Fios modem to PFsense Box - Help



  • Currently I have FIOS for internet only. No cable boxes or anything. I have the Fios modem running directly to my TP-Link router with no problems.

    I bought a PFSense box and am going to use my TP-Link as a switch and AP only and kill the routing functions.

    I powered down the FIOS modem (I ditched the FIOS router long ago) and plugged its network cable in the PFSense box WAN port.

    I plugged my laptop to setup PFSense into the LAN port.

    I can get into the Web GUI via the latptop and I set the WAN port for DCHP. However, the WAN gets no IP address and shows 0.0.0.0 in the web interface.

    As soon as I plug it back into the TP-Link, the internet works fine. I am a bit new to networking but really need help.

    Please let me know what I am doing wrong. Also, I set my DNS to 8.8.8.8 and 8.8.4.4



  • I also tried copying the MAC address from the TPLINK to the PFSense box. No luck.

    This is what the box outputs




  • Curious, plug your pfsense box WAN in to your old routers LAN port and plug your laptop in to the pfsense box - see if it works and post back.
    I can't figure as to why it isn't working, considering you tried mac cloning.



  • @Taiidan:

    Curious, plug your pfsense box WAN in to your old routers LAN port and plug your laptop in to the pfsense box - see if it works and post back.
    I can't figure as to why it isn't working, considering you tried mac cloning.

    When I did this it pulled an IP address from the TP link. When I unchecked block private traffic, I was able to get internet on the laptop plugged into the LAN port of the PFSense Box.

    So currently it is running:  FIOS Modem -> TP Link C9 Router Wan Port      TP Link Lan Port -> PFSENSE wan port    PFSense Lan port -> laptop Nic  and it works.

    Where should I got now?



  • Verizon and Frontier DHCP implementations make router replacement more complex that most.  Sometimes just a MAC spoof will do it.  Sometimes not.  Sometimes the DCHP client of their router needs to be impersonated.  A beauty of impersonation is that the routers can then be swapped back and forth for troubleshooting, testing/evaluation,  failure, etc. without issue.

    FIOS - Fake WAN DHCP Setup for G1100 (FiOS Quantum Router) https://forum.pfsense.org/index.php?topic=114389.msg635823#msg635823

    DHCP Client Configuration Advanced Settings Options with pfSense Rel. 2.2 https://forum.pfsense.org/index.php?topic=94298.msg523647#msg523647

    Error /var/etc/dhclient_wan.conf line 14: no option named option-61 https://forum.pfsense.org/index.php?topic=114838.msg638059#msg638059

    Or it may just simply be that the lease has not been successfully released or allowed to expire.



  • @NOYB:

    Verizon and Frontier DHCP implementations make router replacement more complex that most.  Sometimes just a MAC spoof will do it.  Sometimes not.  Sometimes the DCHP client of their router needs to be impersonated.  A beauty of impersonation is that the routers can then be swapped back and forth for troubleshooting, testing/evaluation,  failure, etc. without issue.

    FIOS - Fake WAN DHCP Setup for G1100 (FiOS Quantum Router) https://forum.pfsense.org/index.php?topic=114389.msg635823#msg635823

    DHCP Client Configuration Advanced Settings Options with pfSense Rel. 2.2 https://forum.pfsense.org/index.php?topic=94298.msg523647#msg523647

    Error /var/etc/dhclient_wan.conf line 14: no option named option-61 https://forum.pfsense.org/index.php?topic=114838.msg638059#msg638059

    So since I am not using the Quantum router, just the FIOS modem and my TPLink, I would copy all of the TP Link settings instead using your first guide?



  • To my knowledge Verizon and Frontier FiOS services use a router not a "modem".  Don't what you mean by "modem".  It's not clear to me what the implementation is that's being replaced and what it's being replaced with.

    Also it could just simply be that the previous lease has not been successfully released or allowed to expire.



  • I have it plugged directly into the Verizon ONT i-211M-L, see the attached below. I returned the cable boxes and router/wifi access point to verizon.




  • I don't know what "it" is.  You need to be more descriptive about what the specific devices are and how they are connected and configured etc.



  • @NOYB:

    I don't know what "it" is.  You need to be more descriptive about what the specific devices are and how they are connected and configured etc.

    Current Working Setup:
    Verizon ONT i-211M-L Network Port -> TP Link C9 Router Wan Port      TP Link Lan Port -> PFSENSE wan port    PFSense Lan port -> laptop Nic

    Goal / Not Working:
    Verizon ONT i-211M-LIOS Modem Network Port -> Pfsense WAN Port    PFSense Lan Port -> Laptop Nic  Laptop online



    1. Release the WAN DHCP lease from the TP Link C9 Router.  If it is not capable of sending a DHCP release command packet, then shut it down and either wait 2 hours for the lease to expire, or call Verizon customer support to have them release it.

    2. Release pfSense WAN DHCP lease, configure it's WAN DHCP with default settings, then connect pfSense WAN to the ONT.



  • OP, not sure if you were able to resolve your problem, however as others have stated, if your Fios box is actually a router, then you may be running into a double NAT situation (pfSense box is getting private IP from WAN).

    For additional understanding on this subject, look at this video (1:04:00) https://www.youtube.com/watch?v=rgupXMlz3is

    Hope this helps.

    ps: on another note, if your Fios box is connected to the ONT via Ethernet (not COAX), then you can remove it altogether from the equation. You will have to drop its lease. You can do so via its GUI interface or by disconnecting it from ONT for a few hours.



  • @NOYB:

    1. Release the WAN DHCP lease from the TP Link C9 Router.  If it is not capable of sending a DHCP release command packet, then shut it down and either wait 2 hours for the lease to expire, or call Verizon customer support to have them release it.

    2. Release pfSense WAN DHCP lease, configure it's WAN DHCP with default settings, then connect pfSense WAN to the ONT.

    agree, that workflow should solve the OP's problem



  • Call Verizon (1-800-837-4966) and ask them to release your public IP. This will resolve your issue. I had the same problem. For some reason the "WAN IP RELEASE" option doesn't work with the FIOS network.



  • @Intelli:

    For some reason the "WAN IP RELEASE" option doesn't work with the FIOS network.

    Or maybe it does work but just appears not to because the ISP provided router re-establishes a new lease if the WAN cable is not immediately unplugged before it can do so.  I know the Actiontec MI-424WR behaves this way.  Probably some of the other ISP provided models do too.


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