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

    NAT + TFTP = No Go

    Scheduled Pinned Locked Moved NAT
    2 Posts 1 Posters 1.8k 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.
    • B
      breakaway
      last edited by

      Hi All,

      I've got a TFTP server behind a pfSense behind a single WAN connection at my work, and at my home office I used to have a Linksys WRT54G running Tomato firmware. I was using the Linksys to throw out a DHCP option 150 which was the WAN IP of my work. The VoIP phone would pick up option 150, download the config/firmware from the TFTP server that was behind NAT and everything was fine and dandy.

      However now I've replaced my Linksys WRT54G with a pfSense. So now at both ends I've got a pfSense, version is 2.1.4, and now TFTP won't work! I can't grab the TFTP config files from my work server.

      I tried to use wireshark to figure out what's happening at my end – it appears that when I try to grab the file over TFTP from my home office, the remote server does not respond at all. However when I watch the logs on the TFTP server at work, I see that my home system is attempting to retrieve the file as requested.

      I think the issue is w/ NAT. I've attempted turning on Static NAT (as this helped my SIP registration issues) but it hasn't helped in this instance.

      Do I need to do anything special to get this to work?

      1 Reply Last reply Reply Quote 0
      • B
        breakaway
        last edited by

        Doh, after a bit of googling it appears I've answered my own question. I had to enable the TFTP helper to get it to work.

        This setting is located at System > Advanced > Firewall/NAT and selected the "TFTP Proxy" for the LAN interface (from the perspective of where my VoIP phones are at my home office).

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