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authorChristian Poessinger <christian@poessinger.com>2022-09-14 07:55:54 +0200
committerGitHub <noreply@github.com>2022-09-14 07:55:54 +0200
commite5c9f290b70c700fbec5acdb3a90bf0c67edd091 (patch)
tree531a8c025b5115b443e780c659a1e4973659a4ec /src/conf_mode
parent24fc5a832dbdc3cb592674afd89bc72a22496713 (diff)
parent30945f39d6d1f0fdba34ce1c2d887a1a6823ecbe (diff)
downloadvyos-1x-e5c9f290b70c700fbec5acdb3a90bf0c67edd091.tar.gz
vyos-1x-e5c9f290b70c700fbec5acdb3a90bf0c67edd091.zip
Merge pull request #1534 from sarthurdev/firewall_interfaces
firewall: zone-policy: T2199: T4605: Refactor firewall, migrate zone-policy
Diffstat (limited to 'src/conf_mode')
-rwxr-xr-xsrc/conf_mode/firewall-interface.py186
-rwxr-xr-xsrc/conf_mode/firewall.py268
-rwxr-xr-xsrc/conf_mode/protocols_nhrp.py8
-rwxr-xr-xsrc/conf_mode/service_monitoring_telegraf.py2
-rwxr-xr-xsrc/conf_mode/zone_policy.py213
5 files changed, 90 insertions, 587 deletions
diff --git a/src/conf_mode/firewall-interface.py b/src/conf_mode/firewall-interface.py
deleted file mode 100755
index ab1c69259..000000000
--- a/src/conf_mode/firewall-interface.py
+++ /dev/null
@@ -1,186 +0,0 @@
-#!/usr/bin/env python3
-#
-# Copyright (C) 2021 VyOS maintainers and contributors
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 or later as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-import os
-import re
-
-from sys import argv
-from sys import exit
-
-from vyos.config import Config
-from vyos.configdict import leaf_node_changed
-from vyos.ifconfig import Section
-from vyos.template import render
-from vyos.util import cmd
-from vyos.util import dict_search_args
-from vyos.util import run
-from vyos import ConfigError
-from vyos import airbag
-airbag.enable()
-
-NAME_PREFIX = 'NAME_'
-NAME6_PREFIX = 'NAME6_'
-
-NFT_CHAINS = {
- 'in': 'VYOS_FW_FORWARD',
- 'out': 'VYOS_FW_FORWARD',
- 'local': 'VYOS_FW_LOCAL'
-}
-NFT6_CHAINS = {
- 'in': 'VYOS_FW6_FORWARD',
- 'out': 'VYOS_FW6_FORWARD',
- 'local': 'VYOS_FW6_LOCAL'
-}
-
-def get_config(config=None):
- if config:
- conf = config
- else:
- conf = Config()
-
- ifname = argv[1]
- ifpath = Section.get_config_path(ifname)
- if_firewall_path = f'interfaces {ifpath} firewall'
-
- if_firewall = conf.get_config_dict(if_firewall_path, key_mangling=('-', '_'), get_first_key=True,
- no_tag_node_value_mangle=True)
-
- if_firewall['ifname'] = ifname
- if_firewall['firewall'] = conf.get_config_dict(['firewall'], key_mangling=('-', '_'), get_first_key=True,
- no_tag_node_value_mangle=True)
-
- return if_firewall
-
-def verify_chain(table, chain):
- # Verify firewall applied
- code = run(f'nft list chain {table} {chain}')
- return code == 0
-
-def verify(if_firewall):
- # bail out early - looks like removal from running config
- if not if_firewall:
- return None
-
- for direction in ['in', 'out', 'local']:
- if direction in if_firewall:
- if 'name' in if_firewall[direction]:
- name = if_firewall[direction]['name']
-
- if 'name' not in if_firewall['firewall']:
- raise ConfigError('Firewall name not configured')
-
- if name not in if_firewall['firewall']['name']:
- raise ConfigError(f'Invalid firewall name "{name}"')
-
- if not verify_chain('ip filter', f'{NAME_PREFIX}{name}'):
- raise ConfigError('Firewall did not apply')
-
- if 'ipv6_name' in if_firewall[direction]:
- name = if_firewall[direction]['ipv6_name']
-
- if 'ipv6_name' not in if_firewall['firewall']:
- raise ConfigError('Firewall ipv6-name not configured')
-
- if name not in if_firewall['firewall']['ipv6_name']:
- raise ConfigError(f'Invalid firewall ipv6-name "{name}"')
-
- if not verify_chain('ip6 filter', f'{NAME6_PREFIX}{name}'):
- raise ConfigError('Firewall did not apply')
-
- return None
-
-def generate(if_firewall):
- return 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'{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
- retval = True
- continue
-
- handle_search = re.search('handle (\d+)', line)
- if handle_search:
- run(f'nft delete rule {table} {chain} handle {handle_search[1]}')
- 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:
- handle_search = re.search('handle (\d+)', line)
- if handle_search:
- return handle_search[1]
- return None
-
-def apply(if_firewall):
- ifname = if_firewall['ifname']
-
- for direction in ['in', 'out', 'local']:
- chain = NFT_CHAINS[direction]
- ipv6_chain = NFT6_CHAINS[direction]
- if_prefix = 'i' if direction in ['in', 'local'] else 'o'
-
- name = dict_search_args(if_firewall, direction, 'name')
- if name:
- rule_exists = cleanup_rule('ip filter', chain, if_prefix, ifname, f'{NAME_PREFIX}{name}')
-
- if not rule_exists:
- rule_action = 'insert'
- rule_prefix = ''
-
- handle = state_policy_handle('ip filter', chain)
- if handle:
- rule_action = 'add'
- rule_prefix = f'position {handle}'
-
- run(f'nft {rule_action} rule ip filter {chain} {rule_prefix} {if_prefix}ifname {ifname} counter jump {NAME_PREFIX}{name}')
- else:
- 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, if_prefix, ifname, f'{NAME6_PREFIX}{ipv6_name}')
-
- if not rule_exists:
- rule_action = 'insert'
- rule_prefix = ''
-
- handle = state_policy_handle('ip6 filter', ipv6_chain)
- if handle:
- rule_action = 'add'
- rule_prefix = f'position {handle}'
-
- run(f'nft {rule_action} rule ip6 filter {ipv6_chain} {rule_prefix} {if_prefix}ifname {ifname} counter jump {NAME6_PREFIX}{ipv6_name}')
- else:
- cleanup_rule('ip6 filter', ipv6_chain, if_prefix, ifname)
-
- return None
-
-if __name__ == '__main__':
- try:
- c = get_config()
- verify(c)
- generate(c)
- apply(c)
- except ConfigError as e:
- print(e)
- exit(1)
diff --git a/src/conf_mode/firewall.py b/src/conf_mode/firewall.py
index f0ea1a1e5..eeb57bd30 100755
--- a/src/conf_mode/firewall.py
+++ b/src/conf_mode/firewall.py
@@ -26,6 +26,7 @@ from vyos.config import Config
from vyos.configdict import dict_merge
from vyos.configdict import node_changed
from vyos.configdiff import get_config_diff, Diff
+# from vyos.configverify import verify_interface_exists
from vyos.firewall import geoip_update
from vyos.firewall import get_ips_domains_dict
from vyos.firewall import nft_add_set_elements
@@ -38,7 +39,7 @@ from vyos.util import cmd
from vyos.util import dict_search_args
from vyos.util import dict_search_recursive
from vyos.util import process_named_running
-from vyos.util import run
+from vyos.util import rc_cmd
from vyos.xml import defaults
from vyos import ConfigError
from vyos import airbag
@@ -47,7 +48,6 @@ airbag.enable()
policy_route_conf_script = '/usr/libexec/vyos/conf_mode/policy-route.py'
nftables_conf = '/run/nftables.conf'
-nftables_defines_conf = '/run/nftables_defines.conf'
sysfs_config = {
'all_ping': {'sysfs': '/proc/sys/net/ipv4/icmp_echo_ignore_all', 'enable': '0', 'disable': '1'},
@@ -63,28 +63,6 @@ sysfs_config = {
'twa_hazards_protection': {'sysfs': '/proc/sys/net/ipv4/tcp_rfc1337'}
}
-NAME_PREFIX = 'NAME_'
-NAME6_PREFIX = 'NAME6_'
-
-preserve_chains = [
- 'INPUT',
- 'FORWARD',
- 'OUTPUT',
- 'VYOS_FW_FORWARD',
- 'VYOS_FW_LOCAL',
- 'VYOS_FW_OUTPUT',
- 'VYOS_POST_FW',
- 'VYOS_FRAG_MARK',
- 'VYOS_FW6_FORWARD',
- 'VYOS_FW6_LOCAL',
- 'VYOS_FW6_OUTPUT',
- 'VYOS_POST_FW6',
- 'VYOS_FRAG6_MARK'
-]
-
-nft_iface_chains = ['VYOS_FW_FORWARD', 'VYOS_FW_OUTPUT', 'VYOS_FW_LOCAL']
-nft6_iface_chains = ['VYOS_FW6_FORWARD', 'VYOS_FW6_OUTPUT', 'VYOS_FW6_LOCAL']
-
valid_groups = [
'address_group',
'domain_group',
@@ -97,16 +75,6 @@ nested_group_types = [
'port_group', 'ipv6_address_group', 'ipv6_network_group'
]
-group_set_prefix = {
- 'A_': 'address_group',
- 'A6_': 'ipv6_address_group',
- 'D_': 'domain_group',
- 'M_': 'mac_group',
- 'N_': 'network_group',
- 'N6_': 'ipv6_network_group',
- 'P_': 'port_group'
-}
-
snmp_change_type = {
'unknown': 0,
'add': 1,
@@ -117,51 +85,6 @@ snmp_event_source = 1
snmp_trap_mib = 'VYATTA-TRAP-MIB'
snmp_trap_name = 'mgmtEventTrap'
-def get_firewall_interfaces(conf):
- out = {}
- interfaces = conf.get_config_dict(['interfaces'], key_mangling=('-', '_'), get_first_key=True,
- no_tag_node_value_mangle=True)
- def find_interfaces(iftype_conf, output={}, prefix=''):
- for ifname, if_conf in iftype_conf.items():
- if 'firewall' in if_conf:
- output[prefix + ifname] = if_conf['firewall']
- for vif in ['vif', 'vif_s', 'vif_c']:
- if vif in if_conf:
- output.update(find_interfaces(if_conf[vif], output, f'{prefix}{ifname}.'))
- return output
- for iftype, iftype_conf in interfaces.items():
- out.update(find_interfaces(iftype_conf))
- return out
-
-def get_firewall_zones(conf):
- used_v4 = []
- used_v6 = []
- zone_policy = conf.get_config_dict(['zone-policy'], key_mangling=('-', '_'), get_first_key=True,
- no_tag_node_value_mangle=True)
-
- if 'zone' in zone_policy:
- for zone, zone_conf in zone_policy['zone'].items():
- if 'from' in zone_conf:
- for from_zone, from_conf in zone_conf['from'].items():
- name = dict_search_args(from_conf, 'firewall', 'name')
- if name:
- used_v4.append(name)
-
- ipv6_name = dict_search_args(from_conf, 'firewall', 'ipv6_name')
- if ipv6_name:
- used_v6.append(ipv6_name)
-
- if 'intra_zone_filtering' in zone_conf:
- name = dict_search_args(zone_conf, 'intra_zone_filtering', 'firewall', 'name')
- if name:
- used_v4.append(name)
-
- ipv6_name = dict_search_args(zone_conf, 'intra_zone_filtering', 'firewall', 'ipv6_name')
- if ipv6_name:
- used_v6.append(ipv6_name)
-
- return {'name': used_v4, 'ipv6_name': used_v6}
-
def geoip_updated(conf, firewall):
diff = get_config_diff(conf)
node_diff = diff.get_child_nodes_diff(['firewall'], expand_nodes=Diff.DELETE, recursive=True)
@@ -215,6 +138,9 @@ def get_config(config=None):
if tmp in default_values:
del default_values[tmp]
+ if 'zone' in default_values:
+ del default_values['zone']
+
firewall = dict_merge(default_values, firewall)
# Merge in defaults for IPv4 ruleset
@@ -231,9 +157,12 @@ def get_config(config=None):
firewall['ipv6_name'][ipv6_name] = dict_merge(default_values,
firewall['ipv6_name'][ipv6_name])
+ if 'zone' in firewall:
+ default_values = defaults(base + ['zone'])
+ for zone in firewall['zone']:
+ firewall['zone'][zone] = dict_merge(default_values, firewall['zone'][zone])
+
firewall['policy_resync'] = bool('group' in firewall or node_changed(conf, base + ['group']))
- firewall['interfaces'] = get_firewall_interfaces(conf)
- firewall['zone_policy'] = get_firewall_zones(conf)
if 'config_trap' in firewall and firewall['config_trap'] == 'enable':
diff = get_config_diff(conf)
@@ -358,109 +287,99 @@ def verify(firewall):
for name in ['name', 'ipv6_name']:
if name in firewall:
for name_id, name_conf in firewall[name].items():
- if name_id in preserve_chains:
- raise ConfigError(f'Firewall name "{name_id}" is reserved for VyOS')
-
- if name_id.startswith("VZONE"):
- raise ConfigError(f'Firewall name "{name_id}" uses reserved prefix')
-
if 'rule' in name_conf:
for rule_id, rule_conf in name_conf['rule'].items():
verify_rule(firewall, rule_conf, name == 'ipv6_name')
- for ifname, if_firewall in firewall['interfaces'].items():
- for direction in ['in', 'out', 'local']:
- name = dict_search_args(if_firewall, direction, 'name')
- ipv6_name = dict_search_args(if_firewall, direction, 'ipv6_name')
+ if 'interface' in firewall:
+ for ifname, if_firewall in firewall['interface'].items():
+ # verify ifname needs to be disabled, dynamic devices come up later
+ # verify_interface_exists(ifname)
- if name and dict_search_args(firewall, 'name', name) == None:
- raise ConfigError(f'Firewall name "{name}" is still referenced on interface {ifname}')
+ for direction in ['in', 'out', 'local']:
+ name = dict_search_args(if_firewall, direction, 'name')
+ ipv6_name = dict_search_args(if_firewall, direction, 'ipv6_name')
- if ipv6_name and dict_search_args(firewall, 'ipv6_name', ipv6_name) == None:
- raise ConfigError(f'Firewall ipv6-name "{ipv6_name}" is still referenced on interface {ifname}')
+ if name and dict_search_args(firewall, 'name', name) == None:
+ raise ConfigError(f'Invalid firewall name "{name}" referenced on interface {ifname}')
- for fw_name, used_names in firewall['zone_policy'].items():
- for name in used_names:
- if dict_search_args(firewall, fw_name, name) == None:
- raise ConfigError(f'Firewall {fw_name.replace("_", "-")} "{name}" is still referenced in zone-policy')
+ if ipv6_name and dict_search_args(firewall, 'ipv6_name', ipv6_name) == None:
+ raise ConfigError(f'Invalid firewall ipv6-name "{ipv6_name}" referenced on interface {ifname}')
- return None
+ local_zone = False
+ zone_interfaces = []
-def cleanup_commands(firewall):
- commands = []
- commands_chains = []
- commands_sets = []
- for table in ['ip filter', 'ip6 filter']:
- name_node = 'name' if table == 'ip filter' else 'ipv6_name'
- chain_prefix = NAME_PREFIX if table == 'ip filter' else NAME6_PREFIX
- state_chain = 'VYOS_STATE_POLICY' if table == 'ip filter' else 'VYOS_STATE_POLICY6'
- iface_chains = nft_iface_chains if table == 'ip filter' else nft6_iface_chains
-
- geoip_list = []
- if firewall['geoip_updated']:
- geoip_key = 'deleted_ipv6_name' if table == 'ip6 filter' else 'deleted_name'
- geoip_list = dict_search_args(firewall, 'geoip_updated', geoip_key) or []
-
- json_str = cmd(f'nft -t -j list table {table}')
- obj = loads(json_str)
-
- if 'nftables' not in obj:
- continue
-
- for item in obj['nftables']:
- if 'chain' in item:
- chain = item['chain']['name']
- if chain in preserve_chains or chain.startswith("VZONE"):
- continue
+ if 'zone' in firewall:
+ for zone, zone_conf in firewall['zone'].items():
+ if 'local_zone' not in zone_conf and 'interface' not in zone_conf:
+ raise ConfigError(f'Zone "{zone}" has no interfaces and is not the local zone')
- if chain == state_chain:
- command = 'delete' if 'state_policy' not in firewall else 'flush'
- commands_chains.append(f'{command} chain {table} {chain}')
- elif dict_search_args(firewall, name_node, chain.replace(chain_prefix, "", 1)) != None:
- commands.append(f'flush chain {table} {chain}')
- else:
- commands_chains.append(f'delete chain {table} {chain}')
+ if 'local_zone' in zone_conf:
+ if local_zone:
+ raise ConfigError('There cannot be multiple local zones')
+ if 'interface' in zone_conf:
+ raise ConfigError('Local zone cannot have interfaces assigned')
+ if 'intra_zone_filtering' in zone_conf:
+ raise ConfigError('Local zone cannot use intra-zone-filtering')
+ local_zone = True
- if 'rule' in item:
- rule = item['rule']
- chain = rule['chain']
- handle = rule['handle']
+ if 'interface' in zone_conf:
+ found_duplicates = [intf for intf in zone_conf['interface'] if intf in zone_interfaces]
- if chain in iface_chains:
- target, _ = next(dict_search_recursive(rule['expr'], 'target'))
+ if found_duplicates:
+ raise ConfigError(f'Interfaces cannot be assigned to multiple zones')
- if target == state_chain and 'state_policy' not in firewall:
- commands.append(f'delete rule {table} {chain} handle {handle}')
+ zone_interfaces += zone_conf['interface']
- if target.startswith(chain_prefix):
- if dict_search_args(firewall, name_node, target.replace(chain_prefix, "", 1)) == None:
- commands.append(f'delete rule {table} {chain} handle {handle}')
+ if 'intra_zone_filtering' in zone_conf:
+ intra_zone = zone_conf['intra_zone_filtering']
- if 'set' in item:
- set_name = item['set']['name']
+ if len(intra_zone) > 1:
+ raise ConfigError('Only one intra-zone-filtering action must be specified')
- if set_name.startswith('GEOIP_CC_') and set_name in geoip_list:
- commands_sets.append(f'delete set {table} {set_name}')
- continue
+ if 'firewall' in intra_zone:
+ v4_name = dict_search_args(intra_zone, 'firewall', 'name')
+ if v4_name and not dict_search_args(firewall, 'name', v4_name):
+ raise ConfigError(f'Firewall name "{v4_name}" does not exist')
- if set_name.startswith("RECENT_"):
- commands_sets.append(f'delete set {table} {set_name}')
- continue
+ v6_name = dict_search_args(intra_zone, 'firewall', 'ipv6_name')
+ if v6_name and not dict_search_args(firewall, 'ipv6_name', v6_name):
+ raise ConfigError(f'Firewall ipv6-name "{v6_name}" does not exist')
+
+ if not v4_name and not v6_name:
+ raise ConfigError('No firewall names specified for intra-zone-filtering')
- for prefix, group_type in group_set_prefix.items():
- if set_name.startswith(prefix):
- group_name = set_name.replace(prefix, "", 1)
- if dict_search_args(firewall, 'group', group_type, group_name) != None:
- commands_sets.append(f'flush set {table} {set_name}')
- else:
- commands_sets.append(f'delete set {table} {set_name}')
- return commands + commands_chains + commands_sets
+ if 'from' in zone_conf:
+ for from_zone, from_conf in zone_conf['from'].items():
+ if from_zone not in firewall['zone']:
+ raise ConfigError(f'Zone "{zone}" refers to a non-existent or deleted zone "{from_zone}"')
+
+ v4_name = dict_search_args(from_conf, 'firewall', 'name')
+ if v4_name and not dict_search_args(firewall, 'name', v4_name):
+ raise ConfigError(f'Firewall name "{v4_name}" does not exist')
+
+ v6_name = dict_search_args(from_conf, 'firewall', 'ipv6_name')
+ if v6_name and not dict_search_args(firewall, 'ipv6_name', v6_name):
+ raise ConfigError(f'Firewall ipv6-name "{v6_name}" does not exist')
+
+ return None
def generate(firewall):
if not os.path.exists(nftables_conf):
firewall['first_install'] = True
- else:
- firewall['cleanup_commands'] = cleanup_commands(firewall)
+
+ if 'zone' in firewall:
+ for local_zone, local_zone_conf in firewall['zone'].items():
+ if 'local_zone' not in local_zone_conf:
+ continue
+
+ local_zone_conf['from_local'] = {}
+
+ for zone, zone_conf in firewall['zone'].items():
+ if zone == local_zone or 'from' not in zone_conf:
+ continue
+ if local_zone in zone_conf['from']:
+ local_zone_conf['from_local'][zone] = zone_conf['from'][local_zone]
render(nftables_conf, 'firewall/nftables.j2', firewall)
return None
@@ -521,26 +440,16 @@ def post_apply_trap(firewall):
cmd(base_cmd + ' '.join(objects))
-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_FORWARD')
- return 'VYOS_STATE_POLICY' in search_str
-
def resync_policy_route():
# Update policy route as firewall groups were updated
- tmp = run(policy_route_conf_script)
+ tmp, out = rc_cmd(policy_route_conf_script)
if tmp > 0:
- Warning('Failed to re-apply policy route configuration!')
+ Warning(f'Failed to re-apply policy route configuration! {out}')
def apply(firewall):
- if 'first_install' in firewall:
- run('nfct helper add rpc inet tcp')
- run('nfct helper add rpc inet udp')
- run('nfct helper add tns inet tcp')
-
- install_result = run(f'nft -f {nftables_conf}')
+ install_result, output = rc_cmd(f'nft -f {nftables_conf}')
if install_result == 1:
- raise ConfigError('Failed to apply firewall')
+ raise ConfigError(f'Failed to apply firewall: {output}')
# set firewall group domain-group xxx
if 'group' in firewall:
@@ -563,13 +472,6 @@ def apply(firewall):
else:
call('systemctl stop vyos-domain-group-resolve.service')
- if 'state_policy' in firewall and not state_policy_rule_exists():
- 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_FORWARD', 'VYOS_FW6_OUTPUT', 'VYOS_FW6_LOCAL']:
- cmd(f'nft insert rule ip6 filter {chain} jump VYOS_STATE_POLICY6')
-
apply_sysfs(firewall)
if firewall['policy_resync']:
diff --git a/src/conf_mode/protocols_nhrp.py b/src/conf_mode/protocols_nhrp.py
index b247ce2ab..991fcc7eb 100755
--- a/src/conf_mode/protocols_nhrp.py
+++ b/src/conf_mode/protocols_nhrp.py
@@ -94,15 +94,15 @@ def apply(nhrp):
comment = f'VYOS_NHRP_{tunnel}'
source_address = nhrp['if_tunnel'][tunnel]['source_address']
- rule_handle = find_nftables_rule('ip filter', 'VYOS_FW_OUTPUT', ['ip protocol gre', f'ip saddr {source_address}', 'ip daddr 224.0.0.0/4'])
+ rule_handle = find_nftables_rule('ip vyos_filter', 'VYOS_FW_OUTPUT', ['ip protocol gre', f'ip saddr {source_address}', 'ip daddr 224.0.0.0/4'])
if not rule_handle:
- run(f'sudo nft insert rule ip filter VYOS_FW_OUTPUT ip protocol gre ip saddr {source_address} ip daddr 224.0.0.0/4 counter drop comment "{comment}"')
+ run(f'sudo nft insert rule ip vyos_filter VYOS_FW_OUTPUT ip protocol gre ip saddr {source_address} ip daddr 224.0.0.0/4 counter drop comment "{comment}"')
for tunnel in nhrp['del_tunnels']:
comment = f'VYOS_NHRP_{tunnel}'
- rule_handle = find_nftables_rule('ip filter', 'VYOS_FW_OUTPUT', [f'comment "{comment}"'])
+ rule_handle = find_nftables_rule('ip vyos_filter', 'VYOS_FW_OUTPUT', [f'comment "{comment}"'])
if rule_handle:
- remove_nftables_rule('ip filter', 'VYOS_FW_OUTPUT', rule_handle)
+ remove_nftables_rule('ip vyos_filter', 'VYOS_FW_OUTPUT', rule_handle)
action = 'restart' if nhrp and 'tunnel' in nhrp else 'stop'
run(f'systemctl {action} opennhrp.service')
diff --git a/src/conf_mode/service_monitoring_telegraf.py b/src/conf_mode/service_monitoring_telegraf.py
index 53df006a4..427cb6911 100755
--- a/src/conf_mode/service_monitoring_telegraf.py
+++ b/src/conf_mode/service_monitoring_telegraf.py
@@ -42,7 +42,7 @@ systemd_override = '/etc/systemd/system/telegraf.service.d/10-override.conf'
def get_nft_filter_chains():
""" Get nft chains for table filter """
- nft = cmd('nft --json list table ip filter')
+ nft = cmd('nft --json list table ip vyos_filter')
nft = json.loads(nft)
chain_list = []
diff --git a/src/conf_mode/zone_policy.py b/src/conf_mode/zone_policy.py
deleted file mode 100755
index a52c52706..000000000
--- a/src/conf_mode/zone_policy.py
+++ /dev/null
@@ -1,213 +0,0 @@
-#!/usr/bin/env python3
-#
-# Copyright (C) 2021-2022 VyOS maintainers and contributors
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 or later as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-import os
-
-from json import loads
-from sys import exit
-
-from vyos.config import Config
-from vyos.configdict import dict_merge
-from vyos.template import render
-from vyos.util import cmd
-from vyos.util import dict_search_args
-from vyos.util import run
-from vyos.xml import defaults
-from vyos import ConfigError
-from vyos import airbag
-airbag.enable()
-
-nftables_conf = '/run/nftables_zone.conf'
-
-def get_config(config=None):
- if config:
- conf = config
- else:
- conf = Config()
- base = ['zone-policy']
- zone_policy = conf.get_config_dict(base, key_mangling=('-', '_'),
- get_first_key=True,
- no_tag_node_value_mangle=True)
-
- zone_policy['firewall'] = conf.get_config_dict(['firewall'],
- key_mangling=('-', '_'),
- get_first_key=True,
- no_tag_node_value_mangle=True)
-
- if 'zone' in zone_policy:
- # We have gathered the dict representation of the CLI, but there are default
- # options which we need to update into the dictionary retrived.
- default_values = defaults(base + ['zone'])
- for zone in zone_policy['zone']:
- zone_policy['zone'][zone] = dict_merge(default_values,
- zone_policy['zone'][zone])
-
- return zone_policy
-
-def verify(zone_policy):
- # bail out early - looks like removal from running config
- if not zone_policy:
- return None
-
- local_zone = False
- interfaces = []
-
- if 'zone' in zone_policy:
- for zone, zone_conf in zone_policy['zone'].items():
- if 'local_zone' not in zone_conf and 'interface' not in zone_conf:
- raise ConfigError(f'Zone "{zone}" has no interfaces and is not the local zone')
-
- if 'local_zone' in zone_conf:
- if local_zone:
- raise ConfigError('There cannot be multiple local zones')
- if 'interface' in zone_conf:
- raise ConfigError('Local zone cannot have interfaces assigned')
- if 'intra_zone_filtering' in zone_conf:
- raise ConfigError('Local zone cannot use intra-zone-filtering')
- local_zone = True
-
- if 'interface' in zone_conf:
- found_duplicates = [intf for intf in zone_conf['interface'] if intf in interfaces]
-
- if found_duplicates:
- raise ConfigError(f'Interfaces cannot be assigned to multiple zones')
-
- interfaces += zone_conf['interface']
-
- if 'intra_zone_filtering' in zone_conf:
- intra_zone = zone_conf['intra_zone_filtering']
-
- if len(intra_zone) > 1:
- raise ConfigError('Only one intra-zone-filtering action must be specified')
-
- if 'firewall' in intra_zone:
- v4_name = dict_search_args(intra_zone, 'firewall', 'name')
- if v4_name and not dict_search_args(zone_policy, 'firewall', 'name', v4_name):
- raise ConfigError(f'Firewall name "{v4_name}" does not exist')
-
- v6_name = dict_search_args(intra_zone, 'firewall', 'ipv6-name')
- if v6_name and not dict_search_args(zone_policy, 'firewall', 'ipv6-name', v6_name):
- raise ConfigError(f'Firewall ipv6-name "{v6_name}" does not exist')
-
- if not v4_name and not v6_name:
- raise ConfigError('No firewall names specified for intra-zone-filtering')
-
- if 'from' in zone_conf:
- for from_zone, from_conf in zone_conf['from'].items():
- if from_zone not in zone_policy['zone']:
- raise ConfigError(f'Zone "{zone}" refers to a non-existent or deleted zone "{from_zone}"')
-
- v4_name = dict_search_args(from_conf, 'firewall', 'name')
- if v4_name:
- if 'name' not in zone_policy['firewall']:
- raise ConfigError(f'Firewall name "{v4_name}" does not exist')
-
- if not dict_search_args(zone_policy, 'firewall', 'name', v4_name):
- raise ConfigError(f'Firewall name "{v4_name}" does not exist')
-
- v6_name = dict_search_args(from_conf, 'firewall', 'v6_name')
- if v6_name:
- if 'ipv6_name' not in zone_policy['firewall']:
- raise ConfigError(f'Firewall ipv6-name "{v6_name}" does not exist')
-
- if not dict_search_args(zone_policy, 'firewall', 'ipv6_name', v6_name):
- raise ConfigError(f'Firewall ipv6-name "{v6_name}" does not exist')
-
- return None
-
-def has_ipv4_fw(zone_conf):
- if 'from' not in zone_conf:
- return False
- zone_from = zone_conf['from']
- return any([True for fz in zone_from if dict_search_args(zone_from, fz, 'firewall', 'name')])
-
-def has_ipv6_fw(zone_conf):
- if 'from' not in zone_conf:
- return False
- zone_from = zone_conf['from']
- return any([True for fz in zone_from if dict_search_args(zone_from, fz, 'firewall', 'ipv6_name')])
-
-def get_local_from(zone_policy, local_zone_name):
- # Get all zone firewall names from the local zone
- out = {}
- for zone, zone_conf in zone_policy['zone'].items():
- if zone == local_zone_name:
- continue
- if 'from' not in zone_conf:
- continue
- if local_zone_name in zone_conf['from']:
- out[zone] = zone_conf['from'][local_zone_name]
- return out
-
-def cleanup_commands():
- commands = []
- for table in ['ip filter', 'ip6 filter']:
- json_str = cmd(f'nft -t -j list table {table}')
- obj = loads(json_str)
- if 'nftables' not in obj:
- continue
- for item in obj['nftables']:
- if 'rule' in item:
- chain = item['rule']['chain']
- handle = item['rule']['handle']
- if 'expr' not in item['rule']:
- continue
- for expr in item['rule']['expr']:
- target = dict_search_args(expr, 'jump', 'target')
- 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:
- if item['chain']['name'].startswith("VZONE"):
- chain = item['chain']['name']
- commands.append(f'delete chain {table} {chain}')
- return commands
-
-def generate(zone_policy):
- data = zone_policy or {}
-
- if os.path.exists(nftables_conf): # Check to see if we've run before
- data['cleanup_commands'] = cleanup_commands()
-
- if 'zone' in data:
- for zone, zone_conf in data['zone'].items():
- zone_conf['ipv4'] = has_ipv4_fw(zone_conf)
- zone_conf['ipv6'] = has_ipv6_fw(zone_conf)
-
- if 'local_zone' in zone_conf:
- zone_conf['from_local'] = get_local_from(data, zone)
-
- render(nftables_conf, 'zone_policy/nftables.j2', data)
- return None
-
-def apply(zone_policy):
- install_result = run(f'nft -f {nftables_conf}')
- if install_result != 0:
- raise ConfigError('Failed to apply zone-policy')
-
- return None
-
-if __name__ == '__main__':
- try:
- c = get_config()
- verify(c)
- generate(c)
- apply(c)
- except ConfigError as e:
- print(e)
- exit(1)