before publishing. Patch management tools, vulnerability scan tools and other tools for searching security vulnerabilities can be helpful.

(2) Automation and use of artificial intelligence

Human inevitable mistakes, most major server failures are caused by artificial errors. Moreover, the staff may have some omissions in the safety of overload. To perform some functions, you need to automate as much as possible. For example, most systems support the automatic download and installation of patches, and more and more artificial intelligent products can monitor, protect and upgrade their systems.

(3) Use the virtual private network (VPN)

dedicated network based on the global Internet protocol address space. Virtual Special Network (VPN) is a private private network because its Internet protocol packets do not need to be transmitted through public networks.

Virtual Private Network (VPN) will allow enterprises to create a connection between different computer devices in different locations. It enables companies to safely perform operations on the server.

Enterprises can exchange information with other servers on the same account without being attacked and damaged by the outside world. To ensure server security, companies should set up virtual private networks.

(4) Considering zero signal network

One of the weaknesses of firewall and VPN is that they cannot stop internal movement. Once the hacker invades the company's network, you can almost move freely throughout the network. This is the reason for the emergence of zero signal network, and the zero trust network does not allow users or devices to access anything unless licensed or proof. This is the so-called "minimum privilege" method, which requires strict access control for all content.

(5) Encrypts all content

No data should be moved on an unencrypted server. Safety Conditioning Protocol (SSL) is a security protocol for protecting communication between two systems on the Internet. The same is true for companies' internal systems. Using Secure Conditioning Protocol (SSL) certificates, only the expected recipient has a key to decrypt information.

When connecting to a remote server, all data transmitted in the switch is encrypted using SSH (Safety Housing). Use the SSH key to perform RSA 2048 bit encryption, authenticate the SSH server.

To transfer files between servers, you need to use Secure File Transfer Protocol (FTPS). It can encrypt data files and authentication information.

Finally, a connection from the outside of the firewall is required to use a virtual private network (VPN). Virtual Dedicated Network (VPN) uses its own private network and private IP to establish an isolated communication channel between servers.

(6) Do not use only standard firewall

firewall to ensure that the server is an indispensable tool, but the firewall is not just the internal deployment of the company. Firewall, also has a managed security service provider (MSSP) to provide managed firewall services for enterprises. Depending on the scope of the service protocol, the Manage Security Service Provider (MSSP) can perform a firewall installation, application control, and web content filtering because they help determine the application and Web content (URLs) to be blocked. They will also help manage patches and updates. There is actually a large number of managed security service providers (MSSP options.

(7) Change Default

in most systems, default The account is a root account, which is a target for hackers. So you need to make changes. This is also the case for an account called Admin. Don't use your attention account name.

Enterprise can be reduced The so-called attack vector to improve server security, which is the process of running the minimum service. The server version of Windows and Linux came with many services. If these services are not required, they should be closed.

Wi-Fi access port The user will broadcast its identity by default. If you are within its range, the endpoint device will see it. Go to the access port and turn off the broadcast, so anyone who wants to use it must know the truth of the access point. Name. In addition, the company's equipment does not use the manufacturer's default name.

(8) Create a multi-server or virtual environment

isolation is enterprise can have One of the best server protection types, because if a server is threatened, the hacker's attack behavior will be locked on the server. For example, the standard approach is to separate the database server with the web application server.

< P> Full isolation will need a dedicated bare metal server, which does not share any components with other servers, which means that companies need to add more hardware. In contrast, implement virtualization can be used as an isolation environment.

< P> There is a quarantined execution environment in the data center to achieve so-called duties separation (SOD). Responsibilities (SOD) follow the principles of "minimum privilege", which actually means that users should not have excessive tasks Privilege of privilege. To protect the system and data, the user hierarchy must be established. Each user has its own user ID and as little permissions.

If the company does not afford or do not need to use a private server The components are completely isolated, and you can also choose to isolate the execution environment, also known as virtual machines and containers.

(9) Correct input password

password It is always a security problem because many people manage some sloppies for passwords. They use the same password in multiple accounts, or use simple passwords that are easy to guess, such as "Password", "Abcde" or "123456". Or even No passwords are available at all.

Need to contain a case where you need to write letters, numbers, and symbols. And change your password regularly, and you can use the original password after use. </ P >

(10) Close hidden open port

Network attack may come from people to even realize open ports. So, don't think that you know about each port, This is impossible. Those who are not absolutely necessary Should be closed. Windows Server and Linux share a general command called NetStat that can be used to determine which ports are listening, and also display the details of the currently available connection.

? Lists all ports - "NetStat -s"

? list all TCP ports - "NetStat -at"

? list all UDP port - "NetStat -au"

? All open listening ports - "Netstat -L"

(11) often perform the correct backup

Enterprises not only need timing backup, but also backups outside the network outside the network. Off-site backups are necessary, especially for the lesser attack, the company can clean up the infected drive.

Enterprises also consider bringing disaster recovery, service (Draas) as one of the service products, which can provide backups through the cloud computing model. It is provided by many internal deployment vendors and cloud computing service providers.

Whether it is an automatic backup job or manual implementation, it is necessary to ensure the test backup. This should include sound inspections that are consistent to administrators or even end users verify data recovery.

(12) Perform regular and frequent security audit

If a regular audit is not performed, you can't know the possible problems or how to solve these problems. To ensure that the company's server is fully protected. Check if there is suspicious or exception activity in the log, and check the software, operating system, and hardware firmware update, and check system performance. Typically, hacker attacks can cause system activity surges, hard drives or CPUs or network traffic may be a hacker attack signal. Because the deployment of the server is not always for all, it must be checked.

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