I have a very weird issue with my #tailscale + #mumble server setup:

I have a murmur (mumble) server that binds to the tailscale interface on my server.

I have shared that endpoint with a friend and we're both connecting via tailscale to that mumble server to talk.

Every few minutes (3, 5, something like that), one of us gets reconnected. Mumble (client) says "Server failed to respond to TCP ping". On the server it says (murmur log): "Connection closed: The remote host closed the connection".

The tailscale log on the server says something like "adding connection to derp-* for ..." at that very moment of reconnecting.

How to debug this issue? I don't even know where to start. It looks like (to me, as a networking noob) that tailscale reconfigures connections and breaks the mumble connection.

#followerpower #linuxadmin #NetworkEngineering #networking #sysadmin

CC @tailscale

Please boost

Just completed the “Managing Cisco Network Operating Systems” course via the free #CiscoRevUp program! Covered Catalyst, IOS-XE, NX-OS & IOS-XR — great insights into how #NetworkEngineering is evolving into a more #SoftwareDefined future.

Stay tuned for: #CCNA & #Cybersecurity Associate re-certifications.

The Wireshark Certified Analyst certification has been available for just over a month and professionals have already started leveraging it to validate and elevate their packet analysis skills.

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If you’ve been mastering packet captures and troubleshooting in the field, earning the WCA is a powerful way to showcase your expertise and stand out professionally.

Find all the details, objectives, and registration info here: https://wireshark.org/certifications

Ready to level up your packet analysis game? At SharkFest’25 EUROPE in Warsaw, you'll have the unique opportunity to learn Wireshark and Stratoshark from experts who build and use them every day.

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SASE platforms that rely on MiTM ALL of your network traffic degrade your network security because all of your engineers have to either write code to get around it or disable ALL certificate validation in their code that accesses remote resources.

Also from what I know, when they "whitelist" a remote resource to allow internal clients to access something its just checking a box that says don't validate SSL for this particular remote resource.

I'm open to being wrong here, but I feel like products that break native certificate validation are bad.

Dive deep into the heart of #TCP with @packetjay at SharkFest'25 Europe!

Join the TCP Analysis Masterclass and learn how to dissect, diagnose, and master complex TCP behaviors from one of the best in the field. Whether you're chasing lost packets or tuning performance, this class is for you.

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Join us in Poland this November!

Start your week off right with Pre-Conference Class I: Essential Wireshark Skills: Practical Packet Analysis led by network pro Ross Bagurdes. Whether you're new to Wireshark or brushing up your skills, this hands-on class will get you up to speed on capturing, analyzing, and filtering traffic with clarity and confidence.

Learn more + register: https://sharkfest.wireshark.org/sfeu

Join us for Wireshark Education Day in Paris, France on September 9, 2025 for a full day of hands-on learning, expert talks, and packet analysis insights.

Dive into topics like capture points, VoIP analysis, security, and real-world troubleshooting, with sessions led by Wireshark experts including Alexis La Goutte, Michel ROUSSEAU, Jean-Paul ARCHIER, and Roland Knall.

- Campus Cyber, Paris
- September 9, 2025
- Sponsored by: Profitap

Register here now: https://ticketing.wireshark.org/wsug/wsugfr25/

Today is the last day of SharkFest’25 US, and we’re proud to celebrate the incredible women who are shaping the future of network analysis and cybersecurity.

Thank you for being a powerful part of this community!

The SharkFest’25 US Opening Keynote from Gerald Combs is now live on YouTube!

Whether you missed it in Richmond or want to rewatch — now’s your chance: https://youtu.be/Go2xu0S4StU

Final call: this is your last chance to register for SharkFest’25 US!

Join Wireshark creator @geraldcombs, internet legend Vint Cerf, and a global community of network engineers, analysts, and educators for the ultimate deep dive into packets and protocols.

Register now: https://sharkfest.wireshark.org/sfus

New SharkBytes Podcast Episode!

Wireshark creator @geraldcombs chats with Chris Greer & Ross Bagurdes about the brand new Wireshark Certified Analyst (WCA) exam.

Learn how it was built, who it's for, and how it can boost your network analysis skills.

Watch: https://www.youtube.com/watch?v=ebEMH60BdZs
Listen: https://sharkbytes.transistor.fm/
Get certified: https://www.wireshark.org/certifications

Throwing more wifi into the mix because I want to extend the core network into the rest of the house.

Both the current rack in the office and the new core rack in the living room will however benefit from a new UPS each.

Want to get hands-on with our new tool Stratoshark for analyzing system calls and cloud logs?

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New Kid on the Block: Stratoshark – Explore what Stratoshark is, how it works, and why it matters
Using sysdig and Stratoshark to examine system internals – real life troubleshooting with Stratoshark

Meet the minds behind the tool & see where network analysis is headed next.

Register now: https://sharkfest.wireshark.org/sfus/

Network engineers -- Do you know what 802.1X and/or AAA is?

Help me settle a debate with this completely unscientific poll.

But, I have done something that is super cool and I have nobody to share it with, and nothing to show for it besides some passing tests.

https://github.com/zeyus/liblsl.dart/blob/main/packages/liblsl/ (readme is outdated, see tests)

HMU if you're a #softwareengineering , #networkengineering , #systemsarchitecture or #designpattern nerd, I'd love feedback and suggestions for improvement (or just question my sanity)

Today, I am running IPv6 on my home network and I’m not having problems, just like every day for the past fifteen years. It’s not hard.

Looking for a way to connect with peers and improve your network connectivity? #PeeringDB has got you covered!

This platform provides in-depth information on networks, IXPs, and facilities, making the interconnecting process an easy breeze.

Check it out: https://buff.ly/4aqNQsW

I don't think #NetworkEngineering is that popular on Mastodon, but I'm posting here anyway. I'm starting a local meetup here in #Toronto for Network Operators. A small NOG, in the vein of #NANOG

Feel free to join us -- for FREE -- in April

https://tornog.ca