I have IPS 4255 with IOS 5.x,it is monitoring My internet zone traffic. In my event viewer i m seeing few IPs are consider as attack towards my global IP addresses that are not being used in my network. These IPs are spare global IP for future use.
Attack type is MSSQL Resolution Service Stack Overflow
Signature ID: 4703/0
I have global ip address x.x.x.x/24 and only first 10 ip addresses i m using, rest are not being used anywhere.
Why i m getting attack on these ip addresses and how to prevent it.