Fix rule ip6tables_rules_for_open_ports and add to ubuntu2404 controls

[mpurg]

Description:

• Fixed sce for rule ip6tables_rules_for_open_ports to also consider the protocol of the open port (tcp/udp) and match on rules which use --multiport.
• Added tests for rule
• Added rule to Ubuntu 24.04 CIS control 4.4.3.4 (Ensure ip6tables firewall rules exist for all open ports)

Rationale:

• The sce incorrectly passed when an ip6tables rule was defined for the open port but with the wrong protocol.
• The sce was also improved to match ip6tables rules where ports are defined with --multiport.

Notes:

• Automatus tests pass locally in KVM, but fail in podman. Same reason as in Update rule set_ip6tables_default_rule #12659 .

[openshift-ci]

Hi @mpurg. Thanks for your PR.

I'm waiting for a ComplianceAsCode member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[github-actions]

Start a new ephemeral environment with changes proposed in this pull request:

rhel8 (from CTF) Environment (using Fedora as testing environment)

Fedora Testing Environment

Oracle Linux 8 Environment

[codeclimate]

Code Climate has analyzed commit 43a203a and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 60.9% (0.0% change).

View more on Code Climate.

[dodys]

lgtm, thanks!