This article will discuss using virtual hosts to allow multiple machines - each with their own domain name (or subdomain) - to be accessed externally on one public IP address, while remaining on port 80, by having one machine proxy requests to the rest by reading the HTTP

Host:

request header.

a2enmod proxy a2enmod proxy_http

I recommend creating a new “site” (i.e. a file in /etc/apache2/sites-available/) for each machine that will be proxied. This seems to be the new Ubuntu/Debian way of configuring Apache. So start by creating and editing a new file, e.g. /etc/apache2/sites-available/foo NameVirtualHost modsec.atuin.lorddeath.net <VirtualHost modsec.atuin.lorddeath.net>

      ServerName modsec.atuin.lorddeath.net

      ErrorLog /var/log/apache2/error.atuinmodsec.log
      # Possible values include: debug, info, notice, warn, error, crit,
      # alert, emerg.
      LogLevel warn
      CustomLog /var/log/apache2/access.atuinmodsec.log combined
      ServerSignature On

      ProxyRequests Off
      ProxyPass / http://atuinmodsec/
      ProxyPassReverse / http://atuinmodsec/

      <Proxy *>
              Order deny,allow
              Allow from all
      </Proxy>

</VirtualHost>

• On Ubuntu/Debian, there will