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This article describes what to do when the clients behind the RED should be on the same network as the clients in the LAN behind the Astaro Security Gateway (ASG).
Its also possible to use a dedicated (existing) DHCP server in the LAN to provide the IPs for the remote clients behind the REDs instead of using the DHCP services integrated into the ASG. In which case step 3 above can be missed out.
You will need to add a special packetfilter rule in the following way:
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