PFSense impersonate MAC

Discussion in 'Networking' started by Stonent, Aug 2, 2019.

  1. Stonent

    Stonent New Member

    Dec 16, 2016
    Likes Received:
    My internet comes in via an RJ45 to a ISP provided "modem" that also has gigabit ports and wifi. I suspect like many it is MAC locked to that device. I would like to insert a firewall before the "modem" and was wondering if anyone had done this before? I assume the "modem" is required because it has so much ISP related stuff in the menus. It's a Calix Gigacenter.

    Basically I'm wondering how PFSense can deal with impersonating a MAC of a device that's on its output port, if that will cause strange issues or not and hopefully trick the modem into not seeing it.
  2. RTM

    RTM Active Member

    Jan 26, 2014
    Likes Received:
    If you want to use a different MAC Address than the original one, you can change it quite easily:
    Open the interface under the "Interfaces" dropdown and edit the "MAC address" field.

    TL;DR: Interfaces -> WAN (probably) -> MAC Address field

    BTW: If this works, then I doubt you'll need to use the "modem".
Similar Threads: PFSense impersonate
Forum Title Date
Networking pfSense - HP T620+ vs Dell Wyse 5070 Dec 18, 2019
Networking pfSense on Physical Switch Nov 25, 2019
Networking Intel D-1518 build for PFSense 10Gb SFP+ router Nov 8, 2019
Networking pFsense pros Oct 20, 2019
Networking Supermicro SYS-5018A-LTN4 for last Pfsense ? Oct 7, 2019

Share This Page