Allied Telesis AR440S manual Introduction, Contents

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AlliedWareTM OS

How To Configure VPNs in a Corporate Network, with Optional Prioritisation of VoIP

Introduction

In this How To Note’s example, a headquarters office has VPNs to two branch offices and a number of roaming VPN clients. The example illustrates the following possible components that you could use in a corporate network:

zVPNs between a headquarters office and roaming VPN clients, such as travellers’ laptops

zVPNs between a branch office and roaming VPN clients, such as travellers’ laptops

za VPN between a headquarters office and a branch office with a fixed IP address, when the branch office has an ADSL PPPoA connection to the internet

za VPN between a headquarters office and a branch office with a dynamically assigned IP address, when the branch office has an ADSL PPPoEoA connection to the internet

zusing software QoS to prioritise voice (VoIP) traffic over the VPNs

Select the solution components that are relevant for your network requirements and internet connection type.

Contents

 

Which products and software versions does this information apply to?

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Related How To Notes

2

About IPsec modes: tunnel and transport

3

Background: NAT-T and policies

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How to configure VPNs in typical corporate networks

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Before you start

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How to configure the headquarters VPN access concentrator

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How to configure the AR440S router at branch office 1

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How to configure the AR440S router at branch office 2

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C613-16049-00 REV E

www.alliedtelesis.com

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Contents Introduction ContentsRelated How To Notes L2TP About IPsec modes tunnel and transportInternet Background NAT-T and policies5 AlliedWare OS How To Note VPNs for Corporate Networks Vlan How to configure VPNs in typical corporate networksATM Dslam Before you startConfigure general system and user settings How to configure the headquarters VPN access concentratorConfigure remote management access, if desired Configure IP for internet accessCapture status information remotely, if desired Configure dynamic PPP over L2TP connectionsCheck feature licences Enable Isakmp Configure the firewall’s basic settings Configure the firewall’s access rules Save your configuration How to configure the AR440S router at branch office Configure PPP for PPPoA Configure Adsl for internet accessConfigure IP 18 AlliedWare OS How To Note VPNs for Corporate Networks Create ip pool=roaming ip=192.168.144.1-192.168.144.50 Create ipsec pol=internet int=ppp0 ac=permit Add firewall policy=branch1 int=vlan1 type=private 22 AlliedWare OS How To Note VPNs for Corporate Networks 23 AlliedWare OS How To Note VPNs for Corporate Networks Set system name=Branch2 Configure PPP for PPPoE 26 AlliedWare OS How To Note VPNs for Corporate Networks Configure the VPNs for connecting to the headquarters office Enable isakmp 29 AlliedWare OS How To Note VPNs for Corporate Networks How to make voice traffic high priority Reduce the MTU Create classifiersFor roaming clients, set L2TP TOS reflection For site-to-site VPNs, apply the SQoS policy to the tunnelsSet int=ppp0 mtu=256 34 AlliedWare OS How To Note VPNs for Corporate Networks Apply the SQoS policy to the tunnel LANs are How to test your VPN solutionBefore you use these scripts Configuration scripts for headquarters and branch officesHeadquarters VPN access concentrators configuration # SSH configuration # Dhcp configuration# Log configuration # Ipsec configuration# Isakmp Configuration # Firewall configuration # Classifier configuration if prioritising VoIP # INT configuration if prioritising VoIP# Software QoS configuration if prioritising VoIP # Trigger configuration if prioritising VoIP# Adsl configuration # ATM configuration# PPP configuration for PPPoA 44 AlliedWare OS How To Note VPNs for Corporate Networks 45 AlliedWare OS How To Note VPNs for Corporate Networks 46 AlliedWare OS How To Note VPNs for Corporate Networks Set int=ppp0 mtu=256 Set int=ppp0 frag=yes # PPP configuration for PPPoE # ETH configuration49 AlliedWare OS How To Note VPNs for Corporate Networks 50 AlliedWare OS How To Note VPNs for Corporate Networks 51 AlliedWare OS How To Note VPNs for Corporate Networks # PPP templates configuration ISPs PPPoE access concentrator configuration# PPP configuration # Firewall configuration enable firewall Hotels NAT gateway firewall configuration
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AR440S specifications

Allied Telesis offers a range of advanced routers designed to meet the connectivity and operational needs of modern enterprises. Among its extensive lineup, the AR450S, AR441S, AR415S, AR442S, and AR440S models stand out for their robust features and technologies, making them ideal solutions for various networking environments.

The Allied Telesis AR450S is a high-performance router tailored for service providers and large enterprises. It supports advanced routing protocols, including IPv4 and IPv6, ensuring compatibility with both legacy and modern networks. The AR450S boasts substantial throughput capabilities, making it suitable for bandwidth-intensive applications. Its versatile WAN options, including Ethernet and cellular connectivity, allow seamless integration into diverse network architectures.

Next in the lineup is the AR441S, which focuses on providing enhanced security and reliability. With built-in firewall capabilities and VPN support, this model ensures secure communication over the internet. The AR441S also features numerous Ethernet ports for flexible connectivity, enabling organizations to scale their networks as needed. Its user-friendly interface facilitates straightforward configuration and management.

The AR415S is designed for branch offices and small to medium-sized enterprises. This router offers a balance of performance and affordability, equipped with essential features like Quality of Service (QoS) and traffic shaping. The AR415S supports multiple WAN connections, which helps in maintaining reliable internet access by auto-failing to backup connections when necessary.

The AR442S incorporates advanced networking technologies, including dynamic routing protocols and deep packet inspection. This model enhances performance by optimizing traffic flow and improving bandwidth utilization. Its support for VoIP and other multimedia applications makes it an excellent choice for organizations seeking to maximize their communication capabilities.

Lastly, the AR440S is engineered for high availability and redundancy. It includes dual power supplies and hot-swappable components, ensuring that network services remain uninterrupted during maintenance. The AR440S is particularly valuable in mission-critical environments where downtime can lead to significant business disruption.

In summary, the Allied Telesis AR series routers—AR450S, AR441S, AR415S, AR442S, and AR440S—offer a rich set of features tailored to various operational needs. With their advanced routing capabilities, security features, and reliable performance, these routers represent the cutting edge of networking technology for businesses looking to enhance their connectivity and operational efficiency.