DATA_SSL_CIPHER_LIST - UCMD Manager configuration option
Description
The DATA_SSL_CIPHER_LIST option specifies one or more SSL/TLS cipher suites that are acceptable to use for network communications on the data session, which is used for standard I/O file transmission.
Usage
Method | Syntax | IBM i | UNIX | Windows | z/OS |
Command Line, Short Form | n/a | ||||
Command Line, Long Form | -data_ssl_cipher_list cipherlist | ||||
Environment Variable | UCMDDATASSLCIPHERLIST=cipherlist | ||||
Configuration File Keyword | data_ssl_cipher_list cipherlist | ||||
STRUCM Parameter | DTACPHRLST(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 | 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. |
NULL-SHA256 | No encryption and SHA-2 256-bit message digest. |
NULL-SHA | No encryption and SHA-1 message digest. |
NULL-MD5 | No encryption and MD5 message digest. |
Note
To create an unencrypted data session, you must use the DEFAULT_CIPHER configuration option.