Abstract:
The current information systems are implemented through networks. These can
be vulnerable to intrusions, like a scam to steal sensitive data or Network DoS.
There are many devices designed to prevent attacks such as Network firewalls, IDS or
IPS and typically installed in the network gateway. This make it possible to prevent the
attack from an outside network. But if an attack occurs from within the network, these
devices cannot prevent attacks. So, this paper focuses on a Network appliance which
comes pre-installed with the Ubuntu Linux operating system and bridge-utils in order to
create a network bridge and then filter the network usage through the device with
iptables. Results of the testing showed that the developed filter technique can be used
successfully in a real network scenario.