How to Fight with DoS Attack

A denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a computer resource unavailable to its intended users. DoS attacks are fast becoming the weapon of choice for hackers. However, you can take the following measures to counter these attacks.

1. Disable unused or unneeded network services.
2. Maintain regular backups.
3. Create, maintain, and monitor daily logs.
4. Create appropriate password policies.
5. Implement an Intrusion Detection System.
6. Implement route filters to filter fragmented ICMP packets.
7. Keep a strict vigil on the physical security of your network resources.
8. Configure filters for IP-spoofed packets.
9. Install patches and fixes for TCP SYN attacks.
10. Partition the file system to separate application-specific files from regular data.
11. Deploy tools such as Tripwire that detect changes in configuration information or other files.