There are networks in the network security defense

server security has a narrow and broad sense. Narrow server security refers to the security of the operating system that the server relies on; in general, server security, in addition to operating system security, includes hardware security, application security, and data security. Indeed, as the core of storage data and processing requirements, Server security involves too many links.

Especially web servers often fail to escape security issues. In many cases, hackers will treat web servers as their targets and enter their web servers to achieve their goals.

The technical staff of Shanghai Youfu Network summarizes the common methods used by hackers as follows:

1. Network Scanning - extensive search on the Internet to identify weaknesses in specific computers or software . 2. Network Sniffing Program - View packets over the Internet to capture passwords or all content. Monitor the network traffic by installing a listener program to get the username and password that the user types when connecting to the network system. 3. Denial of Service--After repeatedly sending too many requests for information to a Web site's device, the device is unable to complete the proper network service item (such as email system or online function), called "denial service" ;problem. 4. Deceive users - fake email addresses or web page addresses, and spoof passwords, credit card numbers, etc. from users. Fraud is a process used to defraud a target system to think that information is coming from or to the destination it believes. Spoofing can occur at the IP layer and above (address resolution spoofing, IP source address spoofing, email spoofing, etc.). When the IP address of a host is assumed to be valid and trusted by the Tcp and Udp services, an attacker's host can be masqueraded as a trusted host or client using the source route of the IP address. 5. Trojan horse - a program that is not noticeable by the user and contains instructions that can exploit known weaknesses in some software. 6. Backdoor - To prevent the original entry point from being detected, leave a few hidden paths to facilitate re-entry. 7. Malicious applets - microprograms that modify files on the hard drive, send fake emails or steal passwords. 8. Competitive Dialer - Automatically dial thousands of phone numbers to find the path to the modem connection. A logic bomb is an instruction in a computer program that can trigger a malicious operation. 9. Buffer Overflow - Sends too much data to the computer's memory buffer to destroy the computer's control system or gain control of the computer. 10. Password Deciphering - Guess the password with the software. The usual practice is to crack the encrypted form of the password by monitoring the password packet on the communication channel. 11. Social Engineering - Talk to company employees and bring out valuable information. 12. Dumpster Diving - Check your company's trash carefully to find information that can help you get into your company's computer.

The above is just a common method used by hackers. In fact, there are more possibilities for server security to be tested. No IDC service provider can take the lead to say that our server is absolutely safe. Therefore, the security problem is that every user must Consider, always alert.

Although hackers are so embarrassed, the server itself is not waiting to be slaughtered. By installing a hardware firewall, installing a special DOS attack protection system, introducing intrusion detection and protection mechanisms, and timing security scanning can all be a server to some extent. Safety is guaranteed. Whether IDC service providers have rapid response capabilities is one of the factors that determine server security.

Many users often ignore the above points because of price factors. Many IDC service providers attract customers at low prices and have a lack of security measures, but lack professional and technical personnel, perfect network security services and Emergency response services often put their servers at risk, and once the server's security risks burst, it may cause users to lose more.

The technicians of the company have said: "As a professional IDC service provider, we must consider the user's security, vaguely or blindly brave the security of the server, and must come up with a practical technical team and service team. In order to provide comprehensive security services, users can rest assured. "