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
|
#!/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 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):
def setUp(self):
self.cli_set(['interfaces', 'ethernet', 'eth0', 'address', '172.16.10.1/24'])
def tearDown(self):
self.cli_delete(['interfaces', 'ethernet', 'eth0'])
self.cli_commit()
self.cli_delete(['firewall'])
self.cli_commit()
def test_groups(self):
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'])
self.cli_set(['interfaces', 'ethernet', 'eth0', 'firewall', 'in', 'name', 'smoketest'])
self.cli_commit()
nftables_search = [
['iifname "eth0"', 'jump smoketest'],
['ip saddr { 172.16.99.0/24 }', 'ip daddr 172.16.10.10', 'tcp dport { 53, 123 }', '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)
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_udp'])
self.cli_set(['firewall', 'name', 'smoketest', 'rule', '2', 'destination', 'port', '8888'])
self.cli_set(['interfaces', 'ethernet', 'eth0', 'firewall', 'in', 'name', 'smoketest'])
self.cli_commit()
nftables_search = [
['iifname "eth0"', 'jump smoketest'],
['saddr 172.16.20.10', 'daddr 172.16.10.10', 'return'],
['meta l4proto { tcp, udp }', 'th dport { 8888 }', 'reject'],
['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)
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 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)
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_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)
|
