ZyWALL 10W

Internet Security Gateway with Wireless Ready
The ZyWALL 10W offers superior Firewall/VPN protection, while simultaneously offering the flexibility and freedom of wireless access! Designed for all Small Office and Home Office (SOHO) applications, the ZyWALL 10W wireless security gateway delivers a high level of security and performance as well as reliability and convenience. The ZyWALL 10W protects networks from intruders by providing robust Firewall features and standard-IPSec VPN tunneling. Not only can the ZyWALL 10W users take advantage of the security features, but can also eliminate the physical restrictions of cabled connections. Additional value-added services are planned for introduction in the near future. Benefits will include bandwidth allocation and dial backup, as well as traffic redirection, that will maximize performance and efficiency and minimize operation and maintenance costs. Security management is further simplified with the ZyWALL 10Ws intuitive Web management interface and administration wizards. With its comprehensive list of features available in one compact unit, the ZyWALL 10W is the SOHO users best choice in Internet security gateways.

B e n e f i t s

Robust, State-of-The-Art Firewall Security With ICSA Certification, the ZyWALL 10W provides state-of-theart Firewall performance and robust security. Based on Stateful Packet Inspection and Denial of Service (DoS), it provides the first line of defense against hackers, network intruders, and other hazardous threats. VPN (Virtual Private Network) Support The ZyWALL 10W supports ICSA certified IPSec VPN, suitable for site-to-site and remote access deployment. Data encryption over the Internet ensures secure transmission between two sites, and can be used to replace a private leased line or frame relay network, allowing global interconnectivity at a minimal expense. Mobile Network with Optional Wireless LAN The ZyWALL 10W provides an optional wireless LAN solution by adding ZyXELs ZyAIR B-100 wireless LAN PC card. Based on IEEE 802.1x authentication framework and RADIUS accounting records, the ZyWALL 10W offers the convenience of wireless LAN access without sacrificing the security and reliability expected from cabled Firewall/VPN solutions. *Effective Networking Resource Allocation The ZyWALL 10W enables network administrators to allocate network resources while guaranteeing Quality of Service (QoS). Network bandwidth allocation increases productivity and efficiency in daily operations by tailoring a system to specific demands. *Traffic Redirection for Broadband Backup Connection The ZyWALL 10W supports fail-over and fail-back technology by forwarding WAN port traffic to backup ISDN or Analog modems when the WAN port connection fails. When the WAN connection is reestablished, the traffic returns. The ZyWALL 10W can also perform backup functions by connecting ISDN or Analog modems to ensure availability of the Internet. The ZyWALL 10W backup features save the cost of IT consulting, device maintenance, and daily operation losses.

*for future release

F e a t u r e s
Virtual Private Network 10 IPSec Connections Firewall Security Packet Filter Stateful Packet Inspection Denial of Service Attack Alert and logs Access Control Routing Support IP Routing: TCP, UDP, ICMP, ARP, RIP V1 & RIP V2 Programmable Static Route IP Alias
Content Filtering Java/ActiveX/Cookie/Proxy Blocking URL Blocking ISP Authentication RR Manager PPPoE PPTP Network Management Web-based configurator Telnet remote access support TFTP/FTP for firmware upgrade/backup SNMP support
Application DNS proxy Internet Time Calibration Traffic Redirect Dynamic DNS Telnet Client Built-in Diagnostic Tool Call Scheduling Budget Management UPnP Dial Backup* Wireless IEEE 802.11b compliant IPSec Pass Through 64/128-bits WEP Encryption IEEE 802.1x Port-Based Authentication with RADIUS Client
S p e c i f i c a t i o n s
Hardware Specification Frame Ground Power: 12VDC LAN: 10/100Mbps Ethernet Reset Button WAN: 10/100Mbps Ethernet CON/AUX Switch RS-232 DB9F: Console/Dial Back-up Wireless Ready Slot Operating Environment Operating Temperature: 0 ~ 40C Operating Humidity: 5 ~ 90% (non-condensing) Physical Specification Dimensions: 233mm(L) x 155mm(D) x 30mm(H) Weight: 525g

A p p l i c a t i o n

LAN (Trusted Network)

D i a g r a m

INTERNET
URL Blocking Stateful Inspection Denial of Service

Hackers

Server

World Wide Web

Internet Security Appliances for SOHO
Web Server Mail Server Internet Server Data Base

ZyWALL

Branch Office/Remote Office

Headquarters

Virtual Private Network
Notebook running VPN Client Program (ZyXEL/SSH Sentinel)

R e a r

P a n e l
Corporate Headquarters ZyXEL Communications Co. Tel: +886-3-578-3942 Fax: +886-3-578-2439 Email: sales@zyxel.com.tw http://www.zyxel.com http://www.zyxel.com.tw
North America ZyXEL Communications Inc. Tel: +1-714-632-0882 Fax: +1-714-632-0858 Email: sales@zyxel.com http://www.zyxel.com
Germany ZyXEL Deutschland GmbH. Tel: +Fax: +Email: sales@zyxel.de http://www.zyxel.de
Denmark ZyXEL Communications A/S Tel: +00 Fax: +07 Email: sales@zyxel.dk http://www.zyxel.dk
Norway ZyXEL Communications A/S Tel: +80 Fax: +81 Email: sales@zyxel.no http://www.zyxel.no
Sweden ZyXEL Communications A/S Tel: +46 (0) 3810 Fax: +46 (0) 3811 Email: sales@zyxel.se http://www.zyxel.se
Copyright 2002 ZyXEL Communications Corporation. All rights reserved. ZyXEL, the ZyXEL logo, ZyWALL, ZyNOS are registered trademarks of ZyXEL Communications Co. Other trademarks and service names referenced are properties of their respective holders. All specifications are subject to change without notice.

65-100-312006

TheGreenBow IPSec VPN Client Configuration Guide

Router:

WebSite: Contact:

Zyxel ZyWall 10

http://www.thegreenbow.com support@thegreenbow.com
IPSec VPN Router Configuration
Property of TheGreenBow Sistech SA - Sistech 2001-2005
Doc.Ref Doc.version VPN version
tgbvpn_cg_ZyWall10_en 2.0 Nov.2004 2.5x

Table of contents

1 1.1 1.2.1 2.2 2.3 2.4 2.5 2.3.1 3.2 3.Introduction..... 0 Goal of this document.... 0 Network topology.... 0 ZyWall VPN Configuration..... 0 ZyWall VPN Configuration interface.... 0 ZyWall IKE Mode.... 0 ZyWall Phase 2 IDs..... 0 ZyWall Phase 1 IDs..... 0 ZyWall IPSec Protocol.... 0 ZyWall Authentication and encryption algorithms... 0 TheGreenBow IPSec VPN Client configuration... 0 VPN Client Phase 1 (IKE) Configuration.... 0 VPN Client Phase 2 (IPSec) Configuration.... 0 Open the IPSec VPN tunnels.... 0
VPN IPSec Troubleshooting.... 0 4.1 PAYLOAD MALFORMED error.... 0 4.2 INVALID COOKIE error.... 0 4.3 no keystate error.... 0 4.4 received remote ID other than expected error... 0 4.5 NO PROPOSAL CHOSEN error.... 0 4.6 INVALID ID INFORMATION error... 0 4.7 I clicked on Open tunnel, but nothing happens.... 0 4.8 The VPN tunnel is up but I cant ping !.... 0 Contacts..... 0

1 Introduction

1.1 Goal of this document
This document describes how to configure TheGreenBow VPN Client with a Zyxel ZyWall 10.

1.2 Network topology

In our example, we will connect TheGreenBow VPN client to the LAN behind the Zyxel ZyWall Router. The VPN client is connected to the Internet by a dialup connection from an ISP. The client will have a virtual IP address in the remote LAN. All the addresses in this document are given for example purpose.
192.168.1.3 80.11.8.4 155.2.4.36 192.168.1.1

Internet

192.168.1.78 192.168.100.57
2 ZyWall VPN Configuration
ZyNOS Firmware version release of the Zyxel ZyWall 10 used during tests was ZyNOS 3.52 (WA.3) | 05/28/2003.
2.1 ZyWall VPN Configuration interface
Zywall VPN configuration can be achieved with a web browser. Read Zyxel ZyWALL 10 documentation for more information. Once connected to your VPN gateway, click on "VPN" link in the Zyxel ZyWALL 10 VPN configuration interface. Select a VPN connection and click on "Edit":

2.2 ZyWall IKE Mode

Click on "Active". Select "IKE" and "Main" if you want to use IKE Main mode exchange.

2.3 ZyWall Phase 2 IDs

The settings "Local" and "Remote" are in fact Phase 2 IDs. In Local Address Type, you must select "Subnet Address" and fill the field Starting IP Address with the IP addresses of your LAN.

2.4 ZyWall Phase 1 IDs

Phase 1 IDs are set in the following view of the configuration interface. We choose to use IP Addresses as IDs.
2.5 ZyWall IPSec Protocol
Next step consists into selecting IPSec Protocol. TheGreenBow VPN client do not accept AH protocol. Set the Pre-Shared Key and click on "Advanced".
2.6 ZyWall Authentication and encryption algorithms
For Phase 1, select the algorithm you want. DH1 is also known as Diffie-Hellman 768 and DH2 as Diffie-Hellman 1024.
For Phase 2, do not forget to select "ESP" as active protocol.
Click on Apply once you have finished.
3 TheGreenBow IPSec VPN Client configuration
3.1 VPN Client Phase 1 (IKE) Configuration
In the "Interface" field, you can select a star ("*"), if the client host receive a dynamic IP Address from an ISP for example. The "Remote Address" field value is the Zyxel ZyWALL VPN router public IP address or DNS address. By clicking in "Advanced" button, you can setup "Phase 1 Ids" and "Aggressive Mode".
The remote Gateway IP address is either an explicit IP address,

abcdefgh abcdefgh

Phase 1 configuration
3.2 VPN Client Phase 2 (IPSec) Configuration
In this window, you define IPSec VPN Policy. "VPN Client address" is the virtual IP address of the client inside the LAN. With Zyxel VPN gateways, this address must not belong to the remote LAN. Take as example the choice of 192.168.1.100 for virtual IP address. When the VPN client is sending a TCP or an UDP packet to a target remote computer 192.168.0.x, this target will send inside its subnet an ARP request in order to get VPN client MAC address and reply directly to it. But, this request cannot receive any answer because the client is not physically present inside the subnet. So, initial packets from the client will not be answered.

You may define a static virtual IP address here. For use with Zyxel routers, do NOT specify an IP address belonging to the remote LANs Enter the IP address (and subnet mask) of the remote LAN.

Phase2 Configuration

3.3 Open the IPSec VPN tunnels
Once both Zyxel Zywall VPN router and TheGreenBow IPSec VPN Client 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.
4 VPN IPSec Troubleshooting
4.1 PAYLOAD MALFORMED error
114920 Default (SA ZyWALL-P1) SEND phase 1 Main Mode [SA][VID] 114920 Default (SA ZyWALL-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.

4.2 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.

4.3 no keystate error

Default Default Default Default Default Default (SA ZyWALL-P1) SEND (SA ZyWALL-P1) RECV (SA ZyWALL-P1) SEND (SA ZyWALL-P1) RECV (SA ZyWALL-P1) SEND ipsec_get_keystate: phase 1 Main Mode [SA][VID] phase 1 Main Mode [SA][VID] phase 1 Main Mode [KEY][NONCE] phase 1 Main Mode [KEY][NONCE] phase 1 Main Mode [ID][HASH][NOTIFY] no keystate in ISAKMP SA 00B57C50
If you have an no keystate error, 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.

4.4 received remote ID other than expected error
120348 Default (SA ZyWALL-P1) SEND phase 1 Main Mode [SA][VID] 120349 Default (SA ZyWALL-P1) RECV phase 1 Main Mode [SA][VID] 120349 Default (SA ZyWALL-P1) SEND phase 1 Main Mode [KEY][NONCE] 120351 Default (SA ZyWALL-P1) RECV phase 1 Main Mode [KEY][NONCE] 120351 Default (SA ZyWALL-P1) SEND phase 1 Main Mode [ID][HASH][NOTIFY] 120351 Default (SA ZyWALL-P1) RECV phase 1 Main Mode [ID][HASH][NOTIFY] 120351 Default ike_phase_1_recv_ID: received remote ID other than support@thegreenbow.fr

expected

The Remote ID value (see Advanced Button) do not match what the remote endpoint is expected.
4.5 NO PROPOSAL CHOSEN error
115911 Default (SA ZyWALL-P1) SEND phase 1 Main Mode [SA][VID] 115913 Default (SA ZyWALL-P1) RECV phase 1 Main Mode [SA][VID] 115913 Default (SA ZyWALL-P1) SEND phase 1 Main Mode [KEY][NONCE] 115915 Default (SA ZyWALL-P1) RECV phase 1 Main Mode [KEY][NONCE] 115915 Default (SA ZyWALL-P1) SEND phase 1 Main Mode [ID][HASH][NOTIFY] 115915 Default (SA ZyWALL-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 ZyWALL-ZyWALL-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 ZyWALL-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 ZyWALL-P1) SEND phase 1 Main Mode [SA][VID] 115911 Default RECV Informational [NOTIFY] with NO_PROPOSAL_CHOSEN error
4.6 INVALID ID INFORMATION error
122623 Default (SA ZyWALL-P1) SEND phase 1 Main Mode [SA][VID] 122625 Default (SA ZyWALL-P1) RECV phase 1 Main Mode [SA][VID] 122625 Default (SA ZyWALL-P1) SEND phase 1 Main Mode [KEY][NONCE] 122626 Default (SA ZyWALL-P1) RECV phase 1 Main Mode [KEY][NONCE] 122626 Default (SA ZyWALL-P1) SEND phase 1 Main Mode [ID][HASH][NOTIFY] 122626 Default (SA ZyWALL-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 ZyWALL-ZyWALL-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 ZyWALL-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). Check in ZyWALL SA monitor if a previous SA is still alive.

4.7 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).
4.8 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.
IPSec VPN Router Configuration Property of TheGreenBow Sistech SA - Sistech 2001-2005 10/12
Check your ISP support ESP If you still cannot ping, follow ICMP traffic on VPN server LAN interface and on LAN computer interface (with Ethereal 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 ethereal (http://www.ethereal.com) on one of your target computer. You can check that your pings arrive inside the LAN.

5 Contacts

News and updates on TheGreenBow web site : http://www.thegreenbow.com Technical support by email at support@thegreenbow.com Sales contacts at +ou by email at info@thegreenbow.com