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Comsift, Inc.
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Comsift Technical Support Bulletin
March 15, 2012
QOS Alert — For ComSifter 'Pro' units

The customer called Comsift Technical Support, complaining about slow upload speeds. The ComSifter had been running without incident for four (4) years. The customer had recently upgraded their Internet connection from a very slow 6 Mbps download/0.5 Mbps upload to a much faster 20 Mbps download/4 Mbps upload.

After the upgrade, the customer’s users complained that they saw no difference in browsing performance.

When the customer ran speed tests, they were seeing download speeds nowhere near the 20 Mbps and a significantly slower upload speed of 0.4 Mbps.

#comsift   #comsifter   #QOS   #qualityofservice   #contentfiltering  
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Comsift White Paper
March 2012
Clearing WPAD Settings

Instructions to clear WPAD settings on a Windows client.

#comsift   #comsifter   #contentfiltering   #WPAD  
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Comsift Technical Service Bulletin
March 2, 2012
Changes in Comsift Blacklist

Comsift is very proud of its ability to block social networking and time-wasting sites. To date, we have banned Myspace, Facebook, YouTube, and many more such sites via the blacklist—but in doing so we have removed some of the flexibility of the ComSifter.

#comsift   #comsifter   #contentfiltering   #blacklist   #socialmedia  
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Comsift White Paper
October 2011
Case of the New Cable/DSL Modem

At least once a week Comsift Technical Support receives a service call where the customer’s Internet Service Provider (ISP) has replaced the their cable/DSL modem and nothing works; or the customer has switched ISPs, received a new cable/DSL modem, and nothing works.

Typically, the customer asks, “How do I reconfigure the Comsifter so everything works?” If only it was that easy.

#comsift   #comsifter   #modem   #ISP   #contentfiltering
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Comsift Technical Service Bulletin
November 11, 2011
Load Warnings — and How to Improve the Performance of the ComSifter

Comsift Support receives multiple support calls per week related to “Load Warnings” and why the ComSifter may slow down when a large group of users get online at the same time.

Network administrators may receive emails from the ComSifter (if this has been setup on the ComSifter: Maintenance > Utilities > Email Notification Parameters > Second email recipient). These emails may look similar to the following:

The first message is:
• Out of spec, System load is 100 % over the past 5 minutes (<90% normal)

A follow-up message states:
• In spec, System load is 59 % over the past 5 minutes (<90% normal)

#comsift   #comsifter   #contentfiltering   #loadwarning   #outofspec   #inspec   
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Comsift White Paper
October 2011
The Tale of Ultrasurf

Local network administrator calls Comsift Technical Support stating that students are running a program called Ultrasurf from flash drives that were preloaded at home (or elsewhere, off the school’s network).

#comsift   #comsifter   #contentfiltering   #ultrasurf   #port443   #port53   #firewall   #port8080   #proxy  
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Comsift Technical Service Bulletin
October 7, 2011
Case of the New Cable/DSL Modem

At least once a week Comsift Technical Support receives a service call where the customer’s Internet Service Provider (ISP) has replaced the their cable/DSL modem and nothing works; or the customer has switched ISPs, received a new cable/DSL modem, and nothing works.

Typically, the customer asks, “How do I reconfigure the Comsifter so everything works?” If only it was that easy.

#comsift   #comsifter   #modem   #ISP   #contentfiltering  
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Comsift White Paper
August 2011
Filtered Church/Public Access — and School Campus is also Filtered

The church, with associated school that shares an Internet connection, wants both the school and church filtered. The school computers are using ComSifter Identification, the church computers are not.

#contentfiltering   #comsift   #comsifter   #church   #school   #education  
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Comsift Technical Service Bulletin
May 12, 2011
Changes to Google and How it May Affect You

For reasons that are beyond Comsift’s control, Google has recently been making changes to how their services are accessed. More and more they are trying to obscure the identity of the user making search inquiries.

These changes affect how ComSifter filters Google. This document details what the changes are, and how you can protect your users.

#Google   #contentfiltering   #HTTPS   #comsift   #comsifter   #tsb  
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Comsift White Paper
September 2010
Unfiltered Church Access — but School Remains Filtered

The church, with associated school that shares an Internet connection, wants the school filtered, but open access to church parishioners and personnel.

#church   #school   #education   #contentfiltering   #comsift   #comsifter  
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