Depends on the scale of the attack, But based on the names from the original attacker way back when, they are using the legend DDoSer, which I believe limits attacks to 30 mins.
Curious though, does the LFS Master Server not have any DDoS protection? I know the location that my LFS Servers we have Cisco Guard, and they supposibly handle up to 10GB/s attacks, with a 15GB/s burst(The Datacenter I host at, host alot of goverment stuff, so they need high security, and protection). The attackers never managed to take my Cruise server down back when this all started. o.O