How to block local spoofed addresses using the Linux firewall: 
Attackers are finding sophisticated ways to penetrate even remote networks that are protected by intrusion detection and prevention systems. No IDS/IPS can halt or minimize attacks by hackers who are determined to take over your network. Improper configuration allows attackers to bypass all implemented network security measures.
In this article, I will explain how security engineers or system administrators can prevent these attacks.
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