dnf update

dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
dnf install https://rpms.remirepo.net/enterprise/remi-release-8.rpm

dnf install gcc-c++ flex bison yajl curl-devel zlib-devel pcre-devel autoconf automake git curl make libxml2-devel pkgconfig libtool httpd-devel redhat-rpm-config wget openssl openssl-devel nano

dnf --enablerepo=PowerTools install doxygen yajl-devel

dnf --enablerepo=remi install GeoIP-devel

cd /opt/
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

useradd -r -M -s /sbin/nologin -d /usr/local/nginx nginx

cd /opt
git clone https://github.com/SpiderLabs/ModSecurity-nginx.git

wget http://nginx.org/download/nginx-1.17.6.tar.gz

tar -xvzf nginx-1.17.6.tar.gz

cd nginx-1.17.6
./configure --user=nginx --group=nginx --with-pcre-jit --with-debug --with-http_ssl_module --with-http_realip_module --add-module=/opt/ModSecurity-nginx

make
make install

cp /opt/ModSecurity/modsecurity.conf-recommended /usr/local/nginx/conf/modsecurity.conf
cp /opt/ModSecurity/unicode.mapping /usr/local/nginx/conf/

ln -s /usr/local/nginx/sbin/nginx /usr/sbin/

mkdir /var/log/nginx

nano /usr/local/nginx/conf/nginx.conf

user  nginx;
worker_processes  1;
pid  /run/nginx.pid;
events {
    worker_connections  1024;
}


http {
    include      mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    server {
    listen       80;
        server_name  your-server-ip;
        modsecurity  on;
        modsecurity_rules_file  /usr/local/nginx/conf/modsecurity.conf;
        access_log  /var/log/nginx/access.log;
        error_log  /var/log/nginx/error.log;
        location / {
            root   html;
            index  index.html index.htm;
        }
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}

nginx -t

nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

nano /etc/systemd/system/nginx.service

[Unit]
Description=The nginx server
After=network.target remote-fs.target nss-lookup.target

[Service]
Type=forking
PIDFile=/run/nginx.pid
ExecStartPre=/usr/bin/rm -f /run/nginx.pid
ExecStartPre=/usr/sbin/nginx -t
ExecStart=/usr/sbin/nginx
ExecReload=/bin/kill -s HUP $MAINPID
KillSignal=SIGQUIT
TimeoutStopSec=5
KillMode=mixed
PrivateTmp=true

[Install]
WantedBy=multi-user.target

systemctl start nginx
systemctl enable --now nginx

Created symlink /etc/systemd/system/multi-user.target.wants/nginx.service → /etc/systemd/system/nginx.service.

systemctl status nginx

? nginx.service - The nginx HTTP and reverse proxy server
   Loaded: loaded (/etc/systemd/system/nginx.service; enabled; vendor preset: disabled)
   Active: active (running) since Mon 2019-12-30 10:20:01 EST; 41s ago
  Process: 17730 ExecStart=/usr/sbin/nginx (code=exited, status=0/SUCCESS)
  Process: 17728 ExecStartPre=/usr/sbin/nginx -t (code=exited, status=0/SUCCESS)
  Process: 17727 ExecStartPre=/usr/bin/rm -f /run/nginx.pid (code=exited, status=0/SUCCESS)
Main PID: 17732 (nginx)
    Tasks: 2 (limit: 6102)
   Memory: 5.0M
   CGroup: /system.slice/nginx.service
           ??17732 nginx: master process /usr/sbin/nginx
           ??17733 nginx: worker process

Dec 30 10:20:00 nginx systemd[1]: Starting The nginx HTTP and reverse proxy server...
Dec 30 10:20:00 nginx nginx[17728]: nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
Dec 30 10:20:00 nginx nginx[17728]: nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
Dec 30 10:20:01 nginx systemd[1]: nginx.service: Failed to parse PID from file /run/nginx.pid: Invalid argument
Dec 30 10:20:01 nginx systemd[1]: Started The nginx HTTP and reverse proxy server.

nano /usr/local/nginx/conf/modsecurity.conf

SecRuleEngine DetectionOnly

SecRuleEngine On

git clone https://github.com/SpiderLabs/owasp-modsecurity-crs.git /usr/local/nginx/conf/owasp-crs

mv /usr/local/nginx/conf/owasp-crs/crs-setup.conf.example /usr/local/nginx/conf/owasp-crs/crs-setup.conf

Include owasp-crs/crs-setup.conf
Include owasp-crs/rules/*.conf