You get that alert/denial because you're accessing the webserver by IP, not by name. You can set mod_security to log only - we're in the middle of implementing it and had to do that for a while to filter out false positives. Rob Marti -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of ESGLinux Sent: Wednesday, July 08, 2009 6:49 AM To: General Red Hat Linux discussion list Subject: Re: blocking ips with iptables accessing invalid URL > > > With Apache, a very useful tool to block this events is mod_security. > Very interesting apache module, I didn´t know about it. I have installed and looks nice and powerfull. For example I access my test computer with ip and with this module loaded it doesn´t work anymore: [08/Jul/2009:13:41:49 +0200] [192.168.1.191/sid#8ffde98][rid#94e5820][/][1] Access denied with code 400 (phase 2). Pattern match "^[\d\.]+$" at REQUEST_HEADERS:Host. [file "/etc/httpd/modsecurity.d/modsecurity_crs_21_protocol_anomalies.conf"] [line "60"] [id "960017"] [msg "Host header is a numeric IP address"] [severity "CRITICAL"] [tag "PROTOCOL_VIOLATION/IP_HOST"] I´ll have to configure it.... Thanks ESG -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=subscribe https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
