Hi,
I’m thinking of setting up a backup WAN on my PFsense, using a USB stick for a SIM card.
I can get an “pay as much as you use” subscription, that would cost me close to nothing, but would be ideal for a “failover” backup connection …
… any ideas on how to set this up in PFsense, and which USB stick to use ?
P.S. I’m in Europe, so it needs to be the GSM standard …
Hi did this as a test one time, it was straight forward
plug in the stick was recognized straight away as a modem “3 Ireland Europe”
Then just setup your interfaces, gateways ETC and you can have fall over or route different types of traffic through whatever gateway
I had some cheapy usb dongle from t-mobile? (they changed name arround the time I got it)
It worked natively in pfSense, and had okay ish throughput, but it sometimes didnt pick up on reboot, and would always drop connection if it had any tilt. Get a quality stick and make sure it doesnt get knocked out. Its a shame that intenal USB ports are in a metal cage.
I already have failover at the moment (my main ISP is Telenet cable, and my backup ISP is Scarlet ADSL), but I want to dump the Scarlet subscription and replace it with a “pay as you use” SIM card …
I used it in Hungary, with my phones sim card, and another prepayed one, and it worked. I remember full bars (it was 6 months ago, when I set it up). I got it out on the field now, transmitting some sweet LoRa Data, but I will go tear it down and check it again when I have some time to do it.
If I connect this router to Wan2 of the PFsense, Wan2 will get an IP from it’s DHCP server
in my case 192.168.11.100 because the SIM router is on 192.168.11.1
let’s hope it’s not double NATted (I unchecked NAT in the settings, so fingers crossed)
my LAN (from PFsense DHCP server) is 192.168.1.xxx …
So ny question is : will I still be able to reach the settings of this Router (192.168.11.1), once the PFsense is “between” it and me ?
Do I need certain rules for reaching it, or is it simply impossible ?
I don’t see why not. if I understand correctly from the 4g modem’s point of view, your pfsense should be considered LAN so safe network. If you try the other ways, than pfSense will block it since it is considered WAN (thus unsafe). (Its pretty easy to allow the webconsole from the wan side too if you need to.)