Preventing Use of Recursive Nameservers in Reflector Attacks

“…In the case of UDP traffic, this will help protect against reflector attacks [RFC5358] and in the case of TCP traffic it will prevent an unknown client from exhausting the server's limits on the number of concurrent connections.…”

Section: Bellis Standards Track [Page 5]mentioning

confidence: 99%

DNS Transport over TCP - Implementation Requirements

Bellis¹

2010

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“…Disabling recursion prevents an authoritative name server from sending queries on behalf of other name servers and building up a cache using responses. Disabling this function eliminates the cache poisoning threat on authoritative serves and prevents their use as reflectors for DDoS attacks [BCP140]. In BIND, recursion is disabled by using the options statement in the BIND configuration file as follows:…”

Section: Dedicated Name Server Instance For Each Functionmentioning

confidence: 99%

Secure Domain Name System (DNS) deployment guide

Chandramouli¹,

Rose²

2010

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The Information Technology Laboratory (ITL) at the National Institute of Standards and Technology (NIST) promotes the U.S. economy and public welfare by providing technical leadership for the nation's measurement and standards infrastructure. ITL develops tests, test methods, reference data, proof of concept implementations, and technical analysis to advance the development and productive use of information technology. ITL's responsibilities include the development of technical, physical, administrative, and management standards and guidelines for the cost-effective security and privacy of sensitive unclassified information in Federal computer systems. This Special Publication 800-series reports on ITL's research, guidance, and outreach efforts in computer security and its collaborative activities with industry, government, and academic organizations.

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Preventing Use of Recursive Nameservers in Reflector Attacks

Cited by 21 publications

References 1 publication

TCP Cookie Transactions (TCPCT)

TCP Cookie Transactions (TCPCT)

DNS Transport over TCP - Implementation Requirements

Secure Domain Name System (DNS) deployment guide

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