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    Port Forwarding on a Double NAT system

    Scheduled Pinned Locked Moved NAT
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    • R
      randomuser2k
      last edited by

      Hi guys. I'm current setting up a pfSense server on Proxmox VM, but I couldn't figure a way to open port to the internet.

      Overview my network structure

      ISP Modem
      • WAN IP: dynamic
      • LAN IP: 192.168.1.1
      Host Machine (Running Proxmox)

      As below
      0_1535274478325_Screenshot at 2018-08-26 16:07:18.png

      Guest Machine (PFSense)
      • WAN IP: 192.168.1.102
      • LAN IP: 10.0.1.1

      I want to open a port on my Host Machine (for example: 10.0.1.2:10000)
      At first I tried Port Forward both on ISP Modem and pfSense
      On pfSense, I create forward rule from WAN:10000 -> 10.0.1.2:10000
      0_1535274988970_Screenshot at 2018-08-26 16:15:27.png
      On ISP Model, I create forward rule from WAN:10000 -> 192.168.1.102:10000 (I also tried to set 192.168.1.102 as DMZ IP)

      I used to solve a Double NAT problem like this before on TP Link router. But it didn't work on this case.

      After googling a while, some people said that I should just disable NAT on pfSense (because for some reason I cannot change my ISP Modem to bridge mode). So I go ahead a disable NAT by choosing "Disable Outbound NAT rule generation. (No Outbound NAT rules)" on NAT > Outbound tab.
      Then, tried to set Port Forward rule on ISP Modem with each rule below but no luck

      • WAN:10000 -> 192.168.1.102:10000
      • WAN:10000 -> 10.0.1.2:10000

      I did tried to debug by view States and Packet Capture then find: "10000" but I nothing was found

      I'm pretty new to networking so if I did something wrong please tell me, also, if you need more debug log/information please let me know.

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