alcatraz security systems

In the same domain, there are two systems that send AJAX requests from one system to another to change a field of the second system's database (if now only send user_id to the second system), how to guarantee the security of Ajax, I am mainly afraid of is everyone know send User_ After the ID of this AJAX is not safe, there are those methods can be as safe as possible? This problem can also be extended to

Article Title: Linux system deep security reinforcement (2 ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. 　　　 4. File System Permissions 　　 Find out all programs with "s" bits in the system, remove unnecessary "s" bits, or delete unnecessary ones directly, which can

user, use the hyphen (-) to indicate that the SU program is not only the user, in addition, you need to obtain the user's environment when logging on to the system. Defense methods: In UNIX systems, computer security systems are built on the authentication mechanism. If the root password is out of password, the system will be compromised, especially in the netw

The Intrusion Detection System (IDS) checks all inbound and outbound network activities and confirms a suspicious pattern in which IDS can specify the attempt to access (or damage the system) someone's network attack (or system attack ). The intrusion detection system is different from the firewall in that the firewall focuses on intrusion to prevent it from occurring. The firewall restricts access between networks to prevent intrusion, but does not send alarm signals to attacks from inside the

With its stable and open source code, Linux has been increasingly used as Web servers and database servers on the Internet. As a result, the security of Linux systems has been paid more and more attention, reinforcing the Linux system is imminent for many people. So what should we do to better harden the Linux system to cope with various emergencies and hacker attacks?1. Installation and upgradeUse the late

the experiment process, the understanding of the knowledge point in the experiment instruction book. (1) Linux porting?The so-called Linux migration is the Linux operating system for the specific target platform to do the necessary rewriting, installed on the target platform to make it run correctly. The problems encountered during the experiment and the solutions. (1) The image cannot be printed out.Solution: Box problem, change the box after the successful printing!The basi

Testing(3) Existing implementations2. Standardization(1) GlobalPlatform defines several sets of APIsTEE Client APITEE Internal API(2) Third-party TA can be run on different secure OS3. Semiles(1) What is Semeiles?A specific implementation of secure OSCompatible with GlobalPlatform standardized API(2) services provided by SemeilesSecure, isolated, and trusted execution environmentDigital Rights ManagementSecure Payment Environment(3) Semeiles architectureFour, mass production1. Key generationSup

Label:This week to learn the network service configuration, security configuration is really very little teaching, and the teacher seldom talk about actual needs, blindly let the students follow her steps to do.DNS for Domain name resolution serviceTime Synchronization Service NTPFile Sharing Service FTPFile Sharing Service NFSFile Sharing Services SambaAuto Mount Service AutoFSMail Service PostfixWeb Services ApacheDynamic IP Address Distribution ser

, firewall not meeting prompt, can be ignored inNet.nf_conntrack_max =25000000 -Net.netfilter.nf_conntract_max =25000000 tonet.netfilter.nf_conntract_tcp_timeout_established = the +Net.netfilter.nf_conntract_tcp_timeout_time_wait = - -Net.netfilter.nf_conntract_tcp_timeout_close_wait = - theNet.netfilter.nf_conntract_tcp_timeout_fin_wait = - * EOF $ Change the system character set to "ZH_CN." UTF-8 "so that it supports Chinese and prevents garbled problems. The corresponding Chinese character

The principle of computer composition and architecture, in the soft examination does not divide the value of the very heavy branch, more scattered. The same picture to share with you.Among them, the composition of the computer is divided into five parts: the arithmetic, memory, controller, input device, output device five most.The architecture of a computer consists of pipelining, code, cache, and so on.Data security has been in the computer developme