diff --git a/install_nginx.sh b/install_nginx.sh
index ccd99ba..e58d949 100644
--- a/install_nginx.sh
+++ b/install_nginx.sh
@@ -72,21 +72,47 @@ extra_remove_packages=""
 extra_build_nginx_cmd="true"
 if [[ "$@" == *"--install-modsecurity"* ]];then
     install_modsecurity="1"
+    if [[ "$ubuntu_ver" < "16" ]]; then #use 3.0.6
+        sudo bash -l -c "
+            cd /root &&
+            apt-get install -y apt-utils autoconf automake build-essential git libcurl4-openssl-dev libgeoip-dev liblmdb-dev libpcre++-dev libtool libxml2-dev libyajl-dev pkgconf wget zlib1g-dev &&
+            git clone https://github.com/SpiderLabs/ModSecurity.git &&
+            cd ModSecurity &&
+            git checkout v3.0.6 &&
+            git submodule init &&
+            git submodule update &&
+            ./build.sh &&
+            ./configure &&
+            make &&
+            make install &&
+            cd .. &&
+            git clone --depth 1 https://github.com/SpiderLabs/ModSecurity-nginx.git
+        "
+    else
+        sudo bash -l -c "
+            cd /root &&
+            apt-get install -y apt-utils autoconf automake build-essential git libcurl4-openssl-dev libgeoip-dev liblmdb-dev libpcre++-dev libtool libxml2-dev libyajl-dev pkgconf wget zlib1g-dev &&
+            git clone --depth 1 -b v3/master --single-branch https://github.com/SpiderLabs/ModSecurity &&
+            cd ModSecurity &&
+            git submodule init &&
+            git submodule update &&
+            ./build.sh &&
+            ./configure &&
+            make &&
+            make install &&
+            cd .. &&
+            git clone --depth 1 https://github.com/SpiderLabs/ModSecurity-nginx.git
+        "
+    fi
+    nginx_configure="$nginx_configure --add-dynamic-module=../ModSecurity-nginx"
+fi
+if [[ "$@" == *"--install-naxsi"* ]];then
+    install_naxsi="1"
     sudo bash -l -c "
         cd /root &&
-        apt-get install -y apt-utils autoconf automake build-essential git libcurl4-openssl-dev libgeoip-dev liblmdb-dev libpcre++-dev libtool libxml2-dev libyajl-dev pkgconf wget zlib1g-dev &&
-        git clone --depth 1 -b v3/master --single-branch https://github.com/SpiderLabs/ModSecurity &&
-        cd ModSecurity &&
-        git submodule init &&
-        git submodule update &&
-        ./build.sh &&
-        ./configure &&
-        make &&
-        make install &&
-        cd .. &&
-        git clone --depth 1 https://github.com/SpiderLabs/ModSecurity-nginx.git
+        git clone --depth 1 https://github.com/nbs-system/naxsi.git
     "
-    nginx_configure="$nginx_configure --add-dynamic-module=../ModSecurity-nginx"
+    nginx_configure="$nginx_configure --add-module=../naxsi/naxsi_src"
 fi
 if [[ "$@" == *"--install-passenger"* ]];then
     install_passenger="1"
@@ -177,6 +203,7 @@ if [[ "$nginx_ver" < $nginx_target_ver ]] || [[ "$1" == '--force' ]] || [[ "$ins
             cd /root/nginx-$nginx_target_ver && \
             make modules && \
             cp -f objs/ngx_http_modsecurity_module.so /etc/nginx/modules/. && \
+            mkdir -p /etc/nginx/modules-enabled && \
             echo 'load_module modules/ngx_http_modsecurity_module.so;' > /etc/nginx/modules-enabled/50-mod-modsecurity.conf && \
             mkdir -p /etc/nginx/modsec && \
             wget -P /etc/nginx/modsec/ https://raw.githubusercontent.com/SpiderLabs/ModSecurity/v3/master/modsecurity.conf-recommended && \