# Nginx WAF rules for IIS
# Automatically generated from OWASP rules.
# Include this file in your server or location block.

map $request_uri $waf_block_iis {
    default 0;
    "~*!@rx ^404$" 1;
    "~*(?:Microsoft OLE DB Provider for SQL Server(?:</font>.{1,20}?error '800(?:04005|40e31)'.{1,40}?Timeout expired| (0x80040e31)<br>Timeout expired<br>)|<h1>internal server error</h1>.*?<h2>part of the server has crashed or it has a configuration error.</h2>|cannot connect to the server: timed out)" 1;
    "~*[a-z]:x5cinetpubb" 1;
    "~*bServer Error in.{0,50}?bApplicationb" 1;
}

if ($waf_block_iis) {
    return 403;
    # Log the blocked request (optional)
    # access_log /var/log/nginx/waf_blocked.log;
}