Pieter-Jan Nefkens
@pjnef.bsky.social
IT & network consultant, engineer, CiscoPress author, #ciscoChampion, cisco, network & security adept. Sadly also LongCovid :-(
crono care coach is now live in the apple app store.
Register your triggers and activities with points, score & color each day
An app (built by someone with longcovid) that helps you with #pacing and #energymanagement. Built for any #chronicillness such as #severeasthma #longcovid #mecfs
Register your triggers and activities with points, score & color each day
An app (built by someone with longcovid) that helps you with #pacing and #energymanagement. Built for any #chronicillness such as #severeasthma #longcovid #mecfs
December 22, 2025 at 9:21 AM
crono care coach is now live in the apple app store.
Register your triggers and activities with points, score & color each day
An app (built by someone with longcovid) that helps you with #pacing and #energymanagement. Built for any #chronicillness such as #severeasthma #longcovid #mecfs
Register your triggers and activities with points, score & color each day
An app (built by someone with longcovid) that helps you with #pacing and #energymanagement. Built for any #chronicillness such as #severeasthma #longcovid #mecfs
This share from a linkedIn post has a lot of meaning to me. An app that i have been working on for the past years that contains the things that helped me with #longcovid #severeasthma & #pacing is now live in the app store.
It helped me getting to where i am today.
www.linkedin.com/posts/pieter...
It helped me getting to where i am today.
www.linkedin.com/posts/pieter...
Take control of your chronic condition | Pieter-Jan Nefkens
The post I am writing today has a lot of meaning to me. I have completed one of my year ambitions and I am incredibly proud of the result. Because Apple has approved the App that I have created, calle...
www.linkedin.com
December 19, 2025 at 12:08 PM
This share from a linkedIn post has a lot of meaning to me. An app that i have been working on for the past years that contains the things that helped me with #longcovid #severeasthma & #pacing is now live in the app store.
It helped me getting to where i am today.
www.linkedin.com/posts/pieter...
It helped me getting to where i am today.
www.linkedin.com/posts/pieter...
It has been almost 3 years since i last saw this view. It will be mine for the coming 8 weeks of #severeasthma rehab in the swiss mountains. 🤞 for a good period to get back up on my feet and refind balance #longcovid
September 29, 2025 at 4:19 PM
It has been almost 3 years since i last saw this view. It will be mine for the coming 8 weeks of #severeasthma rehab in the swiss mountains. 🤞 for a good period to get back up on my feet and refind balance #longcovid
Reposted by Pieter-Jan Nefkens
🧬 The largest-ever ME/CFS biological study finds consistent blood abnormalities tied to inflammation, insulin resistance & liver dysfunction—not explained by inactivity.
🔬 Brings us closer to a diagnostic test.
📰 www.ed.ac.uk/news/scale-o...
📄 www.embopress.org/doi/full/10....
🔬 Brings us closer to a diagnostic test.
📰 www.ed.ac.uk/news/scale-o...
📄 www.embopress.org/doi/full/10....
Scale of how ME/CFS affects blood revealed
People with ME/CFS have significant differences in their blood compared with healthy individuals, a new study reveals, suggesting a path towards more reliable diagnosis of the long-term debilitating i...
www.ed.ac.uk
June 24, 2025 at 4:53 AM
🧬 The largest-ever ME/CFS biological study finds consistent blood abnormalities tied to inflammation, insulin resistance & liver dysfunction—not explained by inactivity.
🔬 Brings us closer to a diagnostic test.
📰 www.ed.ac.uk/news/scale-o...
📄 www.embopress.org/doi/full/10....
🔬 Brings us closer to a diagnostic test.
📰 www.ed.ac.uk/news/scale-o...
📄 www.embopress.org/doi/full/10....
Reposted by Pieter-Jan Nefkens
Hey #CiscoChampion folks, I've started a list for Cisco Champions(current and emeritus) and Champions-adjacent people (e.g., Tech Field Day, Cisco Champions Champions)
Ping me if you want to get added.
bsky.app/profile/did:...
Ping me if you want to get added.
bsky.app/profile/did:...
June 17, 2025 at 1:45 AM
Hey #CiscoChampion folks, I've started a list for Cisco Champions(current and emeritus) and Champions-adjacent people (e.g., Tech Field Day, Cisco Champions Champions)
Ping me if you want to get added.
bsky.app/profile/did:...
Ping me if you want to get added.
bsky.app/profile/did:...
Reposted by Pieter-Jan Nefkens
Mehrere Hundert Menschen bei ME/CFS #Liegenddemo in Leipzig. Betroffene haben Redebeiträge geschrieben, fordern Anerkennung, Unterstützung, Forschung. #longcovid #curemecfs
May 10, 2025 at 1:58 PM
Mehrere Hundert Menschen bei ME/CFS #Liegenddemo in Leipzig. Betroffene haben Redebeiträge geschrieben, fordern Anerkennung, Unterstützung, Forschung. #longcovid #curemecfs
Reposted by Pieter-Jan Nefkens
“Het is nu tijd voor een inhaalslag, voor biomedisch onderzoek, voor meer kennis van zaken. De overheid en universiteiten moeten daarom flink gaan investeren in onderzoek naar PAIS.”
#PAIS #MECVS #LongCovid
#PAIS #MECVS #LongCovid
May 10, 2025 at 2:24 PM
“Het is nu tijd voor een inhaalslag, voor biomedisch onderzoek, voor meer kennis van zaken. De overheid en universiteiten moeten daarom flink gaan investeren in onderzoek naar PAIS.”
#PAIS #MECVS #LongCovid
#PAIS #MECVS #LongCovid
Reposted by Pieter-Jan Nefkens
Important new research from the Netherlands:
Skeletal muscle properties in long COVID and ME/CFS differ from those induced by bed rest
www.medrxiv.org/content/10.1...
#LongCovid #MEcfs
Skeletal muscle properties in long COVID and ME/CFS differ from those induced by bed rest
www.medrxiv.org/content/10.1...
#LongCovid #MEcfs
May 6, 2025 at 5:07 PM
Important new research from the Netherlands:
Skeletal muscle properties in long COVID and ME/CFS differ from those induced by bed rest
www.medrxiv.org/content/10.1...
#LongCovid #MEcfs
Skeletal muscle properties in long COVID and ME/CFS differ from those induced by bed rest
www.medrxiv.org/content/10.1...
#LongCovid #MEcfs
Reposted by Pieter-Jan Nefkens
Hogg Networking Relaunches and Rebrands with Renewed Emphasis on Providing #IPv6 Training and Consulting Services
www.einpresswire.com/article/8059...
www.einpresswire.com/article/8059...
Hogg Networking Relaunches and Rebrands with Renewed Emphasis on Providing IPv6 Training and Consulting Services
Hogg Networking is proud to announce the re-launching of our company with a focus on providing large enterprises with IPv6 training and technical guidance.
www.einpresswire.com
April 24, 2025 at 1:10 PM
Hogg Networking Relaunches and Rebrands with Renewed Emphasis on Providing #IPv6 Training and Consulting Services
www.einpresswire.com/article/8059...
www.einpresswire.com/article/8059...
Living with a chronic illness is tough. Today 3 colleagues threw a retirement party. it was planned months ahead,it allowed me to pal around it and have enough room tomorrow to recover.And then the weather changed, triggering my asthma, so i had to cancel something i was looking forward to.
April 24, 2025 at 5:02 PM
Living with a chronic illness is tough. Today 3 colleagues threw a retirement party. it was planned months ahead,it allowed me to pal around it and have enough room tomorrow to recover.And then the weather changed, triggering my asthma, so i had to cancel something i was looking forward to.
Reposted by Pieter-Jan Nefkens
The @cisco.com Agile Services Networking looks to simplify the Networking Architecture for the Enterprise, what do think? @techfieldday.com #TFDx #CiscoLiveEMEA
February 11, 2025 at 12:21 PM
The @cisco.com Agile Services Networking looks to simplify the Networking Architecture for the Enterprise, what do think? @techfieldday.com #TFDx #CiscoLiveEMEA
Reposted by Pieter-Jan Nefkens
So we're almost going live with the first part of the @techfieldday.com @ciscoliveemea.bsky.social @cisco.com Go beyond is the first slide 🙂 See you live here: techfieldday.com/event/clemea... #CiscoLiveEMEA #TFDx
Tech Field Day on LinkedIn: Tech Field Day Extra at Cisco Live EMEA 2025
Tech Field Day Extra at Cisco Live EMEA 2025
www.linkedin.com
February 11, 2025 at 12:02 PM
So we're almost going live with the first part of the @techfieldday.com @ciscoliveemea.bsky.social @cisco.com Go beyond is the first slide 🙂 See you live here: techfieldday.com/event/clemea... #CiscoLiveEMEA #TFDx
Reposted by Pieter-Jan Nefkens
We may only be a few weeks into 2025 but we're ready to bring you more great content! We will once more be broadcasting live from Amsterdam as we kick off Tech Field Day Extra #TFDx at #CiscoLiveEMEA 2025. There are lots of exciting technology announcements that you're not going to want to miss.
February 5, 2025 at 5:05 PM
We may only be a few weeks into 2025 but we're ready to bring you more great content! We will once more be broadcasting live from Amsterdam as we kick off Tech Field Day Extra #TFDx at #CiscoLiveEMEA 2025. There are lots of exciting technology announcements that you're not going to want to miss.
In less then 10 minutes we'll be live with #TFDx at #CiscoLiveEMEA. Thunderbolt launch and directly afterwards Firewalling in the DC Switching, eg Smart Switches. Join us at the livestream:
techfieldday.com/event/clemea...
techfieldday.com/event/clemea...
Tech Field Day Extra at Cisco Live EMEA 2025 - Tech Field Day
techfieldday.com
February 11, 2025 at 11:57 AM
In less then 10 minutes we'll be live with #TFDx at #CiscoLiveEMEA. Thunderbolt launch and directly afterwards Firewalling in the DC Switching, eg Smart Switches. Join us at the livestream:
techfieldday.com/event/clemea...
techfieldday.com/event/clemea...
I am honored to be one of the delegates at TechFieldDay Extra. #TFDx at #CiscoLiveEMEA will start the livestream at 13:00 CET. Join me today on a number of very interesting hashtag#datacenter topics like: #Cisco SmartSwitches & Nexus HyperFabric
February 11, 2025 at 7:17 AM
I am honored to be one of the delegates at TechFieldDay Extra. #TFDx at #CiscoLiveEMEA will start the livestream at 13:00 CET. Join me today on a number of very interesting hashtag#datacenter topics like: #Cisco SmartSwitches & Nexus HyperFabric
Found a neat trick on iPhone that I just shared: nefkens.net/securing-app...
Securing app access on your iPhone - Pieter-Jan Nefkens
A short howto explaining how to put an extra layer of protection to any iOS app.
nefkens.net
February 3, 2025 at 8:25 PM
Found a neat trick on iPhone that I just shared: nefkens.net/securing-app...
Finally took the time to write the blog post on #DigitalSovereignty and #SovereignCloud , explaining the term, its concepts and models.
nefkens.net/sovereign-cl...
nefkens.net/sovereign-cl...
Digital Sovereignty/Sovereign cloud explained - Pieter-Jan Nefkens
Digital sovereignty or sovereign cloud are becoming buzzwords. In this post I'll explain what digital sovereignty and sovereign cloud is about.
nefkens.net
January 25, 2025 at 6:53 PM
Finally took the time to write the blog post on #DigitalSovereignty and #SovereignCloud , explaining the term, its concepts and models.
nefkens.net/sovereign-cl...
nefkens.net/sovereign-cl...
Honored that i have been invited for @techfieldday.com extra at #CLEUR . Looking forward to learn and write about it
January 13, 2025 at 8:07 PM
Honored that i have been invited for @techfieldday.com extra at #CLEUR . Looking forward to learn and write about it
Reposted by Pieter-Jan Nefkens
Have you heard about #mDNS? It's one of those protocols that go under the radar, but that can really wreak havoc on your network if you don't manage it.
While mainly used for consumer stuff, expect to see it in your network. It uses link local multicast so gets flooded at L2.
While mainly used for consumer stuff, expect to see it in your network. It uses link local multicast so gets flooded at L2.
January 13, 2025 at 7:55 AM
Have you heard about #mDNS? It's one of those protocols that go under the radar, but that can really wreak havoc on your network if you don't manage it.
While mainly used for consumer stuff, expect to see it in your network. It uses link local multicast so gets flooded at L2.
While mainly used for consumer stuff, expect to see it in your network. It uses link local multicast so gets flooded at L2.
Driving back to the ferry from a winter break resulted in beautiful pictures (and driving with -20 celcius)..
January 4, 2025 at 7:26 PM
Driving back to the ferry from a winter break resulted in beautiful pictures (and driving with -20 celcius)..
Happy holidays everyone!
snoopy is blowing a bell on christmas eve .
ALT: snoopy is blowing a bell on christmas eve .
media.tenor.com
December 24, 2024 at 6:26 PM
Happy holidays everyone!
I’m so much not a happy camper at the moment. Iphone said service of battery, made appointment, heard had to pay whilst apple support app said not (applecare) and spending the afternoon restoring from a wipe that wasnt necessary (and lost all signal chat along the way).
Never going back to amac
Never going back to amac
December 14, 2024 at 2:38 PM
I’m so much not a happy camper at the moment. Iphone said service of battery, made appointment, heard had to pay whilst apple support app said not (applecare) and spending the afternoon restoring from a wipe that wasnt necessary (and lost all signal chat along the way).
Never going back to amac
Never going back to amac
Reposted by Pieter-Jan Nefkens
Ok, it's time for another one of these "Swift concurrency step-by-step" posts.
It explores working with types that are not Sendable. All based around reading a model from some data store.
www.massicotte.org/step-by-step...
It explores working with types that are not Sendable. All based around reading a model from some data store.
www.massicotte.org/step-by-step...
Concurrency Step-by-Step: Reading from Storage
Not too long ago, I was re-reading an “introductory” post I wrote. Honestly, I could barely make it though. I guess a big part of that is that my own defintion of “introduction” when it comes to concu...
www.massicotte.org
November 30, 2024 at 12:25 PM
Ok, it's time for another one of these "Swift concurrency step-by-step" posts.
It explores working with types that are not Sendable. All based around reading a model from some data store.
www.massicotte.org/step-by-step...
It explores working with types that are not Sendable. All based around reading a model from some data store.
www.massicotte.org/step-by-step...
Reposted by Pieter-Jan Nefkens
Now that there’s a hobby desk in the living room where i can leave stuuf, i’ve been able to pickup my hobby a bit more. Planking the hull step by step.
November 22, 2024 at 6:22 PM
Now that there’s a hobby desk in the living room where i can leave stuuf, i’ve been able to pickup my hobby a bit more. Planking the hull step by step.