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-rw-r--r--data/templates/firewall/nftables.tmpl292
1 files changed, 292 insertions, 0 deletions
diff --git a/data/templates/firewall/nftables.tmpl b/data/templates/firewall/nftables.tmpl
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+++ b/data/templates/firewall/nftables.tmpl
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+#!/usr/sbin/nft -f
+
+{% if cleanup_commands is defined %}
+{% for command in cleanup_commands %}
+{{ command }}
+{% endfor %}
+{% endif %}
+
+{% if group is defined %}
+{% if group.address_group is defined %}
+{% for group_name, group_conf in group.address_group.items() %}
+define A_{{ group_name }} = {
+ {{ group_conf.address | join(",") }}
+}
+{% endfor %}
+{% endif %}
+{% if group.ipv6_address_group is defined %}
+{% for group_name, group_conf in group.ipv6_address_group.items() %}
+define A6_{{ group_name }} = {
+ {{ group_conf.address | join(",") }}
+}
+{% endfor %}
+{% endif %}
+{% if group.network_group is defined %}
+{% for group_name, group_conf in group.network_group.items() %}
+define N_{{ group_name }} = {
+ {{ group_conf.network | join(",") }}
+}
+{% endfor %}
+{% endif %}
+{% if group.ipv6_network_group is defined %}
+{% for group_name, group_conf in group.ipv6_network_group.items() %}
+define N6_{{ group_name }} = {
+ {{ group_conf.network | join(",") }}
+}
+{% endfor %}
+{% endif %}
+{% if group.port_group is defined %}
+{% for group_name, group_conf in group.port_group.items() %}
+define P_{{ group_name }} = {
+ {{ group_conf.port | join(",") }}
+}
+{% endfor %}
+{% endif %}
+{% endif %}
+
+table ip filter {
+{% if first_install is defined %}
+ chain VYOS_FW_IN {
+ type filter hook forward priority 0; policy accept;
+ }
+ chain VYOS_FW_OUT {
+ type filter hook forward priority 1; policy accept;
+ jump VYOS_POST_FW
+ }
+ chain VYOS_FW_LOCAL {
+ type filter hook input priority 0; policy accept;
+ jump VYOS_POST_FW
+ }
+ chain VYOS_FW_OUTPUT {
+ type filter hook output priority 0; policy accept;
+ jump VYOS_POST_FW
+ }
+ chain VYOS_POST_FW {
+ return
+ }
+ chain VYOS_FRAG_MARK {
+ type filter hook prerouting priority -450; policy accept;
+ ip frag-off & 0x3fff != 0 meta mark set 0xffff1 return
+ }
+{% endif %}
+{% if name is defined %}
+{% for name_text, conf in name.items() %}
+{% set default_log = 'log' if 'enable_default_log' in conf else '' %}
+ chain {{ name_text }} {
+{% if conf.rule is defined %}
+{% for rule_id, rule_conf in conf.rule.items() if rule_conf.disable is not defined %}
+ {{ rule_conf | nft_rule(name_text, rule_id) }}
+{% endfor %}
+{% endif %}
+{% if conf.default_action is defined %}
+ counter {{ default_log }} {{ conf.default_action | nft_action }} comment "{{ name_text }} default-action {{ conf.default_action }}"
+{% else %}
+ return
+{% endif %}
+ }
+{% endfor %}
+{% endif %}
+{% if state_policy is defined %}
+ chain VYOS_STATE_POLICY {
+{% if state_policy.established is defined %}
+ {{ state_policy.established | nft_state_policy('established') }}
+{% endif %}
+{% if state_policy.invalid is defined %}
+ {{ state_policy.invalid | nft_state_policy('invalid') }}
+{% endif %}
+{% if state_policy.related is defined %}
+ {{ state_policy.related | nft_state_policy('related') }}
+{% endif %}
+ return
+ }
+{% endif %}
+}
+
+table ip6 filter {
+{% if first_install is defined %}
+ chain VYOS_FW6_IN {
+ type filter hook forward priority 0; policy accept;
+ }
+ chain VYOS_FW6_OUT {
+ type filter hook forward priority 1; policy accept;
+ jump VYOS_POST_FW6
+ }
+ chain VYOS_FW6_LOCAL {
+ type filter hook input priority 0; policy accept;
+ jump VYOS_POST_FW6
+ }
+ chain VYOS_FW6_OUTPUT {
+ type filter hook output priority 0; policy accept;
+ jump VYOS_POST_FW6
+ }
+ chain VYOS_POST_FW6 {
+ return
+ }
+ chain VYOS_FRAG6_MARK {
+ type filter hook prerouting priority -450; policy accept;
+ exthdr frag exists meta mark set 0xffff1 return
+ }
+{% endif %}
+{% if ipv6_name is defined %}
+{% for name_text, conf in ipv6_name.items() %}
+{% set default_log = 'log' if 'enable_default_log' in conf else '' %}
+ chain {{ name_text }} {
+{% if conf.rule is defined %}
+{% for rule_id, rule_conf in conf.rule.items() if rule_conf.disable is not defined %}
+ {{ rule_conf | nft_rule(name_text, rule_id, 'ip6') }}
+{% endfor %}
+{% endif %}
+{% if conf.default_action is defined %}
+ counter {{ default_log }} {{ conf.default_action | nft_action }} comment "{{ name_text }} default-action {{ conf.default_action }}"
+{% else %}
+ return
+{% endif %}
+ }
+{% endfor %}
+{% endif %}
+{% if state_policy is defined %}
+ chain VYOS_STATE_POLICY6 {
+{% if state_policy.established is defined %}
+ {{ state_policy.established | nft_state_policy('established') }}
+{% endif %}
+{% if state_policy.invalid is defined %}
+ {{ state_policy.invalid | nft_state_policy('invalid') }}
+{% endif %}
+{% if state_policy.related is defined %}
+ {{ state_policy.related | nft_state_policy('related') }}
+{% endif %}
+ return
+ }
+{% endif %}
+}
+
+{% if first_install is defined %}
+table ip nat {
+ chain PREROUTING {
+ type nat hook prerouting priority -100; policy accept;
+ counter jump VYOS_PRE_DNAT_HOOK
+ }
+
+ chain POSTROUTING {
+ type nat hook postrouting priority 100; policy accept;
+ counter jump VYOS_PRE_SNAT_HOOK
+ }
+
+ chain VYOS_PRE_DNAT_HOOK {
+ return
+ }
+
+ chain VYOS_PRE_SNAT_HOOK {
+ return
+ }
+}
+
+table ip6 nat {
+ chain PREROUTING {
+ type nat hook prerouting priority -100; policy accept;
+ counter jump VYOS_DNPT_HOOK
+ }
+
+ chain POSTROUTING {
+ type nat hook postrouting priority 100; policy accept;
+ counter jump VYOS_SNPT_HOOK
+ }
+
+ chain VYOS_DNPT_HOOK {
+ return
+ }
+
+ chain VYOS_SNPT_HOOK {
+ return
+ }
+}
+
+table inet mangle {
+ chain FORWARD {
+ type filter hook forward priority -150; policy accept;
+ }
+}
+
+table raw {
+ chain VYOS_TCP_MSS {
+ type filter hook forward priority -300; policy accept;
+ }
+
+ chain PREROUTING {
+ type filter hook prerouting priority -200; policy accept;
+ counter jump VYOS_CT_IGNORE
+ counter jump VYOS_CT_TIMEOUT
+ counter jump VYOS_CT_PREROUTING_HOOK
+ notrack
+ }
+
+ chain OUTPUT {
+ type filter hook output priority -200; policy accept;
+ counter jump VYOS_CT_IGNORE
+ counter jump VYOS_CT_TIMEOUT
+ counter jump VYOS_CT_OUTPUT_HOOK
+ notrack
+ }
+
+ ct helper rpc_tcp {
+ type "rpc" protocol tcp;
+ }
+
+ ct helper rpc_udp {
+ type "rpc" protocol udp;
+ }
+
+ ct helper tns_tcp {
+ type "tns" protocol tcp;
+ }
+
+ chain VYOS_CT_HELPER {
+ ct helper set "rpc_tcp" tcp dport {111} return
+ ct helper set "rpc_udp" udp dport {111} return
+ ct helper set "tns_tcp" tcp dport {1521,1525,1536} return
+ return
+ }
+
+ chain VYOS_CT_IGNORE {
+ return
+ }
+
+ chain VYOS_CT_TIMEOUT {
+ return
+ }
+
+ chain VYOS_CT_PREROUTING_HOOK {
+ return
+ }
+
+ chain VYOS_CT_OUTPUT_HOOK {
+ return
+ }
+}
+
+table ip6 raw {
+ chain VYOS_TCP_MSS {
+ type filter hook forward priority -300; policy accept;
+ }
+
+ chain PREROUTING {
+ type filter hook prerouting priority -300; policy accept;
+ counter jump VYOS_CT_PREROUTING_HOOK
+ notrack
+ }
+
+ chain OUTPUT {
+ type filter hook output priority -300; policy accept;
+ counter jump VYOS_CT_OUTPUT_HOOK
+ notrack
+ }
+
+ chain VYOS_CT_PREROUTING_HOOK {
+ return
+ }
+
+ chain VYOS_CT_OUTPUT_HOOK {
+ return
+ }
+}
+{% endif %}