# Pool /ip pool add name=l2tp-pool ranges=192.168.100.10-192.168.100.100
If you see a "phase1 negotiation failed due to time up" error, it is almost always caused by a Network Address Translation (NAT) table issue in the router provided by your ISP. The simplest fix is to reboot the ISP's router/modem . A more permanent solution, if possible, is to configure the MikroTik as a "DMZ host" in that ISP router, which forces it to use untranslated ports. mikrotik l2tp server setup full
💡 If your MikroTik is behind a NAT (another router), you may need to add a registry key on Windows ( AssumeUDPEncapsulationContextOnSendRule ) to allow L2TP/IPsec connections. Summary Checklist IP Pool created. PPP Profile configured with encryption. User secrets added. L2TP Server enabled with IPsec Required. Firewall ports (500, 4500, 1701) opened. Proxy ARP enabled on the local bridge. # Pool /ip pool add name=l2tp-pool ranges=192
VPN clients need IP addresses assigned to them when they connect. Creating a dedicated IP pool ensures these addresses do not conflict with your existing local area network (LAN) devices. Open Winbox and navigate to > Pool . Click the + (Add) button. Set the Name to l2tp-pool . 💡 If your MikroTik is behind a NAT
Each user needs unique credentials to authenticate with the server. : PPP -> Secrets -> Add (+) Name : username Password : secure_password Service : l2tp Profile : l2tp_profile 4. Enable the L2TP Server with IPsec