LPWAN: The Linchpin for IIoT
The industrial internet of things requires Low Power Wide Area Network technology.
Start Using OpenConfig with NAPALM on Software Gone Wild
OpenConfig sounds like a great idea, but unfortunately only a few vendors support it, and it doesn’t run on all their platforms, and you need the latest-and-greatest software release. Not exactly a set of conditions that would encourage widespread adoption.
Things might change with the OpenConfig data models supported in NAPALM. Imagine you could parse router configurations or show printouts into OpenConfig data structures, or use OpenConfig to configure Cisco IOS routers running a decade old software.
Read more ...Progressive Dutch Municipality Protects Citizen Data and Meets Compliance with VMware NSX
Summary: Municipality of Zoetermeer implements Zero-Trust model with VMware NSX-enabled micro-segmentation for advanced security inside data centers. Zoetermeer follows the Dutch BIG (Baseline Information Security Dutch Municipalities) regulations Zoetermeer is a modern, fast-growing municipality in the province of South Holland. It provides local services such as water supply, sewage and garbage disposal to around 125,000... Read more →
Progressive Dutch Municipality Protects Citizen Data and Meets Compliance with VMware NSX
Summary: Municipality of Zoetermeer implements Zero-Trust model with VMware NSX-enabled micro-segmentation for advanced security inside data centers. Zoetermeer follows the Dutch BIG (Baseline Information Security Dutch Municipalities) regulations
Zoetermeer is a modern, fast-growing municipality in the province of South Holland. It provides local services such as water supply, sewage and garbage disposal to around 125,000 residents. As a forward-thinking organization, the municipality of Zoetermeer recognizes that the increasing volume of cyber attacks against organizations today has shown that traditional, perimeter-centric security models are no longer effective.
The municipality responded by working with VMware partner ON2IT IT Services on a solution that wouldn’t treat everything inside the network as trusted. Zoetermeer deployed VMware NSX® network virtualization to facilitate a Zero Trust security model. This Zero Trust model is enabled by the unique micro-segmentation capabilities of VMware NSX. Zoetermeer is now compartmentalizing different segments of its network and applying automated, fine-grained security policies to individual applications.
“The municipality of Zoetermeer is committed to delivering digital services to our citizens, and also digital tools to enable the best experience for our employees,” said Mr. Van Gaalen, IT Manager, Municipality of Zoetermeer. “But security must remain paramount. Thanks to VMware, we can Continue reading
Technology Short Take #83
Welcome to Technology Short Take #83! This is a slightly shorter TST than usual, which might be a nice break from the typical information overload. In any case, enjoy!
Networking
- I enjoyed Dave McCrory’s series on the future of the network (see part 1, part 2, part 3, and part 4—part 5 hadn’t gone live yet when I published this). In my humble opinion, he’s spot on in his viewpoint that network equipment is increasingly becoming more like servers, so why not embed services and functions in the network equipment? However, this isn’t enough; you also need a strong control plane to help manage and coordinate these services. Perhaps Istio will help provide that control plane, though I suspect something more will be needed.
- Michael Kashin has a handy little tool that functions like
ssh-copy-idon servers, but for network devices (leveraging Netmiko). Check out the GitHub repository. - Anthony Shaw has a good comparison of Ansible, StackStorm, and Salt (with a particular view at applicability in a networking context). This one is definitely worth a read, in my opinion.
- Miguel Gómez of Telefónica Engineering discusses maximizing performance in VXLAN overlay networks.
- Nicolas Michel has a good Continue reading
Bastion Hosts and Custom SSH Configurations
The idea of an SSH bastion host is something I discussed here about 18 months ago. For the most part, it’s a pretty simple concept (yes, things can get quite complex in some situations, but I think these are largely corner cases). For the last few months, though, I’ve been trying to use an SSH bastion host and failing, and I could not figure out why it wouldn’t work. The answer, it turns out, lies in custom SSH configurations.
In my introduction on using SSH bastion hosts (linked above)—or in just about any tutorial out there on using SSH bastion hosts—brief mention is made of adding configuration information to SSH to use the bastion host. Borrowing from my original post, if you had an instance named “private1” that you wanted to access via a bastion named “bastion”, the SSH configuration information might look like this:
Host private1
IdentityFile ~/.ssh/rsa_private_key
ProxyCommand ssh user@bastion -W %h:%p
Host bastion
IdentityFile ~/.ssh/rsa_private_key
Normally, that information would go into ~/.ssh/config, which is the default SSH configuration file.
In my case, I only allow public key authentication to “trusted” systems (I vaguely recall an article I read a while ago about a Continue reading
Bastion Hosts and Custom SSH Configurations
The idea of an SSH bastion host is something I discussed here about 18 months ago. For the most part, it’s a pretty simple concept (yes, things can get quite complex in some situations, but I think these are largely corner cases). For the last few months, though, I’ve been trying to use an SSH bastion host and failing, and I could not figure out why it wouldn’t work. The answer, it turns out, lies in custom SSH configurations.
In my introduction on using SSH bastion hosts (linked above)—or in just about any tutorial out there on using SSH bastion hosts—brief mention is made of adding configuration information to SSH to use the bastion host. Borrowing from my original post, if you had an instance named “private1” that you wanted to access via a bastion named “bastion”, the SSH configuration information might look like this:
Host private1
IdentityFile ~/.ssh/rsa_private_key
ProxyCommand ssh user@bastion -W %h:%p
Host bastion
IdentityFile ~/.ssh/rsa_private_key
Normally, that information would go into ~/.ssh/config, which is the default SSH configuration file.
In my case, I only allow public key authentication to “trusted” systems (I vaguely recall an article I read a while ago about a Continue reading
Technology Short Take #83
Welcome to Technology Short Take #83! This is a slightly shorter TST than usual, which might be a nice break from the typical information overload. In any case, enjoy!
Networking
- I enjoyed Dave McCrory’s series on the future of the network (see part 1, part 2, part 3, and part 4—part 5 hadn’t gone live yet when I published this). In my humble opinion, he’s spot on in his viewpoint that network equipment is increasingly becoming more like servers, so why not embed services and functions in the network equipment? However, this isn’t enough; you also need a strong control plane to help manage and coordinate these services. Perhaps Istio will help provide that control plane, though I suspect something more will be needed.
- Michael Kashin has a handy little tool that functions like
ssh-copy-idon servers, but for network devices (leveraging Netmiko). Check out the GitHub repository. - Anthony Shaw has a good comparison of Ansible, StackStorm, and Salt (with a particular view at applicability in a networking context). This one is definitely worth a read, in my opinion.
- Miguel Gómez of Telefónica Engineering discusses maximizing performance in VXLAN overlay networks.
- Nicolas Michel has a good Continue reading
Bastion Hosts and Custom SSH Configurations
The idea of an SSH bastion host is something I discussed here about 18 months ago. For the most part, it’s a pretty simple concept (yes, things can get quite complex in some situations, but I think these are largely corner cases). For the last few months, though, I’ve been trying to use an SSH bastion host and failing, and I could not figure out why it wouldn’t work. The answer, it turns out, lies in custom SSH configurations.
In my introduction on using SSH bastion hosts (linked above)—or in just about any tutorial out there on using SSH bastion hosts—brief mention is made of adding configuration information to SSH to use the bastion host. Borrowing from my original post, if you had an instance named “private1” that you wanted to access via a bastion named “bastion”, the SSH configuration information might look like this:
Host private1
IdentityFile ~/.ssh/rsa_private_key
ProxyCommand ssh user@bastion -W %h:%p
Host bastion
IdentityFile ~/.ssh/rsa_private_key
Normally, that information would go into ~/.ssh/config, which is the default SSH configuration file.
In my case, I only allow public key authentication to “trusted” systems (I vaguely recall an article I read a while ago about a Continue reading
Technology Short Take #83
Welcome to Technology Short Take #83! This is a slightly shorter TST than usual, which might be a nice break from the typical information overload. In any case, enjoy!
Networking
- I enjoyed Dave McCrory’s series on the future of the network (see part 1, part 2, part 3, and part 4—part 5 hadn’t gone live yet when I published this). In my humble opinion, he’s spot on in his viewpoint that network equipment is increasingly becoming more like servers, so why not embed services and functions in the network equipment? However, this isn’t enough; you also need a strong control plane to help manage and coordinate these services. Perhaps Istio will help provide that control plane, though I suspect something more will be needed.
- Michael Kashin has a handy little tool that functions like
ssh-copy-idon servers, but for network devices (leveraging Netmiko). Check out the GitHub repository. - Anthony Shaw has a good comparison of Ansible, StackStorm, and Salt (with a particular view at applicability in a networking context). This one is definitely worth a read, in my opinion.
- Miguel Gómez of Telefónica Engineering discusses maximizing performance in VXLAN overlay networks.
- Nicolas Michel has a good Continue reading
Get involved with the Moby Project by attending upcoming Moby Summits!
Last month at DockerCon, we introduced the Moby Project: an open-source project sponsored by Docker to advance the software containerization movement. The idea behind the project is to help the ecosystem take containers mainstream by providing a library of components, a framework for assembling them into custom container-based systems and a place for all container enthusiasts to experiment and exchange ideas. Going forward, Docker will be assembled using Moby, see Moby and Docker or the diagram below for more details.
Moby Summit at DockerCon 2017
Knowing that that a good number of maintainers, contributors and advanced Docker users would be attending DockerCon, we decided to organize the first Moby Summit in collaboration with the Cloud Native Computing Foundation (CNCF). The summit was a small collaborative event for container hackers who are actively maintaining, contributing or generally involved or interested in the design and development of components of the Moby project library in particular: LinuxKit, containerd, Infrakit, SwarmKit, libnetwork and Notary.
Here’s what we covered during the first part of the summit:
- 0:05 – Opening words by Patrick Chanezon
- 9:05 – Moby Project Q&A with Solomon Hykes and Justin Cormack
- 60:14 – Quick update on containerd by Michael Continue reading
Sprint Builds its 5G Clout Through Open Source, NYU Affiliation
“We need network architects to think like software architects.”
Cloudera’s PaaS Targets Big Data Workloads Running in the Cloud
The service is available on AWS and will soon expand to other public clouds.
CCNA Wireless – CCNA Wireless Notes Chapter 2
ITU-R
A telecommunications regulatory body that regulates or decides how different parts of the RF spectrum may be used. Countries can also have own regulatory bodies that regulate the spectrum within the country. Maintains spectrum in three different regions:
Region 1: Europe, Africa, Northern Asia
Region 2: North and South America
Region 3: Southern Asia and Australiasa
Most bands in the RF spectrum are tightly regulated and require a license. Using a frequency in a licensed range requires an organization to submit an application to the regulatory body.
ITU-R allocated two two ranges for Industrial, Scientific and Medical (ISM) use:
2.400 to 2500 GHz
5.725 to 5.825 GHz
ISM bands are unlicensed and anyone can use them.
Unlicensed bands are more vulnerable to interference and noise due to them being more accessible.
FCC
Federal Communications Commission (FCC) regulates RF frequencies, channels and transmission power within the US but other countries may also follow the rules of the FCC. FCC has allocated Unlicensed National Information Infrastructure (U-NII) in addition to the ISM band. Consists of four bands in the 5 GHz band.
U-NII-1 5.15 to 5.25 GHz
U-NII-2 5.25 to 5.35 GHz
U-NII-2 Extended Continue reading