Innovation Driven by Operational Experience and Engineering Insight Deters NXNS Attacks

DNS and security have had a long and tangled relationship. The DNS has always been an attractive target since it's a network leverage point. At DNS OARC 30 in Bangkok in 2019, Akamai's Ralf Weber did a presentation called DNS Security: Past, Present, and Future It's Not Easy covering numerous DNS...

DNS Encryption at DNS OARC 32

The DNS DNS Operations, Analysis, and Research Center DNS OARC is an organization that, in their own words, works to "improve the security, stability, and understanding of the Internet's DNS infrastructure." They hold regular workshops where deployment experts, software developers, researchers, a...

Root Servers Were Not Targets of 2015 DDoS Attack

When the Internet’s root name servers are in the line of fire of a DDoS attack, people start to sweat, and with good reason since they are the authoritative servers used to resolve IP addresses. The most recent attacks against the root servers happened over a two-day period starting last Nov. 30,...

Nmap NSE 6.01: dns-random-srcport

This VT has been deprecated and is therefore no longer functional. SPDX-FileCopyrightText: 2013 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Nmap NSE net: dns-random-srcport

Checks a DNS server for the predictable-port recursion vulnerability. Predictable source ports can make a DNS server vulnerable to cache poisoning attacks see CVE-2008-1447. The script works by querying porttest.dns-oarc.net see https://www.dns- oarc.net/oarc/services/porttest. Be aware that any...

Nmap NSE net: dns-random-txid

Checks a DNS server for the predictable-TXID DNS recursion vulnerability. Predictable TXID values can make a DNS server vulnerable to cache poisoning attacks see CVE-2008-1447. The script works by querying txidtest.dns-oarc.net see https://www.dns- oarc.net/oarc/services/txidtest. Be aware that a...