When your organization is inevitably hit by a cyberattack, you want your security operations engineers to move lightning fast to identify the scope, duration, and impact of the attack, contain the disruption and prevent any costly or lasting damage. To do that, they need access to actionable information about everything that’s in your network — where devices are located, how they interact, and all the relevant details about their configuration and state.
Network traffic analysis is the routine task of various job roles, such as network administrator, network defenders, incident responders and others. Wireshark plays a vital role during the traffic analysis; it comes pre-installed in many Linux OS’s, for instance, Kali. otherwise, it is available to download from the official website. This article covers the traffic analysis of the most common network protocols, for example, ICMP, ARP, HTTPS, TCP, etc.
I recently published a piece in Dark Reading covering the network security challenges of M&A activity. As we ease the restrictions put in place to combat COVID-19, we’re expecting to see business activity including M&A pick up speed, it’s important that the implications of integrating networks are fully understood to ensure that the expected business benefits are achieved as soon as possible.
Network segmentation is almost as old as computer networking. The evolution of network segmentation went through switches to routers and firewalls, and as modern networks evolved, the ability to better control traffic by operating system native functionality evolved as well. Native controls like IP Tables became lingua franca, alongside access control lists, process isolations, and more. Native controls are not a new concept.
Co-authored by James Robinson and Jeff Kessler As rapidly as wide-area networking (WAN) and remote access strategies with associated technologies are changing, we’re always surprised by the amount of time some security professionals and auditors dedicate to the either/or debate between split tunnel and full tunnel connectivity.
The events of 2020 helped to accelerate the convergence between information technology (IT) and operational technology (OT) for many organizations. As reported by Help Net Security, for instance, two-thirds of IT and OT security professionals said in a 2020 survey that their IT and OT networks had become more interconnected in the wake of the pandemic.
