4. SYN Cookie: LTM Configuration
Introduction
Since you already know how SYN Cookie works now it is time to start configuring BIG-IP devices. In this article I explain how to configure BIG-IP LTM devices for protecting against...
Updated Dec 08, 2022
Version 2.0
Javier_Velasco
Employee
EmployeeJavier_VelascoEmployee
Employee
Javier_VelascoEmployee
EmployeeHi Runo,
It seems that article you pointed out should be updated. It is partially correct, in v12 default value for this DB Key was 2999 originally, but for last v12 versions this changed to 16k. I paste below an example for you from a v12.1.6 device:
# tmsh sho sys soft
-------------------------------------------------
Sys::Software Status
Volume Product Version Build Active Status
-------------------------------------------------
HD1.1 BIG-IP 12.1.6 0.0.9 yes complete
# tmsh list sys db pvasyncookies.virtual.maxsyncache all-properties
sys db pvasyncookies.virtual.maxsyncache {
default-value "16000"
scf-config "true"
value "16000" <==!!
value-range "unsigned integer min:193 max:65535"
}
# tmsh modify sys db pvasyncookies.virtual.maxsyncache value 500000
01070049:3: Db variable pvasyncookies.virtual.maxsyncache's value [500000] out of its minimum 193 and maximum 65535 range.
Regards