Hello guys,

I have an UniFi switch. The internet is connected via some router provided by internet provider (LTE):

Router LTE -- Ubiquiti switch -- rest of devices

I need external access to my network, so I started configuring a VPN. I found some instruction (on some blog and YouTube video) but in my control panel there are no options shown in instruction.

So, I think I should buy an UniFi USG, but I'm not sure. Maybe I should buy more devices, or I am completely wrong, and it is possible to configure VPN only on switch?

Also, I have dynamic IP, so I need to configure some dyndns service. I have some domains in OVH, I believe there is an option to configure VPN with my own domain, but I haven't seen any detailed instruction. Do you have any guys?

Last question - should I reconfigure my LTE router to bridge mode or some like this? Currently, there are default configs and switch works with DHCP on the router (I think so).

Can you help me with my network and VPN? I have some basic knowledge, but in practice I'm completely noob.