I'm only responding as most likely you will not get a response from Endian
themselves, I'm not sure why it is not working if you have syn flood
protection enabled already. I myself am slowly moving from Endian Firewall
Community as I'm not able to get any answers from Endian or their
developers
Endian 3.0.devel : Community Version
Hello
I have the problem that our Endian installation configured as a router
(public subnet on the orange zone) is attacked on the routers
WAN-interface (Red uplink) by massive syn-flood requests.
As we have checked on our Endian syn_cookies are