Correct Answer: A,B,D,E
PPP Secrets is a user authentication mechanism used in MikroTik RouterOS for various PPP-based services.
These include:
* PPP (Point-to-Point Protocol)
* PPPoE (PPP over Ethernet)
* PPTP (Point-to-Point Tunneling Protocol)
* L2TP (Layer 2 Tunneling Protocol)
Each client authenticates with a username/password combination defined under PPP # Secrets. PPP Secrets is not used for:
* IPSec clients ##They use peer configurations and policies
* Router users (Winbox/WebFig) ##Use system # users, not PPP secrets
MTCNA PPP Chapter - Secrets Authentication:
"PPP Secrets are used for all PPP services: PPP, PPPoE, L2TP, and PPTP. It defines usernames, passwords, profiles, and IP bindings." Rene Meneses Guide - Tunnels and PPP:
"Any PPP-based tunnel uses PPP secrets for login validation. This includes local dial-in and remote VPN tunnels." Terry Combs Notes - PPP Authentication Table:
"PPP Secrets = for PPP, PPPoE, PPTP, and L2TP. Not for IPSec or Winbox."