content-filtering | Avance Zone

content filter

Spam emails pose the risk of lost productivity when deleting them, infecting the network with viruses from incoming emails and infecting other networks from viruses in outbound emails with the accompanying embarrassment and potential legal liability.

Personal surfing poses the risk of lost productivity, legal liability and malware installed on the network with the associated risk of breach of confidentiality.
File sharing poses the risk of exposing confidential information to unknown parties.
Instant messaging allows users to transmit information undetected, and effectively punches a hole in the firewall, potentially exposing the client machine to unauthorized access through security vulnerabilities in the IM application itself.
Internet telephony uses your bandwidth for other people’s needs.

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Internet Proxy SafeSquid

Internet Proxy SafeSquid supports

transparent proxying, as well as the opaque-mode & WPAD.
creation profiles that allows the administrators to – allocate time and cumulative bandwidth – to users / networks
access control profiles
user Authentication via PAM.

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Dynamic Content Analysis

Dynamic Content Analysis for intelligent web content filter

Unlike Other content filtering methord this does not have any list of websites (domains/urls) ,

It blocks the occurrence of blocked Words

Dynamic Content Analysis works as follows:

As the user request a web page address.
Web pages are received to content filter engine.
The Dynamic Content Analysis engine compares the parsed text against categorized word and phrase lists.
Every time a match is made, a weighting value for the word or phrase is added to a page score.

Level 1: Will block a page if it contains one or more blocked words or one or more occurrence of any word.
Level 2: Will block a page if it contains two or more blocked words or two or more occurrence of any word.
Level 3: Will block a page if it contains three or more blocked word or threee or more occurrence of any word.

Once the page score reaches a threshold blocking value, the page will be blocked, and a “Blocked Page” Page is sent to the user’s Browser instead of the page Actually requested.
The strength of the Dynamic Content Analysis filter works on the number of occurrence of any word from the Blocked Words list. It looks for these words in webpages that are accessed.

Posted By admin in content-filtering | No Comments on August 9th, 2008

Squid Icap framework

Icap framework consists of :

ICAP enabled proxy server (Squid Web Proxy)
ICAP server (written in Python),
Set of proxylets (filters),
An IRML parser
Proxylet API (for authoring new proxylets) and
A rule parser (based on IRML, an XML specification).

ICAP framework for content adaptation

IRML Parser is a validating parser for IRML rule modules. IRML is the Intermediary Rule Markup Language that allows content consumers as well as content providers to specify rules for the execution of intermediary services.

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web content filter

Content Filter Checklist:

Protecting From all nightmares in business or organization.
No bottlenecks and No downtime.
web content filtering and reporting.
Stand alone appliances.
Scalable high speed filtering and reporting
Easily integrated into existing networks with no cumbersome modifications to environments
Stop unwanted content on your network
Reduce recreational Internet surfing during Official hours
Secure The network from web-based threats
Manage Internet traffic By optimizing network bandwidth

Content based filtering Should able to Block :

Internet messaging.
peer to peer application.
unauthorized media files.
virus
worms
trojan horses
Should comply with the Children’s Internet Protection Act (CIPA).

Posted By admin in content-filtering | No Comments on August 9th, 2008

Best Content Filter 2008 Product review

Best Of Content Filters

Vi ContentFilterA published IDC report estimates that 30 to 40 percent of Internet use in the workplace today is unrelated to business. The same report shows that Companies lose up to $3,000 per year per employee due to nonbusiness related Internet activity. Web cache services and proxy services go a long way towards the optimization of internet usage. ViContentFilter is a platform-independent Open Source based server that provides white-lists and filtering rules to block urls and contents that are not relevant to business. ViContentFilter solution is directed at business organizations, schools and libraries. ViContentFilter functionality is based on content filtering rules. It employs comprehensive, leading-edge and constantly evolving filtering rules for a host of content categories. The update of filtering rules is automatic and requires no operator intervention.

ViContentFilter can be deployed as
1. Stand alone web accelerator or
2. Web filter or
3. Combination of accelerator and filter.

Key Features : Open Source based solution–Spam Filtering
>>> Easy to use GUI Administration, monitor and report tools
>>> Automatic updates of filter rules
>>> Customized allow list and block list
>>> Comprehensive control options (IP, MAC, port,domain, user, time)
>>> Customizable filtering policies with intelligent defaults
>>> Update issue notification
>>> Specific user control

Key Benefits–Secured Web Browsing
–> Increase employee productivity and save network bandwidth
–> Plug and Play with your existing network environment
–> Total control over allowing relevant web access for your business usage
–> Browser based administration, live and historical customized reports.
–> You provide the hardware and we deploy the solution
–> Deployable in 24-72 hours
–> Automatic update of rules database
Visit Official >> VISOLVE CONTENT FILTER

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spam filter rules

Spam Filter Rules

Filtering by global rules or rules specific to a user or group.

Customize filtering by category, site, directory, or page.

Customize filtering by protocol or file type.

Manage web access by time of day.

Enable safer searching on major search engines.

Filter any client machine, irrespective of the operating system or web browser used

Posted By admin in content-filtering | No Comments on August 9th, 2008

Squid ICAP Protocol

Http protocol and ICAP Protocol

ICAP is a request/response protocol similar in semantics and usage to HTTP/1.1.

Proxy-based solution for online adaptation of the contents that a user browses over the Internet.

The user can also specify a set of rules under which the different filters/content adaptors get invoked.

ICAP (Internet Content Adaptation Protocol) is a protocol aimed at supporting HTTP content adaptation.
ICAP is Used for executing a “remote procedure call” on HTTP messages.
An ICAP client passes an HTTP message to the ICAP server.
An ICAP server can support services requested by clients.
The ICAP protocol is aimed at providing simple object-based content vectoring for HTTP services.
The server processes the message and sends a response back to the client.
Messages can be either HTTP requests or HTTP responses.
An ICAP client can be either a Web proxy server or a Web client.
ICAP is a protocol designed to off-load specific Internet-based content to dedicated servers, thereby freeing up resources and standardizing the way in which features are implemented.
Used For content filtering software.

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Internet filter

Web Content control software:

Also called as

Censorware
web filtering software

Web content filtering software:

webfilter used to restrict material delivered over the internet.
Internet filtering software block pornography, by analysing text and images from any web-page, including webmail services like Hotmail, Yahoo!, Gmail, etc.
It can stop people from querying search engines for pornography or jobs, etc.
web filtering software can stop people from logging into personal email sites, or forums & blogs, or instant messengers & chats.
web filtering software block pop-ups, spyware, or any other malicious content.
web filtering software can use categorised web-site databases to allow and deny access

Posted By admin in content-filtering | No Comments on August 9th, 2008

Technical Experts Zone Blogs

Zone Links

Internet Proxy SafeSquid supports

Dynamic Content Analysis for intelligent web content filter

Dynamic Content Analysis works as follows:

As the user request a web page address.

Web pages are received to content filter engine.

The Dynamic Content Analysis engine compares the parsed text against categorized word and phrase lists.

Every time a match is made, a weighting value for the word or phrase is added to a page score.

Once the page score reaches a threshold blocking value, the page will be blocked, and a “Blocked Page” Page is sent to the user’s Browser instead of the page Actually requested.

The strength of the Dynamic Content Analysis filter works on the number of occurrence of any word from the Blocked Words list. It looks for these words in webpages that are accessed.

ICAP enabled proxy server (Squid Web Proxy)

ICAP server (written in Python),

Set of proxylets (filters),

An IRML parser

Proxylet API (for authoring new proxylets) and

A rule parser (based on IRML, an XML specification).

ICAP framework for content adaptation

IRML Parser is a validating parser for IRML rule modules. IRML is the Intermediary Rule Markup Language that allows content consumers as well as content providers to specify rules for the execution of intermediary services.

Content Filter Checklist:

Protecting From all nightmares in business or organization.

No bottlenecks and No downtime.

web content filtering and reporting.

Stand alone appliances.

Scalable high speed filtering and reporting

Easily integrated into existing networks with no cumbersome modifications to environments

Stop unwanted content on your network

Reduce recreational Internet surfing during Official hours

Secure The network from web-based threats

Manage Internet traffic By optimizing network bandwidth

Content based filtering Should able to Block :

Internet messaging.

peer to peer application.

unauthorized media files.

virus

worms

trojan horses

Should comply with the Children’s Internet Protection Act (CIPA).

Best Of Content Filters

Http protocol and ICAP Protocol

Web Content control software:

Censorware

web filtering software

Web content filtering software:

webfilter used to restrict material delivered over the internet.

Internet filtering software block pornography, by analysing text and images from any web-page, including webmail services like Hotmail, Yahoo!, Gmail, etc.

It can stop people from querying search engines for pornography or jobs, etc.

web filtering software can stop people from logging into personal email sites, or forums & blogs, or instant messengers & chats.

web filtering software block pop-ups, spyware, or any other malicious content.

web filtering software can use categorised web-site databases to allow and deny access