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FTPS

FTP Secure

Enhanced Definition

Secure version of FTP using SSL/TLS encryption for protected file transfers, providing confidentiality and integrity for data in transit between mainframes and other systems.

Key Characteristics

- SSL/TLS encryption of control and data channels
- Server and client authentication
- Protection against eavesdropping and tampering
- Certificate-based security
- Compliance with security standards
FTPS Modes:
- Implicit FTPS: SSL/TLS from connection start (port 990)
- Explicit FTPS: Upgrade to SSL/TLS via AUTH command (port 21)
Security Features:
- Data encryption (128-bit, 256-bit)
- Server certificate validation
- Client certificate authentication (optional)
- Secure password transmission
- Encrypted directory listings
z/OS FTPS Configuration:
- AT-TLS (Application Transparent TLS) integration
- Certificate management via RACF
- Key ring configuration
- Policy definitions
- SSL/TLS protocol versions
- AUTH TLS: Initiate secure session
- PBSZ: Protection buffer size
- PROT: Data channel protection level
- CCC: Clear command channel

Use Cases

- Secure file transfers with external partners
- Compliance with data protection regulations
- Protecting sensitive business data
- Encrypted report distribution
- Secure automated file exchanges
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