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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
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_'
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
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