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Bug 1452681 - firewalld: ERROR: INVALID_MODULE: nf_nat_ftp
Summary: firewalld: ERROR: INVALID_MODULE: nf_nat_ftp
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: firewalld
Version: 7.3
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: 7.4
Assignee: Eric Garver
QA Contact: Tomas Dolezal
URL:
Whiteboard:
Depends On:
Blocks: 1420851 1470965 1472751
TreeView+ depends on / blocked
 
Reported: 2017-05-19 13:09 UTC by dbodnarc
Modified: 2020-06-11 13:51 UTC (History)
5 users (show)

Fixed In Version: firewalld-0.4.4.4-7.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-04-10 10:30:16 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHEA-2018:0702 0 None None None 2018-04-10 10:31:37 UTC

Description dbodnarc 2017-05-19 13:09:17 UTC 
Description of problem:
When I restart firewalld - it successfully unloads the firewall netfilter kernel modules and loads just the modules that are needed for the new configuration:
# systemctl restart firewalld
or
# firewall-cmd --complete-reload

The actual problem is that firewalld unloads netfilter modules which cannot be included in its configuration: we cannot include nf_nat_ftp module into firewalld configuration:

as per manual page `man firewall-cmd`:
------------------------------------------------------------------
       --permanent --service=service --add-module=module
           Add a new module to the permanent service.
------------------------------------------------------------------
to include `nf_nat_ftp` kernel module for ftp service I used the mentioned syntax, but once tried I received the following error:
Error: INVALID_MODULE: nf_nat_ftp

Are there any limitations for the kernel modules which can be included?

Version-Release number of selected component (if applicable):
> RHEL7.3
# rpm -q firewalld kernel
firewalld-0.4.3.2-8.el7.noarch
kernel-3.10.0-514.el7.x86_64

How reproducible:
# firewall-cmd --permanent --service=ftp --add-module=nf_nat_ftp
Error: INVALID_MODULE: nf_nat_ftp

Actual results:
Error: INVALID_MODULE: nf_nat_ftp

Expected results:
success
Comment 2 Tomas Dolezal 2017-05-22 12:50:38 UTC 
the above command suceeded in newer version, but the module is still not loadable by firewalld due to 'nf_conntrack_' built-in prefix requirement

# rpm -q firewalld
firewalld-0.4.4.4-3.el7.noarch
# firewall-cmd --permanent --service=ftp --add-module=nf_nat_ftp
success
# firewall-cmd --add-service ftp
Error: INVALID_HELPER: nf_nat_ftp
# firewall-cmd --permanent --new-helper nat-ftp --module nf_nat_ftp
Error: INVALID_MODULE: 'nf_nat_ftp' does not start with 'nf_conntrack_'
Comment 3 Thomas Woerner 2017-05-22 16:12:26 UTC 
Fixed upstream:
https://github.com/t-woerner/firewalld/commit/577668e9b788e9982e90f331d934aaa8d79cae56
https://github.com/t-woerner/firewalld/commit/f0109e044e5601fba20d42db24c25e8e8cf804a0
https://github.com/t-woerner/firewalld/commit/af59d816c92e0391d118949542eb19bcf8b74580
https://github.com/t-woerner/firewalld/commit/89a186db02dd3776dce4105d1266b4863b3b4e8b
https://github.com/t-woerner/firewalld/commit/34558ad775afd9476c4ec5373b9bc9ee03a195af

These patches are adding code to be able to identify NAT helpers and also to load a matching NAT helper if the conntrack helper is used.
Comment 7 Tomas Dolezal 2017-08-08 09:40:54 UTC 
granting qa_ack for 7.5; RPL
Comment 13 errata-xmlrpc 2018-04-10 10:30:16 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2018:0702
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