From 64ee13cf9374d6e726570a8d0083c2e7a386a873 Mon Sep 17 00:00:00 2001 From: Nicolas Fort Date: Fri, 24 Nov 2023 10:24:48 +0000 Subject: T5775: firewall: re-add state-policy to firewall. These commands are now included in node. --- data/templates/firewall/nftables-zone.j2 | 11 ++++- data/templates/firewall/nftables.j2 | 50 +++++++++++++++++++++- interface-definitions/firewall.xml.in | 2 +- .../include/firewall/global-options.xml.i | 37 ++++++++++++++++ python/vyos/template.py | 2 +- smoketest/scripts/cli/test_firewall.py | 33 ++++++++++++-- 6 files changed, 127 insertions(+), 8 deletions(-) diff --git a/data/templates/firewall/nftables-zone.j2 b/data/templates/firewall/nftables-zone.j2 index beb14ff00..5e55099ca 100644 --- a/data/templates/firewall/nftables-zone.j2 +++ b/data/templates/firewall/nftables-zone.j2 @@ -1,5 +1,5 @@ -{% macro zone_chains(zone, family) %} +{% macro zone_chains(zone, family, state_policy=False) %} {% if family == 'ipv6' %} {% set fw_name = 'ipv6_name' %} {% set suffix = '6' %} @@ -10,6 +10,9 @@ chain VYOS_ZONE_FORWARD { type filter hook forward priority 1; policy accept; +{% if state_policy %} + jump VYOS_STATE_POLICY{{ suffix }} +{% endif %} {% for zone_name, zone_conf in zone.items() %} {% if 'local_zone' not in zone_conf %} oifname { {{ zone_conf.interface | join(',') }} } counter jump VZONE_{{ zone_name }} @@ -18,6 +21,9 @@ } chain VYOS_ZONE_LOCAL { type filter hook input priority 1; policy accept; +{% if state_policy %} + jump VYOS_STATE_POLICY{{ suffix }} +{% endif %} {% for zone_name, zone_conf in zone.items() %} {% if 'local_zone' in zone_conf %} counter jump VZONE_{{ zone_name }}_IN @@ -26,6 +32,9 @@ } chain VYOS_ZONE_OUTPUT { type filter hook output priority 1; policy accept; +{% if state_policy %} + jump VYOS_STATE_POLICY{{ suffix }} +{% endif %} {% for zone_name, zone_conf in zone.items() %} {% if 'local_zone' in zone_conf %} counter jump VZONE_{{ zone_name }}_OUT diff --git a/data/templates/firewall/nftables.j2 b/data/templates/firewall/nftables.j2 index 63195d25f..e0ad0e00a 100644 --- a/data/templates/firewall/nftables.j2 +++ b/data/templates/firewall/nftables.j2 @@ -46,6 +46,9 @@ table ip vyos_filter { {% for prior, conf in ipv4.forward.items() %} chain VYOS_FORWARD_{{ prior }} { type filter hook forward priority {{ prior }}; policy accept; +{% if global_options.state_policy is vyos_defined %} + jump VYOS_STATE_POLICY +{% endif %} {% if conf.rule is vyos_defined %} {% for rule_id, rule_conf in conf.rule.items() if rule_conf.disable is not vyos_defined %} {{ rule_conf | nft_rule('FWD', prior, rule_id) }} @@ -63,6 +66,9 @@ table ip vyos_filter { {% for prior, conf in ipv4.input.items() %} chain VYOS_INPUT_{{ prior }} { type filter hook input priority {{ prior }}; policy accept; +{% if global_options.state_policy is vyos_defined %} + jump VYOS_STATE_POLICY +{% endif %} {% if conf.rule is vyos_defined %} {% for rule_id, rule_conf in conf.rule.items() if rule_conf.disable is not vyos_defined %} {{ rule_conf | nft_rule('INP',prior, rule_id) }} @@ -80,6 +86,9 @@ table ip vyos_filter { {% for prior, conf in ipv4.output.items() %} chain VYOS_OUTPUT_{{ prior }} { type filter hook output priority {{ prior }}; policy accept; +{% if global_options.state_policy is vyos_defined %} + jump VYOS_STATE_POLICY +{% endif %} {% if conf.rule is vyos_defined %} {% for rule_id, rule_conf in conf.rule.items() if rule_conf.disable is not vyos_defined %} {{ rule_conf | nft_rule('OUT', prior, rule_id) }} @@ -154,7 +163,21 @@ table ip vyos_filter { {{ group_tmpl.groups(group, False, True) }} {% if zone is vyos_defined %} -{{ zone_tmpl.zone_chains(zone, 'ipv4') }} +{{ zone_tmpl.zone_chains(zone, 'ipv4', global_options.state_policy is vyos_defined) }} +{% endif %} +{% if global_options.state_policy is vyos_defined %} + chain VYOS_STATE_POLICY { +{% if global_options.state_policy.established is vyos_defined %} + {{ global_options.state_policy.established | nft_state_policy('established') }} +{% endif %} +{% if global_options.state_policy.invalid is vyos_defined %} + {{ global_options.state_policy.invalid | nft_state_policy('invalid') }} +{% endif %} +{% if global_options.state_policy.related is vyos_defined %} + {{ global_options.state_policy.related | nft_state_policy('related') }} +{% endif %} + return + } {% endif %} } @@ -174,6 +197,9 @@ table ip6 vyos_filter { {% for prior, conf in ipv6.forward.items() %} chain VYOS_IPV6_FORWARD_{{ prior }} { type filter hook forward priority {{ prior }}; policy accept; +{% if global_options.state_policy is vyos_defined %} + jump VYOS_STATE_POLICY6 +{% endif %} {% if conf.rule is vyos_defined %} {% for rule_id, rule_conf in conf.rule.items() if rule_conf.disable is not vyos_defined %} {{ rule_conf | nft_rule('FWD', prior, rule_id ,'ip6') }} @@ -191,6 +217,9 @@ table ip6 vyos_filter { {% for prior, conf in ipv6.input.items() %} chain VYOS_IPV6_INPUT_{{ prior }} { type filter hook input priority {{ prior }}; policy accept; +{% if global_options.state_policy is vyos_defined %} + jump VYOS_STATE_POLICY6 +{% endif %} {% if conf.rule is vyos_defined %} {% for rule_id, rule_conf in conf.rule.items() if rule_conf.disable is not vyos_defined %} {{ rule_conf | nft_rule('INP', prior, rule_id ,'ip6') }} @@ -208,6 +237,9 @@ table ip6 vyos_filter { {% for prior, conf in ipv6.output.items() %} chain VYOS_IPV6_OUTPUT_{{ prior }} { type filter hook output priority {{ prior }}; policy accept; +{% if global_options.state_policy is vyos_defined %} + jump VYOS_STATE_POLICY6 +{% endif %} {% if conf.rule is vyos_defined %} {% for rule_id, rule_conf in conf.rule.items() if rule_conf.disable is not vyos_defined %} {{ rule_conf | nft_rule('OUT', prior, rule_id ,'ip6') }} @@ -266,7 +298,21 @@ table ip6 vyos_filter { {% endif %} {{ group_tmpl.groups(group, True, True) }} {% if zone is vyos_defined %} -{{ zone_tmpl.zone_chains(zone, 'ipv6') }} +{{ zone_tmpl.zone_chains(zone, 'ipv6', global_options.state_policy is vyos_defined) }} +{% endif %} +{% if global_options.state_policy is vyos_defined %} + chain VYOS_STATE_POLICY6 { +{% if global_options.state_policy.established is vyos_defined %} + {{ global_options.state_policy.established | nft_state_policy('established') }} +{% endif %} +{% if global_options.state_policy.invalid is vyos_defined %} + {{ global_options.state_policy.invalid | nft_state_policy('invalid') }} +{% endif %} +{% if global_options.state_policy.related is vyos_defined %} + {{ global_options.state_policy.related | nft_state_policy('related') }} +{% endif %} + return + } {% endif %} } diff --git a/interface-definitions/firewall.xml.in b/interface-definitions/firewall.xml.in index 0bb14a1b3..70afdc995 100644 --- a/interface-definitions/firewall.xml.in +++ b/interface-definitions/firewall.xml.in @@ -393,7 +393,7 @@ Zone from which to filter traffic - zone-policy zone + firewall zone diff --git a/interface-definitions/include/firewall/global-options.xml.i b/interface-definitions/include/firewall/global-options.xml.i index e655cd6ac..415d85f05 100644 --- a/interface-definitions/include/firewall/global-options.xml.i +++ b/interface-definitions/include/firewall/global-options.xml.i @@ -167,6 +167,43 @@ disable + + + Global firewall state-policy + + + + + Global firewall policy for packets part of an established connection + + + #include + #include + #include + + + + + Global firewall policy for packets part of an invalid connection + + + #include + #include + #include + + + + + Global firewall policy for packets part of a related connection + + + #include + #include + #include + + + + Policy for using TCP SYN cookies with IPv4 diff --git a/python/vyos/template.py b/python/vyos/template.py index 1e683b605..f79c7545e 100644 --- a/python/vyos/template.py +++ b/python/vyos/template.py @@ -602,7 +602,7 @@ def nft_default_rule(fw_conf, fw_name, family): def nft_state_policy(conf, state): out = [f'ct state {state}'] - if 'log' in conf and 'enable' in conf['log']: + if 'log' in conf: log_state = state[:3].upper() log_action = (conf['action'] if 'action' in conf else 'accept')[:1].upper() out.append(f'log prefix "[STATE-POLICY-{log_state}-{log_action}]"') diff --git a/smoketest/scripts/cli/test_firewall.py b/smoketest/scripts/cli/test_firewall.py index cffa1c0be..066ed707b 100755 --- a/smoketest/scripts/cli/test_firewall.py +++ b/smoketest/scripts/cli/test_firewall.py @@ -408,6 +408,10 @@ class TestFirewall(VyOSUnitTestSHIM.TestCase): name = 'v6-smoketest' interface = 'eth0' + self.cli_set(['firewall', 'global-options', 'state-policy', 'established', 'action', 'accept']) + self.cli_set(['firewall', 'global-options', 'state-policy', 'related', 'action', 'accept']) + self.cli_set(['firewall', 'global-options', 'state-policy', 'invalid', 'action', 'drop']) + self.cli_set(['firewall', 'ipv6', 'name', name, 'default-action', 'drop']) self.cli_set(['firewall', 'ipv6', 'name', name, 'enable-default-log']) @@ -452,7 +456,12 @@ class TestFirewall(VyOSUnitTestSHIM.TestCase): ['log prefix "[ipv6-OUT-filter-default-D]"','OUT-filter default-action drop', 'drop'], [f'chain NAME6_{name}'], ['saddr 2002::1', 'daddr 2002::1:1', 'log prefix "[ipv6-NAM-v6-smoketest-1-A]" log level crit', 'accept'], - [f'"{name} default-action drop"', f'log prefix "[ipv6-{name}-default-D]"', 'drop'] + [f'"{name} default-action drop"', f'log prefix "[ipv6-{name}-default-D]"', 'drop'], + ['jump VYOS_STATE_POLICY6'], + ['chain VYOS_STATE_POLICY6'], + ['ct state established', 'accept'], + ['ct state invalid', 'drop'], + ['ct state related', 'accept'] ] self.verify_nftables(nftables_search, 'ip6 vyos_filter') @@ -535,6 +544,10 @@ class TestFirewall(VyOSUnitTestSHIM.TestCase): name = 'smoketest-state' interface = 'eth0' + self.cli_set(['firewall', 'global-options', 'state-policy', 'established', 'action', 'accept']) + self.cli_set(['firewall', 'global-options', 'state-policy', 'related', 'action', 'accept']) + self.cli_set(['firewall', 'global-options', 'state-policy', 'invalid', 'action', 'drop']) + self.cli_set(['firewall', 'ipv4', 'name', name, 'default-action', 'drop']) self.cli_set(['firewall', 'ipv4', 'name', name, 'rule', '1', 'action', 'accept']) self.cli_set(['firewall', 'ipv4', 'name', name, 'rule', '1', 'state', 'established']) @@ -561,7 +574,12 @@ class TestFirewall(VyOSUnitTestSHIM.TestCase): ['ct state new', 'ct status dnat', 'accept'], ['ct state { established, new }', 'ct status snat', 'accept'], ['ct state related', 'ct helper { "ftp", "pptp" }', 'accept'], - ['drop', f'comment "{name} default-action drop"'] + ['drop', f'comment "{name} default-action drop"'], + ['jump VYOS_STATE_POLICY'], + ['chain VYOS_STATE_POLICY'], + ['ct state established', 'accept'], + ['ct state invalid', 'drop'], + ['ct state related', 'accept'] ] self.verify_nftables(nftables_search, 'ip vyos_filter') @@ -657,6 +675,10 @@ class TestFirewall(VyOSUnitTestSHIM.TestCase): self.cli_set(['firewall', 'zone', 'smoketest-eth0', 'from', 'smoketest-local', 'firewall', 'name', 'smoketest']) self.cli_set(['firewall', 'zone', 'smoketest-local', 'local-zone']) self.cli_set(['firewall', 'zone', 'smoketest-local', 'from', 'smoketest-eth0', 'firewall', 'name', 'smoketest']) + self.cli_set(['firewall', 'global-options', 'state-policy', 'established', 'action', 'accept']) + self.cli_set(['firewall', 'global-options', 'state-policy', 'established', 'log']) + self.cli_set(['firewall', 'global-options', 'state-policy', 'related', 'action', 'accept']) + self.cli_set(['firewall', 'global-options', 'state-policy', 'invalid', 'action', 'drop']) self.cli_commit() @@ -674,7 +696,12 @@ class TestFirewall(VyOSUnitTestSHIM.TestCase): ['jump VZONE_smoketest-local_IN'], ['jump VZONE_smoketest-local_OUT'], ['iifname "eth0"', 'jump NAME_smoketest'], - ['oifname "eth0"', 'jump NAME_smoketest'] + ['oifname "eth0"', 'jump NAME_smoketest'], + ['jump VYOS_STATE_POLICY'], + ['chain VYOS_STATE_POLICY'], + ['ct state established', 'log prefix "[STATE-POLICY-EST-A]"', 'accept'], + ['ct state invalid', 'drop'], + ['ct state related', 'accept'] ] nftables_output = cmd('sudo nft list table ip vyos_filter') -- cgit v1.2.3 From 4ded8814f036b921a04a54850ca6717aafe91a52 Mon Sep 17 00:00:00 2001 From: Nicolas Fort Date: Tue, 28 Nov 2023 12:36:53 +0000 Subject: T5575: Update migration scripts for state policy parsing --- src/migration-scripts/firewall/10-to-11 | 18 +++++------------- src/migration-scripts/firewall/12-to-13 | 9 +++++++++ 2 files changed, 14 insertions(+), 13 deletions(-) diff --git a/src/migration-scripts/firewall/10-to-11 b/src/migration-scripts/firewall/10-to-11 index b739fb139..e14ea0e51 100755 --- a/src/migration-scripts/firewall/10-to-11 +++ b/src/migration-scripts/firewall/10-to-11 @@ -63,19 +63,11 @@ if not config.exists(base): ### Migration of state policies if config.exists(base + ['state-policy']): - for family in ['ipv4', 'ipv6']: - for hook in ['forward', 'input', 'output']: - for priority in ['filter']: - # Add default-action== accept for compatibility reasons: - config.set(base + [family, hook, priority, 'default-action'], value='accept') - position = 1 - for state in config.list_nodes(base + ['state-policy']): - action = config.return_value(base + ['state-policy', state, 'action']) - config.set(base + [family, hook, priority, 'rule']) - config.set_tag(base + [family, hook, priority, 'rule']) - config.set(base + [family, hook, priority, 'rule', position, 'state', state], value='enable') - config.set(base + [family, hook, priority, 'rule', position, 'action'], value=action) - position = position + 1 + for state in config.list_nodes(base + ['state-policy']): + action = config.return_value(base + ['state-policy', state, 'action']) + config.set(base + ['global-options', 'state-policy', state, 'action'], value=action) + if config.exists(base + ['state-policy', state, 'log']): + config.set(base + ['global-options', 'state-policy', state, 'log'], value='enable') config.delete(base + ['state-policy']) ## migration of global options: diff --git a/src/migration-scripts/firewall/12-to-13 b/src/migration-scripts/firewall/12-to-13 index 4eaae779b..8396dd9d1 100755 --- a/src/migration-scripts/firewall/12-to-13 +++ b/src/migration-scripts/firewall/12-to-13 @@ -49,6 +49,15 @@ if not config.exists(base): # Nothing to do exit(0) +# State Policy logs: +if config.exists(base + ['global-options', 'state-policy']): + for state in config.list_nodes(base + ['global-options', 'state-policy']): + if config.exists(base + ['global-options', 'state-policy', state, 'log']): + log_value = config.return_value(base + ['global-options', 'state-policy', state, 'log']) + config.delete(base + ['global-options', 'state-policy', state, 'log']) + if log_value == 'enable': + config.set(base + ['global-options', 'state-policy', state, 'log']) + for family in ['ipv4', 'ipv6', 'bridge']: if config.exists(base + [family]): for hook in ['forward', 'input', 'output', 'name']: -- cgit v1.2.3