IBM z/OS SMF recording options for the TN3270 Telnet Server must be properly specified.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223759	RACF-OS-000030	SV-223759r853610_rule		Medium

Description
The TN3270 Telnet Server can provide audit data in the form of SMF records. The SMF data produced provides information about individual sessions. This data includes the VTAM application, the remote and local IP addresses, and the remote and local IP port numbers. Failure to collect and retain audit data may contribute to the loss of accountability and hamper security audit activities. Satisfies: SRG-OS-000392-GPOS-00172, SRG-OS-000032-GPOS-00013

Description

The TN3270 Telnet Server can provide audit data in the form of SMF records. The SMF data produced provides information about individual sessions. This data includes the VTAM application, the remote and local IP addresses, and the remote and local IP port numbers. Failure to collect and retain audit data may contribute to the loss of accountability and hamper security audit activities. Satisfies: SRG-OS-000392-GPOS-00172, SRG-OS-000032-GPOS-00013

STIG	Date
IBM z/OS RACF Security Technical Implementation Guide	2023-06-13

Details

Check Text ( C-25432r514965_chk )
Refer to the Profile configuration file specified on the PROFILE DD statement in the TCPIP started task JCL. If the following configuration statement settings are in effect in the TCP/IP Profile configuration data set, this is not a finding. NOTE: If the INCLUDE statement is coded in the TCP/IP Profile configuration data set, the data set specified on this statement must be checked for the following items as well. The TELNETPARMS SMFINIT statement is coded with the TYPE119 operand within each TELNETPARMS statement block. The TELNETPARMS SMFTERM statement is coded with the TYPE119 operand within each TELNETPARMS statement block. Note: The SMFINIT and SMFTERM statement can appear in both TELNETGLOBAL and TELNETPARM statement blocks. If duplicate statements appear in the TELNETGLOBALS, TELNETPARMS, Telnet uses the last valid statement that was specified.

Check Text ( C-25432r514965_chk )

Refer to the Profile configuration file specified on the PROFILE DD statement in the TCPIP started task JCL.

If the following configuration statement settings are in effect in the TCP/IP Profile configuration data set, this is not a finding.

NOTE: If the INCLUDE statement is coded in the TCP/IP Profile configuration data set, the data set specified on this statement must be checked for the following items as well.

The TELNETPARMS SMFINIT statement is coded with the TYPE119 operand within each TELNETPARMS statement block.

The TELNETPARMS SMFTERM statement is coded with the TYPE119 operand within each TELNETPARMS statement block.

Note: The SMFINIT and SMFTERM statement can appear in both TELNETGLOBAL and TELNETPARM statement blocks. If duplicate statements appear in the TELNETGLOBALS, TELNETPARMS, Telnet uses the last valid statement that was specified.

Fix Text (F-25420r514966_fix)
Configure the TELNETPARMS SMFINIT and SMFTERM statements in the PROFILE.TCPIP file to conform to the requirements specified below. NOTE: If the INCLUDE statement is coded in the TCP/IP Profile configuration file, the data set specified on this statement must be checked for the following items as well. The TELNETPARMS SMFINIT statement is coded with the TYPE119 operand within each TELNETPARMS statement block. The TELNETPARMS SMFTERM statement is coded with the TYPE119 operand within each TELNETPARMS statement block. Note: The SMFINIT and SMFTERM statement can appear in both TELNETGLOBAL and TELNETPARM statement blocks. If duplicate statements appear in the TELNETGLOBALS, TELNETPARMS, Telnet uses the last valid statement that was specified.

Fix Text (F-25420r514966_fix)

Configure the TELNETPARMS SMFINIT and SMFTERM statements in the PROFILE.TCPIP file to conform to the requirements specified below.

NOTE: If the INCLUDE statement is coded in the TCP/IP Profile configuration file, the data set specified on this statement must be checked for the following items as well.

The TELNETPARMS SMFINIT statement is coded with the TYPE119 operand within each TELNETPARMS statement block.

The TELNETPARMS SMFTERM statement is coded with the TYPE119 operand within each TELNETPARMS statement block.

Note: The SMFINIT and SMFTERM statement can appear in both TELNETGLOBAL and TELNETPARM statement blocks. If duplicate statements appear in the TELNETGLOBALS, TELNETPARMS, Telnet uses the last valid statement that was specified.