In some cases, the ports used for accessing SAP CRM are non-standard to provide better security. In general, all ports used by the SAP backend systems can be freely configured by the SAP application administrator. The standard HTTP 80 and HTTPS 443 ports for Internet-facing traffic are also supported and may be used during the configuration. However, the purpose of an ADC is to provide standard ports 80/443 for the Internet-facing traffic and route that traffic to non-standard ports used on the SAP backend systems as a passive security measure.