The HTTP proxy server also supports Gopher . A finger client is available on the firewall allowing protected users to finger external systems. The finger daemon is deactivated so that unprotected users can not finger the protected network. A socksified version of finger is available to allow users on protected hosts to finger external systems in a transparent manner. A ping client is available on the firewall to allow the administrator to ping external systems.
External users are only able to ping the external firewall ports.
Since we have disabled IP packet forwarding, the internal systems are not addressable by external hosts and thus are invisible to the outside world. A socksified ping client is also available for transparent pinging. All rights reserved.