diff options
Diffstat (limited to 'src')
| -rwxr-xr-x | src/conf_mode/firewall.py | 43 | ||||
| -rwxr-xr-x | src/conf_mode/system_conntrack.py | 3 | ||||
| -rwxr-xr-x | src/migration-scripts/firewall/15-to-16 | 55 |
3 files changed, 65 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: diff --git a/src/migration-scripts/firewall/15-to-16 b/src/migration-scripts/firewall/15-to-16 new file mode 100755 index 000000000..7c8d38fe6 --- /dev/null +++ b/src/migration-scripts/firewall/15-to-16 @@ -0,0 +1,55 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2022-2024 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/>. + +# T6394: Migrate conntrack timeout options to firewall global-options + # from: set system conntrack timeout .. + # to: set firewall global-options timeout ... + +from sys import argv +from sys import exit + +from vyos.configtree import ConfigTree + +if len(argv) < 2: + print("Must specify file name!") + exit(1) + +file_name = argv[1] + +with open(file_name, 'r') as f: + config_file = f.read() + +firewall_base = ['firewall', 'global-options'] +conntrack_base = ['system', 'conntrack', 'timeout'] +config = ConfigTree(config_file) + +if not config.exists(conntrack_base): + # Nothing to do + exit(0) + +for protocol in ['icmp', 'tcp', 'udp', 'other']: + if config.exists(conntrack_base + [protocol]): + if not config.exists(firewall_base): + config.set(firewall_base + ['timeout']) + config.copy(conntrack_base + [protocol], firewall_base + ['timeout', protocol]) + config.delete(conntrack_base + [protocol]) + +try: + with open(file_name, 'w') as f: + f.write(config.to_string()) +except OSError as e: + print("Failed to save the modified config: {}".format(e)) + exit(1)
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