ansible/roles/nftables_infra/templates/nftables.d/60-forward.conf.j2

{{ ansible_managed | comment }}

table inet forward {

	chain conntrack {
		ct state vmap {
			established: accept,
			related: accept,
			invalid: drop,
		}
	}

	chain forward_to_public_server {
		jump conntrack
	}

	chain forward_to_server {
		jump conntrack

		ip6 saddr $infra_ipv6 ip6 daddr $log_infra_ipv6 jump {
			tcp dport 2514 counter accept
			udp dport 514 counter accept
		}

		ip saddr $infra_ipv4 ip daddr $log_infra_ipv4 jump {
			tcp dport 2514 counter accept
			udp dport 514 counter accept
		}

		ip6 saddr $prom_infra_ipv6 tcp dport 9100 counter accept
		ip saddr $prom_infra_ipv4 udp dport 161 counter accept

		ip6 saddr $bastion_ipv6 tcp dport ssh accept
		ip saddr $bastion_ipv4 tcp dport ssh accept
	}

	chain forward_to_backbone {
	}

	chain forward_to_ups {
		jump conntrack

		ip6 saddr $prom_infra_ipv6 udp dport 161 counter accept
		ip saddr $prom_infra_ipv4 udp dport 161 counter accept

		ip6 saddr $bastion_ipv6 tcp dport ssh accept
		ip saddr $bastion_ipv4 tcp dport ssh accept
	}

	chain forward_to_bmc {
		jump conntrack

		ip6 saddr $prom_infra_ipv6 udp dport 161 counter accept
		ip saddr $prom_infra_ipv4 udp dport 161 counter accept

		ip6 saddr $bastion_ipv6 tcp dport ssh accept
		ip saddr $bastion_ipv4 tcp dport ssh accept
	}

	chain forward_to_pve {
		jump conntrack

		ip6 saddr $prom_infra_ipv6 tcp dport 9100 counter accept
		ip saddr $prom_infra_ipv4 tcp dport 9100 counter accept

		ip6 saddr $bastion_ipv6 tcp dport ssh accept
		ip saddr $bastion_ipv4 tcp dport ssh accept
	}

	chain forward_to_router {
		jump conntrack

		ip6 saddr $prom_infra_ipv6 tcp dport 9100 counter accept
		ip saddr $prom_infra_ipv4 tcp dport 9100 counter accept

		ip6 saddr $bastion_ipv6 tcp dport ssh accept
		ip saddr $bastion_ipv4 tcp dport ssh accept
	}

	chain forward_to_internet {
		jump conntrack

		ip6 saddr $egress_internet_ipv6 counter accept
		ip saddr $egress_internet_ipv4 counter accept
	}

	chain forward {
		type filter hook forward priority filter
		policy drop

		iif lo accept

		ip6 daddr vmap {
			$public_server_ipv6: goto forward_to_public_server,
			$server_ipv6: goto forward_to_server,
			$backbone_ipv6: goto forward_to_backbone,
			$ups_ipv6: goto forward_to_ups,
			$bmc_ipv6: goto forward_to_bmc,
			$pve_ipv6: goto forward_to_pve,
			$router_ipv6: goto forward_to_router,
		}

		ip daddr vmap {
			$public_server_ipv4: goto forward_to_public_server,
			$server_ipv4: goto forward_to_server,
			$backbone_ipv4: goto forward_to_backbone,
			$ups_ipv4: goto forward_to_ups,
			$bmc_ipv4: goto forward_to_bmc,
			$pve_ipv4: goto forward_to_pve,
			$router_ipv4: goto forward_to_router,
		}

		goto forward_to_internet
	}

}