Firewall e Proxy

Safety first. The Internet is a world full of unique resources and with which all can interact. But, like any reality it has insidious sides: for this you need to be cautious.
Use a firewall; choose and establish a policy that defines who can do what. Often as not granted permissions are carefully hidden subtle threats.

Is a firewall enough? Often it's not. In many cases it is necessary to mediate access to the Web using a proxy server. Extremely flexible and configurable, they allow you to define who can go where and who can not, recording everything that is done, page by page.

[nizan] builds sites and maintains servers for the Web and can help you formulate and implement a security policy, providing the tools needed to automate controls and verify that the system is safe. These include scheduling for specific actions to maintain the best defense, timely updating of systems, access controls and detection of attacks.