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-rw-r--r--data/templates/firewall/nftables.tmpl252
1 files changed, 252 insertions, 0 deletions
diff --git a/data/templates/firewall/nftables.tmpl b/data/templates/firewall/nftables.tmpl
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index 000000000..33c821e84
--- /dev/null
+++ b/data/templates/firewall/nftables.tmpl
@@ -0,0 +1,252 @@
+#!/usr/sbin/nft -f
+
+{% if cleanup_commands is defined %}
+{% for command in cleanup_commands %}
+{{ command }}
+{% endfor %}
+{% endif %}
+
+include "/run/nftables_defines.conf"
+
+table ip filter {
+{% if first_install is defined %}
+ chain VYOS_FW_FORWARD {
+ type filter hook forward priority 0; 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() %}
+ 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 %}
+ {{ conf | nft_default_rule(name_text) }}
+ }
+{% 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_FORWARD {
+ type filter hook forward priority 0; 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() %}
+ 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 %}
+ {{ conf | nft_default_rule(name_text) }}
+ }
+{% endfor %}
+{% endif %}
+{% if state_policy is defined %}
+ chain VYOS_STATE_POLICY6 {
+{% if state_policy.established is defined %}
+ {{ state_policy.established | nft_state_policy('established', ipv6=True) }}
+{% endif %}
+{% if state_policy.invalid is defined %}
+ {{ state_policy.invalid | nft_state_policy('invalid', ipv6=True) }}
+{% endif %}
+{% if state_policy.related is defined %}
+ {{ state_policy.related | nft_state_policy('related', ipv6=True) }}
+{% 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
+ counter jump FW_CONNTRACK
+ 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
+ counter jump FW_CONNTRACK
+ 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
+ }
+
+ chain FW_CONNTRACK {
+ accept
+ }
+}
+
+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
+ counter jump FW_CONNTRACK
+ notrack
+ }
+
+ chain OUTPUT {
+ type filter hook output priority -300; policy accept;
+ counter jump VYOS_CT_OUTPUT_HOOK
+ counter jump FW_CONNTRACK
+ notrack
+ }
+
+ chain VYOS_CT_PREROUTING_HOOK {
+ return
+ }
+
+ chain VYOS_CT_OUTPUT_HOOK {
+ return
+ }
+
+ chain FW_CONNTRACK {
+ accept
+ }
+}
+{% endif %}