Nagios Support Forum

I am trying to install Nagios XI on CentOS 6.9 to evaluate it. I have attempted installation multiple times, everytime rebuilding the VM beforehand. I receive the following error in the install.log file:

iptables: Applying firewall rules: [ OK ]
ip6tables: Applying firewall rules: ip6tables-restore v1.4.7: ip6tables-restore: unable to initialize table 'filter'

Error occurred at line: 3
Try `ip6tables-restore -h' or 'ip6tables-restore --help' for more information.

During the install, I receive the following:
Running './6-firewall'...
iptables: Applying firewall rules: [ OK ]
ip6tables: Applying firewall rules: ip6tables-restore v1.4.7: ip6tables-restore: unable to initialize table 'filter'

Error occurred at line: 3
Try `ip6tables-restore -h' or 'ip6tables-restore --help' for more information.
[FAILED]
RESULT=1

===================
INSTALLATION ERROR!
===================
Installation step failed - exiting.
Check for error messages in the install log (install.log).



iptables is disabled on this box.

Any help would be greatly appreciated.

Hello, @dhatha03. What is the output of:

service ip6tables status

If it is running please stop and disable it:

service ip6tables stop
chkconfig ip6tables off

Thank you for the reply. Looks like I might have found the issue. I have a config file under /etc/modprobe.d/ that had the following line in it:

options ipv6 disable=1

I went and commented this line out and reinstalled. It appears that there was no errors on installation and I can login via the web URL now.

Thank you again for your reply.

dhatha03 wrote:Thank you for the reply. Looks like I might have found the issue. I have a config file under /etc/modprobe.d/ that had the following line in it:

options ipv6 disable=1

I went and commented this line out and reinstalled. It appears that there was no errors on installation and I can login via the web URL now.

Thank you again for your reply.

Glad to hear it is resolved.

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