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Today, more and more customers are using public cloud service providers such as Microsoft Azure to deploy their server or services, to get high performance, reliable services that are easy to deploy and get to market fastest.

But, these same customers still maintain local branch offices or datacenters. How do you securely connect local services with hosted cloud services? The solution is Hillstone Networks and this document outlines the steps to connect to Windows Azure.

Windows Azure has a relatively fixed setting on IKEv2. To set up an IPSEC tunnel between a Hillstone firewall and an Azure IPSEC service, simply do a match on the Hillstone device.

Below is a typical configuration in 4 easy steps, with the following details:

  • Hillstone Firewall Public IP: 124.193.87.66
  • Hillstone side internal subnet: 192.168.0.0/16
  • Azure side Public IP: 13.94.46.90
  • Azure side internal subnet: 10.1.0.0/16

Step1: Setup IKEv2 proposal

ikev2 proposal “prop1”

hash sha

encryption 3des

group 2

lifetime 10800

exit

Step2: setup IPSEC proposal

ikev2 ipsec-proposal “prop2”

hash sha

encryption aes

lifetime 3600

exit

Step3: Setup IKEv2 peer

ikev2 peer “peer1”

interface ethernet0/1

match-peer “13.94.46.90”

ikev2-proposal “prop1”

local-id ip 124.193.87.66

ikev2-profile “esp-peer1”

remote id ip 13.94.46.90

remote key “key”

traffic-selector src subnet 192.168.0.0/16

traffic-selector dst subnet 10.1.0.0/16

exit

ikev2-profile “esp-peer1”

exit

exit

Step4: Setup the IPSEC tunnel

tunnel ipsec “azure” ikev2

ikev2-peer “peer1”

ipsec-proposal “prop2”

auto-connect

exit

After you complete Steps 1-4, the IKEv2 IPSEC tunnel between Hillstone and Azure will be complete. Admins can bind this tunnel to the routing table (routing based model) or Policy rule ( Policy based model) of the firewall.

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