DDoS Protected Server (TCP/UDP/ICMP)
i7/Xeon grand processor
200GB/500GB/1TB HDD (RAID)
100Mbit/1Gbit Port (metered/unmetered)
4GB/8GB Memory
Remote Control/iLO/KVM/IPMI would be plus.

Requires to prevent attack on any protocol including but not limited to TCP/UDP/ICMP.
Needs to rate limit packets per user's IP address
Prevent SYN based attack
BOTNET based attack (bandwidth saturation)