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authorDaniil Baturin <daniil@vyos.io>2024-06-06 17:19:01 +0200
committerGitHub <noreply@github.com>2024-06-06 17:19:01 +0200
commit85da43aa26470e0657ba68437a297ed11045d132 (patch)
treee094a3c15cb0556bd8579745ae75fd093c1d7aa8 /src/conf_mode
parent1c57ed83b7838f4153f5b655c6a2b47bc12547ba (diff)
parent770edf016838523c248e3c8a36c5f327a0b98415 (diff)
downloadvyos-1x-85da43aa26470e0657ba68437a297ed11045d132.tar.gz
vyos-1x-85da43aa26470e0657ba68437a297ed11045d132.zip
Merge pull request #3578 from nicolas-fort/raw-hook
T3900: Add support for raw tables in firewall
Diffstat (limited to 'src/conf_mode')
-rwxr-xr-xsrc/conf_mode/firewall.py43
-rwxr-xr-xsrc/conf_mode/system_conntrack.py3
2 files changed, 10 insertions, 36 deletions
diff --git a/src/conf_mode/firewall.py b/src/conf_mode/firewall.py
index e96e57154..4c289b921 100755
--- a/src/conf_mode/firewall.py
+++ b/src/conf_mode/firewall.py
@@ -33,6 +33,7 @@ from vyos.template import render
from vyos.utils.dict import dict_search_args
from vyos.utils.dict import dict_search_recursive
from vyos.utils.process import call
+from vyos.utils.process import cmd
from vyos.utils.process import rc_cmd
from vyos import ConfigError
from vyos import airbag
@@ -40,20 +41,7 @@ from vyos import airbag
airbag.enable()
nftables_conf = '/run/nftables.conf'
-
-sysfs_config = {
- 'all_ping': {'sysfs': '/proc/sys/net/ipv4/icmp_echo_ignore_all', 'enable': '0', 'disable': '1'},
- 'broadcast_ping': {'sysfs': '/proc/sys/net/ipv4/icmp_echo_ignore_broadcasts', 'enable': '0', 'disable': '1'},
- 'directed_broadcast' : {'sysfs': '/proc/sys/net/ipv4/conf/all/bc_forwarding', 'enable': '1', 'disable': '0'},
- 'ip_src_route': {'sysfs': '/proc/sys/net/ipv4/conf/*/accept_source_route'},
- 'ipv6_receive_redirects': {'sysfs': '/proc/sys/net/ipv6/conf/*/accept_redirects'},
- 'ipv6_src_route': {'sysfs': '/proc/sys/net/ipv6/conf/*/accept_source_route', 'enable': '0', 'disable': '-1'},
- 'log_martians': {'sysfs': '/proc/sys/net/ipv4/conf/all/log_martians'},
- 'receive_redirects': {'sysfs': '/proc/sys/net/ipv4/conf/*/accept_redirects'},
- 'send_redirects': {'sysfs': '/proc/sys/net/ipv4/conf/*/send_redirects'},
- 'syn_cookies': {'sysfs': '/proc/sys/net/ipv4/tcp_syncookies'},
- 'twa_hazards_protection': {'sysfs': '/proc/sys/net/ipv4/tcp_rfc1337'}
-}
+sysctl_file = r'/run/sysctl/10-vyos-firewall.conf'
valid_groups = [
'address_group',
@@ -351,7 +339,7 @@ def verify(firewall):
verify_nested_group(group_name, group, groups, [])
if 'ipv4' in firewall:
- for name in ['name','forward','input','output']:
+ for name in ['name','forward','input','output', 'prerouting']:
if name in firewall['ipv4']:
for name_id, name_conf in firewall['ipv4'][name].items():
if 'jump' in name_conf['default_action'] and 'default_jump_target' not in name_conf:
@@ -371,7 +359,7 @@ def verify(firewall):
verify_rule(firewall, rule_conf, False)
if 'ipv6' in firewall:
- for name in ['name','forward','input','output']:
+ for name in ['name','forward','input','output', 'prerouting']:
if name in firewall['ipv6']:
for name_id, name_conf in firewall['ipv6'][name].items():
if 'jump' in name_conf['default_action'] and 'default_jump_target' not in name_conf:
@@ -467,33 +455,16 @@ def generate(firewall):
local_zone_conf['from_local'][zone] = zone_conf['from'][local_zone]
render(nftables_conf, 'firewall/nftables.j2', firewall)
+ render(sysctl_file, 'firewall/sysctl-firewall.conf.j2', firewall)
return None
-def apply_sysfs(firewall):
- for name, conf in sysfs_config.items():
- paths = glob(conf['sysfs'])
- value = None
-
- if name in firewall['global_options']:
- conf_value = firewall['global_options'][name]
- if conf_value in conf:
- value = conf[conf_value]
- elif conf_value == 'enable':
- value = '1'
- elif conf_value == 'disable':
- value = '0'
-
- if value:
- for path in paths:
- with open(path, 'w') as f:
- f.write(value)
-
def apply(firewall):
install_result, output = rc_cmd(f'nft --file {nftables_conf}')
if install_result == 1:
raise ConfigError(f'Failed to apply firewall: {output}')
- apply_sysfs(firewall)
+ # Apply firewall global-options sysctl settings
+ cmd(f'sysctl -f {sysctl_file}')
call_dependents()
diff --git a/src/conf_mode/system_conntrack.py b/src/conf_mode/system_conntrack.py
index 031fe63b0..aa290788c 100755
--- a/src/conf_mode/system_conntrack.py
+++ b/src/conf_mode/system_conntrack.py
@@ -18,6 +18,7 @@ import os
from sys import exit
+from vyos.base import Warning
from vyos.config import Config
from vyos.configdep import set_dependents, call_dependents
from vyos.utils.dict import dict_search
@@ -165,6 +166,8 @@ def verify(conntrack):
if not group_obj:
Warning(f'{error_group} "{group_name}" has no members!')
+ Warning(f'It is prefered to define {inet} conntrack ignore rules in <firewall {inet} prerouting raw> section')
+
if dict_search_args(conntrack, 'timeout', 'custom', inet, 'rule') != None:
for rule, rule_config in conntrack['timeout']['custom'][inet]['rule'].items():
if 'protocol' not in rule_config: