Ambit Wireless USB Adapter Guida Utente Scaricare il pdf (Pagina 44)

Ambit Broadband

Users Guide 44

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7.5 Firewall

Originally, the term firewall referred to a construction technique designed to prevent the spread of

fire from one room to another. The networking term firewall is a system or group of systems that

enforces an access-control policy between two networks. It may also be defined as a mechanism

used to protect a trusted network from an untrusted network. Of course, firewalls cannot solve all of

the security problems. A firewall is one of the mechanisms used to establish a network security

perimeter in support of a network security policy. It should never be the only mechanism or method

employed. For a firewall to guard effectively, you must design and deploy it appropriately. This

requires integrating the firewall into a broad information-security policy. In addition, specific policies

must be implemented within the firewall itself.

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Ambit Wireless USB Adapter Guida Utente Pagina 44