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Tag Archives: IPSec

GRE over IPSec on Huawei AR routers

If you want to recall how to configure GRE, just look at GRE on Huawei routers.

You can return to IPSec configuration, reading IPSec on Huawei AR router.

Today, I’m going to put them together and try to configure GRE over IPSec.

Based on the topology below, configure IP adresses and OSPF protocol to ensure connectivity between all routers (omitted here).

Configure tunnel interface on labnario_1 and labnario_3:

[labnario_1]interface Tunnel0/0/0
[labnario_1-Tunnel0/0/0] ip address 10.0.0.1 255.255.255.0 
[labnario_1-Tunnel0/0/0] tunnel-protocol gre
[labnario_1-Tunnel0/0/0] source 150.0.0.1
[labnario_1-Tunnel0/0/0] destination 160.0.0.1

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IPSec on Huawei AR router

How to secure communication between two sites connected to the Internet?

Use Site-to-Site IPsec VPN tunnel between two Huawei routers. IPsec VPN is an open standard protocol suite, defined by the IETF in the following RFCs: 2401, 2402-2412, 2451. IPSec is a widely used protocol for securing traffic on IP networks, including the Internet. IPSec can encrypt data between various devices, including router to router, firewall to router, desktop to router, and desktop to server.

How to configure IPsec VPN using Huawei CLI?

Let’s assume that we have two sites, Site1 and Site2. Both sites have PCs connected to the LAN network, PC1 and PC2 respectively. The sites are connected through WAN network (in our case labnarioR2 router simulates WAN). We want to secure communication between PC1 and PC2. To do so, we have to configure IPSec VPN tunnel between both sites. In our case tunnel will be established between labnarioR1 and labnarioR3 routers. Both routers will be responsible for data encryption and decryption using specified algorithms.

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