Here are some tips for keeping your server safe
Buy a DDoS protected server from a reliable host.
There are various DDoS protected services you can buy from companies such as OVH, Voxility and Zare. Be sure to get a service from a DDoS protected company to help protect your server from attacks.
If you are running a TeamSpeak 3 server behind a DDoS protection tunnel/proxy**
Turn off the web list reporting option to make sure your IP remains hidden.
Right click your server and select "Edit Virtual Server" Click the "Misc" tab. Untick "Enable reporting to the server list". Press OK.