1:1 NAT using a WAN w/DHCP (Not Static)

[DanMc85]

I know OPNSense supports using 1:1 NAT from an external WAN IP to an internal LAN IP.

However, does it support doing this with a DHCP WAN IP Address?
This WAN IP Address will be updated using a DynamicDNS Service - this not worried about it being DHCP vs Static.

If this is possible, what configuration steps are needed to accomplish this?

Thanks!

[marjohn56]

1:1 is really for use if you have multiple WAN IPs. If  you only have one WAN IP then all WAN incoming traffic would be mapped to a specific internal IP, is that what you want?

[DanMc85]

1:1 is really for use if you have multiple WAN IPs. If  you only have one WAN IP then all WAN incoming traffic would be mapped to a specific internal IP, is that what you want?

I have TWO WAN IPs, just they are both DHCP.  I want to use one of them in a 1:1 setting.

[marjohn56]

Yes, that will work.

[DanMc85]

Yes, that will work.

Yes, but do you happen to know the steps involved to assign a DHCP WAN address to a 1:1 NAT?  Last time I tried (on an older build of opnsense), I only saw options for manual entry of a static address.

Dan

[marjohn56]

I see what you mean, you cannot enter WAN address there, only a static.


Hmm, see no reason why we cannot alter that a little to allow the selected WAN address, might need to make it an alias.


I'll look into it and see if it can be done.

[DanMc85]

I see what you mean, you cannot enter WAN address there, only a static.


Hmm, see no reason why we cannot alter that a little to allow the selected WAN address, might need to make it an alias.


I'll look into it and see if it can be done.

Thank you

Sent from my SM-N950U using Tapatalk