Thanks for the support
Some news about this issue.
Many security, optimization and upgrades where made, there are still some tweaks to do, but now we can cope with such attacks
So now we have few lines of defense so to speak,
1st is hardware:
Cisco Anomaly Guard Module* [Cisco Services Modules] - Cisco Systems
2nd are firewalls and all other security measures
3rd are custom made scripts
4th is optimized and stronger server
If this is not enough then we will get even better hardware and security