Client Server

These scenarios show how to configure an OpenVPN tunnel using a client/server topology.

Basic Tunnel

Description

A simple client/server tunnel is created between two devices

Scenario

Step 1: Set the following configuration in DUT0:

set interfaces ethernet eth0 address 192.168.100.1/24
set interfaces openvpn ovpn1 local-endpoint 10.0.0.0/29
set interfaces openvpn ovpn1 mode server tls-profile TLS
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set vpn openvpn tls-profile TLS ca 'running://ca.crt'
set vpn openvpn tls-profile TLS certificate 'running://server.crt'
set vpn openvpn tls-profile TLS dhparam 'running://dh.pem'
set vpn openvpn tls-profile TLS private-key 'running://server.priv.pem'

Step 2: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 192.168.100.2/24
set interfaces openvpn ovpn1 mode client tls-profile TLS
set interfaces openvpn ovpn1 peer 1 address 192.168.100.1
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set vpn openvpn tls-profile TLS ca 'running://ca.crt'
set vpn openvpn tls-profile TLS certificate 'running://client.crt'
set vpn openvpn tls-profile TLS private-key 'running://client.priv.pem'

Step 3: Ping IP address 192.168.100.2 from DUT0:

admin@DUT0$ ping 192.168.100.2 count 1 size 56 timeout 1

Show output

PING 192.168.100.2 (192.168.100.2) 56(84) bytes of data.
64 bytes from 192.168.100.2: icmp_seq=1 ttl=64 time=0.277 ms

--- 192.168.100.2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.277/0.277/0.277/0.000 ms

Step 4: Run command interfaces openvpn ovpn1 status at DUT1 and check if output contains the following tokens:

CONNECTED

Show output

OpenVPN interface ovpn1
State: CONNECTED (SUCCESS)
Local endpoint: 10.0.0.2:1194
Remote: 192.168.100.1

Step 5: Ping IP address 10.0.0.1 from DUT1:

admin@DUT1$ ping 10.0.0.1 count 1 size 56 timeout 1

Show output

PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
64 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.795 ms

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.795/0.795/0.795/0.000 ms

Step 6: Run command interfaces openvpn ovpn1 clients at DUT0 and check if output contains the following tokens:

Client

Show output

-----------------------------------------------------------------------------------
Common Name       Address        Endpoint    Connected since         Last seen
-----------------------------------------------------------------------------------
Client       192.168.100.2:1194  10.0.0.2  2024-07-17 15:21:30  2024-07-17 15:21:30

---

Client Static IP

Description

A client is given a static IP address based on its common name

Scenario

Step 1: Set the following configuration in DUT0:

set interfaces ethernet eth0 address 192.168.100.1/24
set interfaces openvpn ovpn1 local-endpoint 10.0.0.0/29
set interfaces openvpn ovpn1 mode server server-profile SRV
set interfaces openvpn ovpn1 mode server tls-profile TLS
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set vpn openvpn server-profile SRV client Client address 10.0.0.3
set vpn openvpn tls-profile TLS ca 'running://ca.crt'
set vpn openvpn tls-profile TLS certificate 'running://server.crt'
set vpn openvpn tls-profile TLS dhparam 'running://dh.pem'
set vpn openvpn tls-profile TLS private-key 'running://server.priv.pem'

Step 2: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 192.168.100.2/24
set interfaces openvpn ovpn1 mode client tls-profile TLS
set interfaces openvpn ovpn1 peer 1 address 192.168.100.1
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set vpn openvpn tls-profile TLS ca 'running://ca.crt'
set vpn openvpn tls-profile TLS certificate 'running://client.crt'
set vpn openvpn tls-profile TLS private-key 'running://client.priv.pem'

Step 3: Ping IP address 192.168.100.2 from DUT0:

admin@DUT0$ ping 192.168.100.2 count 1 size 56 timeout 1

Show output

PING 192.168.100.2 (192.168.100.2) 56(84) bytes of data.
64 bytes from 192.168.100.2: icmp_seq=1 ttl=64 time=0.247 ms

--- 192.168.100.2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.247/0.247/0.247/0.000 ms

Step 4: Run command interfaces openvpn ovpn1 status at DUT1 and check if output contains the following tokens:

CONNECTED

Show output

OpenVPN interface ovpn1
State: CONNECTED (SUCCESS)
Local endpoint: 10.0.0.3:1194
Remote: 192.168.100.1

Step 5: Ping IP address 10.0.0.3 from DUT0:

admin@DUT0$ ping 10.0.0.3 count 1 size 56 timeout 1

Show output

PING 10.0.0.3 (10.0.0.3) 56(84) bytes of data.
64 bytes from 10.0.0.3: icmp_seq=1 ttl=64 time=0.724 ms

--- 10.0.0.3 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.724/0.724/0.724/0.000 ms

---

Disconnect By Common Name

Description

A client is forcefully disconnected by the server by the client’s common name

Scenario

Step 1: Set the following configuration in DUT0:

set interfaces ethernet eth0 address 192.168.100.1/24
set interfaces openvpn ovpn1 local-endpoint 10.0.0.0/29
set interfaces openvpn ovpn1 mode server tls-profile TLS
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set vpn openvpn tls-profile TLS ca 'running://ca.crt'
set vpn openvpn tls-profile TLS certificate 'running://server.crt'
set vpn openvpn tls-profile TLS dhparam 'running://dh.pem'
set vpn openvpn tls-profile TLS private-key 'running://server.priv.pem'

Step 2: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 192.168.100.2/24
set interfaces openvpn ovpn1 mode client tls-profile TLS
set interfaces openvpn ovpn1 peer 1 address 192.168.100.1
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set vpn openvpn tls-profile TLS ca 'running://ca.crt'
set vpn openvpn tls-profile TLS certificate 'running://client.crt'
set vpn openvpn tls-profile TLS private-key 'running://client.priv.pem'

Step 3: Ping IP address 192.168.100.2 from DUT0:

admin@DUT0$ ping 192.168.100.2 count 1 size 56 timeout 1

Show output

PING 192.168.100.2 (192.168.100.2) 56(84) bytes of data.
64 bytes from 192.168.100.2: icmp_seq=1 ttl=64 time=0.241 ms

--- 192.168.100.2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.241/0.241/0.241/0.000 ms

Step 4: Run command interfaces openvpn ovpn1 status at DUT1 and check if output contains the following tokens:

CONNECTED

Show output

OpenVPN interface ovpn1
State: CONNECTED (SUCCESS)
Local endpoint: 10.0.0.2:1194
Remote: 192.168.100.1

Step 5: Ping IP address 10.0.0.1 from DUT1:

admin@DUT1$ ping 10.0.0.1 count 1 size 56 timeout 1

Show output

PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
64 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.691 ms

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.691/0.691/0.691/0.000 ms

Step 6: Run command interfaces openvpn ovpn1 disconnect common-name Client at DUT0 and expect this output:

Show output

common name 'Client' found, 1 client(s) killed

Step 7: Expect a failure in the following command: Ping IP address 10.0.0.1 from DUT1:

admin@DUT1$ ping 10.0.0.1 count 1 size 56 timeout 1

Show output

PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

Step 8: Run command interfaces openvpn ovpn1 clients at DUT0 and check if output does not match the following regular expressions:

Client

Show output

----------------------------------------------------------
Common Name  Address  Endpoint  Connected since  Last seen
----------------------------------------------------------

---

Disconnect By Address

Description

A client is forcefully disconnected by the server by the client’s address

Scenario

Step 1: Set the following configuration in DUT0:

set interfaces ethernet eth0 address 192.168.100.1/24
set interfaces openvpn ovpn1 local-endpoint 10.0.0.0/29
set interfaces openvpn ovpn1 mode server tls-profile TLS
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set vpn openvpn tls-profile TLS ca 'running://ca.crt'
set vpn openvpn tls-profile TLS certificate 'running://server.crt'
set vpn openvpn tls-profile TLS dhparam 'running://dh.pem'
set vpn openvpn tls-profile TLS private-key 'running://server.priv.pem'

Step 2: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 192.168.100.2/24
set interfaces openvpn ovpn1 mode client tls-profile TLS
set interfaces openvpn ovpn1 peer 1 address 192.168.100.1
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set vpn openvpn tls-profile TLS ca 'running://ca.crt'
set vpn openvpn tls-profile TLS certificate 'running://client.crt'
set vpn openvpn tls-profile TLS private-key 'running://client.priv.pem'

Step 3: Ping IP address 192.168.100.2 from DUT0:

admin@DUT0$ ping 192.168.100.2 count 1 size 56 timeout 1

Show output

PING 192.168.100.2 (192.168.100.2) 56(84) bytes of data.
64 bytes from 192.168.100.2: icmp_seq=1 ttl=64 time=0.456 ms

--- 192.168.100.2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.456/0.456/0.456/0.000 ms

Step 4: Run command interfaces openvpn ovpn1 status at DUT1 and check if output contains the following tokens:

CONNECTED

Show output

OpenVPN interface ovpn1
State: CONNECTED (SUCCESS)
Local endpoint: 10.0.0.2:1194
Remote: 192.168.100.1

Step 5: Ping IP address 10.0.0.1 from DUT1:

admin@DUT1$ ping 10.0.0.1 count 1 size 56 timeout 1

Show output

PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
64 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.587 ms

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.587/0.587/0.587/0.000 ms

Step 6: Run command interfaces openvpn ovpn1 disconnect address 192.168.100.2 1194 at DUT0 and expect this output:

Show output

1 client(s) at address 192.168.100.2

Step 7: Expect a failure in the following command: Ping IP address 10.0.0.1 from DUT1:

admin@DUT1$ ping 10.0.0.1 count 1 size 56 timeout 1

Show output

PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

Step 8: Run command interfaces openvpn ovpn1 clients at DUT0 and check if output does not match the following regular expressions:

Client

Show output

----------------------------------------------------------
Common Name  Address  Endpoint  Connected since  Last seen
----------------------------------------------------------

---

SCEP

Description

A simple client/server tunnel is created between two devices using SCEP to get the necessary keys and certificates

Scenario

Step 1: Set the following configuration in DUT0:

set interfaces ethernet eth1 address 10.215.168.64/24
set interfaces ethernet eth1 tcp-mss 1200
set protocols static route 192.168.212.0/22 next-hop 10.215.168.1
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1:

set interfaces ethernet eth1 address 10.215.168.65/24
set interfaces ethernet eth1 tcp-mss 1200
set protocols static route 192.168.212.0/22 next-hop 10.215.168.1
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Ping IP address 192.168.213.25 from DUT0:

admin@DUT0$ ping 192.168.213.25 count 1 size 56 timeout 1

Show output

PING 192.168.213.25 (192.168.213.25) 56(84) bytes of data.
64 bytes from 192.168.213.25: icmp_seq=1 ttl=126 time=0.646 ms

--- 192.168.213.25 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.646/0.646/0.646/0.000 ms

Step 4: Ping IP address 192.168.213.25 from DUT1:

admin@DUT1$ ping 192.168.213.25 count 1 size 56 timeout 1

Show output

PING 192.168.213.25 (192.168.213.25) 56(84) bytes of data.
64 bytes from 192.168.213.25: icmp_seq=1 ttl=126 time=0.697 ms

--- 192.168.213.25 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.697/0.697/0.697/0.000 ms

Step 5: Modify the following configuration lines in DUT0:

set interfaces ethernet eth0 address 192.168.100.1/24
set interfaces openvpn ovpn1 local-endpoint 10.0.0.0/29
set interfaces openvpn ovpn1 mode server tls-profile TLS
set system certificate scep csr CSR cgi-path CertSrv/mscep/mscep.dll/pkiclient.exe
set system certificate scep csr CSR distinguished-names CN=Server
set system certificate scep csr CSR encrypted-password U2FsdGVkX1+gDP0kJkuo8KDOgvXeoueAbcodF79Wo6FvWgzl+/+5/JEkvxRTl5mt34xXQlLph3+OlqQg2iG1eA==
set system certificate scep csr CSR url 'http://192.168.213.25/'
set vpn openvpn tls-profile TLS csr CSR
set vpn openvpn tls-profile TLS dhparam 'running://dh.pem'

Step 6: Modify the following configuration lines in DUT1:

set interfaces ethernet eth0 address 192.168.100.2/24
set interfaces openvpn ovpn1 mode client tls-profile TLS
set interfaces openvpn ovpn1 peer 1 address 192.168.100.1
set system certificate scep csr CSR cgi-path CertSrv/mscep/mscep.dll/pkiclient.exe
set system certificate scep csr CSR distinguished-names CN=Client
set system certificate scep csr CSR encrypted-password U2FsdGVkX1+PxOtZ8fKQmrgvFNzMbN7L1h2ihlzQElI1WGA/bkmKUkIluRCwKicW/JAw19ZjB7Ho1OITWpjsvg==
set system certificate scep csr CSR url 'http://192.168.213.25/'
set vpn openvpn tls-profile TLS csr CSR

Step 7: Run command pki scep show CSR at DUT0 and check if output matches the following regular expressions:

USER_CERT\s+Valid

Show output

-----------------------------------------------------------------------
Certificate  Status         NotBefore                  NotAfter
-----------------------------------------------------------------------
CA_CERT      Valid   Dec 14 10:00:35 2023 GMT  Dec 14 10:10:34 2053 GMT
USER_CERT    Valid   Jul 17 15:08:19 2024 GMT  Jul 17 15:08:19 2026 GMT

Step 8: Ping IP address 192.168.100.2 from DUT0:

admin@DUT0$ ping 192.168.100.2 count 1 size 56 timeout 1

Show output

PING 192.168.100.2 (192.168.100.2) 56(84) bytes of data.
64 bytes from 192.168.100.2: icmp_seq=1 ttl=64 time=0.332 ms

--- 192.168.100.2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.332/0.332/0.332/0.000 ms

Step 9: Run command interfaces openvpn ovpn1 status at DUT1 and check if output contains the following tokens:

CONNECTED

Show output

OpenVPN interface ovpn1
State: CONNECTED (SUCCESS)
Local endpoint: 10.0.0.2:1194
Remote: 192.168.100.1

Step 10: Ping IP address 10.0.0.1 from DUT1:

admin@DUT1$ ping 10.0.0.1 count 1 size 56 timeout 1

Show output

PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
64 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.878 ms

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.878/0.878/0.878/0.000 ms

---