Sistem Keamanan Server Linux CentOS Dengan Metode Port Knock dan RST Cookies

Muh. Adrian Juniarta Hidayat, Hadian Mandala Putra
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Abstract

The increase in online-based services makes a security system for server computers increasingly needed. A server computer is a device that must always be available to be accessed anytime and anywhere. Some of the security systems needed for server computers include security for ssh port access for remote server access needs and a security system to protect servers from Denial of Service (DoS) attacks which can make the server down and completely inaccessible. In this study, a security system is proposed for a server computer with the Linux CentOS operating system on a port 22 secure shell(ssh) access system using the port knock method and a security system to prevent Denial of Service (DoS) attacks on server computers using the RST Cookies method. The simulation results from the port 22 Secure Shell (SSH) access experiment for the server computer can work well where port 22 Secure Shell(SSH) will remain closed and cannot be accessed carelessly except by accessing several ports first according to predefined port knocking rules. Likewise, the implementation of a security system with the RST Cookies method works very well to prevent Denial of Service (DoS) attacks and can still keep the server accessible with a good response time of under 1 ms
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Linux CentOS服务器安全系统与端口Knock和RST Cookies方法
随着网络服务的增加,越来越需要服务器计算机的安全系统。服务器计算机是一种必须随时随地都能访问的设备。服务器计算机所需的一些安全系统包括用于远程服务器访问需要的ssh端口访问安全,以及保护服务器免受拒绝服务(DoS)攻击的安全系统,这种攻击会使服务器关闭并完全无法访问。在本研究中,针对Linux CentOS操作系统的服务器计算机,提出了一种基于端口22安全外壳(ssh)访问系统的安全系统,采用端口敲门方法,并提出了一种基于RST cookie方法的服务器计算机拒绝服务(DoS)攻击的安全系统。22端口SSH (Secure Shell)访问服务器计算机的模拟结果可以很好地工作,22端口SSH (Secure Shell)将保持关闭状态,除非根据预定义的端口敲门规则先访问几个端口,否则不能随意访问。同样,使用RST cookie方法实现的安全系统可以很好地防止拒绝服务(DoS)攻击,并且仍然可以以低于1毫秒的良好响应时间保持服务器的可访问性
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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