#packets — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #packets, aggregated by home.social.
-
Why does SSH send 100 packets per keystroke?
https://eieio.games/blog/ssh-sends-100-packets-per-keystroke/
#HackerNews #SSH #Packets #Keystrokes #Networking #Tech #Insights
-
Why does SSH send 100 packets per keystroke?
https://eieio.games/blog/ssh-sends-100-packets-per-keystroke/
#HackerNews #SSH #Packets #Keystrokes #Networking #Tech #Insights
-
Thanks so much to everyone who came to my workshop! The slides are now online. Pls get in touch if you have any questions! #wireshark #packets #39c3 https://codeberg.org/katalyst/39c3-packet-analysis-workshop-material
-
Thanks so much to everyone who came to my workshop! The slides are now online. Pls get in touch if you have any questions! #wireshark #packets #39c3 https://codeberg.org/katalyst/39c3-packet-analysis-workshop-material
-
Packets, Pierogi, and Protocols!
SharkFest’25 EUROPE is coming to Warsaw, Poland, a city rich in history, culture, and innovation.
Between deep dives into Wireshark & Stratoshark, explore Old Town, hear Chopin’s music, and enjoy Poland’s hospitality.
Secure your place: https://sharkfest.wireshark.org/sfeu/
-
Packets, Pierogi, and Protocols!
SharkFest’25 EUROPE is coming to Warsaw, Poland, a city rich in history, culture, and innovation.
Between deep dives into Wireshark & Stratoshark, explore Old Town, hear Chopin’s music, and enjoy Poland’s hospitality.
Secure your place: https://sharkfest.wireshark.org/sfeu/
-
I wanted to block #IP addresses based on some informations. So i started a small #Go #project to capture #packets. This quickly turned into more. I guess this becomes some kind of #XDR?
Clients capture packets, send these to the server, which stores them in a #database. This data is visualized on the dashboard. I'll also add controls to block ip's based on #regex, country and #abuseipdb score. This will be a fun project!
-
I wanted to block #IP addresses based on some informations. So i started a small #Go #project to capture #packets. This quickly turned into more. I guess this becomes some kind of #XDR?
Clients capture packets, send these to the server, which stores them in a #database. This data is visualized on the dashboard. I'll also add controls to block ip's based on #regex, country and #abuseipdb score. This will be a fun project!
-
In today's thrilling episode of "This Will Definitely Work," we introduce #oniux, the latest #magic #trick promising to make #Linux apps play nicely with #Tor. 🎩✨ Because, of course, what every user craves is yet another layer of #complexity and hope that all those #packets don't wander off into the void. 🤞🔍
https://blog.torproject.org/introducing-oniux-tor-isolation-using-linux-namespaces/ #HackerNews #ngated -
In today's thrilling episode of "This Will Definitely Work," we introduce #oniux, the latest #magic #trick promising to make #Linux apps play nicely with #Tor. 🎩✨ Because, of course, what every user craves is yet another layer of #complexity and hope that all those #packets don't wander off into the void. 🤞🔍
https://blog.torproject.org/introducing-oniux-tor-isolation-using-linux-namespaces/ #HackerNews #ngated -
-
-
Why is ARP used in networks?
YouTube video: https://youtu.be/xjV5akqB9lk
If you want to learn more about networks, join my Free CCNA Course here: https://davidbombal.wiki/freeccnayt
#ccna #packets #cisco #packet #tracer #internet #ethernet #iphone #android #network #cybersecurity #router #switch #networking #cert #job #career
-
Why is ARP used in networks?
YouTube video: https://youtu.be/xjV5akqB9lk
If you want to learn more about networks, join my Free CCNA Course here: https://davidbombal.wiki/freeccnayt
#ccna #packets #cisco #packet #tracer #internet #ethernet #iphone #android #network #cybersecurity #router #switch #networking #cert #job #career
-
Anyone know how to get more information out of Minecraft than this? I'm trying to write my own server implementation and running into a metaphorical brick wall here.
#Minecraft #csharp #programming #gamemodding #server #packets
-
Anyone know how to get more information out of Minecraft than this? I'm trying to write my own server implementation and running into a metaphorical brick wall here.
#Minecraft #csharp #programming #gamemodding #server #packets
-
The phishing attacker abused another API in the process: They collected the stolen passwords by misusing an API from the messaging service Telegram and sending the data to a bot account in a private channel. #Wireshark #packets #Telegram #spam #phishing #COpolitics
-
The phishing attacker abused another API in the process: They collected the stolen passwords by misusing an API from the messaging service Telegram and sending the data to a bot account in a private channel. #Wireshark #packets #Telegram #spam #phishing #COpolitics
-
I do network security testing for fun and profit. Usually we don't test full 10Gbit over the internet.
I have wanted to look into 100G for some time and found a reasonably priced 32 port 100G Mellanox SN2700 on eBay
It actually started with me finding and buying two Nvidia Mellanox Bluefield DPU2 cards with 200G ports. They have on the card ARM CPUs directly attached, 8 cores I believe
I went a bit overboard but will bring it to BornHack, so more people can have fun
-
Network lab, nice
So I got my Mellanox SN2700 booted, a few days ago. Now it is under the table with Onyx 3.9
The rest of the DDoS packet network lab is also being connected
Bluefield DPU2 dropped right into the PC, and is shown as MLX Connect 6 or something right away, boot messages flew past very quickly
Got the 40G to 4x 10G splitter working with a few commands, link up!
Plans are to play some more with DPDK and Penguinping.org plus ARM cores on the Bluefield
-
#Packets missed a FG, fumbled a punt leading directly to a touchdown, fumbled in the red zone, and still were one stop against a 3rd-string QB to win.
Couldn’t get it.
A three-phase failure but 200 yards rushing allowed. Can’t get red zone stops. A defensive meltdown.
-
🔥⏲️ Fudge Sunday "Uh Zoom ZPR" A look at at Zero-Trust Packet Routing (ZPR)
#newsletter #newsletters #platformengineering #devx #zerotrust #zpr #oracle #oci #oraclecloudworld #convergence #cloudnetworking #sase #ztna #cloudsecurity #casb #packets #people #privacy #personas #identity
-
🔥⏲️ Fudge Sunday "Uh Zoom ZPR" A look at at Zero-Trust Packet Routing (ZPR)
#newsletter #newsletters #platformengineering #devx #zerotrust #zpr #oracle #oci #oraclecloudworld #convergence #cloudnetworking #sase #ztna #cloudsecurity #casb #packets #people #privacy #personas #identity
-
Live Remote Packet Analysis with SSH, TCPDump, and WireShark
https://www.infosecworrier.dk/blog/2022/11/live-remote-packet-analysis.html
-
Live Remote Packet Analysis with SSH, TCPDump, and WireShark
https://www.infosecworrier.dk/blog/2022/11/live-remote-packet-analysis.html
-
From Linux Update: Frank Hoffman shows you how nftables simplifies the process of creating and maintaining firewall rules https://www.linux-magazine.com/Issues/2023/270/nftables #firewall #nftables #iptables #FOSS #filter #packets #Linux #netfilter #OpenSource
-
From Linux Update: Frank Hoffman shows you how nftables simplifies the process of creating and maintaining firewall rules https://www.linux-magazine.com/Issues/2023/270/nftables #firewall #nftables #iptables #FOSS #filter #packets #Linux #netfilter #OpenSource
-
Do You Need AWS Traffic Mirroring?
~~
ACM.223 Taking a look at the pros, cons, and costs
~~
by Teri Radichel | May 19, 2023
#cloud #aws #network #security #packets #traffic #mirroring #monitoring #logshttps://medium.com/cloud-security/do-you-need-aws-traffic-mirroring-6e74e773917a
-
Do You Need AWS Traffic Mirroring?
~~
ACM.223 Taking a look at the pros, cons, and costs
~~
by Teri Radichel | May 19, 2023
#cloud #aws #network #security #packets #traffic #mirroring #monitoring #logshttps://medium.com/cloud-security/do-you-need-aws-traffic-mirroring-6e74e773917a
-
Calculating Packet and IP Header Lengths
~~
CM.5 Digging into a packet header to decipher the field values
~~
by Teri Radichel | Mar 23, 2023 #network #math #cybersecurity #packets #Ip
https://medium.com/cloud-security/calculating-packet-and-ip-header-lengths-ba8552bbd32f -
Calculating Packet and IP Header Lengths
~~
CM.5 Digging into a packet header to decipher the field values
~~
by Teri Radichel | Mar 23, 2023 #network #math #cybersecurity #packets #Ip
https://medium.com/cloud-security/calculating-packet-and-ip-header-lengths-ba8552bbd32f -
Math in Network Packets
~~
CM.5 Bits, bytes, and packet headers, starting with the ethernet header
~~
by Teri Radichel | Mar 22, 2023
#cybersecurity #network #packets #math #hexadecimal #binary #bits #bytes #ethernet https://medium.com/cloud-security/math-in-network-packets-18aa038fa300 -
Math in Network Packets
~~
CM.5 Bits, bytes, and packet headers, starting with the ethernet header
~~
by Teri Radichel | Mar 22, 2023
#cybersecurity #network #packets #math #hexadecimal #binary #bits #bytes #ethernet https://medium.com/cloud-security/math-in-network-packets-18aa038fa300 -
Ok, went down a slight rabbit hole... You can use #nftables to log #packets to the nflog facility. #tcpdump or #tshark can read from the nflog queue and report info on the packets. Nftables can sample the packets randomly using numgen random mod 1000 < 50 I can sample 5% of packets (or whatever) if the output is easily readable by #Julialang I can turn the network visibility issue into a data analysis issue. What's the best way to read the output? tshark json?
-
Ok, went down a slight rabbit hole... You can use #nftables to log #packets to the nflog facility. #tcpdump or #tshark can read from the nflog queue and report info on the packets. Nftables can sample the packets randomly using numgen random mod 1000 < 50 I can sample 5% of packets (or whatever) if the output is easily readable by #Julialang I can turn the network visibility issue into a data analysis issue. What's the best way to read the output? tshark json?
-
I just spent a number of hours troubleshooting a weird issue with my brand new Ubiquiti Aggregation switch. I haven’t figured out exactly what is going on yet, but the problem is weird enough I wanted to toss it out and see what the Fediverse thinks.
I have two 10gbe hosts. FreeBSD Samba server and Linux client. Both plugged directly into the Aggregation switch (via SFP+ RJ45 adaptors).
Client can mount share, but
lsfails. Any I/O on the volume hangs for tens of seconds before failing.Prior to installing the USW-Aggregation, these same two hosts were connected together via a MikroTik 10gbps switch, and everything was working fine. (You may ask why I decided to replace a perfectly good MikroTik switch with an Ubiquiti product, and honestly now I am wondering the same thing.)
After lots and lots of experiments, it becomes clear that simply routing the traffic over the Aggregation switch is enough to cause the connection to fail.
Diving into the tcpdump on the client side, I find the client sending the same TCP packet over and over, retransmitting with an apparent exponential backoff until it times out and fails with an error.
On the server side, tcpdump shows the packet being received and the reply being sent instantaneously. However, the reply never makes it to the client.
The USW-Aggregation, in its default configuration, is completely swallowing this packet.
I dig around in the settings and turn on Jumbo frames and Flow Control. The problem magically goes away!
Fediverse, what is going on here?
#networking #ethernet #ubiquiti #unifi #tcpdump #packets #troubleshooting #help
-
I just spent a number of hours troubleshooting a weird issue with my brand new Ubiquiti Aggregation switch. I haven’t figured out exactly what is going on yet, but the problem is weird enough I wanted to toss it out and see what the Fediverse thinks.
I have two 10gbe hosts. FreeBSD Samba server and Linux client. Both plugged directly into the Aggregation switch (via SFP+ RJ45 adaptors).
Client can mount share, but
lsfails. Any I/O on the volume hangs for tens of seconds before failing.Prior to installing the USW-Aggregation, these same two hosts were connected together via a MikroTik 10gbps switch, and everything was working fine. (You may ask why I decided to replace a perfectly good MikroTik switch with an Ubiquiti product, and honestly now I am wondering the same thing.)
After lots and lots of experiments, it becomes clear that simply routing the traffic over the Aggregation switch is enough to cause the connection to fail.
Diving into the tcpdump on the client side, I find the client sending the same TCP packet over and over, retransmitting with an apparent exponential backoff until it times out and fails with an error.
On the server side, tcpdump shows the packet being received and the reply being sent instantaneously. However, the reply never makes it to the client.
The USW-Aggregation, in its default configuration, is completely swallowing this packet.
I dig around in the settings and turn on Jumbo frames and Flow Control. The problem magically goes away!
Fediverse, what is going on here?
#networking #ethernet #ubiquiti #unifi #tcpdump #packets #troubleshooting #help
-
Ever wondered how big ICMP errors can get? Well.. I got an answer for you in today's Packet Tuesday! https://youtube.com/watch?v=z9jk8Bbf4_o… #packetlife #pcaps #icmp #inpcapswetrust #packets #sec503
-
Ever wondered how big ICMP errors can get? Well.. I got an answer for you in today's Packet Tuesday! https://youtube.com/watch?v=z9jk8Bbf4_o… #packetlife #pcaps #icmp #inpcapswetrust #packets #sec503
-
Episode 3 of Packet Tuesday is live. This week, it is all about the TCP Urgent flag. Trying to keep them a bit shorter in the future to not spent half an hour on one bit ;-) https://packettuesday.com
I hope everybody is enjoying these as much as I do. Thinking about moving on to some SSL stuff next, but also trying to keep them a bit shorter. Let me know if these work for you, or what I can improve. If I spent half an hour on a TCP flag… who knows how long the SSL Client Hello episode will get :)
And please let me know if I am making mistakes. I am not perfect and actually learn new things as I put these together. Well, I can always claim that I add intentional mistakes to increase “engagement.” :)
-
Episode 3 of Packet Tuesday is live. This week, it is all about the TCP Urgent flag. Trying to keep them a bit shorter in the future to not spent half an hour on one bit ;-) https://packettuesday.com
I hope everybody is enjoying these as much as I do. Thinking about moving on to some SSL stuff next, but also trying to keep them a bit shorter. Let me know if these work for you, or what I can improve. If I spent half an hour on a TCP flag… who knows how long the SSL Client Hello episode will get :)
And please let me know if I am making mistakes. I am not perfect and actually learn new things as I put these together. Well, I can always claim that I add intentional mistakes to increase “engagement.” :)
-
@sans_isc @jullrich If it's too hard going a week without Johannes, watch this puny(code) little video he made. https://youtu.be/4TIAE-S4cDA
-
@sans_isc @jullrich If it's too hard going a week without Johannes, watch this puny(code) little video he made. https://youtu.be/4TIAE-S4cDA
-
I finally got the first episode of "Packet Tuesday" published. Packet analysis in depth. Feedback, and packet donations, are welcome. https://packettuesday.com [of course: subscribe on YouTube] #packets #sec503 #wireshark #tcpdump
