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#!/usr/bin/env python3
#
# Copyright (C) 2021-2025 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 base_vyostest_shim import VyOSUnitTestSHIM
from vyos.firewall import find_nftables_rule
from vyos.utils.process import process_named_running
from vyos.utils.file import read_file
tunnel_path = ['interfaces', 'tunnel']
nhrp_path = ['protocols', 'nhrp']
vpn_path = ['vpn', 'ipsec']
PROCESS_NAME = 'nhrpd'
class TestProtocolsNHRP(VyOSUnitTestSHIM.TestCase):
@classmethod
def setUpClass(cls):
super(TestProtocolsNHRP, cls).setUpClass()
# ensure we can also run this test on a live system - so lets clean
# out the current configuration :)
cls.cli_delete(cls, nhrp_path)
cls.cli_delete(cls, tunnel_path)
def tearDown(self):
self.cli_delete(nhrp_path)
self.cli_delete(tunnel_path)
self.cli_commit()
def test_01_nhrp_config(self):
tunnel_if = "tun100"
tunnel_ip = '172.16.253.134/32'
tunnel_source = "192.0.2.134"
tunnel_encapsulation = "gre"
esp_group = "ESP-HUB"
ike_group = "IKE-HUB"
nhrp_secret = "vyos123"
nhrp_profile = "NHRPVPN"
nhrp_holdtime = '300'
nhs_tunnelip = '172.16.253.1'
nhs_nbmaip = '192.0.2.1'
map_tunnelip = '172.16.253.135'
map_nbmaip = "192.0.2.135"
nhrp_networkid = '1'
ipsec_secret = "secret"
multicat_log_group = '2'
redirect_log_group = '1'
# Tunnel
self.cli_set(tunnel_path + [tunnel_if, "address", tunnel_ip])
self.cli_set(tunnel_path + [tunnel_if, "encapsulation", tunnel_encapsulation])
self.cli_set(tunnel_path + [tunnel_if, "source-address", tunnel_source])
self.cli_set(tunnel_path + [tunnel_if, "enable-multicast"])
self.cli_set(tunnel_path + [tunnel_if, "parameters", "ip", "key", "1"])
# NHRP
self.cli_set(nhrp_path + ["tunnel", tunnel_if, "authentication", nhrp_secret])
self.cli_set(nhrp_path + ["tunnel", tunnel_if, "holdtime", nhrp_holdtime])
self.cli_set(nhrp_path + ["tunnel", tunnel_if, "multicast", nhs_tunnelip])
self.cli_set(nhrp_path + ["tunnel", tunnel_if, "redirect"])
self.cli_set(nhrp_path + ["tunnel", tunnel_if, "shortcut"])
self.cli_set(nhrp_path + ["tunnel", tunnel_if, "registration-no-unique"])
self.cli_set(nhrp_path + ["tunnel", tunnel_if, "network-id", nhrp_networkid])
self.cli_set(nhrp_path + ["tunnel", tunnel_if, "nhs", "tunnel-ip", nhs_tunnelip, "nbma", nhs_nbmaip])
self.cli_set(nhrp_path + ["tunnel", tunnel_if, "map", "tunnel-ip", map_tunnelip, "nbma", map_nbmaip])
# IKE/ESP Groups
self.cli_set(vpn_path + ["esp-group", esp_group, "lifetime", "1800"])
self.cli_set(vpn_path + ["esp-group", esp_group, "mode", "transport"])
self.cli_set(vpn_path + ["esp-group", esp_group, "pfs", "dh-group2"])
self.cli_set(vpn_path + ["esp-group", esp_group, "proposal", "1", "encryption", "aes256"])
self.cli_set(vpn_path + ["esp-group", esp_group, "proposal", "1", "hash", "sha1"])
self.cli_set(vpn_path + ["esp-group", esp_group, "proposal", "2", "encryption", "3des"])
self.cli_set(vpn_path + ["esp-group", esp_group, "proposal", "2", "hash", "md5"])
self.cli_set(vpn_path + ["ike-group", ike_group, "key-exchange", "ikev1"])
self.cli_set(vpn_path + ["ike-group", ike_group, "lifetime", "3600"])
self.cli_set(vpn_path + ["ike-group", ike_group, "proposal", "1", "dh-group", "2"])
self.cli_set(vpn_path + ["ike-group", ike_group, "proposal", "1", "encryption", "aes256"])
self.cli_set(vpn_path + ["ike-group", ike_group, "proposal", "1", "hash", "sha1"])
self.cli_set(vpn_path + ["ike-group", ike_group, "proposal", "2", "dh-group", "2"])
self.cli_set(vpn_path + ["ike-group", ike_group, "proposal", "2", "encryption", "aes128"])
self.cli_set(vpn_path + ["ike-group", ike_group, "proposal", "2", "hash", "sha1"])
# Profile - Not doing full DMVPN checks here, just want to verify the profile name in the output
self.cli_set(vpn_path + ["interface", "eth0"])
self.cli_set(vpn_path + ["profile", nhrp_profile, "authentication", "mode", "pre-shared-secret"])
self.cli_set(vpn_path + ["profile", nhrp_profile, "authentication", "pre-shared-secret", ipsec_secret])
self.cli_set(vpn_path + ["profile", nhrp_profile, "bind", "tunnel", tunnel_if])
self.cli_set(vpn_path + ["profile", nhrp_profile, "esp-group", esp_group])
self.cli_set(vpn_path + ["profile", nhrp_profile, "ike-group", ike_group])
self.cli_commit()
frrconfig = self.getFRRconfig(f'interface {tunnel_if}', endsection='^exit')
self.assertIn(f'interface {tunnel_if}', frrconfig)
self.assertIn(f' ip nhrp authentication {nhrp_secret}', frrconfig)
self.assertIn(f' ip nhrp holdtime {nhrp_holdtime}', frrconfig)
self.assertIn(f' ip nhrp map multicast {nhs_tunnelip}', frrconfig)
self.assertIn(f' ip nhrp redirect', frrconfig)
self.assertIn(f' ip nhrp registration no-unique', frrconfig)
self.assertIn(f' ip nhrp shortcut', frrconfig)
self.assertIn(f' ip nhrp network-id {nhrp_networkid}', frrconfig)
self.assertIn(f' ip nhrp nhs {nhs_tunnelip} nbma {nhs_nbmaip}', frrconfig)
self.assertIn(f' ip nhrp map {map_tunnelip} {map_nbmaip}', frrconfig)
self.assertIn(f' tunnel protection vici profile dmvpn-{nhrp_profile}-{tunnel_if}-child',
frrconfig)
nftables_search_multicast = [
['chain VYOS_NHRP_MULTICAST_OUTPUT'],
['type filter hook output priority filter + 10; policy accept;'],
[f'oifname "{tunnel_if}"', 'ip daddr 224.0.0.0/24', 'counter', f'log group {multicat_log_group}'],
[f'oifname "{tunnel_if}"', 'ip daddr 224.0.0.0/24', 'counter', 'drop'],
['chain VYOS_NHRP_MULTICAST_FORWARD'],
['type filter hook output priority filter + 10; policy accept;'],
[f'oifname "{tunnel_if}"', 'ip daddr 224.0.0.0/4', 'counter', f'log group {multicat_log_group}'],
[f'oifname "{tunnel_if}"', 'ip daddr 224.0.0.0/4', 'counter', 'drop']
]
nftables_search_redirect = [
['chain VYOS_NHRP_REDIRECT_FORWARD'],
['type filter hook forward priority filter + 10; policy accept;'],
[f'iifname "{tunnel_if}" oifname "{tunnel_if}"', 'meter loglimit-0 size 65535 { ip daddr & 255.255.255.0 . ip saddr & 255.255.255.0 timeout 1m limit rate 4/minute burst 1 packets }', 'counter', f'log group {redirect_log_group}']
]
self.verify_nftables(nftables_search_multicast, 'ip vyos_nhrp_multicast')
self.verify_nftables(nftables_search_redirect, 'ip vyos_nhrp_redirect')
self.assertTrue(process_named_running(PROCESS_NAME))
if __name__ == '__main__':
unittest.main(verbosity=2)
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