[ solved ] syncookies block http(s) traffic for some not all sites

[JL]

Because I've spent extraordinary time on finding out since I don't understand the context (yet)

Enabling syncookies blocks some site but not all, this is particulary so for sites hosted by sucuri.net such as linuxmint.com and reportedly also facebook sites. Which makes one wonder what's the common factor here.

Solution is two-fold. Disable syn cookies are set them to adaptive. When setting to adaptive use a value of start of >= 50% but <100%

Hope this helps.

br,

Joris