modsecurity是linux环境下非常优秀的开源防御web攻击软件，它可以防御针对apache的攻击，使用规则匹配，它的解码流程和匹配流程是很值得学习和借鉴。-modsecurity is a very good linux environment, open source software, Defense web attacks, it can be defensive attack against apache, using the rules match, its decoding process and matching process is very worthy of study and reference.