In the face of a server suffering from scam traffic, commonly referred to as a DDoS attack, a distributed denial-of-service attack, the following measures can be taken to mitigate or block the attack:
1.Identify attacks.
Start by confirming if the server is actually suffering from a DDoS attack, or if it's just a traffic spike or a system configuration issue.
2.Enable the defense mechanism.
If your server or network device has DDoS attack protection features, enable it immediately.
Use firewall rules to filter out unusual traffic.
Configure inbound traffic management to limit the number and rate of connections per user.
3.Contact your service provider.
Check with your hosting provider or internet service provider (ISP), who may have more powerful tools and resources to defend against attacks.
Service providers may provide additional DDoS protection services.
4.Use a third-party DDoS protection service.
Consider using professional DDoS protection services such as Cloudflare, Akamai, Imperva, etc., which can defend against attacks before they reach your server.
5.Disperse traffic.
Use a load balancer to spread traffic across multiple servers, which reduces the pressure on a single server.
6.Backup and redundancy.
Ensure data backup and system redundancy so that service can be quickly restored in the event of a server compromise in an attack.
7.Have an emergency plan in place.
Develop a DDoS response plan, including contact lists, notification processes, and back-up infrastructure.
8.Monitoring and recording.
During an attack, all relevant logs and data are recorded, which can be very useful for analyzing attack patterns and future defenses.
9.Legal Approach.
If possible, document attacker information and consider legal avenues to hold accountable.
10.Interim measures.
If the impact of the attack is severe, consider temporarily shutting down the service until the attack ends.
Dealing with DDoS attacks often requires a combination of technology and resources. If you are not an IT professional, it is advisable to seek professional help in a timely manner. Before an attack occurs, it's best to take precautions, such as conducting regular security audits, updating systems and software, and training employees to identify potential security threats.