1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
|
#!/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):
hostmap_path = ['system', 'static-host-mapping', 'host-name']
example_org = ['192.0.2.8', '192.0.2.10', '192.0.2.11']
self.cli_set(hostmap_path + ['example.com', 'inet', '192.0.2.5'])
for ips in example_org:
self.cli_set(hostmap_path + ['example.org', 'inet', ips])
self.cli_commit()
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', 'group', 'domain-group', 'smoketest_domain', 'address', 'example.com'])
self.cli_set(['firewall', 'group', 'domain-group', 'smoketest_domain', 'address', 'example.org'])
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(['firewall', 'name', 'smoketest', 'rule', '3', 'action', 'accept'])
self.cli_set(['firewall', 'name', 'smoketest', 'rule', '3', 'source', 'group', 'domain-group', 'smoketest_domain'])
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'],
['set smoketest_domain'],
['elements = { 192.0.2.5, 192.0.2.8,'],
['192.0.2.10, 192.0.2.11 }'],
['ip saddr @smoketest_domain', '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)
self.cli_delete(['system', 'static-host-mapping'])
self.cli_commit()
def test_basic_rules(self):
self.cli_set(['firewall', 'name', 'smoketest', 'default-action', 'drop'])
self.cli_set(['firewall', 'name', 'smoketest', 'enable-default-log'])
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', '1', 'log', 'enable'])
self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'log-level', 'debug'])
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', 'log', 'enable'])
self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'log-level', 'err'])
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(['firewall', 'name', 'smoketest', 'rule', '3', 'log', 'disable'])
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', 'log prefix "[smoketest-1-A]" level debug','return'],
['tcp flags & (syn | ack) == syn', 'tcp dport { 8888 }', 'log prefix "[smoketest-2-R]" level err', 'reject'],
['tcp dport { 22 }', 'limit rate 5/minute', 'return'],
['log prefix "[smoketest-default-D]"','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', 'enable-default-log'])
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', '1', 'log', 'enable'])
self.cli_set(['firewall', 'ipv6-name', 'v6-smoketest', 'rule', '1', 'log-level', 'crit'])
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', 'log prefix "[v6-smoketest-1-A]" level crit', 'return'],
['meta l4proto { tcp, udp }', 'th dport { 8888 }', 'reject'],
['smoketest default-action', 'log prefix "[v6-smoketest-default-D]"', '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)
|
