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The enemy within: students no longer go through their defenses

The enemy within:

Allow students to bypass their defenses

The threat from web

The web has replaced email as the main entry point to target = "_blank" title = "malware" malware> on a network, with a brand new infected Web page discovered approximately every 4.5 seconds1. Most of these are legitimate sites – Government agencies, Google, MySpace, Facebook, the Cambridge Dictionary, BusinessWeek, and many more have been victims of hackers. Clicking on these pages raises a multitude of risks to networks, including the loss of confidential information, virus and spyware infection and the recruitment botnet.

Schools in the front line

Schools K-12 are particularly at risk from malware delivered online – and is often presented by the very people they need to protect: the students. Not only are many children very technically skilled, but they have ample opportunity to work unobserved in computer labs with Internet and libraries, which are used by hundreds of different students each day.

Unlike corporate environments, where users are adults employment, wages and reputation to worry, K-12 students often do not know or care about the consequences their actions to the school network. Bypassing network controls access to restricted websites is usually just considered a fun challenge, or a way to polish anti-establishment image. However, in addition to ensuring their network security, schools are held accountable by parents and state and federal laws – such as the Children Act Internet Protection Act (CIPA) – with the protection of young, impressionable minds web predators and harmful content. An example of a student without going through the fabric filters participating school in the eighth grade in Texas who downloaded the pornography during a study group2.

Bypassing web filters

Students in North America are increasingly anonymous proxies to bypass web filters at your school to see pornography or prohibited access social networking sites. anonymizing proxies are widespread, with several hundred new powers published daily. Easy to access and difficult for security solutions detect traditional, anonymous proxies are websites that trick an organization's web filter into thinking that the legitimate user is browsing for content. The user visits the site of anonymity and into his first address provided, and the proxy opens a portal to the desired destination of the student. Traditional Web filters only identify anonymous proxy URL, not the destination URL, and as such, often allow the application. In some cases, the student simply set your browser to automatically point proxy anonymity, ensuring that all web activity is hidden.

Schools K-12 are particularly at risk from Internet malware delivered – and often presented by the very people who need to protect: the students.

In addition to conceal the prohibited content, anonymizing proxies change constantly, with scores of new ones appear daily. K-12 school administrators to spend hours each week searching and blocking anonymizing proxies, significantly affecting the resources and overheads.

Many sites also offer daily updated lists of anonymous proxies. A quick Google search will produce hundreds of anonymous proxy sites. There are even video instructions on YouTube showing students how to build one. It is also not difficult for students and experienced team to create your own anonymous proxy servers at home, using the free tools available on the Internet.

The defeat of anonymous proxies

There are a number of ways in which schools can complement your existing web filtering technology to identify and block anonymous proxy servers:

Reputation screening services • •

Real-time detection of proxy • •

User training • •

The reputation of screening services

Reputation services constant detection public knowledge track and forums3 anonymous proxy sites that exchange their data. Then you can upgrade a school web filters – ideally every 15 minutes or faster – To ensure that the Web gateway security solution remains ahead of the vine of the students. Reducing the amount of time an anonymizing proxy is available a student offers a major inconvenience to its ability to track and use of such services.

Real-time detection of proxy

Some anonymous proxies would keep a closely guarded secret, or built in house for the exclusive use of a person. Because your data is not immune to share services Detection of reputation and should be followed in real time.

Real-time detection monitors and analyzes all web requests and responses to signals of the traffic is being routed through a proxy of anonymity. If one is detected, the application may be blocked. Signs that a student is using a proxy URL anonymity include strings hidden inside other URLs, and part is put at URLs. Real-time detection is based on strong decryption capabilities, as many proxies use encryption to hide their actions.

anonymizing proxies are widespread, with several hundred new powers published daily.

User education

The user training is always a central pillar of the implementation of a network acceptable use policy (AUP), and many schools require students and their parents formally sign their acceptance of these policies and ensure they are aware of the consequences of violating them. AUP must always contain a clause prohibiting the use of anonymous proxy servers, and state that controls are in place to detect and monitor its use. Formal AUP not deter many students treat of circumventing the rules, especially if that information is part of a note sent to parents.

Many schools also teach classes on Internet safety as part of its computer curriculum, which can be used to further explain the dangers of anonymous proxies and the thinking behind the UPA.

Summary

proxies for anonymity allows students to bypass their school web filter to block inappropriate access and content. Their large number and changing and ease of use make it difficult to block, and schools can be liable if minors have access to pornography and other places in the interior network. However, the reputation and real-time detection identifies and blocks proxies for anonymity, and user education should ensure that students and parents are aware of the risks to bypass web filters.

About the Author

This article was provided by Sophos and is reproduced here with their full permission. Sophos provides full data protection services including: security software, encryption software, antivirus, and malware.

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