What happen when IPFire under DDoS attack

This demonstrate when ipfire under SYN flood DDoS attack, ipfire becomes sluggish and not responsive without XDP SYN flood protection

[@zhengyupann]

Is IPFire a operating system like centos？ Does it open-source？

[@BPFireOS]

IPFire is Linux based open source operating system, unlike centos though, every IPFire package is built from source and can be installed/removed with pakfire package system