L2TP Tunnel (Remotely Connect To Work Computer From Home)

L2TP is a secure tunnel protocol for transporting IP traffic using PPP. L2TP encapsulates PPP in virtual lines that run over IP, Frame Relay and other protocols (that are not currently supported by MikroTik RouterOS). L2TP incorporates PPP and MPPE (Microsoft Point to Point Encryption) to make encrypted links. The purpose of this protocol is to allow the Layer 2 and PPP endpoints to reside on different devices interconnected by a packet-switched network. With L2TP, a user has a Layer 2 connection to an access concentrator - LAC (e.g., modem bank, ADSL DSLAM, etc.), and the concentrator then tunnels individual PPP frames to the Network Access Server - NAS. This allows the actual processing of PPP packets to be separated from the termination of the Layer 2 circuit. From the user's perspective, there is no functional difference between having the L2 circuit terminate in a NAS directly or using L2TP. for more details

/ip pool
add name=L2TP ranges=172.16.100.1-172.16.100.254
/ppp profile
add dns-server=10.10.0.1,8.8.8.8 local-address=10.10.0.1 name=L2TP-VPN \
    remote-address=L2TP
/interface l2tp-server server
set default-profile=L2TP-VPN enabled=yes ipsec-secret=itlearnweb use-ipsec=yes
/ppp secret
add name=test password=test profile=L2TP-VPN service=l2tp
/ip firewall nat
add action=masquerade chain=srcnat comment="L2TP-VPN Masquerade" src-address=\
    172.16.100.1-172.16.100.254