STIGQter: STIG Summary: IBM z/OS TSS Security Technical Implementation Guide Version: 8 Release: 2 Benchmark Date: 23 Apr 2021:

IBM z/OS PROFILE.TCPIP configuration for the TN3270 Telnet server must have the INACTIVE statement properly specified.

DISA Rule

SV-224069r561402_rule

Vulnerability Number

V-224069

Group Title

SRG-OS-000163-GPOS-00072

Rule Version

TSS0-TN-000050

Severity

CAT II

CCI(s)

• CCI-001133 - The information system terminates the network connection associated with a communications session at the end of the session or after an organization-defined time period of inactivity.
• CCI-002361 - The information system automatically terminates a user session after organization-defined conditions or trigger events requiring session disconnect.

Weight

10

Fix Recommendation

Configure the configuration statements in the PROFILE.Tn3270 to conform to the specifications 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 INACTIVE statement is coded either within the TELNETGLOBALS or within each TELNETPARMS statement block and specifies a value between "1" and "900".

Check Contents

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

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.

TELNETPARMS Block (one defined for each port the server is listening to, typically ports 23 and 992)

If the TELNETPARMS INACTIVE statement is coded within each TELNETPARMS statement block and specifies a value between "1" and "900", this is not a finding.

NOTE: Effective in z/OS release 1.2, the INACTIVE statement can appear in both TELNETGLOBAL and TELNETPARM statement blocks.

Vulnerability Number

V-224069

Documentable

False

Rule Version

TSS0-TN-000050

Severity Override Guidance

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

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.

TELNETPARMS Block (one defined for each port the server is listening to, typically ports 23 and 992)

If the TELNETPARMS INACTIVE statement is coded within each TELNETPARMS statement block and specifies a value between "1" and "900", this is not a finding.

NOTE: Effective in z/OS release 1.2, the INACTIVE statement can appear in both TELNETGLOBAL and TELNETPARM statement blocks.

Check Content Reference

M

Target Key

4102

Comments