For anyone interested in my “Scalable and Secure Self-Serve RouterOS Remote Management” presentation at the MikroTik Professionals Conference in Prague, the slide deck, #Docker, and #ContainerLab files can be found here. github.com/ghostinthene... #MTPC #NetEng
SALE TIME! Our posters on our Etsy shop are 10% off - including our laugh-incuding vintage collection! Brighten up your workspace!
>> nerdshizzle.etsy.com?section_id=3...
#techsupport #ITSupport #ITHelpdesk #ITProfessionals #SysAdmin #NetENG #infosec #TechArt
I'm here at #Grafana 's #ObservabilityCon in Toronto. Observability is key for #NetEng folks, so I'm happy to network & learn more.
OSPF rarely breaks randomly.
It exposes MTU mismatches, bad links, or forgotten configs.
Here’s a real-world guide to troubleshooting OSPF like an architect — practical, no slides.
bit.ly/3OUNcgk
#networking #OSPF #neteng #routing
OSPF gets a lot simpler after your first real outage.
Design lessons from the field:
protect Area 0, summarize early, respect redistribution.
Built from scars, not theory.
bit.ly/4cGMw8d
#OSPF #NetEng #Networking #Routing
Two coffees later it dawned on me that I was pinging from the device anchoring the pseudowire, so IPv6 was fragmenting at source. A packet capture showed the fragmentation headers •and• the missing MRRU attribute in the L2TPv3 pseudowire setup. Should have started there. #NetEng #ThereAreDays 2/2
Word of the day: Assiduity n. great care and attention to detail. A required quality of networking practitioners engaged in labbing. If we don't know all of the details of how a thing works, we don't •really• know how it works at all. #NetEng
OSPF has a reputation for being complex, but most of that comes from learning it backwards. This post is a practical intro to what OSPF actually is, how it works, and why architects still trust it in real networks.
bit.ly/3ZGll5R
#networking #OSPF #NetEng #Routing #NetworkEngineering
OSPF neighbor formation isn’t just a diagram — it’s a journey.
From the first Hello to Full adjacency, and the real-world lessons in between.
bit.ly/4687c5g
#Networking #OSPF #NetEng
We're at APRICOT 2026 in Jakarta!
Our Head of Marketing, Outi Maria Pietilänahο, will be there Feb 9–11. Network ops folks, if you want to talk DDoS defense, flow-based detection, or just geek out about packet rates vs bandwidth, come say hi!
#APRICOT2026 #NetEng
Just wrapped NANOG 96 in SF! 🌉
800+ network operators ✅
Pavel's FastNetMon Community presentation ✅
Epic treasure hunt & Beer n' Gear moments ✅
Read the full recap & grab the slides 👇
fastnetmon.com/2026/02/06/n...
#NANOG96 #NetEng #DDoS
The trace is consistent: ✅ 1492B Payload = PASS ❌ 1493B Payload = DROP
Because it returns zero "Packet Too Big" errors, clients loop forever (RFC4890 violation).
I'm thinking of forcing RA MTU to 1280 to stop local fragmentation entirely. Thoughts? #IPv6 #NetEng
The trace is consistent: ✅ 1492B Payload = PASS ❌ 1493B Payload = DROP
Because it returns zero "Packet Too Big" errors, clients loop forever (RFC4890 violation).
I'm thinking of forcing RA MTU to 1280 to stop local fragmentation entirely. Thoughts? #IPv6 #NetEng
I was a proud CLI lifer. Automation? That was for devs.
Then I got laid off, and every job required automation skills.
This is the story of what it took to change my mind, rebuild my career, and unlearn the stories that held me back.
youtu.be/tUPUlLKLrKU?...
#NetworkAutomation #AutoCon4 #NetEng
👀 WIP project
I’m building a network design wizard that helps you plan a new location from scratch.
Would you be interested in a tool like this?
👍 Yes / 👎 No / 💡 Depends (tell me why)
#networking #homelab #sysadmin #neteng #opensource
A silly excuse used to avoid #IPv6: The addresses are too hard to remember. Here’s a thought: Maybe if the addresses are •really• hard to remember, folks will stop configuring them directly into client configurations and we won’t have to go finding broken stuff when the service moves. #Grr #NetEng
It’s a bit ironic that so many Zero Trust Network Access solutions require that we trust a vendor to run it for us. I’m guessing the terms involve a liability-limiting service agreement too. 🤔 #ZTNA #InfoSec #NetEng
Tried running #containerlab inside of an LXC container for funsies. It did •not• go well. I think I’ll go back to serious work now. #HeChosePoorly #NetEng #clab #lab
No turkey and stuffing for me, but containers and VMs? Sure. Let's make #MikroTik #CHR images a bit friendlier for declarative #containerlab use. #RouterOS #NetEng #vrnetlab ghostinthenet.info/chr-in-conta...
I didn't •mean• to do it, but while going down rabbit holes this week I switched from EVE-NG to #ContainerLab. Took a bit to get the SSH keys and jumps working, but they work. #EdgeShark is amazing, though I had rebuild cshargextcap to properly support mDNS. Write-up will be forthcoming. #NetEng
The secret to passing Cisco 300-415 ENSDWI?
👉 Practice tests. Every. Single. Time.
They expose weak spots, boost accuracy, and make exam pressure feel normal.
Full guide 🔗: www.linkedin.com/pulse/why-pr...
#ENSDWI #Cisco #SDWAN #NetEng #CiscoPrep
In network architecture, we desperately try to avoid shared fate when building resilient designs. The application architectures that rely exclusively Cloudflare or (a couple of weeks ago) AWS US East don’t appear to have made the same efforts. #NetEng #SharedFate #Down #Outage
There’s always another 🕳️ to go down. Now it’s a packet-level analysis of raw L2TPv3 pseudowires vs UDP encapsulated ones to find out •why• the raw ones come in with a lower automatic MTU than the UDP ones do. On the surface, this makes no sense. #NetEng #Labbing #L2TP #MTU #TunnelsAllTheWayDown
Proof of concept lab complete (RFC 1925 Truth 1 has been satisfied) and my MikroTik Professionals’ Conference presentation request has been submitted. Now to start working on the actual presentation in case they actually say yes. #MTPC #MikroTik #NetEng
The “Simplicity where possible. Complexity where necessary.” mantra applies long before we get to the design stage. 2/2 #NetEng #Labbing #RabbitHole #KISS
Reading articles like www.proxylity.com/articles/udp-is-a-conver... frustrate me as you are assuming you have a reliable connection. I do not. My ISP drops/reorders packets all the time, WiFi makes it even worse. "Just build a TCP light on top of UDP" isn't an answer. Yes the […]
Discovering that something is a DNS problem rather than a network problem feels good… until we learn to accept the fact that DNS is a fundamental network service. If it’s DNS, it’s the network. The real joy comes from it not being •my• network’s DNS that’s at fault. #NetEng #DNS
After two weeks of banging my head against this multicast routing lab, I finally found the problem. The default TTL for •all• multicast packets on Linux is 1. Of course, I overlooked the simple stuff in my troubleshooting, as one does. #NetEng #Multicast #Troubleshooting #LessonLearned #ThereAreDays
