TheGreenBow IPSec VPN Client
Configuration Guide
Billion BiGuard 10
WebSite:
http://www.thegreenbow.com
Contact:
support@thegreenbow.com
Configuration Guide written by:
Writer:
TheGreenBow Support Team
Company:
www.thegreenbow.com
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
1/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
Table of contents
1 Introduction .................................................................................................................................................... 3 1.1 Goal of this document ............................................................................................................................ 3 1.2 VPN Network topology ........................................................................................................................... 3 1.3 Billion BiGuard 10 Restrictions............................................................................................................... 3 1.4 Billion BiGuard 10 VPN Gateway ........................................................................................................... 3 1.5 Billion BiGuard 10 VPN Gateway product info ....................................................................................... 4 2 Billion BiGuard 10 VPN configuration ............................................................................................................ 5 3 TheGreenBow IPSec VPN Client configuration ............................................................................................. 8 3.1 VPN Client Phase 1 (IKE) Configuration ................................................................................................ 8 3.2 VPN Client Phase 2 (IPSec) Configuration .......................................................................................... 10 3.3 Open IPSec VPN tunnels ..................................................................................................................... 11 4 Tools in case of trouble ................................................................................................................................ 12 4.1 A good network analyser: Wireshark ................................................................................................... 12 5 VPN IPSec Troubleshooting ........................................................................................................................ 13 5.1 « PAYLOAD MALFORMED » error (wrong Phase 1 [SA]) ................................................................. 13 5.2 « INVALID COOKIE » error.................................................................................................................. 13 5.3 « no keystate » error ............................................................................................................................ 13 5.4 « received remote ID other than expected » error................................................................................ 13 5.5 « NO PROPOSAL CHOSEN » error .................................................................................................... 14 5.6 « INVALID ID INFORMATION » error .................................................................................................. 14 5.7 I clicked on “Open tunnel”, but nothing happens. ................................................................................. 14 5.8 The VPN tunnel is up but I can’t ping ! ................................................................................................. 14 6 Contacts ....................................................................................................................................................... 16 IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
2/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
1 Introduction
1.1 Goal of this document
This configuration guide describes how to configure TheGreenBow IPSec VPN Client with a Billionn BiGuard 10
VPN router.
1.2 VPN Network topology
In our VPN network example (diagram hereafter), we will connect TheGreenBow IPSec VPN Client to the LAN
behind the Billion BiGuard 10 router. The VPN client is connected to the Internet with a DSL connection or
through a LAN. All the addresses in this document are given for example purpose.
IPSec VPN Client
(Remote)
172.16.10.3
mygateway.dyndns.org 172.16.10.1
Internet
BiGuard 10
172.16.10.78
IPSec VPN Client
(as seen on the LAN)
1.3 Billion BiGuard 10 Restrictions
No known restrictions.
1.4 Billion BiGuard 10 VPN Gateway
Our tests and VPN configuration have been conducted with Billion BiGuard 10 firmware release 2.03.
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
3/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
1.5 Billion BiGuard 10 VPN Gateway product info
It is critical that users find all necessary information about Billion BiGuard 10 VPN Gateway. All product info, User
Guide and knowledge base for the Billion BiGuard 10 VPN Gateway can be found on the Billion website:
http://www.billion.com/.
http://www.billion.com/product/biguard/biguard10.php
Billion BiGuard 10 Product page
http://www.billion.com/_Internet/datasheet/BiGuard10.pdf
Billion BiGuard 10 User Guide
Billion BiGuard 10 FAQ/Knowledge Base
IPSec VPN Router Configuration
http://www.billion.com/_Internet/usermanual/BiGuard210_Users%20
Manual_V300_FW103.pdf
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
4/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
2 Billion BiGuard 10 VPN configuration
This section describes how to build an IPSec VPN configuration with your Billion BiGuard 10 VPN router.
Once connected to your Billion BiGuard 10 VPN gateway, you must select “Configuration”, “VPN”, “IPSec” and
“IPSec Policy” tabs.
In this part, you click on “Create” in order to make a new IPSec Policy.
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
5/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
It will bring you to that page in which you will fill in all parameters:
The network to reach by VPN Client / LAN address of Billion VPN Client IP Address The local ID (172.16.10.254) in this router corresponds to the Remote ID in the VPN Client whereas the remote
ID (10.10.10.1) to the LocalID in Phase 1 Advanced in VPN Client software.
The local network corresponds to Remote LAN Address and for the remote network (10.10.10.1); it is for the VPN
Client Address.
Then we selected the Aggressive Mode with an ESP method (using AES128 and SHA1), a Preshared Key
(0123456789), and activated the PFS (Modp 1024).
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
6/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
After having configured all these parameters of the Billion BiGuard router, you click on Apply! You will see the
below page:
Click “Save Config to Flash” and “Apply”.
Now you’ve completed the configuration of the Billion BiGuard 10 VPN router for TheGreenBow VPN Client
software.
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
7/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
3 TheGreenBow IPSec VPN Client configuration
This section describes the required configuration to connect to a Billion BiGuard 10 VPN router.
To download the latest release of TheGreenBow IPSec VPN Client software, please go to
http://www.thegreenbow.com/vpn_down.html.
3.1 VPN Client Phase 1 (IKE) Configuration
The remote VPN Gateway IP address is either an explicit IP address, or a DNS Name. (WAN address of Router) 0123456789
Phase 1 configuration
So, here you find the same parameters as in the router Billion BiGuard (see page 5).
The ‘Remote Gateway’ shall match the ‘WAN address’ of the Billion BiGuard 10 VPN router.
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
8/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
Then click on ‘P1 Advanced’.
In this Phase 1 Advanced, select “Aggressive Mode” as we do in the Billion BiGuard router.
The “Local ID” in the VPN Client shall match the “Remote ID” and the “Remote ID”, the “Local ID” in the Billion
BiGuard 10 VPN router.
Click on “Ok”.
Now you’ve completed configuration of the VPN Client Phase 1 software.
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
9/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
3.2 VPN Client Phase 2 (IPSec) Configuration
VPN Client IP Address. Configured in Billion router. (Page 6) Remote LAN to reach by VPN Client Phase 2 Configuration
The part ESP shall match the Phase2 group in the Billion BiGuard 10 (in the part “Proposal”, Encryption Protocol
Authentication Protocol and PFS) VPN router.
Click on “Save & Apply”.
And you have finished the configuration of the TheGreenBow VPN Client software.
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
10/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
3.3 Open IPSec VPN tunnels
Once both Billion BiGuard 10 router and TheGreenBow IPSec VPN Client software have been configured
accordingly, you are ready to open VPN tunnels. First make sure you enable your firewall with IPSec traffic.
1. Click on "Save & Apply" to take into account all modifications we've made on your VPN Client configuration
2. Click on "Open Tunnel", or generate traffic that will automatically open a secure IPSec VPN Tunnel (e.g. ping,
IE browser)
3. Select "Connections" to see opened VPN Tunnels
4. Select "Console" if you want to access to the IPSec VPN logs and adjust filters to display less IPSec
messaging. The following example shows a successful connection between TheGreenBow IPSec VPN Client and
a Billion BiGuard 10 VPN router.
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
11/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
4 Tools in case of trouble
Configuring an IPSec VPN tunnel can be a hard task. One missing parameter can prevent a VPN connection
from being established. Some tools are available to find source of troubles during a VPN establishment.
4.1 A good network analyser: Wireshark
Wireshark is a free software that can be used for packet and traffic analysis. It shows IP or TCP packets received
on a network card. This tool is available on website http://www.wireshark.org. It can be used to follow protocol
exchange between two devices. For installation and use details, read its specific documentation
(http://www.wireshark.org/docs/).
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
12/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
5 VPN IPSec Troubleshooting
5.1 « PAYLOAD MALFORMED » error (wrong Phase 1 [SA])
114920 Default (SA Gateway1-P1) SEND phase 1 Main Mode [SA][VID]
114920 Default (SA Gateway1-P1) RECV phase 1 Main Mode [NOTIFY]
114920 Default exchange_run: exchange_validate failed
114920 Default dropped message from 195.100.205.114 port 500 due to notification
type PAYLOAD_MALFORMED
114920 Default SEND Informational [NOTIFY] with PAYLOAD_MALFORMED error
If you have an « PAYLOAD MALFORMED » error you might have a wrong Phase 1 [SA], check if the encryption
algorithms are the same on each side of the VPN tunnel.
5.2 « INVALID COOKIE » error
115933 Default message_recv: invalid cookie(s) 5918ca0c2634288f 7364e3e486e49105
115933 Default dropped message from 195.100.205.114 port 500 due to notification
type INVALID_COOKIE
115933 Default SEND Informational [NOTIFY] with INVALID_COOKIE error
If you have an « INVALID COOKIE » error, it means that one of the endpoint is using a SA that is no more in use.
Reset the VPN connection on each side.
5.3 « no keystate » error
115315
115317
115317
115319
115319
115319
Default
Default
Default
Default
Default
Default
(SA Gateway1-P1) SEND phase 1 Main
(SA Gateway1-P1) RECV phase 1 Main
(SA Gateway1-P1) SEND phase 1 Main
(SA Gateway1-P1) RECV phase 1 Main
(SA Gateway1-P1) SEND phase 1 Main
ipsec_get_keystate: no keystate in
Mode [SA][VID]
Mode [SA][VID]
Mode [KEY][NONCE]
Mode [KEY][NONCE]
Mode [ID][HASH][NOTIFY]
ISAKMP SA 00B57C50
Check if the preshared key is correct or if the local ID is correct (see « Advanced » button). You should have
more information in the remote endpoint logs.
5.4 « received remote ID other than expected » error
120348 Default (SA Gateway1-P1) SEND phase 1 Main
120349 Default (SA Gateway1-P1) RECV phase 1 Main
120349 Default (SA Gateway1-P1) SEND phase 1 Main
120351 Default (SA Gateway1-P1) RECV phase 1 Main
120351 Default (SA Gateway1-P1) SEND phase 1 Main
120351 Default (SA Gateway1-P1) RECV phase 1 Main
120351 Default ike_phase_1_recv_ID: received
support@thegreenbow.fr
Mode [SA][VID]
Mode [SA][VID]
Mode [KEY][NONCE]
Mode [KEY][NONCE]
Mode [ID][HASH][NOTIFY]
Mode [ID][HASH][NOTIFY]
remote ID other than
expected
The « Remote ID » value (see « Advanced » Button) does not match what the remote endpoint is expected.
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
13/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
5.5 « NO PROPOSAL CHOSEN » error
115911 Default (SA Gateway1-P1) SEND phase 1 Main Mode [SA][VID]
115913 Default (SA Gateway1-P1) RECV phase 1 Main Mode [SA][VID]
115913 Default (SA Gateway1-P1) SEND phase 1 Main Mode [KEY][NONCE]
115915 Default (SA Gateway1-P1) RECV phase 1 Main Mode [KEY][NONCE]
115915 Default (SA Gateway1-P1) SEND phase 1 Main Mode [ID][HASH][NOTIFY]
115915 Default (SA Gateway1-P1) RECV phase 1 Main Mode [ID][HASH][NOTIFY]
115915 Default phase 1 done: initiator id c364cd70: 195.100.205.112, responder id
c364cd72: 195.100.205.114, src: 195.100.205.112 dst: 195.100.205.114
115915
Default
(SA
Gateway1-Tunnel1-P2)
SEND
phase
2
Quick
Mode
[SA][KEY][ID][HASH][NONCE]
115915 Default RECV Informational [HASH][NOTIFY] with NO_PROPOSAL_CHOSEN error
115915 Default RECV Informational [HASH][DEL]
115915 Default Gateway1-P1 deleted
If you have an « NO PROPOSAL CHOSEN » error, check that the « Phase 2 » encryption algorithms are the
same on each side of the VPN Tunnel.
Check « Phase 1 » algorithms if you have this:
115911 Default (SA Gateway1-P1) SEND phase 1 Main Mode [SA][VID]
115911 Default RECV Informational [NOTIFY] with NO_PROPOSAL_CHOSEN error
5.6 « INVALID ID INFORMATION » error
122623 Default (SA Gateway1-P1) SEND phase 1 Main Mode [SA][VID]
122625 Default (SA Gateway1-P1) RECV phase 1 Main Mode [SA][VID]
122625 Default (SA Gateway1-P1) SEND phase 1 Main Mode [KEY][NONCE]
122626 Default (SA Gateway1-P1) RECV phase 1 Main Mode [KEY][NONCE]
122626 Default (SA Gateway1-P1) SEND phase 1 Main Mode [ID][HASH][NOTIFY]
122626 Default (SA Gateway1-P1) RECV phase 1 Main Mode [ID][HASH][NOTIFY]
122626 Default phase 1 done: initiator id c364cd70: 195.100.205.112, responder id
c364cd72: 195.100.205.114, src: 195.100.205.112 dst: 195.100.205.114
122626
Default
(SA
Gateway1-Tunnel1-P2)
SEND
phase
2
Quick
Mode
[SA][KEY][ID][HASH][NONCE]
122626 Default RECV Informational [HASH][NOTIFY] with INVALID_ID_INFORMATION error
122626 Default RECV Informational [HASH][DEL]
122626 Default Gateway1-P1 deleted
If you have an « INVALID ID INFORMATION » error, check if « Phase 2 » ID (local address and network
address) is correct and match what is expected by the remote endpoint.
Check also ID type (“Subnet address” and “Single address”). If network mask is not check, you are using a
IPV4_ADDR type (and not a IPV4_SUBNET type).
5.7 I clicked on “Open tunnel”, but nothing happens.
Read logs of each VPN tunnel endpoint. IKE requests can be dropped by firewalls. An IPSec Client uses UDP
port 500 and protocol ESP (protocol 50).
5.8 The VPN tunnel is up but I can’t ping !
If the VPN tunnel is up, but you still cannot ping the remote LAN, here are a few guidelines:
• Check Phase 2 settings: VPN Client address and Remote LAN address. Usually, VPN Client IP address
should not belong to the remote LAN subnet
• Once VPN tunnel is up, packets are sent with ESP protocol. This protocol can be blocked by firewall.
Check that every device between the client and the VPN server does accept ESP
• Check your VPN server logs. Packets can be dropped by one of its firewall rules.
• Check your ISP support ESP
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
14/16
Doc.Ref
Doc.version
VPN version
•
•
•
•
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
If you still cannot ping, follow ICMP traffic on VPN server LAN interface and on LAN computer interface
(with Wireshark for example). You will have an indication that encryption works.
Check the “default gateway” value in VPN Server LAN. A target on your remote LAN can receive pings
but does not answer because there is a no “Default gateway” setting.
You cannot access to the computers in the LAN by their name. You must specify their IP address inside
the LAN.
We recommend you to install Wireshark (http://www.wireshark.org) on one of your target computer. You
can check that your pings arrive inside the LAN.
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
15/16
Doc.Ref
Doc.version
VPN version
tgbvpn_ug-billion-biguard-10_en
3.0 – Nov 2008
4.x
6 Contacts
News and updates on TheGreenBow web site: http://www.thegreenbow.com
Technical support by email at support@thegreenbow.com
Sales contacts by email at sales@thegreenbow.com
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - © Sistech 2001-2008
16/16