cyber security protocols

]?:/ /[\\w-]+\\. "); Buff.append (domain); Buff.append ("(\\/.*)? $)"); } buff.append ("| ( ^(?! HTTP). +$) "); White_domain_pattern = Pattern.compile (buff.tostring (), pattern.case_insensitive);}Five. File Upload preventionRiskThe server is under hacker controlPrincipleThe attacker can control the server by uploading an executable script via an attachment upload vulnerability.Prevention Verify file extension, only allow upload of file types in whitelist (both front and b

20155208 Xu Zihan "Cyber Confrontation" EXP9 Web Security Basic experiment requirementsThe objective of this practice is to understand the basic principles of commonly used network attack techniques. Webgoat the experiment in practice.Experimental processFor the last time, I did not choose to try the program for the last time I did this exciting activity.WebGoatWebgoat is a web-based vulnerability experimen

20155227 "Cyber Confrontation" EXP9 Web Security Foundation Practice Experiment Content About Webgoat Cross-site Scripting (XSS) Exercise Injection flaws Practice CSRF attack Basic question Answer SQL injection attack principle, how to defend? 原理：SQL注入攻击指的是通过构建特殊的输入作为参数传入Web应用程序，而这些输入大都是SQL语法里的一些组合，通过执行SQL语句进而执行攻击者所要的操作，使非法数据侵入系统。防御：1.对用户的输入进行校验，可以通过正则表达式，双"-"进行转换等。2.

center, still has some or all of the same network protocols, and a Business Network center machine may have a public firewall or a dedicated security officer. In contrast to this, some of the personal machines used in homes, offices and small companies are really open portals, without the ability to prevent hackers. The threat is realistic: if you use a cable modem or DSL connection and have a long online

cyber security company, the results found that the implementation of DDoS attack suspect is 4 network security product development company employees. The case, the original company is mainly engaged in network security products production, sales and development, in order to increase the effectiveness of the defy, firs

?1function aaa () {eval (" 32:64:39:30:61:39:30:38:31:63:62:38:64:61:63:38:61:64:65:65:61:34:63:33:61:66:30:33:34:39:32:61 ")}　　Then remove the ":" will find this is a hexadecimal arrayAnd then on the tool.This topic can be used to modify the JS and CSS methods +sources to find useful things in the directoryFourth question:　　[AppleScript] Plain text view copy code?or a review element, but this is a string of Unicode encodings but I'm a little bit confused, but I know I'm definitely going to use

Testing the user field 13. To return normally, the User field is the field in the DVWA database table users. Go on with this one test. Finally, we get all the fields of the table users in database Dvwa, User_id,first_name,last_name,user,password,avatar,last_login,failed_login. 14. All fields of the table users in the database Dvwa are known. You can now download the data from the table. Enter 1 ' Union Select 1,group_concat (user_id, first_name, last_name, password, avatar, Last_login, Failed_l

. Data query access via parameterized stored procedures3. Parameterized SQL statements......XSS attacks : cross-site scripting attacksIt is a security vulnerability attack of a Web site application and is one of code injection. It allows malicious users to inject code into a Web page, and other users will be affected when they view the page. Such attacks typically include HTML and client-side scripting languages.Common XSS attack methods and purposes

should be the subscription number (xuanhun521a number of readers have asked us to open a column for a combat-like article. The first to face all the folk experts call for the following:1. Scope: Network attack and defense (not limited to attack, prevention more important)2. Writing: Clear expression, logical and reasonable, for the public3. How to contribute: Leave a message at the bottom of this article, or send an email to [email protected]What can we repay?OH , NO ! There is no way to repay y

script in the user's browser to obtain information such as its cookie. Instead, CSRF is borrowing the user's identity to send a request to Web server because the request is not intended by the user, so it is called "cross-site request forgery". For the defense of CSRF can also start from the following aspects: through the Referer, token or verification code to detect user submissions; Try not to expose the user's privacy information in the link of the page, for the user to modify the dele

sequence to execute the attack steps, today's automatic attack tool can be based on random selection, Predefined decision paths or directly managed through intruders, to change their patterns and behavior; the maturity of the attack tool, unlike earlier attack tools, can be quickly changed by an upgrade or a part of the tool to launch a rapidly changing attack, and there will be several different forms of attack tools in each attack. In addition, attack tools are increasingly commonly developed

WCF provides a rich set of pre-binding protocols. These pre-binding protocols have developed the corresponding security mode at the beginning. This document lists the Security modes and verification methods of common protocols. 1. basichttpbinding Initial

Concept of security protocol and Authentication Service security protocol for information security HTTPS concept The HTTPS full name hypertext Transfer Protocol over Secure Socket layer is an SSL/TLS-based HTTP protocol located at the application layer. The HTTP protocol for the application layer? The SSL/TLS protocol for the Transport layer. SSL/TL

IPsec is designed to solve some basic security problems of IPv4. To solve these problems, it implements four services: Data Transmission encryption, data integrity verification, data source authentication, and data status integrity. To implement these services, IPsec VPN introduces many protocols. In this article, you will learn how to implement the IPsec security