TheGreenBow IPsec VPN Client
Configuration Guide
Cisco RV220W
Written by: Anonymous Customer
Website: www.thegreenbow.com
Contact: support@thegreenbow.com
Property of TheGreenBow – Sistech S.A. © 2014
Configuration Guide
Table of Contents
1
2
3
4
5
6
Introduction ............................................................................................................................................ 3
1.1 Goal of this document.................................................................................................................... 3
1.2 VPN Network topology .................................................................................................................. 3
1.3 Cisco RV220W Restrictions ............................................................................................................ 3
1.4 Cisco RV220W VPN Gateway ......................................................................................................... 3
1.5 Cisco RV220W VPN Gateway product info .................................................................................... 3
Cisco RV220W VPN configuration .......................................................................................................... 4
2.1 Configure VPN using Wizard .......................................................................................................... 4
2.2 Add IKE Policy ................................................................................................................................. 4
2.3 Extended Authentication / X-Auth ................................................................................................. 5
2.4 Add VPN Policy ............................................................................................................................... 6
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 ............................................................................................................... 10
Tools in case of trouble......................................................................................................................... 11
4.1 A good network analyser: Wireshark........................................................................................... 11
VPN IPsec Troubleshooting................................................................................................................... 12
5.1 “PAYLOAD MALFORMED” error (wrong Phase 1 [SA]) ................................................................ 12
5.2 “INVALID COOKIE” error .............................................................................................................. 12
5.3 “no keystate” error ...................................................................................................................... 12
5.4 “received remote ID other than expected” error ........................................................................ 12
5.5 “NO PROPOSAL CHOSEN” error ................................................................................................... 13
5.6 “INVALID ID INFORMATION” error .............................................................................................. 13
5.7 I clicked on “Open tunnel”, but nothing happens. ...................................................................... 13
5.8 The VPN tunnel is up but I can’t ping ! ........................................................................................ 14
Contacts ................................................................................................................................................ 15
IPsec VPN Router Configuration
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Configuration Guide
1 Introduction
1.1 Goal of this document
This configuration guide describes how to configure TheGreenBow IPsec VPN Client software with a Cisco
RV220W VPN router to establish VPN connections for remote access to corporate network.
1.2 VPN Network topology
In our VPN network example (diagram hereafter), we will connect TheGreenBow IPsec VPN Client software to
the LAN behind the Cisco RV220W 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
as seen on LAN
mygateway.dyndns.org
192.168.1.1
192.168.1.78
IPsec VPN Client
(Remote)
Internet
Cisco RV220W
192.168.0.3
1.3 Cisco RV220W Restrictions
No known restrictions.
1.4 Cisco RV220W VPN Gateway
Our tests and VPN configuration have been conducted with Cisco RV220W firmware releases 1.0.2.4 &
1.0.4.17.
1.5 Cisco RV220W VPN Gateway product info
It is critical that users find all necessary information about Cisco RV220W VPN Gateway. All product info, User
Guide and knowledge base for the Cisco RV220W VPN Gateway can be found on the Cisco website:
http://www.cisco.com/c/en/us/products/routers/rv220w-wireless-network-security-firewall/index.html
Cisco RV220W Product page
Cisco RV220W User Guide
IPsec VPN Router Configuration
http://www.cisco.com/c/dam/en/us/products/collateral/routers/r
v220w-wireless-network-security-firewall/brochure_c02637535.pdf
http://www.cisco.com/c/dam/en/us/td/docs/routers/csbr/rv220w
/administration/guide/rv220w_admin_v1-0-1-0.pdf
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Configuration Guide
2 Cisco RV220W VPN configuration
This section describes how to build an IPsec VPN configuration with your Cisco RV220W VPN router.
Once connected to your Cisco RV220W VPN gateway, follow the steps below.
2.1 Configure VPN using Wizard
Navigate to the menu > VPN > Advanced VPN Setup > IKE Policy Table > Add
Add IKE Policy
Chapter 2.2
Add VPN Policy
Chapter 2.4
2.2 Add IKE Policy
Below screenshot shows the typical settings to be used for IPSec VPN
Take note of the values set here as they would be required when configuring the TheGreenBow VPN Client.
The important values include:
Pre-Shared Key: This can be any text string, preferably complex for security
Remote WAN IP address/FQDN: This can be remote.com or any other arbitrary value e.g. tywoddse1.com but
the corresponding value used in TheGreenBow VPN Client must be the same. It does not have to be a real
address i.e. resolve to a real IP address.
Local WAN IP address/FQDN: This can be local.com or any arbitrary value e.g. yywox99.com. The value does
not matter, but the same value must be entered in the corresponding field in the TheGreenBow VPN Client. It
does not have to be a real address i.e. resolve to a real IP address.
Local LAN IP address and subnet: This must match the LAN subnet of the Cisco RV220W router.
Click the "Save" button after entering the required information
IPsec VPN Router Configuration
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Configuration Guide
2.3 Extended Authentication / X-Auth
Note the last set of fields in this policy:
Extended Authentication:
To use the internal user database of the Cisco Rv220w firewall set
XAUTH Type to "Edge device" and Authentication type to "User Database".
IPsec VPN Router Configuration
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Configuration Guide
2.4 Add VPN Policy
Navigate to the menu > VPN > Advanced VPN Setup > VPN Policy Table > Add
"Select IKE Policy" links this policy to the "TGB" IKE policy.
IPsec VPN Router Configuration
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You will need to create VPN users.
To create users, navigate go to: VPN > VPN Users
Click on Add, and then enter the username and password, and select the XAUTH protocol (for IPSec).
Take note of the username and password. This will be required when using TGB to connect
IPsec VPN Router Configuration
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Configuration Guide
3 TheGreenBow IPsec VPN Client configuration
This section describes the required configuration to connect to a Cisco RV220W VPN router via VPN
connections.
To download the latest release of TheGreenBow IPsec VPN Client software, please go to
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
AnyRandomString
Phase 1 configuration
This configuration is one example of what can be accomplished in term of User Authentication. You may want
to refer to either the Cisco RV220W router user guide or TheGreenBow IPsec VPN Client software User Guide
for more details on User Authentication options.
IPsec VPN Router Configuration
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Configuration Guide
Phase 1 advanced configuration
Enable X-Auth Popup or enter X-Auth Login and Password.
Note : If X-Auth Popup is enabled, user will be requested to enter Login and Password every time the tunnel
opens.
IPsec VPN Router Configuration
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Configuration Guide
3.2 VPN Client Phase 2 (IPsec) Configuration
Enter the IP address
(and subnet mask)
of the remote LAN.
Phase 2 Configuration
3.3 Open IPsec VPN tunnels
Once both Cisco RV220W 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 Cisco RV220W VPN router.
IPsec VPN Router Configuration
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Configuration Guide
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 www.wireshark.org. It can be used to follow
protocol exchange between two devices. For installation and use details, read its specific documentation
(www.wireshark.org/docs/).
IPsec VPN Router Configuration
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Configuration Guide
5 VPN IPsec Troubleshooting
5.1 “PAYLOAD MALFORMED” error (wrong Phase 1 [SA])
114920 Default (SA CNXVPN1-P1) SEND phase 1 Main Mode [SA][VID]
114920 Default (SA CNXVPN1-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 CNXVPN1-P1) SEND phase 1 Main Mode [SA][VID]
(SA CNXVPN1-P1) RECV phase 1 Main Mode [SA][VID]
(SA CNXVPN1-P1) SEND phase 1 Main Mode [KEY][NONCE]
(SA CNXVPN1-P1) RECV phase 1 Main Mode [KEY][NONCE]
(SA CNXVPN1-P1) SEND phase 1 Main Mode [ID][HASH][NOTIFY]
IPsec_get_keystate: no keystate in 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 CNXVPN1-P1) SEND
120349 Default (SA CNXVPN1-P1) RECV
120349 Default (SA CNXVPN1-P1) SEND
120351 Default (SA CNXVPN1-P1) RECV
120351 Default (SA CNXVPN1-P1) SEND
120351 Default (SA CNXVPN1-P1) RECV
120351 Default ike_phase_1_recv_ID:
support@thegreenbow.fr
phase 1 Main Mode
phase 1 Main Mode
phase 1 Main Mode
phase 1 Main Mode
phase 1 Main Mode
phase 1 Main Mode
received remote ID
[SA][VID]
[SA][VID]
[KEY][NONCE]
[KEY][NONCE]
[ID][HASH][NOTIFY]
[ID][HASH][NOTIFY]
other than expected
The “Remote ID” value (see “Advanced” Button) does not match what the remote endpoint is expected.
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5.5 “NO PROPOSAL CHOSEN” error
115911 Default (SA CNXVPN1-P1) SEND phase 1 Main Mode [SA][VID]
115913 Default (SA CNXVPN1-P1) RECV phase 1 Main Mode [SA][VID]
115913 Default (SA CNXVPN1-P1) SEND phase 1 Main Mode [KEY][NONCE]
115915 Default (SA CNXVPN1-P1) RECV phase 1 Main Mode [KEY][NONCE]
115915 Default (SA CNXVPN1-P1) SEND phase 1 Main Mode [ID][HASH][NOTIFY]
115915 Default (SA CNXVPN1-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 CNXVPN1-CNXVPN1-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 CNXVPN1-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 CNXVPN1-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 CNXVPN1-P1) SEND phase 1 Main Mode [SA][VID]
122625 Default (SA CNXVPN1-P1) RECV phase 1 Main Mode [SA][VID]
122625 Default (SA CNXVPN1-P1) SEND phase 1 Main Mode [KEY][NONCE]
122626 Default (SA CNXVPN1-P1) RECV phase 1 Main Mode [KEY][NONCE]
122626 Default (SA CNXVPN1-P1) SEND phase 1 Main Mode [ID][HASH][NOTIFY]
122626 Default (SA CNXVPN1-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 CNXVPN1-CNXVPN1-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 CNXVPN1-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).
IPsec VPN Router Configuration
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Configuration Guide
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
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 (www.wireshark.org) on one of your target computer. You can
check that your pings arrive inside the LAN.
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Configuration Guide
6 Contacts
News and updates on TheGreenBow web site: www.thegreenbow.com
Technical support by email at: support@thegreenbow.com
Sales contacts by email at: sales@thegreenbow.com
IPsec VPN Router Configuration
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