As a system administrator, there is nothing more important than system security in all the topics of greatest concern. The administrator monitors the system every day, guards against various intrusions, and eliminates various insecure risks. The system is a server that accesses the Internet. The destruction of the network server can be divided into three categories, namely, root destruction, privacy damage, and denial of service.
Root Attack of Web Server Attacks
Attackers gain unsupervised access to the system using unencrypted transfers, or known programming vulnerabilities on the server software (such as buffer overflow vulnerabilities) . The attacker installed his own software, allowing system monitoring tools (such as the last and ps tools) to check for their existence, stealing important information, or using the system as a broiler for further hacking.
Privacy of Web Server Attacks
If network traffic to and from the system is not encrypted (or unfiltered), an attacker can view any network traffic, including passwords (this may Cause root destruction) and important or private communication with all users.
Web Server Attack Denial of Service
Attackers use violent methods, such as the use of massive legal communications, which constitutes a server storm, reducing the server's ability to the normal user's server, or even directly causing it. system breakdown.
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