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#tcp

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Crazy-to-Bike

Seit gestern haben wir ein seltsames #Kommunikationsproblem zwischen unserer #Wallbox #Tinkerforge #Warp 3 und dem #Goodwe #Wechselrichter.

Die Wallbox zeigt dann für die #Stromzähler "GoodWe Smartmeter" (Netzanschluss) und "Pylontech Force-H3" (der am WR angeschlossene Speicher), deren Daten beide vom Goodwe WR geliefert werden, nichts mehr an.

Dann funktioniert wenig überraschend das #PV #Überschlussladen nicht mehr. Steht das Laden auf "nur PV", hört der Ladevorgang folglich auf und man steht am nächsten Tag weiterhin mit leerem #Akku da, wenn man es nicht rechtzeitig bemerkt.

Das Kuriose:
Im Router ist der Goodwe weiterhin online. Die Daten werden auch sowohl an das #Semsportal von Goodwe als auch an #Homeassistant geliefert bzw. sind von diesen abrufbar.

Die Anbindung / Kommunikation der Warp3 und HA an den WR ist jeweils über #Modbus #TCP.

Lösen konnte ich das beide Male durch Drücken des "Reconnect" Buttons am #WifiModul des Goodwe. Nachdem sich dieses neu mit dem #WLAN verbunden hat, zeigt auch die Warp3 die Daten wieder an.

Was mich dabei eben irritiert, dass nur die Warp3 keine Daten mehr bekommt / abrufen kann. Es ist also offensichtlich kein generelles Problem des Wifi Moduls vom Goodwe.

Kann sich da jemand einen Reim drauf machen oder hat eine Lösungsidee. So ist das ziemlicher Mist.

Bitte #Boost für mehr Reichweite.

#Elektromobilität #EAuto #Elektroauto #Energiewende #erneuerbareEnergien #regenerativeEnergien

Max Resing

Anyone who seeks for a well-written analysis of unsolicited #TCP traffic should give Decoding TCP SYN for Stronger Network Security a read. The blog post goes into TCP-procotol specifications. Recommended to every #networkengineer .

Props go to @jtk for his strong analytical skills and excellent writing style.

NETSCOUTDecoding TCP SYN for Stronger Network Security | NETSCOUTAnalyzing transmission control protocol (TCP) SYN segments, the initial step in th
#honeypots#tcpflood#tcpsyn
John Kristoff

Decoding TCP SYN for Stronger Network Security

netscout.com/blog/asert/decodi

A brief look at TCP SYNs observed by low impact honeypots. I mainly sought evidence for source address spoofing and anomalous patterns with TCP header lengths and the window size,

NETSCOUTDecoding TCP SYN for Stronger Network Security | NETSCOUTAnalyzing transmission control protocol (TCP) SYN segments, the initial step in th
#TCP#honeypot
Maggie Maybe

I knew I posted somewhere about this horrible therapeutic cannabis program in New Hampshire.

If you have ever considered signing up for the therapeutic cannabis program in New Hampshire, just don’t. Don’t give any of those shitty dispensaries your money.

They fought for the right to market to us and when they did our privacy was violated. And I’m still mad about it because it took me a year to find out that the consequences were that they had to write a statement explaining how they won’t do it again. That’s it.

Just go buy Weed and Maine or Mass. It’s more affordable anyway. And the edibles are better.

The fact that the dispensaries asked to be able to market it to us fills me with rage. There are only four in this whole state. They don’t need to market to us we know who they are.

#TCP #NH #FuckAds

From: @maggiejk
zeroes.ca/@maggiejk/1143819395

zeroes.caMaggie Maybe (@maggiejk@zeroes.ca)@arrrg@kolektiva.social and please forgive me I’m not trying to change the subject from immigrants and dreamers. But last year after I received this postcard I freaked out and I contacted the director of the therapeutic cannabis program. His name is Michael Holt. I asked him multiple questions about this, but the most important questions I had are what are the consequences for this privacy violation, and what legislation changed this program to allow them to market to us. (This was so I could find out what state rep introduced that bill so I could have a go at getting them or their opposition to fix it.) I asked these questions immediately upon receiving these postcards, then I asked them a few other times throughout the past 12 months. Regarding the consequences he told me they would receive the full consequences. The dispensary I used to go to told me that those consequences are probably thousands of dollars. That’s actually not a consequence to a corporation enjoying record profits, but whatever. Last week, 12 months later, this man still hasn’t told me what legislation changed the law, but he finally told me that their consequences were that they were required to write a statement explaining how they will make sure this never happens again. I fucking cried. These people violated my HIPAA rights and the only consequence to them is that they had to write an essay saying they won’t do it again? Like the Bart Simpson meme where he has to write something 100 times on a chalkboard except they only had to write it once privately? I don’t think he’ll ever answer my question about what legislation changed to this because I accused him of stalling so long that I can’t even file a HIPAA complaint now because the statute of limitations is 180 days. And honestly I wouldn’t file a HIPAA complaint because I don’t snitch on myself to the feds. But still wtf?!?! #NH #HIPAA #TCP #ATC #snitches #SanctuartATC #medicalcannabis
Maggie Maybe

@arrrg and please forgive me I’m not trying to change the subject from immigrants and dreamers.

But last year after I received this postcard I freaked out and I contacted the director of the therapeutic cannabis program. His name is Michael Holt. I asked him multiple questions about this, but the most important questions I had are what are the consequences for this privacy violation, and what legislation changed this program to allow them to market to us. (This was so I could find out what state rep introduced that bill so I could have a go at getting them or their opposition to fix it.)

I asked these questions immediately upon receiving these postcards, then I asked them a few other times throughout the past 12 months. Regarding the consequences he told me they would receive the full consequences. The dispensary I used to go to told me that those consequences are probably thousands of dollars. That’s actually not a consequence to a corporation enjoying record profits, but whatever.

Last week, 12 months later, this man still hasn’t told me what legislation changed the law, but he finally told me that their consequences were that they were required to write a statement explaining how they will make sure this never happens again.

I fucking cried. These people violated my HIPAA rights and the only consequence to them is that they had to write an essay saying they won’t do it again? Like the Bart Simpson meme where he has to write something 100 times on a chalkboard except they only had to write it once privately?

I don’t think he’ll ever answer my question about what legislation changed to this because I accused him of stalling so long that I can’t even file a HIPAA complaint now because the statute of limitations is 180 days. And honestly I wouldn’t file a HIPAA complaint because I don’t snitch on myself to the feds. But still wtf?!?!

#NH#HIPAA#TCP
Wireshark

Master TCP Analysis with @packetjay at SharkFest!

Join renowned network analyst Jasper Bongertz for his TCP Analysis Masterclass during the Pre-Conference Class II at both SharkFest'25 US and Europe. This full-day session is designed to elevate your understanding of TCP connections, especially in complex, multi-tiered environments. Whether you're troubleshooting applications or delving into multi-point captures, this class offers invaluable insights beyond the basics.​

Don't miss this opportunity to enhance your packet analysis skills with one of the industry's best.​

Register Now: sharkfest.wireshark.org

#Wireshark#SharkFest#TCP
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Max Resing

Just wanted to share some thoughts on #RFC9715 - an #RFC that defines standards on reducing the #DNS issue of IP fragmentation over #UDP. It's not a long read, but a good one for everyone who understands the issues of large UDP responses on the #Internet. A great leap forward to (hopefully) reduce the reflection/amplification #DDoS potential of DNS.

Just today I learned that #Google will configure their public DNS resolvers to limit to ~1400 bytes (smaller adjustments expected while figuring out the sweet spot in production). From now on, DNS responses which exceed this limit will have the truncated flag set instructing the client to resolve back to #TCP.

#ipv4#ipv6#ietf
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