从squeeze升级到wheezy后，当我在myserver上打开一个网页（在这里更改为myserver.de ）时，会在我的apache错误日志中收到这些消息的负载：
[Sat Oct 19 01:06:21 2013] [error] [client 213.239.220.106] ModSecurity: Warning. Match of "rx ^OPTIONS$" against "REQUEST_METHOD" required. [file "/etc/apache2/modsecurity2/modsecurity_crs_21_protocol_anomalies.conf"] [line "41"] [id "960015"] [msg "Request Missing an Accept Header"] [severity "CRITICAL"] [tag "PROTOCOL_VIOLATION/MISSING_HEADER"] [hostname "www.myserver.de"] [uri "/js/jquery-ui-1.8.14.custom_myserver/css/custom-theme/images/ui-icons_ff7519_256x240.png"] [unique_id "UmG@7X8AAQEAAHHDMOkAAAAB"] [Sat Oct 19 01:06:21 2013] [error] [client 213.239.220.106] ModSecurity: Warning. Match of "rx ^OPTIONS$" against "REQUEST_METHOD" required. [file "/etc/apache2/modsecurity2/modsecurity_crs_21_protocol_anomalies.conf"] [line "41"] [id "960015"] [msg "Request Missing an Accept Header"] [severity "CRITICAL"] [tag "PROTOCOL_VIOLATION/MISSING_HEADER"] [hostname "www.myserver.de"] [uri "/js/jquery-ui-1.8.14.custom_myserver/css/custom-theme/images/ui-bg_highlight-soft_20_372806_1x100.png"] [unique_id "UmG@7X8AAQEAADSz0KYAAAAC"] [Sat Oct 19 01:06:21 2013] [error] [client 213.239.220.106] ModSecurity: Warning. Match of "rx ^OPTIONS$" against "REQUEST_METHOD" required. [file "/etc/apache2/modsecurity2/modsecurity_crs_21_protocol_anomalies.conf"] [line "41"] [id "960015"] [msg "Request Missing an Accept Header"] [severity "CRITICAL"] [tag "PROTOCOL_VIOLATION/MISSING_HEADER"] [hostname "www.myserver.de"] [uri "/js/jquery-ui-1.8.14.custom_myserver/css/custom-theme/images/ui-bg_flat_75_ddd4b0_40x100.png"] [unique_id "UmG@7X8AAQEAADTD27sAAAAF"]
40号线和41号线
/etc/apache2/modsecurity2/modsecurity_crs_21_protocol_anomalies.conf`:
看起来像这样：
SecRule &REQUEST_HEADERS:Accept "@eq 0" \ "chain,phase:2,skip:1,t:none,log,auditlog,msg:'Request Missing an Accept Header', severity:'2',id:'960015',tag:'PROTOCOL_VIOLATION/MISSING_HEADER'"
这可能是与mod_pagespeed冲突？
更新：我禁用mod_security untig这个问题已经解决，警告消失了（如预期）