Sake Blok
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syn-bit.nl
Sake Blok
@syn-bit.nl
Relational therapist for computer systems with a passion for Network Analysis, Protocol Analysis, bug chasing and problem solving. (he/him)
The past two days there were pre-conference classes, but we’re now officially started. Hello Warsaw, here is #sf25eu
November 5, 2025 at 8:12 AM
Ready for my first #NLNOG day, which will start any minute now (after a non-network technical issue )
September 30, 2025 at 7:37 AM
Reposted by Sake Blok
The SharkFest Women in Tech Scholarship helps make it possible for women to attend SharkFest’25 Europe in Warsaw this November. Connect with industry experts, learn hands-on skills, and become part of the Wireshark community!

Learn more: sharkfest.wireshark.org/sfeu/women-i...

#WomenInTech #sf25eu
August 15, 2025 at 11:03 AM
Reposted by Sake Blok
One of the most important and powerful things any kid can do to make a better world is if they see someone being pushed around, stand up for them.

Alexandria Ocasio-Cortez
July 29, 2025 at 4:39 PM
Yay, tickets in the pocket for a great event in my hometown (Haarlem). Unfortunately I will only be able to attend 1 day (and possibly half of the second day).

Will I see you there?
⚠️ Ticket prices rise on August 1 ⚠️

If you’re waiting for a sign from the universe… this is it.

🎟️ wiccon.nl/tickets-2025

Grab yours before the fog rolls in.

#WICCON2025 #WomenInCybersecurity #SpookyDeal #BuyNowOrCryLater #infosec
July 25, 2025 at 7:34 AM
And even if it *was* pie, equal rights benefit everyone!
July 6, 2025 at 1:48 PM
He has a good point!
June 11, 2025 at 6:45 PM
After hard work, the official Wireshark Certified Analyst certification has been launched! Go get your #Wireshark analysis skills tested and certified!
The Wireshark Foundation proudly announces the official Wireshark Certified Analyst (WCA) certification! The WCA is designed so you stand out as a technical engineering powerhouse in the crowded field of IT Professionals.

Learn more: www.wireshark.org/blog/2025-06...

#Wireshark #WCA
June 2, 2025 at 4:39 PM
Reposted by Sake Blok
Wow: after 15 years, YouTube has taken down the original 'Rick Roll' video due to a "licensing issue," likely due to the acquisition of Astley's record lable.

The metadata remains, but if you click through it goes to 'video not found':

www.youtube.com/watch?v=dQw4...
Rick Astley - Never Gonna Give You Up (Official Music Video)
YouTube video by Rick Astley
www.youtube.com
May 19, 2025 at 6:45 PM
For those who like to learn to use #linux, learning (and experimenting with) these commands are a great starting point!
every core unix command I use
April 16, 2025 at 6:45 PM
Yay! My Stratoshark talk for the #NLUUG spring conference on May 22nd in Utrecht has been accepted.

Looking forward to see you there for an introduction to #Stratoshark and how it can be to system calls what #Wireshark is to network packets.

See: nluug.nl/evenementen/...
March 14, 2025 at 1:37 PM
Does anyone have a "stricken #Chromecast" and is able to create a #pcap of some failing communication? I'd be interested to look at the packets and use them in my "Troubleshooting #TLS with #Wireshark" classes :-)

Sharing is appreciated!
March 13, 2025 at 7:57 PM
Reposted by Sake Blok
The SharkFest Women in Tech Scholarship is open! This provides women interested in networking, cybersecurity & IT the opportunity to attend SharkFest’25 US, gain hands-on Wireshark training & connect with industry experts

Apply now: sharkfest.wireshark.org/sfus/women-i...

#WomenInTech #Wireshark
February 24, 2025 at 10:58 PM
Ever wondered why we use certificates and what makes them work. Or need to troubleshoot failing #TLS handshakes? What about decrypting TLS traffic in #wireshark?

If so, I look forward to having you in my pre-conference class @ #SF25US
Struggling with SSL/TLS troubleshooting?

Learn to analyze encrypted traffic, decode certificates & diagnose #TLS issues with #Wireshark in SSL/TLS Troubleshooting with Wireshark, a class by @syn-bit.nl on 6/16. Gain skills to keep secure communications running smoothly

sharkfest.wireshark.org/sfus
February 23, 2025 at 8:32 PM
Reposted by Sake Blok
Not a big leap from this to: “The U.S. is discussing the possibility of cutting EU countries’ access to M365 if Brussels doesn’t agree to [insane Trump demand].”

Still think this is some extremely-unlikely, fringe hypothetical?
February 22, 2025 at 12:05 PM
Packetheads in NL, on March 6th the 4th Wireshark Users NL Meetup will take place in The Hague. Topics will be:

- Decrypting #TLS in #Wireshark with TLS session keys (and how to obtain those keys)
- Introduction to #Stratoshark

RSVP @ www.meetup.com/wireshark-us...
Wireshark Users NL - Meetup #4, Thu, Mar 6, 2025, 5:30 PM | Meetup
Please join us for the fourth (yearly?) Wireshark Users NL get together. This evening will take place at the SSC-ICT office in The Hague. Food and drinks will be provided b
www.meetup.com
February 12, 2025 at 10:30 PM
I'll be heading out to #FOSDEM tomorrow, come say Hi at the #wireshark stand in building H where we have free stickers and T-shirts to buy (which will sponsor the foundation).

And you can learn about #wireshark and #stratoshark
We're headed to @fosdem.bsky.social in Brussels! Join us as #Wireshark & #Stratoshark creator @geraldcombs.bsky.social presents two sessions:

Stratoshark: Applying the Power of Wireshark to System Calls & Logs

Wiresharchaeology: How it Started & Where We're Headed

fosdem.org/2025/schedul...
January 30, 2025 at 5:46 AM
Looking forward to #Sharkfest '25 US!

I'll be teaching a #TLS troubleshooting with #Wireshark pre-conference class and will host an escape-room in a #pcap file competition again.

And there is the keynote of Vint Cerf, how cool is that!

Hope to see you all in Richmond!
We're excited to announce that Vint Cerf will be joining us at SharkFest'25 US!

He'll be giving a keynote on June 18th titled: "The Good, the Bad, the Ugly: Internet from 2025 on...".

Join us this June: sharkfest.wireshark.org/sfus

#Wireshark
January 14, 2025 at 10:10 PM
Reposted by Sake Blok
Hear hear... but small donations also help, we don't want to make #Wireshark commercial, but it does seem silly so many companies depend on us, but don't realize we need to cover our costs somehow.

So if you hold warm feelings towards Wireshark, feel free to visit:

wiresharkfoundation.org/donate/
wiresharkfoundation.org
January 13, 2025 at 9:09 AM
If you ever need to share a pcap(ng) file, but don't want to leak sensitive information, Tracewrangler is the tool for you. By default it removes all info above L4 and anonymizes L1/2/3. But you can tune it to work just the way you want it.

Go check it out!
Just released a new version of Tracewrangler at www.tracewrangler.com. Some minor bug fixes, and it can now read & write Linux Cooked Capture v2 headers, so those kind of #pcap files can now be sanitized as well. Not a big thing, but I'm slowly getting into coding again it seems...
January 13, 2025 at 8:59 AM
Thanks for the invite @pyrobatnl.bsky.social & @k4bergen.bsky.social :-)
August 11, 2023 at 5:21 PM