Detecting NXDOMAIN DDoS attacks requires DNS security technology that can monitor and manage DNS request and response rates, and analyze traffic patterns for anomalies that may indicate a DDoS attack. Real-time alerts andcybersecuritytools can help IT teams to quickly identify spikes in NXDOMAIN repli...
Blocking Malicious Domains:If the requested domain is found in the blacklist, the DNS resolver will take one of the following actions: Return a “non-existent domain” (NXDOMAIN) response, indicating that the domain does not exist. Redirect the user to a “block page” or a “warning page,...
NX TTL:If a domain request results in a nonexistent query (NXDOMAIN), this is the amount of time that is respected by the recursor to return the NXDOMAIN response. TTL and CDN Acontent delivery network (CDN)is a network of servers located in geographically dispersed areas that enables faster...
Unfortunately, registrar DNS offerings generally don’t offer the ability to peek behind the curtain andexamine the details of traffic patterns. They can provide you with a few facts about the symptoms of poor performance, such as increased NXDOMAIN responses. However, they don’t help you identi...
Customers can explore DNS queries based on response code, record type, as well as records that return NXDOMAIN response. Customers can also view DNS query distribution across Cloudflare's data centers. This feature is accessible in the Analytics Tab of the Cloudflare Dashboard or through the DNS...
Customers can explore DNS queries based on response code, record type, as well as records that return NXDOMAIN response. Customers can also view DNS query distribution across Cloudflare's data centers. This feature is accessible in the Analytics Tab of the Cloudflare Dashboard or through the DNS...
Imperva detects and mitigates any type of DDoS attack, including TCP SYN+ACK, TCP Fragment, UDP, Slowloris, Spoofing, ICMP, IGMP, HTTP Flood, Brute Force, Connection Flood, DNS Flood, NXDomain, Ping of Death, Smurf, Reflected ICMP & UDP. ...
loss, even if the packet is lost, just re-request it once. And the DNS message allows filling in the sequence number field. For the request message and its corresponding response message, this field is the same, and it can be used to distinguish which request the DNS response corresponds ...
QueriesFailure: The number of queries that did not result in a successful response, for example when the response is DNS SERVER FAILURE. QueriesNameError: The number of queries that resulted in an NXDOMAIN or EMPTY AUTH response. QueriesReceived: The total number of queries received for the spe...
This is a denial of service attack that's also referred to as a NXDomain attack. This attack sends authoritative name servers requests for nonexistence subdomains making them unable to respond to real queries. DNS amplification attack (DNS flood) ...