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Determining Required Bandwidth

Bandwidth is the measure of a network's capacity or utilization, usually measured in terms of bits per second.

To ensure a smooth administration, AIR® recommends network bandwidth of at least 20 kilobits per second for each student taking the test at the same time.

Bandwidth Note

Bandwidth consumed by opening the secure browser and accessing a test for the first time is significantly more than when it is opened and accessed again because a lot of nontest content must be cached when the secure browser is first accessed.

Whitelisting URLs for Non-Testing Sites

  • digitaltesting.collegeboard.org
  • http://sso3.airast.org/auth/realms/collegeboard/account
  • https://cb.tide.airast.org

Whitelisting URLs for the TA and Student Testing Sites

Use a wildcard to whitelist these URLs at the root level because testing servers and satellites may be changed during the school year:

  • *.airast.org
  • *.tds.airast.org
  • *.cloud1.tds.airast.org
  • *.cloud2.tds.airast.org

Required Ports and Protocols

The table below lists the ports and protocols used by the test delivery system. Ensure that all necessary content filters, firewalls, and proxy servers are open.

Ports and Protocols for Test Delivery System

Port/Protocol Purpose
80/TCP HTTP (initial connection only)
443/TCP HTTPS (secure connection)

Configuring for Certificate Revocations

AIR servers present certificates to the clients. To check those certificates for revocation, use a certificate revocation list or an online certificate status protocol.

Certificate Revocation List

To use a certificate revocation list, your firewalls must allow this URL: http://crl.verisign.com/

Online Certificate Status Protocol (OCSP)

To use the OCSP, your firewalls must allow the domain names listed below. These patterned URLs are preferred because they are more robust:

  • *.thawte.com
  • *.geotrust.com
  • *.ws.symantec.com

If necessary, you can use fully qualified URLs instead:

  • oscp.thawte.com
  • oscp.geotrust.com
  • oscp.ws.symantec.com