RB951G-2HnD and 4G USB modem (ppp-client)

RouterOS Beginner Basics
1

Hi,
I have RB951G-2HnD which works OK with WAN (ISP cable plugged in port 1).

Now I want it to work with 4G USB modem, E3276 and ppp-client.
Problem is, USB stick gets connected just fine without any tweaking, I can ping and resolve hosts from router itself (i.e., logged in via ssh), but nothing gets routed through the box.

No ping, no IP connection works from the PC connected to RB951G-2HnD

Must be something trivial yet I cannot figure it out.
What else is required for USB modem and ppp-client to work?

Thanks for you time, guys.
Kind regards,
shpokas

2

you need to add a NAT rule with action masquerading and out-interface ppp-out1.

3

Indeed. Probably a rule blocking input on ppp-out1 interface is useful, too.
Thanks!
shpokas