Netgate SG-1000 microFirewall

Author Topic: wifi hotspot as backup WAN interface?  (Read 637 times)

0 Members and 1 Guest are viewing this topic.

Offline thender

  • Newbie
  • *
  • Posts: 3
  • Karma: +0/-0
    • View Profile
wifi hotspot as backup WAN interface?
« on: August 09, 2017, 10:00:51 am »
We have a business cable connection in a terrible area with no competition, which costs over $500/month and often has downtime. I'd like the ability to switch the WAN connection over from the cable modem to a 4G LTE phone with wifi hotspot when the wired connection to the WAN from our ISP goes down. This way it is a seamless transition for the 100+ devices connected to the LAN at the router level. It wouldn't be optimal, but better than nothing during the frequent downtime.

If I were to pick up a machine that had two LAN interfaces and one wifi interface, would this be doable? Telling pfsense to use the cable connection for WAN, but being able to disable that on will and have pfsense box's wifi interface connect to a wifi network and use that for WAN when the cable connection goes down?

Thank you, and my apologies if this has already been documented or discussed.

Offline jimp

  • Administrator
  • Hero Member
  • *****
  • Posts: 21619
  • Karma: +1484/-26
    • View Profile
Re: wifi hotspot as backup WAN interface?
« Reply #1 on: August 15, 2017, 09:25:14 am »
It would work the same as any wireless WAN. Though you'd want to keep gateway monitoring disabled so it doesn't needlessly consume your tethering/hotspot data. Since it's your secondary/backup WAN that won't make any functional difference to how it operates for you.

Wireless WANs can be OK, but honestly it's better to use a wired connection to a "myfi" or similar device that handles the wireless in an abstracted way and uses an Ethernet (not USB!) handoff to the firewall.
Need help fast? Commercial Support!

Co-Author of pfSense: The Definitive Guide. - Check the Doc Wiki for FAQs.

Do not PM for help!

Offline johnpoz

  • Hero Member
  • *****
  • Posts: 15491
  • Karma: +1436/-206
  • Not a pfSense employee, they cannot fire me...
    • View Profile
Re: wifi hotspot as backup WAN interface?
« Reply #2 on: September 05, 2017, 03:42:46 pm »
Yeah wouldn't it be easier to just get something like this LTE modem.

And then connect that to a ethernet wan port on pfsense and use it as your backup link?  A device like this has to be better than a hot spot running off a phone ;)
- An intelligent man is sometimes forced to be drunk to spend time with his fools.
- Please don't PM me for personal help
- if you want to say thanks applaud or
1x SG-2440 2.4.2-RELEASE-p1 (work)
1x SG-3100 Shipped 3/15 (work)
1x SG-4860 2.4.2-RELEASE-p1 (home)