Firewall Considerations

Inbound Connections

Inbound Ports
Default Port Used for
80 HTTP
443 HTTPS
8080 HTTP
8443 HTTPS

Outbound Connections

Outbound Ports
Default Port Used for
21 FTP, FTPS
22 SFTP
25 SMTP*
80 Link checking**, Connectors
389 LDAP
443 Link checking**
636 LDAPS
990 FTPS
1433 SQL Server
1521 Oracle
3306 MySQL, MySQL Database Publishing

 

Note: As of Cascade CMS 8.13+, most system-generated emails will be sent via an external service (SendGrid). If you are not receiving emails from within the application, you may need to whitelist *.sendgrid.com at your email server to allow for deliveries. These emails will come from noreply@cascadecms.com. If you are using a proxy, Cascade CMS 8.16+ allows for configuring outbound connections for email as described in this article.
Note: Since end users can link to any URL and port, the external link check could require other outbound ports for specific URLs. In general, you should be ok with only allowing port 80 and port 443.