How to Block Multiple login?

RouterOS General
1

How can i block multiple login with same PPPoE user credential ? Any Help!!

2

are they all authenticated locally on one machine, or you use some kind of RADIUS?

if locally, in the “/ppp profile” that you use for these users, set “only-one=yes”

3

Users are authenticated through Radius..

a4ubd

4

in that case, see your RADIUS server documentation …