Support Forum
The Forums are a place to find answers on a range of Fortinet products from peers and product experts.
New Contributor

usb-tethering instead of real modem for WWAN

Is it possible to get FortiGate to use USB-tethering of an android smartphone instead of a real USB LTE modem  for  the WWAN connection? 

cdc_ncm driver is loaded, good


T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 16 Spd=480  MxCh= 0
D:  Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=18d1 ProdID=4eeb Rev= 5.10
S:  Manufacturer=Google
S:  Product=Pixel 6a
S:  SerialNumber=0123456789012
C:* #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA
A:  FirstIf#= 0 IfCount= 2 Cls=02(comm.) Sub=0d Prot=00
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=0d Prot=00 Driver=cdc_ncm
E:  Ad=82(I) Atr=03(Int.) MxPS=  16 Ivl=32ms
I:  If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=01 Driver=cdc_ncm
I:* If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=01 Driver=cdc_ncm
E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

gw # show system lte-modem
config system lte-modem
set status enable
gw # diag sys lte-modem info
LTE Modem configuration enabled!
LTE Modem device not initialized!
USB Modem Interface:    down
Authen Type:            none
Extra Init String:
Interface mode:         standalone
Holddown Time:          30


When I plug in the phone to my desktop, NetworkManager brings up the connection without further interaction and further configuration. My cable router can also use the phone as a fallback.

Any ideas how to make FG recognize and use the  usb-tethering?


TIA, Oliver

Community Manager
Community Manager

Hello Oliver,

Thank you for using the Community Forum. I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.


Anthony-Fortinet Community Team.
Community Manager
Community Manager

Hello Oliver,


I have contacted one of our engineers and the answer is that it is it not possible to make FortGate recognized and use the USB-tethering.



Anthony-Fortinet Community Team.

Select Forum Responses to become Knowledge Articles!

Select the “Nominate to Knowledge Base” button to recommend a forum post to become a knowledge article.

Top Kudoed Authors