Zivaro Blog / Network Security

Any network administrator worth his/her salt knows to change the default password on a router during its initial configuration, or you leave your network open to outside attack. Fortunately, these …

Human nature makes us curious to know where we are located within the World Wide Web. We are also curious about where within the global Internet the person we are …

As you have probably seen, there has been much in the news lately about the EXTRABACON exploit released by a group of hackers called the Shadow Brokers, who supposedly acquired …

Security has always been a driving principle at Cisco Systems. From the introduction of the Pix to the ASA (Adaptive Security Appliance), Cisco has been at the forefront of the …

Splunk .conf2014 was a massive and exciting gathering of Splunk users, customers, and partners that offered a diverse opportunity for everyone to learn about some of the most unique use …

When a dual-protocol host joins a network, it sends an ICMPv6 (type 133) Router Solicitation (RS) message to inquire about the local IPv6-capable router on the network. The local router …

The Domain Name System (DNS) has been the target of many types of attacks in recent years. Authoritative DNS servers are exposed to the Internet and generally allow queries from …