Is it possible to have same LAN subnet across VPN?

Adam_Morrison

We have some security hardware which consists of a server that will sit in our HQ office and remote units that will sit in branch offices. The server and remote units MUST be on the same subnet. e.g. server is on 192.168.1.1 branch site 1 remote device is 192.168.1.2 branch site 2 remote device is 192.168.1.3

Is it possible to use this scenario and which VPN type must we use?

There will be a single VLAN in use as the firewalls and switches will be dedicated to doing security access and nothing else. I'm just not sure how routing would work. Thanks in advance

jasailafan

You can follow the guide to set the outbound SNAT and inbound DNAT in VPN connection.

https://kb.zyxel.com/KB/searchArticle!gwsViewDetail.action?articleOid=016094&lang=EN

jasailafan

You can follow the guide to set the outbound SNAT and inbound DNAT in VPN connection.

https://kb.zyxel.com/KB/searchArticle!gwsViewDetail.action?articleOid=016094&lang=EN

zardini

This link is not working

can someone help me?

https://kb.zyxel.com/KB/searchArticle!gwsViewDetail.action?articleOid=016094&lang=EN

Zyxel_Kevin

Hi @zardini ,

Greeting Forum, The link kb.zyxel.com stop to provide service.

We started to share Knowledge in FAQ.

For this topic, please kindly see the attached.

Please feel free to contact us if you need furter help. Thank you

How to configure the VPN settings if two sites are using the same network subnet.pdf