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CTL_SSL_CIPHER_LIST - UCTL Manager configuration option

CTL_SSL_CIPHER_LIST - UCTL Manager configuration option

Jul 15, 2024

 Description

The CTL_SSL_CIPHER_LIST option specifies one or more SSL/TLS cipher suites that are acceptable to use for network communications on the control session, which is used for component internal communication.

Usage

Method

Syntax

IBM i

UNIX

Windows

z/OS

Command Line, Short Form

n/a

 

 

 

 

Command Line, Long Form

-ctl_ssl_cipher_list cipherlist

 

Environment Variable

UCTLCTLSSLCIPHERLIST=cipherlist

 

Configuration File Keyword

ctl_ssl_cipher_list cipherlist

STRUCT Parameter

CTLCPHRLST(cipherlist)

 

 

 

Values

cipherlist is a comma-separated list of SSL/TLS cipher suites. The following table identifies the list of SSL/TLS cipher suites supported for this option.

The list is in default order, with the most preferred suite first and the least preferred suite last.
 

Cipher Suite Name

Description

Cipher Suite Name

Description

AES256-GCM-SHA384

256-bit AES encryption in Galois Counter Mode, SHA-2 384-bit message digest.

AES256-SHA

256-bit AES encryption with SHA-1 message digest.

AES128-GCM-SHA256

128-bit AES encryption in Galois Counter Mode, SHA-2 256-bit message digest.

AES128-SHA

128-bit AES encryption with SHA-1 message digest.

ECDHE-RSA-AES256-GCM-SHA384

Ephemeral Elliptic Curve Diffie-Hellman Key Exchange, RSA authentication, 256-bit AES encryption in Galois Counter Mode, SHA-2 384-bit message digest.

ECDHE-ECDSA-AES256-GCM-SHA384

Ephemeral Elliptic Curve Diffie-Hellman Key Exchange, ECDSA authentication, 256-bit AES encryption in Galois Counter Mode, SHA-2 384-bit message digest.

ECDHE-RSA-AES128-GCM-SHA256

Ephemeral Elliptic Curve Diffie-Hellman Key Exchange, RSA authentication, 128-bit AES encryption in Galois Counter Mode, SHA-2 256-bit message digest.

ECDHE-ECDSA-AES128-GCM-SHA256

Ephemeral Elliptic Curve Diffie-Hellman Key Exchange, ECDSA authentication, 128-bit AES encryption in Galois Counter Mode, SHA-2 256-bit message digest.

RC4-SHA

128-bit RC4 encryption with SHA-1 message digest.

RC4-MD5

128-bit RC4 encryption with MD5 message digest.

DES-CBC3-SHA

128-bit Triple-DES encryption with SHA-1 message digest.

DES-CBC-SHA
                                     

128-bit DES encryption with SHA-1 message digest.
 

Note

As of Universal Agent 6.7.0.0, DES-CBC-SHA is supported only on HP-UX.
 
Additionally, any Agents on HP-UX that accept connections from, or attempt connections to, Agents on other platforms must be configured with at least one currently supported cipher suite besides DES-CBC-SHA. Therefore, those HP-UX Agents cannot be configured only with DES-CBC-SHA in their list of cipher suites.