Firewalls and web filters help protect your computer by blocking unauthorized access and preventing malicious activities, such as malware attacks. However, they may occasionally block legitimate websites, including VitalSource. This article provides recommended settings to ensure your firewall allows proper access to VitalSource without compromising security.

Established Domains

If your server policy restricts network traffic, please add our established domains listed below to your permit list.
We advise against trying to create a permit list of traffic to VitalSource based on IP addresses; if you are doing so, please know that their IP location may change without any warning.

*.vitalbook.com

*.vitalsource.com

*.cloudfront.net

*.googleapis.com

*.sendgrid.net

*.storage.googleapis.com/vst-mimeo-prod

*.print.vitalsource.com/

*.storage.googleapis.com/

*.textbookx.com

*.akademos.com

*.apple.com

*.google.com

*.crashlytics.com

Established Ports

Port 80

Port 443

Port 22 (NOTE: This port is only needed if you are publishing content to VitalSource via FTP)