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

    DhCP and VPN Tunnel

    Scheduled Pinned Locked Moved
    DHCP and DNS
    1
    1
    1.5k
    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.
    • V
      vantage
      last edited by

      I have 2 sites with Pfsense boxes as gateways.

      LAN1 –-  PFSense1 --- Internet --- PFSense2 --- LAN2
                              ______ VPN ________/

      LAN1 has a few hundred VoIP phones.
      They are trying to DHCP against PFSense1

      On LAN2 I have a VoIP gateway with a DHCP server.

      I have DHCRelay relaying DHCP requests to the DHCP server on LAN2 across the VPN tunnel. It WAS working.  Without any odd routes set on PFSense1.
      It stopped yesterday.

      What I noticed when it stopped was that the stated for the DHCP traffic are no longer appearing in the state table of PFSense2.
      I have read the articles in the forum on this. They recommended a static route on PFSense1.  I have added that and now I see the states onPFSense2 showing the traffic transiting both interfaces to get to the DHCP server on LAN2.  But I do not see any reply.  and the DHCP server logs do not show the traffic ever arriving.  This LAN is off site and would take a good deal of effort and time to get any type of packet capture from.

      I am collecting TCPdump DHCP traffic from the interfaces later this morning..  so that may shed light. 
      Does anyone see anything I am missing?

      James

      1 Reply Last reply Reply Quote 0
      • First post
        Last post