How to secure PPPOE network???

RouterOS Beginner Basics
1

HI all
i have rb 1100AHX2 upgraded to 6.33.3 level 6
i have set up it with PPPoE and evry thing is going ok
the matter which i need to make prevent to all snifer programs because there are who use Cain and get all PPPoE usernames &passwords :frowning: :frowning:

2

vlans and mac filtering might help.

3

you need good manageable layer 2 switches to implement layer 2 security

4

Ok can you help me video or link

Is there an explanation for this I am following

5

can you help me To explain

Is there an explanation for this I am following

6

:confused: :frowning: :frowning: