系统版本：Red Hat 6
httpd版本：httpd-2.4.20
tar包：modsecurity-apache_2.5.9.tar.gz mod_evasive_1.10.1.tar.gz
关于apxs：http://itlab.idcquan.com/linux/manual/ApacheManual/programs/apxs.html
mod_evasive模块的安装
# tar xf mod_evasive_1.10.1.tar.gz
# cd mod_evasive
# ls
CHANGELOG mod_evasive20.c mod_evasive20.o mod_evasiveNSAPI.c
LICENSE mod_evasive20.la mod_evasive20.slo README
Makefile.tmpl mod_evasive20.lo mod_evasive.c test.pl
# apxs -i -a -c mod_evasive20.c
/usr/lib/apr-1/build/libtool --silent --mode=compile gcc -prefer-pic -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -Wformat-security -fno-strict-aliasing -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -D_LARGEFILE64_SOURCE -pthread -I/usr/include/httpd -I/usr/include/apr-1 -I/usr/include/apr-1 -c -o mod_evasive20.lo mod_evasive20.c && touch mod_evasive20.slo
mod_evasive20.c: 在函数‘create_hit_list’中:
mod_evasive20.c:118: 警告：在有返回值的函数中未发现 return 语句
mod_evasive20.c: 在函数‘access_checker’中:
mod_evasive20.c:212: 警告：隐式声明函数‘getpid’
mod_evasive20.c:212: 警告：格式‘%ld’需要类型‘long int’，但实参 3 的类型为‘int’
mod_evasive20.c:229: 警告：忽略声明有 warn_unused_result 属性的‘system’的返回值
mod_evasive20.c: 在函数‘destroy_hit_list’中:
mod_evasive20.c:301: 警告：在有返回值的函数中未发现 return 语句
/usr/lib/apr-1/build/libtool --silent --mode=link gcc -o mod_evasive20.la -rpath /usr/lib/httpd/modules -module -avoid-version mod_evasive20.lo
/usr/lib/httpd/build/instdso.sh SH_LIBTOOL='/usr/lib/apr-1/build/libtool' mod_evasive20.la /usr/lib/httpd/modules
/usr/lib/apr-1/build/libtool --mode=install cp mod_evasive20.la /usr/lib/httpd/modules/
libtool: install: cp .libs/mod_evasive20.so /usr/lib/httpd/modules/mod_evasive20.so
libtool: install: cp .libs/mod_evasive20.lai /usr/lib/httpd/modules/mod_evasive20.la
libtool: install: cp .libs/mod_evasive20.a /usr/lib/httpd/modules/mod_evasive20.a
libtool: install: chmod 644 /usr/lib/httpd/modules/mod_evasive20.a
libtool: install: ranlib /usr/lib/httpd/modules/mod_evasive20.a
libtool: finish: PATH="/usr/lib/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/inotify/bin:/root/bin:/sbin" ldconfig -n /usr/lib/httpd/modules
----------------------------------------------------------------------
Libraries have been installed in:
/usr/lib/httpd/modules ------>#被安装到了这里
If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
- add LIBDIR to the `LD_LIBRARY_PATH' environment variable
during execution
- add LIBDIR to the `LD_RUN_PATH' environment variable
during linking
- use the `-Wl,-rpath -Wl,LIBDIR' linker flag
- have your system administrator add LIBDIR to `/etc/ld.so.conf'
See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------
chmod 755 /usr/lib/httpd/modules/mod_evasive20.so
之后，配置文件中可以看到这样一行(因为是apxs方法加载的模块所以会自动生成)
# vim /usr/local/httpd/conf/httpd.conf LoadModule evasive20_module modules/mod_evasive20.so
补充
1. 如果遇到这样的错误：
# /usr/local/httpd/bin/apxs -i -a -c mod_evasive20.c /usr/local/apr/build-1/libtool --silent --mode=compile gcc -std=gnu99 -prefer-pic -DLINUX -D_REENTRANT -D_GNU_SOURCE -D_LARGEFILE64_SOURCE -O2 -pg -pthread -I/usr/local/httpd/include -I/usr/local/apr/include/apr-1 -I/usr/local/apr-util/include/apr-1 -I/usr/local/apr-iconv/include/apr-1 -I/usr/local/apr-iconv/include -c -o mod_evasive20.lo mod_evasive20.c && touch mod_evasive20.slo mod_evasive20.c: In function 'access_checker': mod_evasive20.c:142: error: 'conn_rec' has no member named 'remote_ip' mod_evasive20.c:146: error: 'conn_rec' has no member named 'remote_ip' mod_evasive20.c:158: error: 'conn_rec' has no member named 'remote_ip' mod_evasive20.c:165: error: 'conn_rec' has no member named 'remote_ip' mod_evasive20.c:180: error: 'conn_rec' has no member named 'remote_ip' mod_evasive20.c:187: error: 'conn_rec' has no member named 'remote_ip' mod_evasive20.c:208: error: 'conn_rec' has no member named 'remote_ip' mod_evasive20.c:212: warning: implicit declaration of function 'getpid' mod_evasive20.c:215: error: 'conn_rec' has no member named 'remote_ip' mod_evasive20.c:221: error: 'conn_rec' has no member named 'remote_ip' mod_evasive20.c:222: error: 'conn_rec' has no member named 'remote_ip' mod_evasive20.c:228: error: 'conn_rec' has no member named 'remote_ip' apxs:Error: Command failed with rc=65536
解决方法是把对应行的“remote”改成“client”
2.apxs选项说明：
-c 执行编译操作
-i 安装操作，安装一个或多个动态共享对象到服务器的modules目录
-a 自动增加一个LoadModule行到httpd.conf文件，以激活此模块，若此行存在则启用之
-A 与-a类似，但是它增加的LoadModule行前有井号前缀(#)
-e 需要执行编辑操作，可与-a和-A选项配合使用，与-i操作类似，修改httpd.conf文件，但并不安装此模块
mod_security模块的安装
# tar xf modsecurity-apache_2.5.9.tar.gz
# ls
apache2 doc modsecurity.conf-minimal README.TXT tools
CHANGES LICENSE MODSECURITY_LICENSING_EXCEPTION rules
# cd apache2/
# apxs -i -a -c mod_security2.c
/usr/lib/apr-1/build/libtool --silent --mode=compile gcc -prefer-pic -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -Wformat-security -fno-strict-aliasing -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -D_LARGEFILE64_SOURCE -pthread -I/usr/include/httpd -I/usr/include/apr-1 -I/usr/include/apr-1 -c -o mod_security2.lo mod_security2.c && touch mod_security2.slo
在包含自 modsecurity.h：38 的文件中，
从 mod_security2.c：24:
msc_pcre.h:24:18: 错误：pcre.h：没有那个文件或目录
在包含自 modsecurity.h：40 的文件中，
从 mod_security2.c：24:
msc_xml.h:25:31: 错误：libxml/xmlschemas.h：没有那个文件或目录
msc_xml.h:26:26: 错误：libxml/xpath.h：没有那个文件或目录
In file included from modsecurity.h:40,
from mod_security2.c:24:
===>报错
# yum install libxml* # ./configure --with-apxs=/usr/local/httpd/bin/apxs --with-httpd-src=/usr/local/httpd/ --with-pcre=/usr/local/pcre/ --with-apr=/usr/local/apr/bin/apr-1-config --with-libxml=/usr/ ------>通过编译安装的方法 # make ; make install make: *** [mod_security2.la] 错误 1 /usr/local/apr/build-1/libtool --silent --mode=compile gcc -std=gnu99 -prefer-pic -DLINUX -D_REENTRANT -D_GNU_SOURCE -D_LARGEFILE64_SOURCE -O2 -pg -pthread -I/usr/local/httpd/include -I/usr/local/apr/include/apr-1 -I/usr/local/apr-util/include/apr-1 -I/usr/local/apr-iconv/include/apr-1 -I/usr/local/apr-iconv/include -O2 -g -Wall -I/usr/local/httpd/include -I/usr/local/httpd/include -I. -I/usr/local/apr/include/apr-1 -I/usr/local/apr-util/include/apr-1 -I/usr/local/apr-iconv/include/apr-1 -I/usr/local/apr-iconv/include -I/usr/local/pcre/include -I/usr/local/httpd//srclib/pcre -I/usr/local/pcre/include -I/usr/include/libxml2 -c -o mod_security2.lo mod_security2.c && touch mod_security2.slo mod_security2.c: In function 'create_tx_context': mod_security2.c:345: error: 'conn_rec' has no member named 'remote_ip' mod_security2.c:346: error: 'conn_rec' has no member named 'remote_addr' ------>#报错的地方 mod_security2.c: In function 'register_hooks': mod_security2.c:1118: warning: passing argument 1 of 'ap_hook_error_log' from incompatible pointer type /usr/local/httpd/include/http_core.h:948: note: expected 'void (*)(const struct ap_errorlog_info *, const char *)' but argument is of type 'void (*)(const char *, int, int, apr_status_t, const struct server_rec *, const struct request_rec *, struct apr_pool_t *, const char *)' apxs:Error: Command failed with rc=65536
===>报错
# vim mod_security2.c
把原来的“remote“改成了client：
===>后面还出现过一次类似这样的错误，也是同样的方法解决：
然后安装成功：
Libraries have been installed in:
/usr/local/httpd/modules ------>#安装到了这里
If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
- add LIBDIR to the `LD_LIBRARY_PATH' environment variable
during execution
- add LIBDIR to the `LD_RUN_PATH' environment variable
during linking
- use the `-Wl,-rpath -Wl,LIBDIR' linker flag
- have your system administrator add LIBDIR to `/etc/ld.so.conf'
See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------
chmod 755 /usr/local/httpd/modules/mod_security2.so
===>在启动服务的时候报错：
# ./apachectl start httpd: Syntax error on line 169 of /usr/local/httpd/conf/httpd.conf: Cannot load modules/mod_security2.so into server: /usr/local/httpd/modules/mod_security2.so: undefined symbol: unixd_set_global_mutex_perms
169行的内容是这样的：LoadModule security2_module modules/mod_security2.so
未解决......