DDoS Protection

By combining several strategies, you can significantly reduce the risks of a DDoS attack in the area of NTP time servers.

What strategies do we recommend for DDoS protection?

Software updates: Always keep the NTP server software up to date to close known security gaps.
Rate limiting: Limit the number of requests from a single IP address to minimize misuse.
Whitelisting: Allow only trusted IP addresses to access the NTP server.
Monitoring and alerting: Monitor traffic for unusual patterns or spikes that could indicate a DDoS attack and set alerts for such events.
Firewalls and IDS: Use firewalls and intrusion detection systems (IDS) to filter and monitor incoming traffic.
Geographic filtering: Block traffic from regions that are not relevant to your network.

Perhaps you would like to find out more about DDoS?

Network diagram depicting an NTP amplification DDoS attack in which a compromised computer bombards NTP servers with fake requests to send an excessive response to the target

Learn here how to secure your network against NTP amplification DDoS attacks. This sophisticated type of attack exploits the weaknesses of the NTP protocol to cause massive disruption.