waf meaning firewall

1. ForewordWhile Web application is becoming richer, the Web server is becoming the main target for its powerful computing ability, processing performance and high value. SQL injection, Web tampering, Web page hanging Horse and other security incidents, frequent occurrence.Enterprises and other users generally use firewalls as a security system of the first line of defense. But, in reality, they have such problems, such as the traditional firewall sys

In the "Out of the Web application firewall misunderstanding" series of articles (i), we analyzed and discussed who can protect Web applications, in this article we will focus on the characteristics and application of WAF. As early as 2004, some foreign security vendors put forward the concept of Web application firewall (Web application

How to build a reliable WAF (Web application firewall) (1) What components are included in WAF implementation and how these components interact to implement WAF defense functions (2) How to maintain WAF rules (Policies) Maintenance Rules (Policies), including obtaining chann

Web application firewall (WAF), translated as web application firewall, is mainly used to block attacks against WEB applications. Su baozi talked about his thoughts on WAF. You are welcome to make bricks and supplement them. 1. Necessity Practical Application: enhances awareness of the security status of WEB apps, co

Web Application Firewall, also known as WEB Application Security Firewall (WAF), has become increasingly popular since the end of. In the past, these tools were monopolized by a few large projects. However, with the emergence of a large number of low-cost products, as well as open-source trial products available for choice, they can eventually be used by most peo

, there are already log files under the/home/wwwlogs/attack directory that record the entire attack log. Some notes:Filter rules under WAFCONF, can be adjusted according to demand, each rule needs to be wrapped, or split with |The rule get parameter inside args is filteredURLs are rules that are filtered only at GET request URLsPost is a rule that filters only on post requestsWhitelist is a whitelist, inside the URL matches to do not filterUser-agent is the filter rule for user-agen

Now, the market exists a large number of true and false Web application firewall products, the user's understanding of it is not clear enough, coupled with the industry's lack of Web application firewall measurement standards, Web application Firewall evaluation of the good or bad becomes very difficult. In fact, to choose a good Web application

WAF Web Application FirewallThe Web application firewall is a product that is specifically designed to protect Web applications by executing a series of security policies for Http/https.Unlike traditional firewalls, WAF works at the application layer, so there is a natural technical advantage to Web application protection. Based on a deep understanding of the bus

TABLE* output:%u0053%u0045%u004c%u0045%u0043%u0054%u0020%u0046%u0049%u0045%u004c%u0044%u0020%u0046 Case-sensitive Conversion----->[randomcase.py] () Input:insert Output:insert Wide character Bypass---->[unmagicquotes.py] () Example:* Input:1′and 1=1* Output:1%bf%27 and 1=1–%20 With**/Split SQL keyword--->[randomcomments.py] () Example: ' INSERT ' becomes ' In//s//ert ' Keyword before add comment bypass---->[versionedmorekeywords.py] () Example:* Input:1 UNION all SELECT null, NULL, CONCAT (

403 Request Denied with special charactersWhite list rule syntax:Basicrule wl:id [Negative] [mz:[$URL: target_url]|[ match_zone]| [$ARGS _var:varname]| [$BODY _vars:varname]| [$HEADERS _var:varname]| [NAME]]Wl:id (white list ID) which interception rules will go to whitelistwl:0: Add all the interception rules to whitelistWl:42: Whitelist the interception rule with ID 42Wl:42,41,43: Whitelist the interception rules with IDs 42, 41, and 43WL:-42: Add all interception rules to whitelist except for

destination Chain OUTPUT (policy ACCEPT) target Prot opt source destination View Mangle table: # iptables-t Mangle--list To view the NAT table: # iptables-t Nat--list View Raw TABLE: # Iptables-t Raw--list /!\ Note: If you do not specify the-t option, only the default filter table is displayed. Therefore, the following two forms of command are one meaning: # iptables-t Filter--list (or) # iptables--li