How to Block Source IP when detect port scan for 10 minutes

Dear Concern,

I was saw that someone can try nmap port scanning to findout the open ports or services via WAN side or LAN side and then he attempt the attacks like brute force etc. Can you help me that how can I find the source IP of attacker and how can i configure to block this IP for 10 minutes while he can try port scan automatically. 

Thanks and waiting for your helpful appreciable response.