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Restrict zone transfers - slave name servers can request a zone transfer, which is a partial copy of your DNS records.Separate authoritative name server from resolver - don’t run both on the same server, so a DDoS attack on either component won’t take down the other one.
#When was dnc server hacked Patch#
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Request demo Learn more Methods of mitigation Mitigation for name servers and resolversĪ DNS name server is a highly sensitive infrastructure which requires strong security measures, as it can be hijacked and used by hackers to mount DDoS attacks on others: The DNS server resolves the domain to the spoofed website, until the cache is refreshed. Attackers can “poison” the DNS cache by inserting a forged DNS entry, containing an alternative IP destination for the same domain name. DNS servers, routers and computers cache DNS records. For example, attackers can compromise a DNS server, and in this way “spoof” legitimate websites and redirect users to malicious ones.Ĭache poisoning is another way to achieve DNS spoofing, without relying on DNS hijacking (physically taking over the DNS settings). DNS spoofing can be achieved by DNS redirection. Rogue DNS Server - attackers can hack a DNS server, and change DNS records to redirect DNS requests to malicious sites.ĭNS spoofing is an attack in which traffic is redirected from a legitimate website such as to a malicious website such as.Man in the middle DNS attacks - attackers intercept communication between a user and a DNS server, and provide different destination IP addresses pointing to malicious sites.Attackers can take over a router and overwrite DNS settings, affecting all users connected to that router.
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Router DNS hijack - many routers have default passwords or firmware vulnerabilities.