National NVIP of the year
Great Yarmouth Port Company Ltd
Check Your Security Ltd is an East of England based systems design and build integration company specialising in CCTV/IP-CCTV, structured cabling systems, Fibre cabling, Access control and Intruder security systems.
Firewall
What is a FirewallIn computing, a firewall is a piece of hardware and/or software which functions in a networked environment to prevent some communications forbidden by the security policy yet allow necessarry communication to go unimpeded.
A Firewall has the basic task of controlling traffic between what are known as zones of trust. They are often given colours so the internet, an untrusted zone is classed as Red, wheras an internal, trusted network or LAN would be Green. The green side is everything behind the Firewall. The ultimate goal is to provide controlled connectivity between zones of differing trust levels through the enforcement of a security policy and connectivity model based on the least privilege principle that is to say connectivity is given at the lowest level required to carry out task or function and in so doing this protects the system as a whole from unwarranted attacks. Remote CCTV monitoring often uses a port which is blocked by a Firewall so to enable remote viewing your network administrator will need to alter the rules on the firewall to allow access to your CCTV recording system.
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