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-rw-r--r--data/templates/firewall/nftables.tmpl10
-rw-r--r--data/templates/zone_policy/nftables.tmpl14
-rw-r--r--python/vyos/template.py6
-rwxr-xr-xsmoketest/scripts/cli/test_firewall.py4
-rwxr-xr-xsrc/conf_mode/firewall-interface.py31
-rwxr-xr-xsrc/conf_mode/firewall.py14
-rwxr-xr-xsrc/conf_mode/zone_policy.py6
7 files changed, 44 insertions, 41 deletions
diff --git a/data/templates/firewall/nftables.tmpl b/data/templates/firewall/nftables.tmpl
index bbb111b1f..68e83de64 100644
--- a/data/templates/firewall/nftables.tmpl
+++ b/data/templates/firewall/nftables.tmpl
@@ -46,11 +46,8 @@ define P_{{ group_name }} = {
table ip filter {
{% if first_install is defined %}
- chain VYOS_FW_IN {
+ chain VYOS_FW_FORWARD {
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 {
@@ -104,11 +101,8 @@ table ip filter {
table ip6 filter {
{% if first_install is defined %}
- chain VYOS_FW6_IN {
+ chain VYOS_FW6_FORWARD {
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 {
diff --git a/data/templates/zone_policy/nftables.tmpl b/data/templates/zone_policy/nftables.tmpl
index 21230c688..fae6e8c4f 100644
--- a/data/templates/zone_policy/nftables.tmpl
+++ b/data/templates/zone_policy/nftables.tmpl
@@ -81,7 +81,7 @@ table ip6 filter {
insert rule ip filter VYOS_FW_LOCAL counter jump VZONE_{{ zone_name }}_IN
insert rule ip filter VYOS_FW_OUTPUT counter jump VZONE_{{ zone_name }}_OUT
{% else %}
-insert rule ip filter VYOS_FW_OUT oifname { {{ zone_conf.interface | join(',') }} } counter jump VZONE_{{ zone_name }}
+insert rule ip filter VYOS_FW_FORWARD oifname { {{ zone_conf.interface | join(',') }} } counter jump VZONE_{{ zone_name }}
{% endif %}
{% endif %}
{% if zone_conf.ipv6 %}
@@ -89,9 +89,19 @@ insert rule ip filter VYOS_FW_OUT oifname { {{ zone_conf.interface | join(',') }
insert rule ip6 filter VYOS_FW6_LOCAL counter jump VZONE6_{{ zone_name }}_IN
insert rule ip6 filter VYOS_FW6_OUTPUT counter jump VZONE6_{{ zone_name }}_OUT
{% else %}
-insert rule ip6 filter VYOS_FW6_OUT oifname { {{ zone_conf.interface | join(',') }} } counter jump VZONE6_{{ zone_name }}
+insert rule ip6 filter VYOS_FW6_FORWARD oifname { {{ zone_conf.interface | join(',') }} } counter jump VZONE6_{{ zone_name }}
{% endif %}
{% endif %}
{% endfor %}
+{# Ensure that state-policy rule is first in the chain #}
+{% if firewall.state_policy is defined %}
+{% for chain in ['VYOS_FW_FORWARD', 'VYOS_FW_OUTPUT', 'VYOS_FW_LOCAL'] %}
+insert rule ip filter {{ chain }} jump VYOS_STATE_POLICY
+{% endfor %}
+{% for chain in ['VYOS_FW6_FORWARD', 'VYOS_FW6_OUTPUT', 'VYOS_FW6_LOCAL'] %}
+insert rule ip6 filter {{ chain }} jump VYOS_STATE_POLICY6
+{% endfor %}
+{% endif %}
+
{% endif %}
diff --git a/python/vyos/template.py b/python/vyos/template.py
index 7671bf377..6f65c6c98 100644
--- a/python/vyos/template.py
+++ b/python/vyos/template.py
@@ -526,11 +526,7 @@ def nft_state_policy(conf, state, ipv6=False):
out.append('counter')
if 'action' in conf:
- if conf['action'] == 'accept':
- jump_target = 'VYOS_POST_FW6' if ipv6 else 'VYOS_POST_FW'
- out.append(f'jump {jump_target}')
- else:
- out.append(conf['action'])
+ out.append(conf['action'])
return " ".join(out)
diff --git a/smoketest/scripts/cli/test_firewall.py b/smoketest/scripts/cli/test_firewall.py
index 5f728f0cd..2b3b354ba 100755
--- a/smoketest/scripts/cli/test_firewall.py
+++ b/smoketest/scripts/cli/test_firewall.py
@@ -142,8 +142,8 @@ class TestFirewall(VyOSUnitTestSHIM.TestCase):
self.cli_commit()
chains = {
- 'ip filter': ['VYOS_FW_IN', 'VYOS_FW_OUTPUT', 'VYOS_FW_LOCAL'],
- 'ip6 filter': ['VYOS_FW6_IN', 'VYOS_FW6_OUTPUT', 'VYOS_FW6_LOCAL']
+ 'ip filter': ['VYOS_FW_FORWARD', 'VYOS_FW_OUTPUT', 'VYOS_FW_LOCAL'],
+ 'ip6 filter': ['VYOS_FW6_FORWARD', 'VYOS_FW6_OUTPUT', 'VYOS_FW6_LOCAL']
}
for table in ['ip filter', 'ip6 filter']:
diff --git a/src/conf_mode/firewall-interface.py b/src/conf_mode/firewall-interface.py
index 516fa6c48..b0df9dff4 100755
--- a/src/conf_mode/firewall-interface.py
+++ b/src/conf_mode/firewall-interface.py
@@ -32,13 +32,13 @@ from vyos import airbag
airbag.enable()
NFT_CHAINS = {
- 'in': 'VYOS_FW_IN',
- 'out': 'VYOS_FW_OUT',
+ 'in': 'VYOS_FW_FORWARD',
+ 'out': 'VYOS_FW_FORWARD',
'local': 'VYOS_FW_LOCAL'
}
NFT6_CHAINS = {
- 'in': 'VYOS_FW6_IN',
- 'out': 'VYOS_FW6_OUT',
+ 'in': 'VYOS_FW6_FORWARD',
+ 'out': 'VYOS_FW6_FORWARD',
'local': 'VYOS_FW6_LOCAL'
}
@@ -91,11 +91,11 @@ def verify(if_firewall):
def generate(if_firewall):
return None
-def cleanup_rule(table, chain, ifname, new_name=None):
+def cleanup_rule(table, chain, prefix, ifname, new_name=None):
results = cmd(f'nft -a list chain {table} {chain}').split("\n")
retval = None
for line in results:
- if f'ifname "{ifname}"' in line:
+ if f'{prefix}ifname "{ifname}"' in line:
if new_name and f'jump {new_name}' in line:
# new_name is used to clear rules for any previously referenced chains
# returns true when rule exists and doesn't need to be created
@@ -108,6 +108,7 @@ def cleanup_rule(table, chain, ifname, new_name=None):
return retval
def state_policy_handle(table, chain):
+ # Find any state-policy rule to ensure interface rules are only inserted afterwards
results = cmd(f'nft -a list chain {table} {chain}').split("\n")
for line in results:
if 'jump VYOS_STATE_POLICY' in line:
@@ -126,11 +127,12 @@ def apply(if_firewall):
name = dict_search_args(if_firewall, direction, 'name')
if name:
- rule_exists = cleanup_rule('ip filter', chain, ifname, name)
- rule_action = 'insert'
- rule_prefix = ''
+ rule_exists = cleanup_rule('ip filter', chain, if_prefix, ifname, name)
if not rule_exists:
+ rule_action = 'insert'
+ rule_prefix = ''
+
handle = state_policy_handle('ip filter', chain)
if handle:
rule_action = 'add'
@@ -138,15 +140,16 @@ def apply(if_firewall):
run(f'nft {rule_action} rule ip filter {chain} {rule_prefix} {if_prefix}ifname {ifname} counter jump {name}')
else:
- cleanup_rule('ip filter', chain, ifname)
+ cleanup_rule('ip filter', chain, if_prefix, ifname)
ipv6_name = dict_search_args(if_firewall, direction, 'ipv6_name')
if ipv6_name:
- rule_exists = cleanup_rule('ip6 filter', ipv6_chain, ifname, ipv6_name)
- rule_action = 'insert'
- rule_prefix = ''
+ rule_exists = cleanup_rule('ip6 filter', ipv6_chain, if_prefix, ifname, ipv6_name)
if not rule_exists:
+ rule_action = 'insert'
+ rule_prefix = ''
+
handle = state_policy_handle('ip filter', chain)
if handle:
rule_action = 'add'
@@ -154,7 +157,7 @@ def apply(if_firewall):
run(f'nft {rule_action} rule ip6 filter {ipv6_chain} {rule_prefix} {if_prefix}ifname {ifname} counter jump {ipv6_name}')
else:
- cleanup_rule('ip6 filter', ipv6_chain, ifname)
+ cleanup_rule('ip6 filter', ipv6_chain, if_prefix, ifname)
return None
diff --git a/src/conf_mode/firewall.py b/src/conf_mode/firewall.py
index 8e037c679..6016d94fa 100755
--- a/src/conf_mode/firewall.py
+++ b/src/conf_mode/firewall.py
@@ -53,14 +53,12 @@ preserve_chains = [
'INPUT',
'FORWARD',
'OUTPUT',
- 'VYOS_FW_IN',
- 'VYOS_FW_OUT',
+ 'VYOS_FW_FORWARD',
'VYOS_FW_LOCAL',
'VYOS_FW_OUTPUT',
'VYOS_POST_FW',
'VYOS_FRAG_MARK',
- 'VYOS_FW6_IN',
- 'VYOS_FW6_OUT',
+ 'VYOS_FW6_FORWARD',
'VYOS_FW6_LOCAL',
'VYOS_FW6_OUTPUT',
'VYOS_POST_FW6',
@@ -228,7 +226,7 @@ def cleanup_commands(firewall):
commands.append(f'delete chain {table} {chain}')
elif 'rule' in item:
rule = item['rule']
- if rule['chain'] in ['VYOS_FW_IN', 'VYOS_FW_OUTPUT', 'VYOS_FW_LOCAL', 'VYOS_FW6_IN', 'VYOS_FW6_OUTPUT', 'VYOS_FW6_LOCAL']:
+ if rule['chain'] in ['VYOS_FW_FORWARD', 'VYOS_FW_OUTPUT', 'VYOS_FW_LOCAL', 'VYOS_FW6_FORWARD', 'VYOS_FW6_OUTPUT', 'VYOS_FW6_LOCAL']:
if 'expr' in rule and any([True for expr in rule['expr'] if dict_search_args(expr, 'jump', 'target') == state_chain]):
if 'state_policy' not in firewall:
chain = rule['chain']
@@ -303,7 +301,7 @@ def post_apply_trap(firewall):
def state_policy_rule_exists():
# Determine if state policy rules already exist in nft
- search_str = cmd(f'nft list chain ip filter VYOS_FW_IN')
+ search_str = cmd(f'nft list chain ip filter VYOS_FW_FORWARD')
return 'VYOS_STATE_POLICY' in search_str
def apply(firewall):
@@ -317,10 +315,10 @@ def apply(firewall):
raise ConfigError('Failed to apply firewall')
if 'state_policy' in firewall and not state_policy_rule_exists():
- for chain in ['VYOS_FW_IN', 'VYOS_FW_OUTPUT', 'VYOS_FW_LOCAL']:
+ for chain in ['VYOS_FW_FORWARD', 'VYOS_FW_OUTPUT', 'VYOS_FW_LOCAL']:
cmd(f'nft insert rule ip filter {chain} jump VYOS_STATE_POLICY')
- for chain in ['VYOS_FW6_IN', 'VYOS_FW6_OUTPUT', 'VYOS_FW6_LOCAL']:
+ for chain in ['VYOS_FW6_FORWARD', 'VYOS_FW6_OUTPUT', 'VYOS_FW6_LOCAL']:
cmd(f'nft insert rule ip6 filter {chain} jump VYOS_STATE_POLICY6')
apply_sysfs(firewall)
diff --git a/src/conf_mode/zone_policy.py b/src/conf_mode/zone_policy.py
index 2535ea33b..d605e9639 100755
--- a/src/conf_mode/zone_policy.py
+++ b/src/conf_mode/zone_policy.py
@@ -152,7 +152,9 @@ def cleanup_commands():
continue
for expr in item['rule']['expr']:
target = dict_search_args(expr, 'jump', 'target')
- if target and target.startswith("VZONE"):
+ if not target:
+ continue
+ if target.startswith("VZONE") or target.startswith("VYOS_STATE_POLICY"):
commands.append(f'delete rule {table} {chain} handle {handle}')
for item in obj['nftables']:
if 'chain' in item:
@@ -180,7 +182,7 @@ def generate(zone_policy):
def apply(zone_policy):
install_result = run(f'nft -f {nftables_conf}')
- if install_result == 1:
+ if install_result != 0:
raise ConfigError('Failed to apply zone-policy')
return None
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 03:11:21 +0000