sjat
b10a33f439
base__firewall_input_only renders the forward chain policy accept (host-local INPUT filtering only) for hosts that forward container/NAT traffic; defaults false so real service hosts keep the forward default-deny. base__firewall_admin_addrs adds operator-workstation LAN sources to the SSH allow-list alongside wt0 + ssh-from-control. Molecule locks the secure default + the admin rule. Mesh-hardening 2/3 (ADR-020/021). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
105 lines
4.1 KiB
YAML
105 lines
4.1 KiB
YAML
---
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- name: Verify
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hosts: all
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become: true
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gather_facts: false
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tasks:
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- name: Read the rendered ruleset
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ansible.builtin.slurp:
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src: /etc/nftables.conf
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register: ruleset
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- name: Decode it
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ansible.builtin.set_fact:
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nft: "{{ ruleset.content | b64decode }}"
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- name: Assert default-deny input policy and management plane
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ansible.builtin.assert:
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that:
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- "'type filter hook input priority 0; policy drop;' in nft"
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- "'ct state established,related accept' in nft"
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- "'iifname \"wt0\" tcp dport 22 accept' in nft"
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- "'ip saddr 10.10.0.99 tcp dport 22 accept' in nft"
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fail_msg: >-
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input chain is missing default-deny, the wt0 SSH allow,
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or the ssh-from-control management-plane rule
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- name: Assert the lan->reverse_proxy:443 ingress rule (zone source)
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ansible.builtin.assert:
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that:
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- "'10.30.0.0/24' in nft"
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- "'tcp dport 443 accept' in nft"
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fail_msg: "missing lan->443 rule for reverse_proxy"
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- name: Assert the srv->photoprism:2342 ingress rule (zone source)
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ansible.builtin.assert:
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that:
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- "'10.20.0.0/24' in nft"
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- "'tcp dport 2342 accept' in nft"
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fail_msg: "missing srv->2342 rule for photoprism"
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- name: Assert the public->stun:3478/udp ingress rule (0.0.0.0/0 source)
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ansible.builtin.assert:
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that:
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- "'0.0.0.0/0' in nft"
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- "'udp dport 3478 accept' in nft"
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fail_msg: "missing public->3478/udp rule for netbird_stun"
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- name: Assert the docker_host extension hook is present
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ansible.builtin.assert:
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that:
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- "'include \"/etc/nftables.d/*.nft\"' in nft"
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fail_msg: "missing drop-in include hook"
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- name: Assert the forward chain defaults to policy drop (input_only off)
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ansible.builtin.assert:
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that:
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- "'hook forward priority 0; policy drop;' in nft"
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fail_msg: >-
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forward chain must default to policy drop when base__firewall_input_only is
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false (container isolation stays the norm on real service hosts)
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- name: Assert the admin-addr SSH allow rule (operator workstation on the LAN)
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ansible.builtin.assert:
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that:
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- "'ip saddr 10.30.0.77 tcp dport 22 accept' in nft"
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fail_msg: "missing admin-addr SSH allow rule from base__firewall_admin_addrs"
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- name: Syntax-check the rendered ruleset (no apply)
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ansible.builtin.command: nft -c -f /etc/nftables.conf
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changed_when: false
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- name: Sshd drop-in present and config valid
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ansible.builtin.command: sshd -t
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changed_when: false
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- name: PasswordAuthentication is disabled
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ansible.builtin.command: grep -q '^PasswordAuthentication no' /etc/ssh/sshd_config.d/10-boma.conf
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changed_when: false
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- name: Fail2ban sshd jail configured
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ansible.builtin.command: grep -q '^\[sshd\]' /etc/fail2ban/jail.d/sshd.local
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changed_when: false
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- name: ListenAddress bound to the fixture mesh IP (mesh-only mode)
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ansible.builtin.command: grep -q '^ListenAddress 100.99.0.1$' /etc/ssh/sshd_config.d/10-boma.conf
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changed_when: false
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- name: Sysctl drop-in for ip_nonlocal_bind is present
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ansible.builtin.command: grep -q '^net.ipv4.ip_nonlocal_bind=1' /etc/sysctl.d/60-boma-nonlocal-bind.conf
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changed_when: false
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- name: Kernel ip_nonlocal_bind is live in this netns
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ansible.builtin.command: sysctl -n net.ipv4.ip_nonlocal_bind
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register: _nonlocal
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changed_when: false
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failed_when: _nonlocal.stdout | trim != '1'
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# mesh concern: enabled but manage=false must be a clean no-op (no install/enrol)
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- name: Check whether netbird got installed
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ansible.builtin.command: which netbird
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register: _nb
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changed_when: false
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failed_when: false
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- name: Assert mesh manage=false installed nothing
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ansible.builtin.assert:
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that:
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- _nb.rc != 0
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fail_msg: "netbird must not be installed when base__mesh_manage is false"
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success_msg: "mesh concern is a clean no-op under manage=false"
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