SR 2330 / 4134 IPSec with NAT-T Interoperability with Avaya 1120/1140E IP Deskphone / Live Customer Solution Technical Configuration Guide

Transcription

1 Avaya Secure Router 2330 / 4134 Avaya 1120/1140E IP Deskphone Engineering SR 2330 / 4134 IPSec with NAT-T Interoperability with Avaya 1120/1140E IP Deskphone / Live Customer Solution Technical Configuration Guide Avaya Networking Document Date: Document Number: NN Document Version: 1.0

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3 Contact Avaya Support Avaya provides a telephone number for you to use to report problems or to ask questions about your product. The support telephone number is in the United States. For additional support telephone numbers, see the Avaya Web site: Abstract This document describes a real customer deployment of a secure managed VoIP solution for a teleworker involving the Avaya Secure Router 2330 (SR 2330), Avaya 1100 Series IP Deskphones and the Avaya Communication Server 1000 (CS 1000). Revision Control No Date Version Revised By Remarks 1 14November Laurent Beucher Original Draft 2 13December Mike Fitzgerald Minor edits and additions 3

4 TABLE OF CONTENTS ABOUT THIS DOCUMENT... 5 ACRONYM KEY... 5 INTRODUCTION... 5 NETWORK DIAGRAM... 6 SOLUTION TESTED... 6 SR 2330 CONFIGURATION x0E IP DESKPHONE CONFIGURATION CONFIGURATION APPENDIX.. 12 REFERENCE DOCUMENTATION. 16 CUSTOMER SERVICES

5 About this document Non-Disclosure The Avaya non-disclosure processes will be followed for any documentation and information being released to the End Customer or any type of Channel Partner s personnel not covered by a contract with Avaya prior to GA. Acronym Key Throughout this guide the following acronyms will be used: DH: Diffie Hellman IKE: Internet Key Exchange IPSec: Internet Protocol Security IRAS: Internet Remote Access Server Introduction This Technical Configuration Guide (TCG) describes a real customer deployment of a secure managed VoIP solution for a Teleworker. This solution uses the Avaya Secure Router 2330 (SR 2330), Avaya 1100 Series IP Deskphones and the Avaya Communication Server 1000 (CS 1000). The CS 1000 and SR 2330 are owned by the Service Provider. The Avaya 11xx Phone is at the Teleworker site and requires NAT traversal (NAT-T) across a NAT router. All configuration examples are based on the software and hardware level as shown below. The configuration setup on the Avaya CS 1000 is not in the scope of this document. Equipment used Software Level Avaya Secure Router 2330 (note 1) (note 2) Avaya 1120e IP Deskphone Avaya 1140e IP Deskphone 0624C8G 0625C8G Avaya Communication Server Note 1: Since the SR 4134 shares the same IPSec implementation as the SR 2330, this TCG applies to the SR 4134 as well as the SR Note 2: is a special build used for this test. Previous software build (=>10.3) does not allow the 11x0e IP Deskphone to establish a VPN tunnel to the SR 2330 IRAS when the phone is behind a NAT router. The fixes are incorporated into Secure Router 2330/4134 Release and later. 5

6 Network Diagram Solution Tested IP phones establish a secured IPSec VPN tunnel to the SR 2330 from the Teleworker home office and register to the CS The SR 2330 and CS 1000 are equipment installed and managed at the Service Provider premises. The Teleworker s Avaya 1120e/1140e IP deskphone is located at the customer site and is connected to a consumer-grade router or access device. SR 2330 Configuration 1. Loopback interface added for remote management 2. policy 102 added to Internet FW to allow management of the Secure Router 3. pool 1 addresses range added for Teleworkers 4. management ike policy added (to loopback address) 5. pool 2 addresses range added for 2 x management access's Configuration commands are commented for some additional clarity. The entire configuration for this test is in the Configuration Appendix. 6

7 Interface Configuration ## Loopback interface added for remote management interface loopback mgmt crypto trusted ip address exit interface ## Private interface interface ethernet 0/1 description customer-lan ip address ## proxy arp required so SR arps on behalf of IPsec RAS clients ip proxy_arp ip proxy_arp crypto trusted exit ethernet ## Public interface interface ethernet 0/2 description Internet ip address crypto untrusted exit ethernet ## Default route ip route / Firewall configuration Starting with Secure Router Release 10.3, VPN is no longer tightly coupled with the Firewall. The Firewall can be disabled using the command system security firewall-disabled. For the current solution, the Firewall is mandatory for remote management (a.k.a control tunnel on VPN router). Therefore if the stateful firewall is enabled, SELF policies are very important to allow IKE and IPSec traffic to be permitted. The global firewall configuration can be found in configuration appendix. ## untrusted policies firewall internet interface ethernet0/2 policy 100 in permit service ike self 7

8 policy 101 in permit service contivity self ## allows remote management from provider network policy 102 in address self exit firewall add the following rules only to allow remote testing directly through the Internet policy 103 in permit protocol icmp self policy 104 in permit service telnet self ## trusted policies firewall corp policy 101 in address any any policy 1024 out permit exit firewall IPSec configuration crypto keepalive mode periodic ## contivity-iras used for interoperability with 11x0e phone contivity-iras ## Teleworker IKE policy ike policy teleworker ## local-address is the public interface of the Secure Router. Crypto UNTRUSTED local-address ## remote-id username trings must be quoted, followed by password remote-id user-name "telwkr" vtstw ## first IKE proposal proposal 1 dh-group group2 encryption-algorithm 3des-cbc 8

9 exit proposal client configuration ## address-pool assigned to IP phones address-pool ## private-side address is the LAN interface of the Secure Router. Crypto TRUSTED private-side-address keepalive exit keepalive split-tunnel exit split-tunnel nat-keepalive 20 exit configuration ## Remote management IKE policy ike policy mgmt local-address remote-id user-name "mgt" mgt proposal 1 dh-group group2 encryption-algorithm 3des-cbc exit proposal client configuration ## address-pool for remote management address-pool ## loopback IP address used for remote management private-side-address banner-enable banner-text "If you do not have authorisation to access this device you must click CANCEL and disconnect this session immediately." keepalive exit keepalive split-tunnel exit split-tunnel exit configuration ## Teleworker IPsec policy 9

10 ipsec policy teleworker proposal 1 lifetime seconds 3600 exit proposal ## Remote management IPSEC policy ipsec policy mgmt proposal 1 lifetime seconds 3600 exit proposal exit contivity-iras exit crypto 10

11 11x0e IP Deskphone Configuration Entering configuration mode: Power cycle the phone When the small Avaya message is displayed in the bottom left corner of the screen press the four horizontal buttons just below the screen in sequence from left to right. Do this within 4 seconds. At the Password prompt enter: 26567*738 (COLOR*SET) followed by OK. Use the navigation buttons to move around the screen and the centre button to make a change: 1. Enable VPN 2. Set VPN mode to Aggressive 3. Select Pre-shared-key (PSK) 4. Enter PSK user ID as defined in SR2330 ike policy 5. Enter PSK password as defined in SR2330 ike policy 6. No XAUTH 7. Enter the VPN peer address of SR Set DSCP to EF High Priority 9. Enable DHCP 10. Enter the CS1000 server address 11. Enter the CS1000 port number 11

12 12. Add the provisioning server address (needed for FW and Licencing updates) Configuration Appendix sr2330# show run Retrieving configuration... please wait system logging console priority crit exit console syslog module alarms local0 none module dos local0 none module forwarding local0 none module voip-ssm-cdr local0 none module voip-cdr local0 none module voip-gwy local0 none exit syslog exit logging hostname vts-sr2330 log utc event exit event terminal exit terminal qos module exit module chassis exit chassis exit qos aaa tacacs exit tacacs radius primary_server exit primary_server 12

13 secondary_server exit secondary_server exit radius exit aaa vlan database exit database vlan classification exit classification bridge mstp exit mstp exit bridge lacp exit lacp interface loopback mgmt ip address crypto trusted exit loopback interface ethernet 0/1 description customer-lan ip address ip proxy_arp aaa exit aaa crypto trusted qos module exit module chassis exit chassis exit qos exit ethernet interface ethernet 0/2 description Internet ip address aaa exit aaa crypto untrusted qos module exit module chassis exit chassis exit qos exit ethernet interface console aaa 13

14 exit aaa exit console gvrp exit gvrp snmp-server engine-id local c f exit engine-id chassis-id vts-sr2330 enable traps exit traps exit snmp-server rmon exit rmon oam cfm enable ethtype 88e6 exit cfm exit oam ftp_server icmp_timestamp telnet_server telnet_banner exit telnet_banner sntp exit sntp ip proxy-dns exit proxy-dns ip load-balancing per-flow ip route / ipv6 unicast-routing ipv6 load-balancing per-flow mpls tunnel-mode uniform firewall global algs dns exit dns exit algs max-connection-limit self 2048 exit firewall firewall internet interface ethernet0/2 policy 100 in permit service ike self policy 101 in permit service contivity self 14

15 policy 102 in permit address self exit firewall firewall corp interface ethernet0/1 mgmt policy 101 in permit address any any policy 1024 out permit exit firewall crypto keepalive mode periodic dynamic exit dynamic contivity-iras ike policy teleworker local-address remote-id user-name "telwkr" vtstw proposal 1 dh-group group2 encryption-algorithm 3des-cbc exit proposal client configuration address-pool private-side-address keepalive exit keepalive split-tunnel exit split-tunnel nat-keepalive 20 exit configuration ike policy mgmt local-address remote-id user-name "vts2330" vts1664 proposal 1 dh-group group2 encryption-algorithm 3des-cbc exit proposal client configuration address-pool private-side-address banner-enable banner-text "If you do not have authorization to access this device you must click CANCEL and disconnect this session immediately." keepalive exit keepalive 15

16 split-tunnel exit split-tunnel exit configuration ipsec policy teleworker proposal 1 lifetime seconds 3600 exit proposal ipsec policy mgmt proposal 1 lifetime seconds 3600 exit proposal exit contivity-iras pmtu exit pmtu qos chassis exit chassis exit qos exit crypto dst no enable exit dst sr2330# Reference Documentation Document Title Secure Router IPSec with NAT-T Interop with Avaya 9600 IP phones Security- Configuration_Manage ment AG 2330 & SR 2330/4134 Ordering Config Guide Publication Number NN NN N/A Description ormation 16

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