Network Namespaces: The New Access Layer
When considering containers and how they connect to the physical network, it may be easy to assume that this paradigm is identical to the connectivity model of virtual machines. However, the advent of container technology has really started to popularize some concepts and new terminology that you may not be familiar with, especially if you’re new to the way linux handles network resources.
What is a Namespace?
It’s important to understand this concept, because containers are NOT simply “miniature virtual machines”, and understanding namespaces is very important to conceptualizing the way a host will allocate various system resources for container workloads.
Generally, namespaces are a mechanism by which a Linux system can isolate and provide abstractions for system resources. These could be filesystem, process, or network resources, just to name a few.
The man page on linux namespaces goes into quite a bit of detail on the various types of namespaces. For instance, mount namespaces provide a mechanism to isolate the view that different processes have of the filesystem hierarchy. Process namespaces allow for process-level isolation, meaning that two processes in separate process namespaces can have the same PID. Network namespaces - the focus of this particular post - allow Continue reading
Network Namespaces: The New Access Layer
When considering containers and how they connect to the physical network, it may be easy to assume that this paradigm is identical to the connectivity model of virtual machines. However, the advent of container technology has really started to popularize some concepts and new terminology that you may not be familiar with, especially if you’re new to the way linux handles network resources. What is a Namespace? It’s important to understand this concept, because containers are NOT simply “miniature virtual machines”, and understanding namespaces is very important to conceptualizing the way a host will allocate various system resources for container workloads.Network Namespaces: The New Access Layer
When considering containers and how they connect to the physical network, it may be easy to assume that this paradigm is identical to the connectivity model of virtual machines. However, the advent of container technology has really started to popularize some concepts and new terminology that you may not be familiar with, especially if you’re new to the way linux handles network resources. What is a Namespace? It’s important to understand this concept, because containers are NOT simply “miniature virtual machines”, and understanding namespaces is very important to conceptualizing the way a host will allocate various system resources for container workloads.Where Oracle Cloud Competes With AWS
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The post Network Break 59: Dell’s Vision, HP Folds Public Cloud, HTTPS Advances appeared first on Packet Pushers.
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CCNA Security 210-260 IINS
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First thing, IINS 3.0 topics combine and adjust the current domains. Instead of covering nine domains (IINS 2.0), only seven domains are now included. This change was made to better reflect current job roles and job tasks typically performed by CCNA Security individuals. Note that although there are fewer domains, the exam remains the same length – it lasts for 90 minutes and contains 60-70 questions. This is because some new technologies were added and certain topic areas are now covered in more depth. The exam prerequisites did not change – you will not be able to obtain a valid CCNA Security Certificate until you already possess a valid CCENT or CCNA R&S, or any CCIE certificate.
In general, the new CCNA Security exam tests the candidate’s knowledge of secure network infrastructure, understanding core security concepts, managing secure access, VPN encryption, firewalls, Continue reading
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If you can’t make it to Tokyo, don’t worry, the talk will be recorded.
Watch out for this space for updates on the talk!
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