waf rules

to achieve. Here are a few layers to analyze the similarities and differences between WAF and IPs.Timeline for eventsFor the occurrence of security incidents, there are three time points: beforehand, in the matter, afterwards. Traditional IPs are usually only effective in things, that is, checking and defending attack events, and the other two time points are unique to WAF.In advance, you can detect a vulnerability by proactively scanning the Web ser

module, of course, there are also millions of hardware WAF resources. However, if WAF interception rules are prone to vulnerabilities, these millions of hardware will be a pile of scrap iron. Can WAF solve all Web security problems? Therefore, this article mainly analyzes some rare vulnerabilities that can bypass

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

between WAF and IPS are analyzed in the following aspects.Event timelineThere are three time points for the occurrence of Security Events: beforehand, during, and afterwards. Traditional IPS are only valid for attack detection and protection. The other two time points are unique to WAF. Figure 1.2 event timelineAs shown in, vulnerabilities can be detected by actively scanning and Detecting Web servers bef

(1) WAF implementation WAF includes which components, how these components interact to achieve WAF defense functions (2) WAF rules (Policy) Maintenance rules (policy) how to maintain, including access to channels,

-- add-module =/usr/local/src/ngx_devel_kit-0.2.19 -- add-module =/usr/local/src/lua-nginx-module-0.9.5rc2 -- with-google_perftools_moduleMake make install 4.2.4 add ngx_lua_waf_master Unzip-o/usr/local/src/ngx_lua_waf_master.zipMv/usr/local/src/ngx_lua_waf_master/usr/local/nginx/conf/waf # Creating a folder to store waf logs requires the write permissionMkidr/home/nignx_waf_log/ Chmod777/home/nginx_waf_l

Waf xss bypass posture Due to the wide use of application firewalls, it is necessary to test WAF's ability to defend against xss attacks. Of course, all the experiments are to prove that the vendor must eliminate the vulnerability from the root cause, and cannot lie on the WAF without any worries.Some popular WAF such as F5 Big IP, Imperva Incapsula, AQTRONIX Web

deep detection firewall usually works on the third and higher layers of the network, while the Web application firewall processes the HTTP service on the Seventh Layer and better supports it .) WAF detects exceptions in HTTP requests and rejects requests that do not comply with HTTP standards. In addition, it can only allow some options of the HTTP protocol to pass, thus reducing the impact scope of attacks. Even some Web application firewalls can st

/local/src/ngx_lua_waf_master.zipMv/usr/local/src/ngx_lua_waf_master/usr/local/nginx/conf/waf #创建文件夹存放waf日志, write permission is requiredmkidr/home/nignx_waf_log/chmod 777/home/nginx_waf_log/ Vim/usr/local/src/nginx/conf/waf/conf.luaRulepath = "/usr/local/nginx-help/conf/waf/wafconf/" #指定

tools, it will be even harder. However, in reality, it does not exist. Universality and low cost are always the primary factors. It is easy to imitate this simple protocol. As a result, robots can be seen in various places where repetitive work is required. It is essential for the security field that requires repeated tests. Traditional WAF Traditional WAF mostly focuses on information monitoring, record

, rules issued by the process The rule generation includes two main ways: 1, the collection of industry web vulnerabilities, including 0day, into the rules can be defended; 2, by the omission analysis system according to loose rules (accuracy of 50% or so), the extraction of possible false omission, artificial analysis will be the real false omission into defe

file parameter string, it will directly filter out 09-0d (09 is the tab key, 0d is the carriage return), 20 (Space) and % (one or more of the following two characters is not in hexadecimal format. Therefore, protection at the network layer will be bypassed as long as the built-in rules are larger than two characters. If the built-in rules are... you can use. % to bypass. 6 to bypass the professional firewa

Web application firewall is its understanding of Web application, deep understanding of HTTP protocol, and understanding of application layer attack. Compared with traditional firewall/ips devices, the most significant technical difference of WAF is embodied in: 1. An essential understanding of http: the ability to fully parse HTTP, support various HTTP encodings, provide rigorous HTTP protocol validation, provide HTML restrictions, support various