diff options
Diffstat (limited to 'smoketest/scripts/cli/test_firewall.py')
| -rwxr-xr-x | smoketest/scripts/cli/test_firewall.py | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/smoketest/scripts/cli/test_firewall.py b/smoketest/scripts/cli/test_firewall.py new file mode 100755 index 000000000..b8f944575 --- /dev/null +++ b/smoketest/scripts/cli/test_firewall.py @@ -0,0 +1,233 @@ +#!/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 unittest + +from glob import glob + +from base_vyostest_shim import VyOSUnitTestSHIM + +from vyos.util import cmd + +sysfs_config = { + 'all_ping': {'sysfs': '/proc/sys/net/ipv4/icmp_echo_ignore_all', 'default': '0', 'test_value': 'disable'}, + 'broadcast_ping': {'sysfs': '/proc/sys/net/ipv4/icmp_echo_ignore_broadcasts', 'default': '1', 'test_value': 'enable'}, + 'ip_src_route': {'sysfs': '/proc/sys/net/ipv4/conf/*/accept_source_route', 'default': '0', 'test_value': 'enable'}, + 'ipv6_receive_redirects': {'sysfs': '/proc/sys/net/ipv6/conf/*/accept_redirects', 'default': '0', 'test_value': 'enable'}, + 'ipv6_src_route': {'sysfs': '/proc/sys/net/ipv6/conf/*/accept_source_route', 'default': '-1', 'test_value': 'enable'}, + 'log_martians': {'sysfs': '/proc/sys/net/ipv4/conf/all/log_martians', 'default': '1', 'test_value': 'disable'}, + 'receive_redirects': {'sysfs': '/proc/sys/net/ipv4/conf/*/accept_redirects', 'default': '0', 'test_value': 'enable'}, + 'send_redirects': {'sysfs': '/proc/sys/net/ipv4/conf/*/send_redirects', 'default': '1', 'test_value': 'disable'}, + 'syn_cookies': {'sysfs': '/proc/sys/net/ipv4/tcp_syncookies', 'default': '1', 'test_value': 'disable'}, + 'twa_hazards_protection': {'sysfs': '/proc/sys/net/ipv4/tcp_rfc1337', 'default': '0', 'test_value': 'enable'} +} + +class TestFirewall(VyOSUnitTestSHIM.TestCase): + @classmethod + def setUpClass(cls): + super(TestFirewall, cls).setUpClass() + + # ensure we can also run this test on a live system - so lets clean + # out the current configuration :) + cls.cli_delete(cls, ['firewall']) + + cls.cli_set(cls, ['interfaces', 'ethernet', 'eth0', 'address', '172.16.10.1/24']) + + @classmethod + def tearDownClass(cls): + cls.cli_delete(cls, ['interfaces', 'ethernet', 'eth0', 'address', '172.16.10.1/24']) + super(TestFirewall, cls).tearDownClass() + + def tearDown(self): + self.cli_delete(['interfaces', 'ethernet', 'eth0', 'firewall']) + self.cli_delete(['firewall']) + self.cli_commit() + + def test_groups(self): + self.cli_set(['firewall', 'group', 'mac-group', 'smoketest_mac', 'mac-address', '00:01:02:03:04:05']) + self.cli_set(['firewall', 'group', 'network-group', 'smoketest_network', 'network', '172.16.99.0/24']) + self.cli_set(['firewall', 'group', 'port-group', 'smoketest_port', 'port', '53']) + self.cli_set(['firewall', 'group', 'port-group', 'smoketest_port', 'port', '123']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'action', 'accept']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'source', 'group', 'network-group', 'smoketest_network']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'destination', 'address', '172.16.10.10']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'destination', 'group', 'port-group', 'smoketest_port']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'protocol', 'tcp_udp']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'action', 'accept']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'source', 'group', 'mac-group', 'smoketest_mac']) + + self.cli_set(['interfaces', 'ethernet', 'eth0', 'firewall', 'in', 'name', 'smoketest']) + + self.cli_commit() + + nftables_search = [ + ['iifname "eth0"', 'jump NAME_smoketest'], + ['ip saddr { 172.16.99.0/24 }', 'ip daddr 172.16.10.10', 'th dport { 53, 123 }', 'return'], + ['ether saddr { 00:01:02:03:04:05 }', 'return'] + ] + + nftables_output = cmd('sudo nft list table ip filter') + + for search in nftables_search: + matched = False + for line in nftables_output.split("\n"): + if all(item in line for item in search): + matched = True + break + self.assertTrue(matched, msg=search) + + def test_basic_rules(self): + self.cli_set(['firewall', 'name', 'smoketest', 'default-action', 'drop']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'action', 'accept']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'source', 'address', '172.16.20.10']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'destination', 'address', '172.16.10.10']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'action', 'reject']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'protocol', 'tcp']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'destination', 'port', '8888']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'tcp', 'flags', 'syn']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'tcp', 'flags', 'not', 'ack']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '3', 'action', 'accept']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '3', 'protocol', 'tcp']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '3', 'destination', 'port', '22']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '3', 'limit', 'rate', '5/minute']) + + self.cli_set(['interfaces', 'ethernet', 'eth0', 'firewall', 'in', 'name', 'smoketest']) + + self.cli_commit() + + nftables_search = [ + ['iifname "eth0"', 'jump NAME_smoketest'], + ['saddr 172.16.20.10', 'daddr 172.16.10.10', 'return'], + ['tcp flags & (syn | ack) == syn', 'tcp dport { 8888 }', 'reject'], + ['tcp dport { 22 }', 'limit rate 5/minute', 'return'], + ['smoketest default-action', 'drop'] + ] + + nftables_output = cmd('sudo nft list table ip filter') + + for search in nftables_search: + matched = False + for line in nftables_output.split("\n"): + if all(item in line for item in search): + matched = True + break + self.assertTrue(matched, msg=search) + + def test_basic_rules_ipv6(self): + self.cli_set(['firewall', 'ipv6-name', 'v6-smoketest', 'default-action', 'drop']) + self.cli_set(['firewall', 'ipv6-name', 'v6-smoketest', 'rule', '1', 'action', 'accept']) + self.cli_set(['firewall', 'ipv6-name', 'v6-smoketest', 'rule', '1', 'source', 'address', '2002::1']) + self.cli_set(['firewall', 'ipv6-name', 'v6-smoketest', 'rule', '1', 'destination', 'address', '2002::1:1']) + self.cli_set(['firewall', 'ipv6-name', 'v6-smoketest', 'rule', '2', 'action', 'reject']) + self.cli_set(['firewall', 'ipv6-name', 'v6-smoketest', 'rule', '2', 'protocol', 'tcp_udp']) + self.cli_set(['firewall', 'ipv6-name', 'v6-smoketest', 'rule', '2', 'destination', 'port', '8888']) + + self.cli_set(['interfaces', 'ethernet', 'eth0', 'firewall', 'in', 'ipv6-name', 'v6-smoketest']) + + self.cli_commit() + + nftables_search = [ + ['iifname "eth0"', 'jump NAME6_v6-smoketest'], + ['saddr 2002::1', 'daddr 2002::1:1', 'return'], + ['meta l4proto { tcp, udp }', 'th dport { 8888 }', 'reject'], + ['smoketest default-action', 'drop'] + ] + + nftables_output = cmd('sudo nft list table ip6 filter') + + for search in nftables_search: + matched = False + for line in nftables_output.split("\n"): + if all(item in line for item in search): + matched = True + break + self.assertTrue(matched, msg=search) + + def test_state_policy(self): + self.cli_set(['firewall', 'state-policy', 'established', 'action', 'accept']) + self.cli_set(['firewall', 'state-policy', 'related', 'action', 'accept']) + self.cli_set(['firewall', 'state-policy', 'invalid', 'action', 'drop']) + + self.cli_commit() + + chains = { + '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']: + for chain in chains[table]: + nftables_output = cmd(f'sudo nft list chain {table} {chain}') + self.assertTrue('jump VYOS_STATE_POLICY' in nftables_output) + + def test_state_and_status_rules(self): + self.cli_set(['firewall', 'name', 'smoketest', 'default-action', 'drop']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'action', 'accept']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'state', 'established', 'enable']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'state', 'related', 'enable']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'action', 'reject']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'state', 'invalid', 'enable']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '3', 'action', 'accept']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '3', 'state', 'new', 'enable']) + + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '3', 'connection-status', 'nat', 'destination']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '4', 'action', 'accept']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '4', 'state', 'new', 'enable']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '4', 'state', 'established', 'enable']) + self.cli_set(['firewall', 'name', 'smoketest', 'rule', '4', 'connection-status', 'nat', 'source']) + + self.cli_set(['interfaces', 'ethernet', 'eth0', 'firewall', 'in', 'name', 'smoketest']) + + self.cli_commit() + + nftables_search = [ + ['iifname "eth0"', 'jump NAME_smoketest'], + ['ct state { established, related }', 'return'], + ['ct state { invalid }', 'reject'], + ['ct state { new }', 'ct status { dnat }', 'return'], + ['ct state { established, new }', 'ct status { snat }', 'return'], + ['smoketest default-action', 'drop'] + ] + + nftables_output = cmd('sudo nft list table ip filter') + + for search in nftables_search: + matched = False + for line in nftables_output.split("\n"): + if all(item in line for item in search): + matched = True + break + self.assertTrue(matched, msg=search) + + def test_sysfs(self): + for name, conf in sysfs_config.items(): + paths = glob(conf['sysfs']) + for path in paths: + with open(path, 'r') as f: + self.assertEqual(f.read().strip(), conf['default'], msg=path) + + self.cli_set(['firewall', name.replace("_", "-"), conf['test_value']]) + + self.cli_commit() + + for name, conf in sysfs_config.items(): + paths = glob(conf['sysfs']) + for path in paths: + with open(path, 'r') as f: + self.assertNotEqual(f.read().strip(), conf['default'], msg=path) + +if __name__ == '__main__': + unittest.main(verbosity=2) |