Ports-lock firewall security application is ideal for NT/2000/XP version. It has different user access levels and this allows one to access widows. All those, that do not have the access codes cannot view information from the server. The administrators are the ones who have the key to issue the access codes to different parties and they can monitor what they are doing. This will determine the areas that one is visiting online and prevent them from accessing the sites that have Trojans and other viruses. This is a secure installation for the office setting where there are many people accessing the information.
