Tag Archives: Reverse Proxy

Nginx Reverse Proxy with Sub Directory Mapping

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Setup Note:

My web application has a sub-directory, 192.168.1.8:8088/messages, that I want to expose to the outside world as messages.mysite.com. I’ve gotten half way there but I seem to be stuck. My requirements are as follows

  • Redirect the site from HTTP to HTTPS.
  • As I cannot edit the links the web application generates, I need to be able to accept requests from the client such as messages.mysite.com/messages?id=23023.
  • Do not allow reverse proxy access to the root web application, 192.168.1.8:8088 or to any sub-directory other than 192.168.1.8:8088/messages and its children.

Continue reading “Nginx Reverse Proxy with Sub Directory Mapping” »

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Build WAF with Reverse Proxy Load Balancer using Nginx

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Getting Started

First, it is recommended to update and upgrade all your software packages to the latest version. You can update all of them by running the following command:

apt update -y
apt upgrade -y

Once all the packages are updated, install other required packages with the following command:

apt install g++ flex bison curl apache2-dev doxygen libyajl-dev ssdeep liblua5.2-dev libgeoip-dev libtool dh-autoreconf libcurl4-gnutls-dev libxml2 libpcre++-dev libxml2-dev git liblmdb-dev libpkgconf3 lmdb-doc pkgconf zlib1g-dev libssl-dev -y

Once you are done, you can proceed to the next step.

Install ModSecurity on Ubuntu 22.04

By default, the ModSecurity package is not included in the Ubuntu default repository. So you will need to compile it from the source.

First, download the latest version of ModSecurity with the following command:

wget https://github.com/SpiderLabs/ModSecurity/releases/download/v3.0.8/modsecurity-v3.0.8.tar.gz

Once the download is completed, extract the downloaded file with the following command:

tar -xvzf modsecurity-v3.0.8.tar.gz

Next, navigate to the extracted directory and configure it with the following command: Continue reading “Build WAF with Reverse Proxy Load Balancer using Nginx” »

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Nginx Reverse Proxying Multiple Domains Using map Module

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map_hash_bucket_size 128;
map $http_host $backend_servers {
hostnames;
    default                         www.example.com;
    frontend.example2.com           backend.example2.com
    frontend.example3.com           backend.example3.com
    www.example.org                 backend.example.org
}
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
server {
    location / {
        proxy_pass  http://$backend_servers
    }
}
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