Don't allow output ssh and only allow dhclient if using dhcp
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parent
6084b1abb8
commit
6a692ac2d5
2 changed files with 12 additions and 7 deletions
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@ -1 +0,0 @@
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tcp dport ssh accept comment "Allow SSH"
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@ -7,7 +7,7 @@
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state: present
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notify: Start nftables service
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- name: Start nftables
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- name: Start and enable nftables
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become: true
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ansible.builtin.systemd:
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name: nftables
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@ -75,17 +75,23 @@
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- post-hooks.d/*
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notify: Restart nftables service
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- name: Copy default output rules
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- name: Check if server is using DHCP
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become: true
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ansible.builtin.shell:
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cmd: "for interface in $(ip -o link show up | awk -F: '{print $2}'); do grep -r $interface.*dhcp /etc/network; done"
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register: dhcp_grep
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changed_when: false
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- name: Copy dhclient output rule
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become: true
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ansible.builtin.copy:
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src: "{{ item }}"
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dest: "/etc/nftables/output.d/{{ item | basename }}"
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src: output.d/dhclient.conf
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dest: /etc/nftables/output.d/dhclient.conf
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owner: root
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group: root
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mode: 0640
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with_fileglob:
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- output.d/*
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notify: Restart nftables service
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when: dhcp_grep.stdout != ""
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- name: Setup netfilter.log
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become: true
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