Five commands that end DNS guesswork for good.

Jack Wallen shows you how to flush the DNS cache on your Ubuntu Servers to avoid DNS-released networking issues. Sometimes a network connection doesn’t seem to function how we expect them to. And it ...

Nearly a month after a critical flaw in the Internet’s Domain Name System was first reported, vendors of some of the most widely used firewall software are scrambling to fix a problem that can ...

Security experts have disclosed today details about seven vulnerabilities impacting a popular DNS software package that is commonly deployed in networking equipment, such as routers and access points.

I have an odd DNS problem on one of my Windows 10 machines. Most time DNS times out and I can't load any web pages as a result. Pinging a domain times out. NSLOOKUP is instant. Hosts file is default.

During the past few weeks we have been hearing more about a severe DNS cache poisoning vulnerability that threatens to become a major problem if it's not promptly dealt with. A lot of interesting ...

Since 2010, Juliana has been a professional writer in the technology and small business worlds. She has both journalism and copywriting experience and is exceptional at distilling complex concepts ...

Nearly a month after a critical flaw in the Internet’s Domain Name System was first reported, vendors of some of the most widely used firewall software packages are scrambling to fix a problem that ...

Some firewall software undoes a feature that was introduced in the DNS patches and could make it easier for attackers to pull off a cache-poisoning attack against the DNS server Nearly a month after a ...