3219363 - No Web Application Firewall (WAF) in front of custom application running in BTP CF

Custom application has been developed and deployed in BTP Cloud Foundry (CF). The custom application expose web service for external callers. However find there is no Web Application Firewall in front of custom application, which results in application at risk of exploitation because it can be easily accessed from internet. Want to know how to make WAF in place to secure custom application.

• SAP Business Technology Platform (BTP)

fire wall, firewall, protect, disruption, unauthorized change, disclosure, expose, api endpoint, invoke, neo, , KBA , BC-CP-CF-ROUTING , Cloud Foundry Runtime Ingress Routing Stack , BC-CP-CF-SEC-IAM , UAA, Authentication, Authorization, Trust Mgmnt , Problem