Nginx - All Prevention

Nginx Prevention secara singkat mengacu pada langkah-langkah keamanan yang diterapkan dalam Nginx untuk mencegah serangan dan meningkatkan perlindungan server. Ini bisa mencakup:

1. Rate Limiting – Mencegah serangan brute-force dengan membatasi jumlah permintaan dari satu IP.
2. WAF (Web Application Firewall) – Memblokir serangan seperti SQL Injection dan XSS.
3. SSL/TLS Configuration – Mengamankan komunikasi dengan HTTPS.
4. Access Control – Membatasi akses ke direktori atau endpoint tertentu.
5. DDoS Mitigation – Menyaring lalu lintas mencurigakan untuk mencegah serangan DDoS.

Dengan konfigurasi yang tepat, Nginx dapat menjadi lapisan keamanan tambahan untuk server dan aplikasi web. 🚀

Berikut Konfigurasinya :

########################### XSS PREVENTION ##############################
        set $block_xss 0;
if ($query_string ~ "base64_(en|de)code\(.*\)") {
set $block_xss 1;
}
if ($request_uri ~ "base64_(en|de)code\(.*\)") {
        set $block_xss 1;
}
if ($query_string ~ "(<|%3C).*script.*(>|%3E)") {
        set $block_xss 1;
}
if ($request_uri ~ "(<|%3C).*script.*(>|%3E)") {
        set $block_xss 1;
}
if ($query_string ~ "(<|%3C).*iframe.*(>|%3E)") {
        set $block_xss 1;
}
if ($request_uri ~ "(<|%3C).*iframe.*(>|%3E)") {
        set $block_xss 1;
}
if ($query_string ~ "GLOBALS(=|\[|\%[0-9A-Z]{0,2})") {
        set $block_xss 1;
}
if ($query_string ~ "_REQUEST(=|\[|\%[0-9A-Z]{0,2})") {
        set $block_xss 1;
}
if ($block_xss = 1) {
        return 403;
}

## Block SQL injections
    set $block_sql_injections 0;
    if ($query_string ~ "union.*select.*\(") {
        set $block_sql_injections 1;
    }
    if ($query_string ~ "union.*all.*select.*") {
        set $block_sql_injections 1;
    }
    if ($query_string ~ "concat.*\(") {
        set $block_sql_injections 1;
    }
    if ($block_sql_injections = 1) {
        return 403;
    }

    ## Block file injections
    set $block_file_injections 0;
    if ($query_string ~ "[a-zA-Z0-9_]=http://") {
        set $block_file_injections 1;
    }
    if ($query_string ~ "[a-zA-Z0-9_]=(\.\.//?)+") {
        set $block_file_injections 1;
    }
    if ($query_string ~ "[a-zA-Z0-9_]=/([a-z0-9_.]//?)+") {
        set $block_file_injections 1;
    }
    if ($block_file_injections = 1) {
        return 403;
    }

    ## Block common exploits
    set $block_common_exploits 0;
    if ($query_string ~ "(<|%3C).*script.*(>|%3E)") {
        set $block_common_exploits 1;
    }
    if ($query_string ~ "GLOBALS(=|\[|\%[0-9A-Z]{0,2})") {
        set $block_common_exploits 1;
    }
    if ($query_string ~ "_REQUEST(=|\[|\%[0-9A-Z]{0,2})") {
        set $block_common_exploits 1;
    }
    if ($query_string ~ "proc/self/environ") {
        set $block_common_exploits 1;
    }
    if ($query_string ~ "mosConfig_[a-zA-Z_]{1,21}(=|\%3D)") {
        set $block_common_exploits 1;
    }
    if ($query_string ~ "base64_(en|de)code\(.*\)") {
        set $block_common_exploits 1;
    }
    if ($block_common_exploits = 1) {
        return 403;
    }

    ## Block spam
    set $block_spam 0;
    if ($query_string ~ "\b(ultram|unicauca|valium|viagra|vicodin|xanax|ypxaieo)\b") {
        set $block_spam 1;
    }
    if ($query_string ~ "\b(erections|hoodia|huronriveracres|impotence|levitra|libido)\b") {
        set $block_spam 1;
    }
    if ($query_string ~ "\b(ambien|blue\spill|cialis|cocaine|ejaculation|erectile)\b") {
        set $block_spam 1;
    }
    if ($query_string ~ "\b(lipitor|phentermin|pro[sz]ac|sandyauer|tramadol|troyhamby)\b") {
        set $block_spam 1;
    }
    if ($block_spam = 1) {
        return 403;
    }

    ## Block user agents
    #SET $BLOCK_USER_AGENTS 0;

    # Don't disable wget if you need it to run cron jobs!
    #if ($http_user_agent ~ "Wget") {
    #    set $block_user_agents 1;
    #}

    # Disable Akeeba Remote Control 2.5 and earlier
    if ($http_user_agent ~ "Indy Library") {
        set $block_user_agents 1;
    }

    # Common bandwidth hoggers and hacking tools.
    if ($http_user_agent ~ "libwww-perl") {
        set $block_user_agents 1;
    }
    if ($http_user_agent ~ "GetRight") {
        set $block_user_agents 1;
    }
    if ($http_user_agent ~ "GetWeb!") {
        set $block_user_agents 1;
    }
    if ($http_user_agent ~ "Go!Zilla") {
        set $block_user_agents 1;
    }
    if ($http_user_agent ~ "Download Demon") {
        set $block_user_agents 1;
    }
    if ($http_user_agent ~ "Go-Ahead-Got-It") {
        set $block_user_agents 1;
    }
    if ($http_user_agent ~ "TurnitinBot") {
        set $block_user_agents 1;
    }
    if ($http_user_agent ~ "GrabNet") {
        set $block_user_agents 1;
    }

    if ($block_user_agents = 1) {
        return 403;
    }