STIGQter: STIG Summary: IBM z/OS ACF2 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 INACTIVE statement properly specified.

DISA Rule

SV-223614r533198_rule

Vulnerability Number

V-223614

Group Title

SRG-OS-000163-GPOS-00072

Rule Version

ACF2-TN-000070

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.

Weight

10

Fix Recommendation

Configure the PROFILE.TCPIP file as 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.

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

The TELNETPARMS INACTIVE statement is coded within each TELNETPARMS statement block and specifies a value between 1 and 900.

INACTIVE statements should not be coded with a value greater than 900 or 0. 0 disables the inactivity timer check.

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

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-223614

Documentable

False

Rule Version

ACF2-TN-000070

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

4100

Comments