Since humans are prone to making mistakes, cloud security posture management companies have become...
Linux is becoming more and more prominent in the networking industry. Many of us come from a mixed background and have varying levels of knowledge of Linux. I’ve been around Linux for a long time but really never got beyond the very most basic stuff. Looking back, I wish I had spent some more time learning Sed, Awk, regex, and Bash etc. I was doing some labs over at NRE Labs (great labs), and wanted to highlight some of the things I learned.
Sometimes you want to append something quickly to a file or send several lines of text to a Linux command. That can be done using “here documents“.
First, look at this small configuration:
daniel@devasc:~/DevAsc$ cat config.txt interface GigabitEthernet0/1 switchport mode access switchport access vlan 10 ! interface GigabitEthernet0/2 switchport mode access switchport access vlan 10 ! interface GigabitEthernet0/3 switchport mode access switchport access vlan 10 !
Now we want to append another interface to the end of this file. We can do that using cat:
daniel@devasc:~/DevAsc$ cat <<EOT >> config.txt > interface GigabitEthernet0/4 > switchport mode access > switchport access vlan 10 > ! > EOT
After the cat command, Continue reading
“It’s natural that the security factors become critical because now they're suddenly very large...
At the end of last year, we introduced Standalone Health Checks - a service that lets you monitor the health of your origin servers and avoid the need to purchase additional third party services. The more that can be controlled from Cloudflare decreases maintenance cost, vendor management, and infrastructure complexity. This is important as it ensures you are able to scale your infrastructure seamlessly as your company grows. Today, we are introducing Standalone Health Check Analytics to help decrease your time to resolution for any potential issues. You can find Health Check Analytics in the sub-menu under the Traffic tab in your Cloudflare Dashboard.
As a refresher, Standalone Health Checks is a service that monitors an IP address or hostname for your origin servers or application and notifies you in near real-time if there happens to be a problem. These Health Checks support fine-tuned configurations based on expected codes, interval, protocols, timeout and more. These configurations enable you to properly target your checks based on the unique setup of your infrastructure. An example of a Health Check can be seen below which is monitoring an origin server in a staging environment with a notification set via email.
Once you set Continue reading
First posted in Human Infrastructure Magazine in April 2020 – a free email newsletter from the Packet Pushers. Subscribe here. How does business operate when the pandemic lockdown ‘ends’ and how does it impact you ? COVID19 won’t be gone, its gonna be months before a new ‘normal’ emerges. Getting back to work means close […]
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In early May 2020 I wrote a blog post introducing SuzieQ, a network observability platform Dinesh Dutt worked on for the last few years. If that blog post made you look for more details, you might like the Episode 111 of Software Gone Wild in which we went deeper and covered these topics:
What is Lateral Movement?
Lateral movement refers to the techniques that a cyber-attacker uses, after gaining initial access, to move deeper into a network in search of sensitive data and other high-value assets. Lateral movement techniques are widely used in sophisticated cyber-attacks such as advanced persistent threats (APTs). An adversary uses these techniques to access other hosts from a compromised system and get access to sensitive resources, such as mail systems, shared folders, and legitimate credentials, ultimately gaining access to the identified target. Lateral movement techniques enable a threat actor to avoid detection and retain access over an extended dwell time of weeks, or even months, after the initial breach.
What are the Stages of Lateral Movement?
There are three primary stages of lateral movement: reconnaissance, credential/privilege gathering, and gaining access to other resources in the network.
How Does an Adversary Gain Unauthorized Access to a Kubernetes Cluster?
In a Kubernetes cluster, an attacker will gain initial access by compromising a pod. Once the pod is compromised, there are three main areas where the attacker can begin reconnaissance and move through the lateral movement stages to learn more about the cluster: the cloud provider metadata service, the pod networking and Continue reading
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When joining a development team, it takes some time to become productive. This is usually a combination of learning the code base and getting your environment setup. Often there will be an onboarding document of some sort for setting up your environment but in my experience, this is never up to date and you always have to ask someone for help with what tools are needed.
This problem continues as you spend more time in the team. You’ll find issues because the version of the tool you’re using is different to that used by someone on your team, or, worse, the CI. I’ve been on more than one team where “works on my machine” has been exclaimed or written in all caps on Slack and I’ve spent a lot of time debugging things on the CI which is incredibly painful.
Many people use Docker as a way to run application dependencies, like databases, while they’re developing locally and for containerizing their production applications. Docker is also a great tool for defining your development environment in code to ensure that your team members and the CI are all using the same set of tools.
We do a lot of Go development Continue reading
“We’ve advocated that governments should put in place stronger regulations to govern the...