Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1279974

Summary:	Improve or replace netstat example
Product:	Red Hat Enterprise Linux 7	Reporter:	Robert Krátký <rkratky>
Component:	doc-Security_Guide	Assignee:	Mirek Jahoda <mjahoda>
Status:	CLOSED CURRENTRELEASE	QA Contact:	ecs-bugs
Severity:	unspecified	Docs Contact:
Priority:	high
Version:	7.3	CC:	hkario, rhel-docs
Target Milestone:	rc	Keywords:	Documentation
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-05-24 15:51:23 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1063913, 1063927, 1063934
Bug Blocks:	1275695, 1425467

Description Robert Krátký 2015-11-10 15:48:21 UTC

4.4.2
Output listing spans more than a single page is difficult to read. Suggest editing the output to only relevant lines that illustrate the concept. A better example may be to pass the LISTEN directive to netstat by passing the -l option:  For example:  netstat -tlnw.  Additionally, the ss utility (part of iproute) may be a better tool overall for this task.

Comment 3 Mirek Jahoda 2016-05-10 15:46:18 UTC

Hello, can you please check the chapter 4.4.2 [1] - I am not sure if three (short) examples are the best way to go. I have already checked some connected bugzillas and it seems we are still waiting for the functionality in the ss utility (SCTP) or kernel to be precise. There is a plenty of commented code in XML and I am (again) not sure if this is right. Thank you.
[1] http://jenkinscat.gsslab.pnq.redhat.com:8080/job/doc-Red_Hat_Enterprise_Linux-7-Security_Guide%20%28html-single%29/lastStableBuild/artifact/tmp/en-US/html-single/index.html#sec-Verifying_Which_Ports_Are_Listening

Comment 4 Robert Krátký 2016-05-13 18:15:19 UTC

Thanks Mirek. The suggested changes are OK. I fixed some minor language mistakes that were already there and improved the formatting of the command outputs.

This bug needs to stay open because the functionality has not been ported to RHEL yet. When the problems of the utilities are resolved, the section will need to be reviewed again (and the commented content will be used).

I suggest you add yourself to BZ#1063913, so that you can keep track of the development.

Comment 5 Mirek Jahoda 2017-04-27 09:41:49 UTC

I've reworked the whole Which Ports Are Listening section [1]. I'm going to leave the SCTP ports scanning separated at least for some time (to emphasize that this functionality is now properly working). It seems like the netstat utility is not deprecated (and it's installed by default) even in RHEL 7.4 (I've tried it in the Alpha compose) and therefore I think it would be better to mention both (netstat and ss).

[1] http://jenkinscat.gsslab.pnq.redhat.com:8080/job/doc-Red_Hat_Enterprise_Linux-7-Security_Guide%20(html-single)/lastStableBuild/artifact/tmp/en-US/html-single/index.html#sec-Verifying_Which_Ports_Are_Listening

[2] https://gitlab.cee.redhat.com/red-hat-enterprise-linux-documentation/doc-Red_Hat_Enterprise_Linux-7-Security_Guide/commit/40a88cbfc9d562ace36413aac4de62ee7a9350f7

Comment 6 Alicja Kario 2017-05-09 18:51:57 UTC

Looks good to me. r+

Comment 7 Mirek Jahoda 2017-05-24 15:51:23 UTC

The update has been published on the Customer Portal [1]

[1] https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7-Beta/html-single/Security_Guide/index.html#sec-Verifying_Which_Ports_Are_Listening