DNS request are usually cached, that’s good as it help to speeds up the lookups within the same host but sometimes we will want to clear the cache so it don’t hold the values that are no longer valid or we edited hosts file to block or redirect hosts or IP. To clear DNS cache in Mac OSX, we can do it with the help of Terminal. Mac OS X 10.11 El Capitan Open Terminal.app … [Read more...] about How To Clear DNS Cache In Mac OSX 10.11 El Capitan
Search Results for: clear dns cache os x
How to Clear DNS Cache with discoveryutil in Mac OS X Yosemite
A lot of OS X Yosemite users are complaining that dscacheutil is not helping with clearing DNS cache. Here is quick guide to try with discoveryutil. To completely clear all DNS caches in OS X Yosemite, target both MDNS (Multicast DNS) and UDNS (Unicast DNS) with two different commands. Step 1. Open Terminal.app Step 2. Insert this command to terminal to Clear … [Read more...] about How to Clear DNS Cache with discoveryutil in Mac OS X Yosemite
How To Clear DNS Cache In Mac OSX 10.10 Yosemite
DNS request are usually cached, that’s good as it help to speeds up the lookups within the same host but sometimes we will want to clear the cache so it don’t hold the values that are no longer valid or we edited hosts file to block or redirect hosts or IP. To clear DNS cache in Mac OSX, we can do it with the help of Terminal. Mac OSX 10.10 Open Terminal.app and type … [Read more...] about How To Clear DNS Cache In Mac OSX 10.10 Yosemite
How To Clear DNS Cache In Mac OSX 10.9 Mavericks
DNS request are usually cached, that’s good as it help to speeds up the lookups within the same host but sometimes we will want to clear the cache so it don’t hold the values that are no longer valid or we edited hosts file to block or redirect hosts or IP. To clear DNS cache in Mac OSX, we can do it with the help of Terminal. Mac OSX 10.9 Open up the application called … [Read more...] about How To Clear DNS Cache In Mac OSX 10.9 Mavericks
How To Clear DNS Cache In Mac OSX
DNS request are usually cached, that’s good as it help to speeds up the lookups within the same host but sometimes we will want to clear the cache so it don’t hold the values that are no longer valid. To clear DNS cache in Mac OSX, we can do it with the help of Terminal. Mac OSX 10.4 And Below Open up the application called "Terminal" lookupd -flushcache Mac OSX 10.5 And … [Read more...] about How To Clear DNS Cache In Mac OSX
China-Linked ‘Muddling Meerkat’ Hijacks DNS to Map Internet on Global Scale
A previously undocumented cyber threat dubbed Muddling Meerkat has been observed undertaking sophisticated domain name system (DNS) activities in a likely effort to evade security measures and conduct reconnaissance of networks across the world since October 2019. Cloud security firm Infoblox described the threat actor as likely affiliated with the People's Republic of China … [Read more...] about China-Linked ‘Muddling Meerkat’ Hijacks DNS to Map Internet on Global Scale
DDoS Botnets Hijacking Zyxel Devices to Launch Devastating Attacks
Jul 21, 2023THNVulnerability / Botnet Several distributed denial-of-service (DDoS) botnets have been observed exploiting a critical flaw in Zyxel devices that came to light in April 2023 to gain remote control of vulnerable systems. "Through the capture of exploit traffic, the attacker's IP address was identified, and it was determined that the attacks were occurring in … [Read more...] about DDoS Botnets Hijacking Zyxel Devices to Launch Devastating Attacks
ISC Releases Security Patches for New BIND DNS Software Vulnerabilities
Jan 28, 2023Ravie LakshmananServer Security / DNS The Internet Systems Consortium (ISC) has released patches to address multiple security vulnerabilities in the Berkeley Internet Name Domain (BIND) 9 Domain Name System (DNS) software suite that could lead to a denial-of-service (DoS) condition. "A remote attacker could exploit these vulnerabilities to potentially cause … [Read more...] about ISC Releases Security Patches for New BIND DNS Software Vulnerabilities
Roaming Mantis Spreading Mobile Malware That Hijacks Wi-Fi Routers’ DNS Settings
Jan 20, 2023Ravie LakshmananNetwork Security / Mobile Hacking Threat actors associated with the Roaming Mantis attack campaign have been observed delivering an updated variant of their patent mobile malware known as Wroba to infiltrate Wi-Fi routers and undertake Domain Name System (DNS) hijacking. Kaspersky, which carried out an analysis of the malicious artifact, said the … [Read more...] about Roaming Mantis Spreading Mobile Malware That Hijacks Wi-Fi Routers’ DNS Settings
New “B1txor20” Linux Botnet Uses DNS Tunnel and Exploits Log4J Flaw
A previously undocumented backdoor has been observed targeting Linux systems with the goal of corralling the machines into a botnet and acting as a conduit for downloading and installing rootkits. Qihoo 360's Netlab security team called it B1txor20 "based on its propagation using the file name 'b1t,' the XOR encryption algorithm, and the RC4 algorithm key length of 20 … [Read more...] about New “B1txor20” Linux Botnet Uses DNS Tunnel and Exploits Log4J Flaw