What it is: The term “firewall” or “τείχος προστασίας” in Greek is used to describe a program configured to allow or reject various data packets passing through a computer network. It serves as a regulator of data traffic between two computer networks, such as the internet and a local network.

The primary purpose of a firewall is to prevent attacks on the local disk and, by extension, enhance security and address such threats. It provides immediate security by being configured to reject all connections except those allowed by the network administrator.


  1. Filters
  2. Security
  3. Network Management