Content Filtering Overview
Content Filtering: Choose What Content You Want to Display
Content Filters are an evoking methodology used in the field of security technology. Essentially, these are set of tools that are intended to monitor all of the traffic carries out on a network and compare it to a set of rules that define any unacceptable activity. These tools works as a Centralized Monitored platform handled by any system administrator with a predefined set of rules by filtering or blocking the objectionable traffic from entering the network. As valuable an internet is in growing a business, thereby companies of all sizes, schools, government agencies and libraries face the need to control access to inappropriate materials or objectionable websites to attain maximum ROI form a business or to maintain network performance in much compelling manner.
How do content monitoring tools work? How well do they monitor outbound traffic?
One feature many Firewalls, either windows or Linux Firewall, have been pushing recently is content filtering proxies, whether transparent or authenticated. The technology used here is much simple. These are carries out in various method such as if the tool is set to be a monitor then with the help of a technician one can simply attach it to the networking LAN either by using a network tap, span port or similar replication technology. One point to be ensure is that the network through which the monitor is attached must consist with copy of all traffic.
In order to monitor the rate of outbound traffic, one must choose a Content Filter accordingly to their business requirement, such that which type of traffic to be enable or disabled. A content filter must not follow the hit and trial case. It must be enabled with whitelist/blacklist technology. It was basically a formation of list which represent a combination of content to be pass or bypass in the presence of the filter tools.
This monitoring is not that much effective if we scroll down time a bit in the past where you need to manually enter each URL into the gateway. This approach is not only time consuming, it limits the filter's effectiveness as millions of websites or those unusual contents are created or accessed through alternative methods. Thus making it impossible to achieve.
Now-a-days, Content filtering usually works by implying a complete new smarter technology that is specifying character strings. In this method if the string got matched with the undesirable content, that is to be screened out. This content is typically screened for pornographic content and sometimes also for violence or hate-oriented content. Thus monitoring the outbound traffic to be enabled or disabled.