Mikrotik Fasttrack configuration with L2TP / IPSEC VPN

If you have any experience whatsoever with mikrotik hardware, you have definitely heard about Fasttrack. Fastrack was introduced back in April 2016, in v6.29 of router os, and in very simple terms allows packets for established connections to bypass the kernel, thus improving performance, and decreasing the overall cpu load. However there are known issues which prevent Fasttrack properly to work when using IPSec on the mikrotik. You will find that if you leave the default Fasttrack rule enabled in

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Mikrotik L2TP / IPsec VPN Server Step by Step configuration with Fasttrack enabled!

This tutorial assumes that the WAN interface of the Mikrotik router has a public IP address, and that your ISP does not block ipsec ports. With that out of the way, lets get started. The first step is to create a PPP Profile on the mikrotik. We will use a 192.168.102.1 for the local address (the VPN Gateway), assuming this is not already in use. We also need to add a DNS Server /ppp profile add name=ipsec_vpn local-address=192.168.102.1 dns-server=1.1.1.1 Next

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