branch office 2

7. Check feature licences

Check that you have a 3DES feature licence for the ISAKMP policy.

show feature

You can purchase feature licences from your Allied Telesis distributor.

If necessary, install the licence, using the password provided by your distributor.

enable feature=3des pass=<licence-number>

8. Configure the VPNs for connecting to the headquarters office

Enable IPsec

enable ipsec

In this example, IPsec SA specification proposes:

zISAKMP as the key management protocol

zESP as the IPsec protocol

z3DES as the encryption algorithm for ESP

zSHA as the hashing algorithm for ESP authentication

Create an SA specification for the headquarters office site-to-site VPN. This SA specification uses tunnel mode by default.

create ipsec sas=1 key=isakmp prot=esp enc=3desouter hasha=sha

Note that the branch office 2 router has no connections from roaming VPN clients so does not need SA specifications for them.

Create an IPsec bundle for the SA specification.

create ipsec bund=1 key=isakmp string="1"

Create an IPsec policy to permit ISAKMP messages to bypass IPsec.

create ipsec pol=isakmp int=ppp0 ac=permit lp=500 rp=500

Create an IPsec policy for the VPN traffic between headquarters and branch office 2. Identify the traffic by its local and remote addresses—in this example the subnet used on the LAN at branch office 2 (local) is 192.168.142.0/24 so use that as the local address selector. However, define a wider remote address selector, to allow for other incoming VPN traffic via headquarters.

create ipsec pol=hq int=ppp0 ac=ipsec key=isakmp bund=1 peer=200.200.200.1 isa=hq lad=192.168.142.0 lma=255.255.255.0 rad=192.168.0.0 rma=255.255.0.0

Page 27 AlliedWare™ OS How To Note: VPNs for Corporate Networks

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Allied Telesis AR440S manual Configure the VPNs for connecting to the headquarters office
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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.
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