Enabling syncookies has no effect on hping3 attack

Hi,

I’m pretty new to this, so bare with me, if i ask some very basic questions…

I have the following setup:
Mac OSX 10.15.4
VMware Fusion 11.5.3 running:

  • GNS3 2.2.8
  • Kali Linux VMware 64-bit v.2020.2
  • MikroTik v. 7.0beta5 running in GNS3.

I’m doing a school project, where i’m trying to conduct a hping3 syn attack from Kali Linux. (tried with the synflood-auxiliary as well, but that didn’t hit Mikrotik with the same amount of requests)
I can see all the SYN-requests in wireshark, and i can see a slight increase in CPU usage when using

/system resource monitor

and alot of trafic on

/interface monitor-traffic ether1

. BUT… When enabling syn-cookies (

/ip settings set tcp-syncookies=yes

), the attack still hits Mikrotik with the same amount of trafic, and doesn’t seem affected by it..

Am i missing something very obvious?