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That sounds like a plan. I'll check it out, thank you!

Thanks for your reply, I think I didn't explain it clearly.

The Synologys are on the LAN, not on the WAN/ISP-Side, of course this would be extremly unsafe.
What I want to achieve ist for each synology to get its own public adress, but the public adresses are not static but DHCP. All traffic should go through the firewall with only a few ports open.

To get 3 public DHCP-Adresses (WAN, and 2 IPs I want to be able to use as public IP for the 1:1 NAT for each Synology) I connect 3 Ports to the ISP (as I cannot get 3 different DHCP-Adresses with just one port.)

VPN is not an option, as ports 80 and 443 need to be accessible from the wan-side

How can I do that?

Newbie question here...

I'm trying to do the following:

My ISP does not provide static IPs, but multiple IPs via DHCP.
I have two Synologys which I want to be externally accessible (Ports 80,443, DynDNS), both are on the LAN.

I tried the following:

Attach 3 Ports to the ISP-Side (WAN, SYNO1, SYNO2)
Assign Alias-IPs for SYNO1 and SYNO2
1:1-NATs from Alias-IP1 to SYNO1 and Alias-IP2 to SYNO2.
But no luck...

It works if I use the DHCP-Adress for 1:1-NAT, but as this address can change this is obviously not an option.

Can anyone point me in the right direction?

Thanks

Lucas