Bandwidth and Content Filter Recommendations

Bandwidth and Content Filter Recommendations

For optimal performance while using Classworks, we recommend the following content filter changes and bandwidth recommendations below.

Content Filter Recommendations

The district should whitelist the URLs (TCP ports 80 and 443) in their content filter and firewall settings:

  •     *.classworks.com (Classworks Management System)

  •     d1c2gqtemf6sa7.cloudfront.net (Classworks content CDN)

  •     cdn.mathjax.org (math expression rendering)


For those districts unable to whitelist using DNS names above, Classworks content uses Amazon CloudFront content delivery service for all it's instructional and assessment content. We would recommend whitelisting the IP addresses in Amazon knowledge base below:

https://forums.aws.amazon.com/ann.jspa?annID=2051

Bandwidth Recommendations

Many factors affect actual connection speed, including the following: proxy servers, firewalls, switches, and available bandwidth of the local network. The available bandwidth depends on the number of users and other applications running across the network.


If other bandwidth-intensive activities (VoIP, streaming audio/video, and general network traffic) are running on the same network segment as Classworks workstation, the performance of web-based application may suffer.


Recommended per student bandwidth

  •     512Kbps per student or faster


Classworks does not require sustained rates of bandwidth like video streaming. Classworks files are cached in the web browser for later use during activity play.

All devices connecting to wireless access points should be connecting using 802.11a/g/n. Access points (AP) is a shared medium and acts as a wireless hub, the performance of each user decreases as the number of users increases on an individual AP. It is not recommended that more than 24 clients associate with the AP because the throughput of the AP is reduced with each client that associates to the AP. Check with your wireless AP manufacturer for recommended number of client connections.

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