Policy Based Site to Site VPN (AES 256) with Check Point NGX R61 (Simplified Mode VPN)
Configuring Juniper via WebUI
1.
Interfaces
Network > Interfaces > Edit (for trust): Enter the following, and then click Apply:
Zone Name: Trust
Static IP
IP Address / Netmask: 192.168.1.1 / 24 (Juniper Private Network)
Interface Mode: ROUTE
Network > Interfaces > Edit (for untrust): Enter the following, and then click Apply:
Zone Name: Untrust
Static IP
IP Address / Netmask: 200.200.200.34/ 28 (Juniper Public Network)
Interface Mode: ROUTE
2.
Addresses
Objects > Addresses > List > New: Enter the following and then click OK:
Address Name: Juniper LAN
IP Address/Domain Name:
IP/Netmask (select): 192.168.1.0/24
Zone: Trust
Objects > Addresses > List > New: Enter the following and then click OK:
Address Name: Checkpoint_LAN
IP Address/Domain Name:
IP/Netmask (select): 192.168.2.0/24
Zone: Untrust
(Optional) You will need to continue to add networks
Objects > Addresses > List > New: Enter the following and then click OK:
Address Name: Checkpoint_LAN VLAN4
IP Address/Domain Name:
IP/Netmask (select): 172.16.4.0/22
Zone: Untrust
3.
Proposals
VPNs > AutoKey Advanced > P1 Proposal > New: Enter the following and then click OK:
Name: Check Point PH1
Authentication Method: Preshare
DH Group: Group 2
Encryption Algorithm: AES-CBC(256 Bits)
Hash Algorithm: SHA-1
Lifetime: 1440 Min
VPNs > AutoKey Advanced > P2 Proposal > New: Enter the following and then click OK:
Name: Check Point PH2
Perfect Forward Secrecy: DH Group 2
Encapsulation
Encryption (ESP)
Encryption Algorithm: AES-CBC(256 Bits)
Authentication Algorithm: SHA-1
Lifetime: 3600 Sec (make sure you select the seconds button)
4.
VPN
VPNs > AutoKey Advanced > Gateway > New: Enter the following and then click OK:
Gateway Name: To R61 Checkpoint
Security Level: Custom
Remote Gateway Type:
Static IP Address (select), IP Address/Hostname: 100.200.150.34
Preshared Key
Preshared Key: abcd1234
Outgoing Interface: ethernet0/2 (Untrust)
 Advanced: Enter the following advanced settings, and then click RETURN to
return to the basic Gateway configuration page:
Security Level: Custom
Phase 1 Proposal (For Custom Security Level):
Check Point PH1
Mode (initiator): Main (ID Protection)
VPNs > AutoKey IKE > New: Enter the following and then click OK:
VPN Name: R61 Checkpoint VPN
Security Level: Custom
Remote Gateway: Predefined: (select): To R61 Checkpoint
 Advanced: Enter the following advanced settings, and then click RETURN to
return to the basic AutoKey IKE configuration page:
Security Level: Custom
Phase 2 Proposal (For Custom Security Level):
Check Point PH2
Replay Protection (select)
Check VPN Monitor
5.
6.
7.
8.
Route
Network > Routing > Routing Entries > trust-vr > New: Enter the following, and then click OK:
Network Address/Netmask: 192.168.2.0/24
Gateway: (select):
Interface: ethernet0/0 (untrust)
Gateway IP Address: 100.200.150.34
(Optional) You will need to add additional routes for the VPN networks.
Route
Network > Routing > Routing Entries > trust-vr > New: Enter the following, and then click OK:
Network Address/Netmask: 172.16.4.0/22
Gateway: (select):
Interface: untrust
Gateway IP Address: 100.200.150.34
Policies
Policies > (From: Trust, to: Untrust) New: Enter the following, and then click OK:
Source Address:
Address Book Entry: (select), Juniper LAN
Destination Address:
Address Book Entry: (select), Checkpoint _ LAN
Service: ANY
Action: Tunnel
Tunnel VPN: R61 Checkpoint VPN
Modify matching bidirectional VPN policy (select)
Position at Top: (select)
Logging
(Optional) You will need to create additional policies for the different networks
Policies
Policies > (From: Trust, to: Untrust) New: Enter the following, and then click OK:
Source Address:
Address Book Entry: (select), Juniper LAN
Destination Address:
Address Book Entry: (select), Checkpoint _LAN VLAN4
Service: ANY
Action: Tunnel
Tunnel VPN: R61 Checkpoint VPN
Modify matching bidirectional VPN policy (select)
Position at Top: (select)
Logging
Configuring Check Point:
-
This assumes your interfaces and default gateway is already set.
1.
Objects
Right click on Network Objects > New > Network: Enter the following then click OK:
Name: jn-192.168.1.0-juniper (Juniper Network)
Network Address: 192.168.1.0
Net Mask: 255.255.255.0
Right click on Network Objects > New > Network: Enter the following then click OK:
Name: cp-192.168.2.0 (Checkpoint Network)
Network Address: 192.168.2.0
Net Mask: 255.255.255.0
(Optional) Add for each additional network which will access the Juniper LAN
Right click on Network Objects > New > Network: Enter the following then click OK:
Name: cp-172.16.4.0
Network Address: 172.16.4.0
Net Mask: 255.255.252.0
Right click on Network Objects > New > Interoperable Device: Enter the following then click OK:
Name: jf-200.200.200.34-junpr (Juniper Firewall)
IP Address: 200.200.200.34
Topology > Manually Defined (select)
Choose > jn-192.168.1.0-juniper
Our CheckPoint Firewalls have already been defined
Edit the Check Point Gateway Object that will terminate the VPN: Enter the following then click OK:
IP Address: 100.200.150.34
Under Products (select VPN)
Topology > VPN Domain > Manually defined (select)
Choose > cp-192.168.2.0 (If you have multiple networks behind the
checkpoint create a group and use the group as the manually defined networks)
2.
VPN
Click on the VPN Manager tab > Right Click > New Community > Star: Enter the following then
click OK:
Name: junpr_checkpointR61
Center Gateways > Add (select): Check Point Gateway (cp-100.200.150.34
(Checkpoint Firewall))
Satellite Gateway >Add (select): Juniper NetScreen (jf-200.200.200.34-junpr
(Juniper Firewall))
VPN Properties
Phase 1
Perform key exchange encryption with: AES-256
Perform data integrity with: SHA1
Phase 2
Perform IPsec data encryption with: AES-256
Perform data integrity with: SHA1
Advanced Settings:
Shared Secret
(select) Use only Shared Secret for all External members
Edit > Enter Shared Secret > abcd1234
Click OK
Advanced VPN Properties:
IKE (Phase1) DH Group: Group 2 (1024 bit)
Renegotiate IKE 1440 min.
IPsec (Phase 2)
(select) Use Perfect Forward Secrecy DH Group 2 (1024 bit)
Renegotoate IPsec security associations every 3600 seconds
NAT
(select) Disable NAT inside the VPN community
3.
VPN Policy (Look at Policy rules 1, 2, and 4)
Click on Main Security Tab > Then Click on Rule 1 > Source >Enter the following:
Rule 1:
Source: Juniper NetScreen LAN (jn-192.168.1.0-juniper)
Destination: CheckPoint R61 LAN (cp-192.168.2.0 (Checkpoint Network))
VPN: Any Traffic
Service: ANY
Action: Accept
Track: Log
Install On: (Right Click > Add > Targets > Select Target)
Choose: The Check Point Gateway that will terminate the VPN
Rule 2:
Source CheckPoint R61 LAN (cp-192.168.2.0 (Checkpoint Network))
Destination: Juniper NetScreen LAN (jn-192.168.1.0-juniper)
VPN: Any Traffic
Service: ANY
Action: Accept
Track: Log
Install On: (Right Click > Add > Targets > Select Target)
Choose: The Check Point Gateway that will terminate the VPN
Rule 3:
Source Interoperable Juniper Firewall jf-200.200.200.34-junpr
Destination: Interoperable Juniper Firewall jf-200.200.200.34-junpr
Source Checkpoint Firewall cp-200.200.200.34
Destination: Checkpoint Firewall cp-200.200.200.34
VPN: Any Traffic
Service: ANY
Action: Accept
Track: Log
Install On: (Right Click > Add > Targets > Select Target)
Choose: The Check Point Gateway that will terminate the VPN
4.
Test the VPN
Check Point Log (example of successful PH1)
Check Point Log (example of successful PH2)
Check Point Log (HTTP session successfully traversed tunnel)