Depends on the dongle.
Some have ports for external antenna(s)
Attached to a Mikrotik device, you can toggle USB power to do a hardware 
restart of the USB dongle
Anything can be stolen if someone really wants to.

Mikrotiks do have issues with compatibility with random dongles, but it's 
sometimes possible to use a wifi enabled mikrotik device to connect to a wifi 
enabled usb 4g dongle, and just use the router's USB port as a remotely 
resettable power supply. In a pinch it's surprisingly effective.

From: AusNOG [mailto:ausnog-boun...@lists.ausnog.net] On Behalf Of Guy Ellis
Sent: Wednesday, 6 December 2017 1:23 PM
To: ausnog@lists.ausnog.net
Subject: Re: [AusNOG] 4G VPN Router

Personally I would not go near a USB Dongle for the following reasons...

(i) No antenna diversity
(ii) Difficult to reset - certainly not practical at unmanned sites
(iii) Easily stolen

Regards,
 - Guy.

On 6/12/2017 12:37 PM, Daniel Bech wrote:

[https://tr.cloudmagic.com/h/v6/emailtag/tag/2.0/1512524225/048ad431520b41e2b584a8ae7651496f/1/4c81e5709e7e5d935371be5aa072f1c2/227649beb85bed3f97712c06e849e73e/122d33586719673d61b546cc672ab9b0/newton.gif]Hey
 Jim,


You could achieve this with most 4G dongles and a MikroTik router (for example: 
https://mikrotik.com/product/RB750Gr3)

Regards,
Daniel Bech
dan...@funnyhat.club<mailto:dan...@funnyhat.club>
On Wed, Dec 06, 2017 at 7:36am, Jim Peters 
<jimmy.p...@gmx.com<mailto:jimmy.p...@gmx.com>> wrote:

Hi Guys,

Just wondering if anyone had any reccomendations for 4G router hardware 
(consumer/prosumer) that supported site-to-site vpn.
seems like there is quite a bit of equipment that can host vpn, however not 
alot of it can join something already existing.

i've used some tp-link (mr200) units with ipsec support but the dynamic ip from 
4g make this an issue.

would love to hear your thoughts.

also fyi. telstra is main carrier, however some optus will be used when 
coverage is an issue

Thanks Jim

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