[CRNpolyfluoric]

Hey Mr. Kurd,
Sorry to hear of your troubles. Axi's advice on configuration is critical and this is square one for anybody running public-facing systems. You say that the attack was "very strong"; please elaborate. Origin, packet types, bandwidth consumed, duration etc. Logs would be ideal. Load balancers and firewalls are excellent but the fundamental problem with all DOS is link saturation.

PM me if you would like assistance configuring a more aggressive mitigation system.

Cheers,
Poly