Web WonderAll things web related plus a few surprises

What Is An Internet Filter?

An internet filter is a piece of software, designed to control access to online content – sites and pages available on the web.

Think of it as a nightclub bouncer, letting in the good-time punters, while keeping out the troublemakers. Filters are most commonly found in private networks, such as workplaces, libraries and schools – helping to ensure that users within the network cannot access material, which violates office policy and industry regulation. But you can also get personal filters, like OnlineFamily.Norton, which run on your home computer to give you personal control over the internet safety in your household.

On a much larger scale are nationwide filters, applied by ISPs under government instruction, to comply with legislation and local customs – think China, Cuba and Uzbekistan.

How a filter works

A filter sits between you and the sites you try to access, screening for inappropriate content using a whitelist, blacklist or keyword system.

A whitelist system works like an exclusive guest list, where access is granted to a pre-determined list of “safe” websites. On a blacklist system, the opposite happens – access is denied to sites on the pre-determined “no admissions” roster.

Keyword filtering operates in a similar way to blacklisting – only instead of sites, the blacklist is made up of words flagged as inappropriate. The keyword filter scans the contents of requested sites, and access is allowed if no forbidden words are found.

What gets blocked?

Legitimate content may get blocked by accident.

In terms of blocking access to content, filters do their job painfully well – that is, targeted inappropriate content gets blocked, but so do innocent and well-meaning sites with legitimate information. For instance, a keyword filter on a public library computer may be configured to filter all sites containing the word “breast”. In most cases, this is successful in blocking unwanted sexual material – but may also deny access to cooking recipes (“chicken breast”), costume & fashion sites (“place tape measure under the breast”) and medical information (“breast cancer”).

For a filter to work effectively, it must be continually monitored, reviewed and updated to ensure that it is on par with real life – no easy task, by any means.

Network-level and ISP-level filters offer a broad, no-think solution, but are unable to cater to individual needs, which can result in a “lowest common denominator” approach – unsuitable for even a wider audience. Making modifications to a filter at this level can be expensive to instigate, and has a large area of impact if something goes wrong.

A personal filter is often recommended as a more affordable and practical alternative. While it only works in your home, you can tailor it to suit the needs of your household – which means more suitable protection for you and your family.

Do filters actually protect users?

A filter is simply a tool for blocking websites – and like all tools, can be effective when used correctly for the right purpose.

It’s a common misconception that an internet filter is adequate for preventing access to unwanted material. Filters cannot effectively monitor private channels – email, instant messaging, peer-to-peer file sharing, and offline media – the more frequented methods for distributing illegal and questionable content. While a filter may provide basic user protection, they are by no means a catch-all solution for keeping trouble at bay.

Staying safe online

Really staying safe online means getting to know your environment, understanding the risks and remembering what to do in a difficult situation.

About the Author

This article is written by Hugh McInnes about internet filters and internet safety from malicious spam or illegitimate content. Find out how filters work with whitelist and blacklists, and how internet service providers can help protect your internet.

How to Bypass Internet Filters

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Baby Monitor for iPhone, Android, and Internet Browsers,Support Mac/Windows/Linux-Esky C5900 Wireless/Wired Pan & Tilt IP Camera $86.61 1.Improved remote monitoring via H.264 compression: A.5 times bandwidth and storage saving comparing to traditional Motion JPEG compression. B.Record 4-5 times longer time on limited local micro SD card storage. C.View live video streams on web browsers from PC, Mac, iPad or smart phones. F. Free or paid apps for your iphone or Android. 2. Pan/Tilt remote control: A. Control pan/tilt of the IP camera remotely on PC, Mac, iPad or smart phones. B. 300 degree pan and 120 degree tilt range. 3. Full-fledged surveillance management PC software included for free: A. One-stop management center managing up to 81 devices. B.Instantly turn your PC into a professional surveillance system. C.This software is for Windows family OS only. 4.High quality video, night vision: A. High quality video resolution: 640×480 @ 30 frames per second. B. Infrared night vision lets you see in complete darkness, and turns on automatically in low light.5. Easy set up and configuration:A. PC software IP Camera Wizard can configure networking parameters of IP camera automatically for you. B. Dedicated DDNS server provided to give your camera a fixed domain name even though the IP address of your network is dynamic. C. Auto-program most brands of routers to create port forwarding, saving the hassle to configure routers manually. 6.Built-in DVR recording: Included a micro SD slot, saving footage to your own micro SD card even if the camera doesn’t connect to network. 7. Motion-triggered alerts sent to your email or FTP server: A. series of consecutive pictures will be sent to your specified email addresses or FTP servers. B. TLS/STARTTLS email SMTP server is supported. I.e., Gmail accounts can be configured as sender. 8. IR Cut filter: Automatically turn on Infrared filter during the day to filter IR light. Make daylight video more realistic and vivid.

Barracuda 210 Spam Firewall – Serial , 1 x 10/100Base-TX , 1 x VGA $2085.5 With the rapid proliferation of spyware and the severe risks spyware brings, organizations are seeking solutions to help detect, remove and prevent spyware. Organizations are also seeking to filter general internet content to create a more productive environment. The Barracuda Spyware Firewall is an integrated antispyware and content filtering solution that is powerful, easy to use, and affordable for businesses of all sizes. It easily and completely eliminates spyware and other forms of malware from your organization. No more productivity loss trying to repair computers or make computers usable again.

Barracuda 210 Web Filter with 3 years Energizer Updates – 1 x 10/100Base-TX LAN $2685.5 The Barracuda 210 Web Filter is a complete content filtering and application blocking solution designed to enforce acceptable Internet usage policies. It includes powerful, award-winning spyware and virus protection. With no per user license fees, the Barracuda Web Filter offers the most affordable content and spyware protection available.

Barracuda 310 Spam Firewall – 1 x , 1 x 10/100Base-TX $2685.5 With the rapid proliferation of spyware and the severe risks spyware brings, organizations are seeking solutions to help detect, remove and prevent spyware. Organizations are also seeking to filter general internet content to create a more productive environment. The Barracuda Spyware Firewall is an integrated antispyware and content filtering solution that is powerful, easy to use, and affordable for businesses of all sizes. It easily and completely eliminates spyware and other forms of malware from your organization. No more productivity loss trying to repair computers or make computers usable again.

Barracuda 610 Web Filter with 3 years Energizer Updates – 1 x 10/100/1000Base-T LAN $15285.5 The Barracuda 610 Web Filter is a complete content filtering and application blocking solution designed to enforce acceptable Internet usage policies. It includes powerful, award-winning spyware and virus protection. With no per user license fees, the Barracuda Web Filter offers the most affordable content and spyware protection available.

Barracuda Energize Updates – 1 Year – 8 x 5 – Technical – Electronic Service $2100.99 Barracuda Energize Updates provide your Barracuda Networks appliance with the protection from the latest Internet threats. Our team at Barracuda Central continuously monitors the Internet for new trends in network security threats and develops strategies to mitigate those threats. Depending on the appliance, Energize Updates include the appropriate definitions for spam, virus, web filter, spyware filter, intrusion prevention, IM protocols, and document formats. Updates are delivered on an hourly basis to ensure you always have the latest definitions and the most comprehensive protection.

Barracuda Energize Updates – 1 Year – 8 x 5 – Technical – Electronic Service $1748.99 Barracuda Energize Updates provide your Barracuda Networks appliance with the protection from the latest Internet threats. Our team at Barracuda Central continuously monitors the Internet for new trends in network security threats and develops strategies to mitigate those threats. Depending on the appliance, Energize Updates include the appropriate definitions for spam, virus, web filter, spyware filter, intrusion prevention, IM protocols, and document formats. Updates are delivered on an hourly basis to ensure you always have the latest definitions and the most comprehensive protection.

Barracuda Energize Updates – 1 Year – 8 x 5 – Technical – Electronic Service $1748.99 Barracuda Energize Updates provide your Barracuda Networks appliance with the protection from the latest Internet threats. Our team at Barracuda Central continuously monitors the Internet for new trends in network security threats and develops strategies to mitigate those threats. Depending on the appliance, Energize Updates include the appropriate definitions for spam, virus, web filter, spyware filter, intrusion prevention, IM protocols, and document formats. Updates are delivered on an hourly basis to ensure you always have the latest definitions and the most comprehensive protection.

Barracuda Energize Updates – 3 Year – 8 x 5 – Technical – Electronic Service $8448.99 Barracuda Energize Updates provide your Barracuda Networks appliance with the protection from the latest Internet threats. Our team at Barracuda Central continuously monitors the Internet for new trends in network security threats and develops strategies to mitigate those threats. Depending on the appliance, Energize Updates include the appropriate definitions for spam, virus, web filter, spyware filter, intrusion prevention, IM protocols, and document formats. Updates are delivered on an hourly basis to ensure you always have the latest definitions and the most comprehensive protection.

Barracuda Energize Updates – 5 Year – 24 x 7 – Technical – Electronic Service $4298.99 Barracuda Energize Updates provide your Barracuda Networks appliance with the protection from the latest Internet threats. Barracuda’s team at Barracuda Central continuously monitors the Internet for new trends in network security threats and develops strategies to mitigate those threats. Depending on the appliance, Energize Updates include the appropriate definitions for spam, virus, content categories, spyware filter, intrusion prevention, IM protocols, policies, security updates, attacks and document formats. Updates are delivered on an hourly basis to ensure you always have the latest definitions and the most comprehensive protection.

Barracuda Energize Updates – 5 Year – 8 x 5 – Technical – Electronic Service $74000.99 Barracuda Energize Updates provide your Barracuda Networks appliance with the protection from the latest Internet threats. Our team at Barracuda Central continuously monitors the Internet for new trends in network security threats and develops strategies to mitigate those threats. Depending on the appliance, Energize Updates include the appropriate definitions for spam, virus, web filter, spyware filter, intrusion prevention, IM protocols, and document formats. Updates are delivered on an hourly basis to ensure you always have the latest definitions and the most comprehensive protection.

Berkeley Filter $54 Used – Bitte beachten Sie, dass dieser Titel berwiegend aus Inhalten besteht, die im Internet kostenlos erh ltlich sind (z.B. aus der Wikipedia-Enzyklop die). Das Berkeley Filter, auch Berkeley Paket Filter (BPF), bietet auf unix hnlichen Computersystemen eine Schnittstelle zur Sicherungsschicht an, die es erlaubt, Datenpakete der Sicherungsschicht zu senden und zu empfangen. Falls der Treiber der Netzwerkschnittstelle den Promiscuous Mode unterst tzt, kann die Schnittstelle in diesen Modus gesc