waf firewall

Move 2 websites to Aliyun, one is because the Aliyun is stable, and the other is the roaring Cloud shield. In the Blog Federation group before the simulation of CC attacks built on the Aliyun ECS on the blog, the results Yun Dun no response, and the site has been hung. This time deliberately look at the CC protection function on the cloud shield, found that some friends do not estimate the correct use of WAF. Therefore, in this article I simply sh

corresponding to 'A' MOD '1' is 0 MOD 1 = 0, and the user's corresponding value is 0. (4) enter the user name '-"# "-" The corresponding value is 0-0 = 0, and the user's corresponding value is 0. Bit operators , |, ^, (5) enter the user name '/'1 ′# "/The value corresponding to '1' is 0/1 = 0, and the user's corresponding value is 0. Bit operators , |, ^, (6) enter the username a' 'B '# The value corresponding to 'A' 'B' is 0 0 = 0, and the user's corresponding value is 0. For th

Several ways to bypass WAF: http://www.80sec.com/%e6%b5%85%e8%b0%88%e7%bb%95%e8%bf%87waf%e7%9a%84%e6%95%b0%e7%a7%8d%e6%96%b9%e6%b3%95.htmlEmail: rayh4c # 80sec.comSite: http://www.80sec.comDate: 2011-09-06From: http://www.80sec.com /? P = 244 0 × 00 Preface At the beginning of, an SQL group injection attack was launched. Hackers swept away the ASP, Asp.net, and MSSQL websites around the world. Because MSSQL supports multi-statement injection, hackers

Site: www.80sec.com 0 × 00 PrefaceAt the beginning of, an SQL group injection attack was launched. Hackers swept away the asp, asp.net, and MSSQL websites around the world. Because MSSQL supports multi-statement injection, hackers can use a combined SQL statement to automatically tamper with the field content of the entire database and perform webpage Trojan attacks without any difference on the website. The Internet is updated and iterated quickly, but many organizations that do not have the ab

Who is the best choice?Web application protection is undoubtedly a hot topic. Because of the maturity of technologies and the increasing expectation of convenience, Web applications have become the mainstream carrier of business systems. The data value contained in the key business systems of "anjia" on the Web has aroused the favor of attackers. The Web vulnerability mining and attack tools circulating on the Internet have lowered the attack threshold, it also makes many attacks blind and rando

IPS (Intrusion prevention system) and WAF (Web Application Protection system) Two products have different usage scenarios, with the complexity of web application development, security requirements are increasing, the emergence of WAF is in compliance with the needs of the market and technology.Web application protection is undoubtedly a hot topic. Due to the development of technology and people's expectatio

Directory 1. case -insensitive bypass 2. Simple Code Bypass 3. Comment Bypass 4. separating override bypass 5.Http parametric contamination (HPP) 6. using the logical operator Or/and bypass 7. Compare operator Substitution 8. Replace with function function 9. Blinds without or and and Add Brackets 11. Buffer Overflow Bypass 1. Case-insensitive BypassThis is very familiar to everyone, for some of the too garbage WAF effect is significant, such as block

WAF bypass technology in SQL injection January 06, 2013 released in study notesBystanderBlog: http://leaver.meForum: French ForumDirectory1. Case-insensitive Bypass2. Simple code Bypass3. Comment Bypass4. Separating override Bypass5.Http parametric contamination (HPP)6. Using the logical operator Or/and bypass7. Compare operator substitution8. Replace with function function9. Blinds without OR AND and10. Parentheses11. Buffer Overflow Bypass1. Case-in

After all the system security defenses are completed, I am afraid SQL injection, cross-site attacks, and other web Application Layer defenses are left behind. This is also the most troublesome thing for the majority of webmasters, A few days ago, I wrote "Security treasure architecture technology speculation and advanced network security defense" to explain the simplest high-performance defense method, which can be slightly modified based on my own situation, we can deal with most of the attacks

Forum: French Forum directory 1. case-insensitive bypass 2. simple code bypass 3. annotation bypass 4. separated rewrite bypass 5. http parameter pollution (HPP) 6. use the logical operator or/and to bypass 7. comparison operator replacement 8. replace functions with functions 9. no need for blind injection or and 10. brackets 11. buffer overflow bypass 1. everyone is familiar with case-insensitive bypass. For some too-junk WAF, the effect is signific

Tags: http io ar using SP file div on logBystanderBlog: http://leaver.meForum: French ForumDirectory1. Case-insensitive Bypass2. Simple code Bypass3. Comment Bypass4. Separating override Bypass5.Http parametric contamination (HPP)6. Using the logical operator Or/and bypass7. Compare operator substitution8. Replace with function function9. Blinds without OR AND and10. Parentheses11. Buffer Overflow Bypass1. Case-insensitive BypassThis is very familiar to everyone, for some of the too garbage

1. Case-insensitive BypassThis is very familiar to everyone, for some of the too garbage WAF effect is significant, such as blocking the union, then the use of Union and so on bypass.2. Simple code Bypasssuch as the WAF detection keyword, then we let him not detect it. For example, to test the union, then we use%55 that is U 16 encoding to replace U,union written%55nion, combined with case can also bypass s

Adversarial ROBOT: Build a WAF that combines front and back ends We have introduced some man-in-the-middle attack solutions that combine front and back ends. Due to the particularity of Web programs, the participation of front-end scripts can greatly make up for the shortcomings of the backend, so as to achieve the traditional hard-to-achieve effect. Since the attack can be used for attacks, similar ideas can also be used for defense. If we integra

1, HPP http parameter Pollution http parameter pollution means that the server side usually does some processing when submitting two parameters of the same key value in the URL. For example, Apache is going to take the last argument, for example: user.php?id=111id=222 If you output a $_get array, the ID's value will only take 222, i.e. the extra value submitted on the URL overrides the previous value. 2, a CTF topic http://drops.wooyun.org/tips/17248 About the injected

Web Code saw http://sourceforge.net/projects/sqlxsswaf? Source = directory Start read! I. Main Functions The process is clear, 1. the main function of WAF is an endless loop. In the while (1) code segment, after the code completes processing the current log Content, it sleeps for 10 ms and continues to process new content from get_pos. 2. When the second while processing log finds the log Content starting with get or post, it checks the commands sent

App Gateway on Azure is a seven-tier load balancing service, and WAF is an extension of App Gateway services. The seven-tier load balancer adds the functionality of the WAF to protect the HTTP service in the background.Azure WAF is based on the WAF functionality implemented by the open source modsecurity owasp core rul

Recently on new projects, to build nginx to ensure security, the decision to install the WAF module, the following is the specific steps, first download the required installation package, for each installation: wget http://luajit.org/download/LuaJIT-2.0.3.tar.gz tar-zxvf luajit-2.0.3.tar.gz cd LuaJIT-2.0.3 make Make Install Then download the Nginx, wget http://nginx.org/download/nginx-1.7.6.tar.gz TAR-ZXVF nginx-1.7.6.tar.gz

Objective Tencent as a company-level webserver vulnerability protection system, the current Tencent Door God System (hereinafter referred to as God) has covered nearly million webserver servers, daily processing of HTTP data packets up to tens of billions of. There are many kinds of realization of WAF, see "Mainstream WAF architecture analysis and exploration" in details. According to the company's busine

Translation: pnig0s _ Small PLast week, I was invited to team up for a CTF flag race organized by CSAW. because of my wife and children, I can only pick one question related to Web vulnerability exploitation, called "HorceForce ". this question is worth 300 points. The general background of this question is that you have a low-privilege account and need to find a way to obtain administrator permissions.Of course, there are many ways to introduce how to pass the customs clearance, but I want to s

More and more servers will be added to waf. How to bypass: Waf is suitable for code layer separation, that is, it is not specifically customized, it also prevents General injection or cross-site. The following is a case study: When encountering such a server, he has a page with the search function. If the request is submitted as post in the search, the modified characters are displayed in the URL. For