Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    Routing from a passthrough'ed IP

    Scheduled Pinned Locked Moved General pfSense Questions
    3 Posts 2 Posters 420 Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • K
      kylegordon
      last edited by

      Morning,

      I have a 3G modem attached to the WAN side of my PFSense VM, and all is working well. The 3G modem (a Teltonika RUT950) is operating in bridge mode, and passing the public IP through to the PFSense VM, which is picking it up via DHCP just fine and giving me internet access.

      My issue lies with trying to access the modems management IP on 192.168.1.1. I've given my PFSense VM a Virtual IP, and attached it to the WAN port. Using the shell on PFSense, I can ping the 3G modem, and tcpdump shows successful ICMP traffic from 192.168.1.10 (PFsense) to 192.168.1.1 (the modem).

      However, when it comes to traffic on the LAN, it gets nowhere. LAN traffic, according to tcpdump on PFSense, emits with a source IP of the public IP, not the VIP. As a result, the modem is just dropping this 'foreign' traffic.

      What's the recommended method to ensure this 'WAN side' traffic comes from the VIP rather than the public IP?

      Cheers

      KYle

      V 1 Reply Last reply Reply Quote 0
      • V
        viragomann @kylegordon
        last edited by

        https://docs.netgate.com/pfsense/en/latest/interfaces/accessing-modem-from-inside-firewall.html

        1 Reply Last reply Reply Quote 0
        • K
          kylegordon
          last edited by

          Missed that page in my searches, thank you. Will give that a shot this weekend.

          1 Reply Last reply Reply Quote 0
          • First post
            Last post
          Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.