TheGreenBow IPSec VPN Client Configuration Guide

Zyxel ZyWALL USG 1000

WebSite: Contact: http://www.thegreenbow.com support@thegreenbow.com
Configuration Guide written by: Writer: Company: TheGreenBow TechSupport Team www.thegreenbow.com
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - Sistech 2001-2009
Doc.Ref Doc.version VPN version
tgbvpn_cg-zywall-usg-1000-en 4.0 Jun 2009 4.6

Table of contents

1 Introduction..... 3 1.1 Goal of this document.... 3 1.2 VPN Network topology..... 3 1.3 Zyxel ZyWALL USG 1000 Restrictions... 3 1.4 Zyxel ZyWALL USG 1000 VPN Gateway.... 3 1.5 Zyxel ZyWALL USG 1000 VPN Gateway product info... 3 Zyxel ZyWALL USG 1000 VPN configuration... 5 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..... 12 4.1 A good network analyser: Wireshark.... 12 VPN IPSec Troubleshooting.... 13 5.1 PAYLOAD MALFORMED error (wrong Phase 1 [SA])... 13 5.2 INVALID COOKIE error.... 13 no keystate error.... 13 5.3 5.4 received remote ID other than expected error... 13 5.5 NO PROPOSAL CHOSEN error.... 14 5.6 INVALID ID INFORMATION error... 14 I clicked on Open tunnel, but nothing happens... 14 5.7 5.8 The VPN tunnel is up but I cant ping !.... 14 Contacts..... 16

1 Introduction

1.1 Goal of this document
This configuration guide describes how to configure TheGreenBow IPSec VPN Client software with a Zyxel ZyWALL USG 1000 VPN router to allow remote users to open VPN connections to their 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 Zyxel ZyWALL USG 1000 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)
192.168.1.3 mygateway.dyndns.org 192.168.1.1 ZyWALL USG1000

Internet

192.168.1.78 IPSec VPN Client (as seen on the LAN)
1.3 Zyxel ZyWALL USG 1000 Restrictions

No known restrictions.

1.4 Zyxel ZyWALL USG 1000 VPN Gateway
Our tests and VPN configuration have been conducted with Zyxel ZyWALL USG 1000 firmware release 2.00(AQV.0)b1.
1.5 Zyxel ZyWALL USG 1000 VPN Gateway product info
It is critical that users find all necessary information about Zyxel ZyWALL USG 1000 VPN Gateway. All product info, User Guide and knowledge base for the Zyxel ZyWALL USG 1000 VPN Gateway can be found on the Zyxel ZyWALL USG 1000 website: http://www.zyxel.com/web/product_family_detail.php?PC1indexflag=20040908175941&display=72723&Category GroupNo=F767D27C-26A1-41A2-966C-72688E1628B3
Zyxel ZyWALL USG 1000 http://www.zyxel.com/web/product_family_detail.php?PC1indexflag=200409081759 Product page 41&display=72723&CategoryGroupNo=F767D27C-26A1-41A2-966C72688E1628B3 Zyxel ZyWALL USG 1000 http://www.zyxel.com/web/support_download_detail.php?file=20070704094750200 User Guide 7070409340820040811211941_20090327_2.11-ZW-USG1000_UG_V211_Ed1_2008-11-27_edit.pdf&model=ZyWALL USG 1000# Zyxel ZyWALL USG 1000 http://www.zyxel.com/web/support_knowledgebase_list.php?pid=20040908175941 FAQ/Knowledge Base &linkkb=0,20070704093408
2 Zyxel ZyWALL USG 1000 VPN configuration
This section describes how to build an IPSec VPN configuration with your Zyxel ZyWALL USG 1000 VPN router. Once connected to your Zyxel ZyWALL USG 1000 VPN gateway, you must select VPN then IPSec VPN and VPN Gateway tabs.

AddVPN Gateway

Click Add VPN in order to add a new IPSec VPN Gateway (Phase 1) for VPN Client. Click on OK to save, after configured required parameters.

WANInterface

Navigate to Object > Address > Address, and click Add in order to create a new IPSec VPN Host (VPN Client Virtual IP address) for the remote VPN client.
Click on OK to save. Object Address summary:
Navigate to VPN > IPSec VPN > VPN Connection, and click Add in order to create a new IPSec VPN Connection (Phase 2) for the remote VPN client.

AddVPN Connection

Click on OK to save, after configured required parameters.
SubnettoreachfromVPN Client
VPNClientVirtualIPaddress

VPN Connection summary:

This complete the configuration of the Zyxel ZyWALL USG 1000 VPN router for remote connections.

3 TheGreenBow IPSec VPN Client software configuration
This section describes the required configuration to connect to a Zyxel ZyWALL USG 1000 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
WANIP/DNS addressof ZyWALLUSG1000

0123456789

Phase 1 configuration
You may use either Pre-shared Key, Certificates, USB Tokens or X-Auth combined with RADIUS Server for User Authentication with the Zyxel ZyWALL USG 1000 router. This configuration is one example of can be accomplished in term of User Authentication. You may want to refer to either the Zyxel ZyWALL USG 1000 router user guide or TheGreenBow IPSec VPN Client User Guide for more details on User Authentication options.
Click on P1 Advanced. and configure Local ID and Remote ID.
3.2 VPN Client Phase 2 (IPSec) Configuration
VPNClient VirtualIPaddress
RemoteSubnetto reachfromVPN Clientcomputer

Phase 2 Configuration

3.3 Open IPSec VPN tunnels
Once both Zyxel ZyWALL USG 1000 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 software and a Zyxel ZyWALL USG 1000 VPN router.
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/).
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 7364e3e486eDefault 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

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.

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.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.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 cant 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 2001-2009 14/16
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.

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

ZyWALL

Quick Info. Guide
ZyWALL USG Series Feature Matrix

Infrastructure Security

ZyWALL USG 2000 ZyWALL USG 1000 ZyWALL USG 300 ZyWALL USG 200 ZyWALL USG 100

Graphic

System Firewall Throughput VPN Throughput (AES) UTM Throughput (AV+IDP+Firewall) Unlimited User Licenses Sessions Max. Concurrent IPSec VPN Tunnels Max. Concurrent SSL VPN Users Physical Port Customizable Zone Networking Routing/NAT/SUA Mode Bridge Mode Mix Mode (Routing+Bridge) VLAN Tagging (802.1q) Wireless Card Support 3G Support Security Firewall IPsec VPN SSL VPN Content Filtering Anti-SPAM Anti-Virus IDS/IDP IM/P2P Management Bandwidth Management User-aware Management High Availability Device HA VPN HA Multiple WANs for Load Balancing Auto Fail-over, Fail-back Dial Backup Redundant Power Module Authentication Method Local Database Radius LDAP Microsoft AD ZyWALL OTP Management WebGUI (HTTP and HTTPS) Command Line Vantage CNM Vantage Report
Note: *1: With SEM-DUAL/SEM-VPN module

*3 *3 *3

2,000 Mbps 500 Mbps*Mbps*2
350 Mbps 150 Mbps 100 Mbps
200 Mbps 100 Mbps 48 Mbps

150 Mbps 75 Mbps 24 Mbps

100 Mbps 50 Mbps 24 Mbps
1,000,000 2,(6) 10/100/1000 GbE (2) Dual-Personality GbE (SFP/RJ45)

500,000 1,(250*3)

60,10 (25*3)
40,x LAN/DMZ, 2 x WAN, 1 x OPT (All GbE)
20,x LAN/DMZ, 2 x WAN (All GbE)

(5) 10/100/1000 GbE

(7) 10/100/1000 GbE
*2: With SEM-DUAL/SEM-UTM module
*3: Available In future firmware release

ZyWALL Feature Matrix

Home Office/SOHO

ZyWALL 2 Plus ZyWALL 2WG

ZyWALL SSL 10
System Firewall Throughput VPN Throughput (AES) UTM Throughput (AV+IDP+Firewall) Unlimited User Licenses Sessions Max. Concurrent IPSec VPN tunnels Max. Concurrent SSL VPN users Wireless Physical Port Customizable Zone WAN Type Ethernet 3G (Optional) Networking Routing/NAT/SUA Mode Bridge Mode Mix Mode (Routing+Bridge) VLAN Tagging (802.1q) Security Firewall IPsec VPN SSL VPN Content Filtering Anti-SPAM Anti-Virus IDS/IDP IM/P2P Bandwidth Management User-aware Management High Availability Device HA VPN HA Multiple WANs for Load Balancing Auto Fail-over, Fail-back Dial Backup Authentication Method Local database Radius LDAP Microsoft AD ZyWALL OTP Management WebGUI (HTTP and HTTPS) Command Line Vantage CNM Vantage Report
Note: *1: Available In future firmware release

24 Mbps 24 Mbps

24 Mbps

3,000 5

4 x LAN, 1 x WAN

4 x LAN/DMZ, 1 x WAN
Maintain Control: Unified Security Gateway helps you win the battle
Challenges that may Drain Your IT Resource
1. Secure Connectivity With the nature, scale and risks associated with significant deployments of new networking technologies, organizations must evaluate solutions to build up a safer infrastructure to secure online transactions. Infrastructure should be tailored to meet operation requirements for expanding remote sites as well as mobile teleworkers.
2. Proactive Protection Malicious virus, worm, exploits could cripple corporate networks and halt business transactions. In addition to severe financial loss, you also risk leakage of confidential information. Your network is bombarded with massive amounts of junk mail (spam). Without intelligent detection and proactive blocking, users have to go through the tedious and time-consuming task of filtering through their email, reducing productivity.
3. Policy Compliance With numerous file-sharing peer-to-peer (P2P) and Instant Messaging (IM) applications, it is easy for company employees to share files and chat online during work hours. File sharing not only compromises network safety with the sharing of questionable files, but may also violate copyright laws and create legal hassles.
4. Network Resilience Broken ISP links, hardware and software failure on the gateway, dead VPN tunnels - these are severe challenges IT staff face when designing the network infrastructure. We need to take fault tolerance of the network path into consideration when designing a network infrastructure for nonstop operations.
ZyWALL USG Series Advantages
The ZyWALL USG series is a high performance, deep packet inspection security solution for small business to enterprise. It embodies a Stateful Packet Inspection (SPI) firewall, Anti-Virus, Intrusion Detection and Prevention (IDP), Content Filtering, Anti-Spam, and VPN (IPSec/SSL/L2TP) in one box. This multilayered security safeguards your organizations customer and company records, intellectual property, and critical resources from external and internal threats.
1. Leading, High Performance UTM Solution
ZyWALL USG series deploys hardware-acceleration technology in one box. Powered by high-performance SecuASIC technology and a hardware-based encryption accelerator, the ZyWALL USG series delivers leading high performance and multi-layer threat protection for small business to enterprises. All ZyWALL USG series support Gigabit Ethernet interfaces.

2. Robust Hybrid VPN (IPSec and SSL)
The ZyWALL USG series can provide secure access from remote locations to corporate resources through the Internet for organizations of any size. Using IPSec VPN companies can secure connections to branch offices, partners, and headquarters. Road warriors and telecommuters can use SSL or L2TP VPN to securely access the company network without having to install VPN software.

3. Managing IM/P2P Abuse

For increasing network efficiency and business productivity, the IM/P2P application needs to be well managed. The ZyWALL USG series support Application Patrol which controls who can use IM and P2P applications like MSN and BitTorrent, and even who can use specific features within an application.
4. Non-Stop Internet Access with Multiple WAN and 3G as backup
The ZyWALL USG not only supports multiple WAN ports but also supports USB 3G or PCMCIA 3G card. This enables it to provide active-active load sharing or active-passive failover configuration to deliver highly reliable network connectivity. To minimize the impact of single-point failures, the ZyWALL USG series support device HA (High Availability) to assure network availability.
5. ICSA Firewall, IPSec, Antivirus Certification
With ICSA certified SPI Firewall, Anti-Virus and IPSec VPN, the ZyWALL USG series enables organizations to take complete control of their network infrastructure and provide the most up-to-date protection against the network threats.
6. Comprehensive Report System
ZyWALL USG series build-in report system which offers a comprehensive set of real-time and historical reports, including firewall, virus and intrusion attacks, bandwidth usage, web site usage, and user activity. Furthermore, with the web-based reporting system, Vantage Report (VRPT), administrators can easily collect traffic data and analyze a distributed network, so organizations are aware of suspicious activity and to ensure increase business productivity.
ZyXEL North America Tel: 800.255.4101
For more product information, visit us on the web at www.us.ZyXEL.com

0808v100qig-Security

Copyright 2008 ZyXEL Communications Corp. All rights reserved. ZyXEL, ZyXEL logo are registered trademarks of ZyXEL Communications Corp. All other brands, product names, or trademarks mentioned are the property of their respective owners. All specifications are subject to change without notice.