secondsky/sap-btp-connectivity

SAP BTP Connectivity Skill

Related Skills

• sap-btp-cloud-platform: Use for platform fundamentals, BTP account setup, and integration patterns
• sap-btp-best-practices: Use for implementation guidance, security best practices, and production deployment
• sap-cap-capire: Use for CAP service connectivity, destination consumption, and secure API access
• sap-fiori-tools: Use for configuring Fiori app destinations and frontend connectivity
• sap-abap: Use when connecting to ABAP systems via RFC or implementing principal propagation

When to Use This Skill

Use this skill when configuring BTP destinations, Cloud Connector, OAuth flows, principal propagation, RFC/LDAP/MAIL/TCP connectivity, Kubernetes/Kyma connectivity proxies, multitenant destination access, or troubleshooting connectivity errors such as 405, 407, 503, and proxy failures.

Table of Contents

1. Overview
2. Quick Start
3. Connectivity Scenarios
4. Destination Types
5. Authentication Configuration
6. Cloud Connector Setup
7. Kubernetes/Kyma Connectivity
8. Common Issues & Troubleshooting
9. Security Best Practices
10. Critical Rules
11. Bundled Resources

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Overview

SAP BTP Connectivity provides secure access from SAP BTP applications to remote services across cloud, on-premise, and VPC environments.

Core Components

| Component | Purpose | |-----------|---------| | Destination Service | Manages connection metadata, authentication, routing | | Connectivity Service | Enables Kubernetes workloads via Cloud Connector | | Cloud Connector | Reverse proxy for secure on-premise tunneling | | Connectivity Proxy | Kubernetes component for on-premise access | | Transparent Proxy | Kubernetes component for unified destination access |

Supported Environments: Cloud Foundry, ABAP Environment, Kyma
Supported Protocols: HTTP/HTTPS, RFC, TCP (SOCKS5), LDAP/LDAPS, Mail

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Quick Start

Create HTTP Destination (Cloud Foundry)

1. Navigate: Connectivity > Destinations in BTP Cockpit
2. Select: Create > From Scratch
3. Configure:

   Name: my-destination
   Type: HTTP
   URL: https://api.example.com
   ProxyType: Internet
   Authentication: OAuth2ClientCredentials
   clientId: <your-client-id>
   clientSecret: <your-client-secret>
   tokenServiceURL: https://auth.example.com/oauth/token
   

Set Up Cloud Connector

1. Download from SAP Tools
2. Access: https://localhost:8443
3. Login: Administrator / manage (change immediately)
4. Add subaccount connection

Access Destination in Application (Node.js)

const { getDestination } = require('@sap-cloud-sdk/connectivity');
const destination = await getDestination({ destinationName: 'my-destination' });

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Connectivity Scenarios

Cloud-to-Cloud

ProxyType: Internet
Authentication: OAuth2ClientCredentials | OAuth2SAMLBearerAssertion

Cloud-to-On-Premise

ProxyType: OnPremise
Authentication: BasicAuthentication | PrincipalPropagation

Requires Cloud Connector installation in on-premise network.

On-Premise-to-Cloud (Service Channels)

For on-premise systems accessing SAP BTP services via Cloud Connector.

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Destination Types

| Type | Use Case | ProxyType | Common Authentication | |------|----------|-----------|----------------------| | HTTP | REST/OData APIs | Internet/OnPremise | OAuth2, Basic, Certificates | | RFC | SAP systems | OnPremise | Basic, PrincipalPropagation | | LDAP | Directory services | Internet | Basic, NoAuth | | MAIL | Email protocols | Internet | Basic, NoAuth | | TCP | Generic TCP | OnPremise | Basic |

Detailed configuration: See references/http-destinations.md, references/rfc-destinations.md, references/mail-tcp-ldap-destinations.md

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Authentication Configuration

OAuth2ClientCredentials (Service-to-Service)

Authentication: OAuth2ClientCredentials
clientId: <client-id>
clientSecret: <client-secret>
tokenServiceURL: https://auth.example.com/oauth/token

OAuth2SAMLBearerAssertion (User Propagation)

Authentication: OAuth2SAMLBearerAssertion
audience: <target-audience>
clientKey: <client-key>
tokenServiceURL: https://auth.example.com/oauth2/token
KeyStoreLocation: <certificate-location>

PrincipalPropagation (On-Premise SSO)

Authentication: PrincipalPropagation
ProxyType: OnPremise

Requires Cloud Connector X.509 certificate generation.

Complete reference: references/authentication-types.md (all 17+ types)

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Cloud Connector Setup

Installation

• Production: Windows MSI/Linux RPM packages (service registration)
• Development: Portable archive (manual execution)

Initial Configuration

1. Access UI: https://<hostname>:8443
2. Login: Administrator / manage
3. Change password immediately
4. Select mode: Master or Shadow
5. Add subaccount connection

Access Control

Configure on-premise resource access:

• Backend Types: ABAP System, SAP Gateway, Non-SAP System, SAP HANA
• HTTP Access Control: System mapping + resource paths + policies

High Availability

• Master-Shadow: Primary + backup with synchronized config
• Requirements: Stable network, separate machines, identical versions

Complete guide: references/cloud-connector.md

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Kubernetes/Kyma Connectivity

Connectivity Proxy

Enables Kubernetes workloads to access on-premise systems.

Installation:

helm install connectivity-proxy \
  oci://registry-1.docker.io/sapse/connectivity-proxy \
  --version <version> --namespace <namespace> -f values.yaml

Transparent Proxy

Exposes BTP destinations as Kubernetes Services.

Installation:

helm install transparent-proxy \
  oci://registry-1.docker.io/sapse/transparent-proxy \
  --version <version> --namespace <namespace> -f values.yaml

Usage: Create Destination Custom Resource, access as Kubernetes Service.

Complete configuration: references/kubernetes-connectivity.md

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Common Issues & Troubleshooting

HTTP Error Codes

| Code | Cause | Solution | |------|-------|----------| | 400 | Malformed request | Check request syntax | | 401 | Authentication failure | Verify credentials/tokens | | 405 | HTTPS instead of HTTP | Use http:// with port 20003 | | 407 | Missing authorization | Add Proxy-Authorization: Bearer <token> | | 503 | Cloud Connector offline | Check CC connection and Location ID |

Cloud Connector Issues

Cannot connect to subaccount:

• Verify region host URL
• Check firewall allows outbound HTTPS
• Verify subaccount credentials

Access denied to resource:

• Check access control configuration
• Verify virtual host mapping
• Check resource path policy

Complete troubleshooting: references/troubleshooting.md

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Security Best Practices

Cloud Connector

• Deploy in DMZ under IT control
• Change default password immediately
• Configure LDAP for user management
• Enable audit logging (All level for production)
• Deploy high availability (master + shadow)

Destinations

• Use OAuth over basic authentication
• Store credentials in Destination Service, not code
• Enable TLS for all connections
• Use mTLS for enhanced security

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Critical Rules

Always Do

• Change Cloud Connector default password immediately
• Use HTTPS for all external connections
• Configure access control before exposing resources
• Enable audit logging in production
• Cache tokens and destinations appropriately

Never Do

• Expose Cloud Connector UI to internet
• Store credentials in application code
• Skip access control configuration
• Modify Cloud Connector Tomcat config files
• Run multiple master instances (split-brain)

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Bundled Resources

Configuration References

• references/http-destinations.md - Complete HTTP destination properties
• references/rfc-destinations.md - RFC destination properties and pooling
• references/mail-tcp-ldap-destinations.md - Mail, TCP, LDAP configuration
• references/authentication-types.md - All 17+ authentication configurations

Setup & Configuration

• references/cloud-connector.md - Cloud Connector setup and configuration
• references/kubernetes-connectivity.md - Connectivity Proxy and Transparent Proxy
• references/destination-service-api.md - REST API reference

Advanced Topics

• references/advanced-configuration.md - MTA, config.json, chaining, ZTIS
• references/identity-propagation-scenarios.md - ABAP, NetWeaver Java, custom IDP
• references/operational-guides.md - Network zones, solution management
• references/connectivity-alternatives-and-config.md - Reverse proxy, user roles, RFC config

Development & SDK

• references/java-sdk-development.md - Java APIs, JCo, SAP Cloud SDK
• references/mail-protocols.md - SMTP, IMAP, POP3 configuration

Templates

• templates/destination-http-oauth.json - HTTP destination with OAuth template
• templates/destination-onpremise.json - On-premise destination template
• templates/connectivity-proxy-values.yaml - Helm values for Connectivity Proxy
• templates/transparent-proxy-values.yaml - Helm values for Transparent Proxy

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Documentation Links

• Official SAP Documentation: https://help.sap.com/docs/connectivity
• GitHub Repository: https://github.com/SAP-docs/btp-connectivity
• Destination API: https://api.sap.com/api/SAP_CP_CF_Connectivity_Destination
• Release Notes: https://help.sap.com/whats-new/cf0cb2cb149647329b5d02aa96303f56

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Last Updated: 2025-11-27
Next Review: 2026-02-27
Source: https://github.com/SAP-docs/btp-connectivity (383 files, 352+ analyzed)