Why does tcpdump only capture the first 68 bytes of a packet?

  • Thread starter Thread starter SpiffyEh
  • Start date Start date
  • Tags Tags
    bytes Capture
AI Thread Summary
TCPDUMP has a default capture limit of 68 bytes, chosen to capture essential packet header information while avoiding exposure of user data. This default setting serves as a useful network diagnostic tool. Users can adjust this limit to capture the entire packet by using the "-s 0" option, allowing for more comprehensive analysis when needed.
SpiffyEh
Messages
191
Reaction score
0
By default TCPDUMP limits the number of bytes it captures to 68. Why did they select 68 bytes? Does anyone know why?
 
Computer science news on Phys.org
68 bytes is just the default value. You can set it to capture the whole packet by using the "-s 0" option. It's set to that by default because it's just enough to capture packet header information without revealing content; making it a useful network diagnostic without snooping through user data.
 

Thread 'The Human Cost of AI'

This week, I saw a documentary done by the French called Les sacrifiés de l'IA, which was presented by a Canadian show Enquête. If you understand French I recommend it. Very eye-opening. I found a similar documentary in English called The Human Cost of AI: Data workers in the Global South. There is also an interview with Milagros Miceli (appearing in both documentaries) on Youtube: I also found a powerpoint presentation by the economist Uma Rani (appearing in the French documentary), AI...
View full post »
Thread 'Urgent: Physically repair - or bypass - power button on Asus laptop'

Thread 'Urgent: Physically repair - or bypass - power button on Asus laptop'

Asus Vivobook S14 flip. The power button is wrecked. Unable to turn it on AT ALL. We can get into how and why it got wrecked later, but suffice to say a kitchen knife was involved: These buttons do want to NOT come off, not like other lappies, where they can snap in and out. And they sure don't go back on. So, in the absence of a longer-term solution that might involve a replacement, is there any way I can activate the power button, like with a paperclip or wire or something? It looks...
View full post »

Similar threads

MHB Why is Fragmentation Offset Multiple of 8? Understanding IPv4 Fragmentation
Replies
1
Views
3K
Components of Bluetooth audio delay/latency?
Replies
5
Views
3K
I Why Does Neutron Capture Only Emit Gamma Rays and Not Charged Particles?
Replies
2
Views
2K
Strange change in behavior of home/F11 and end/F12 keys on Dell laptop
Replies
3
Views
4K
Comp Sci What happens in memory during DMA using pointers?
Replies
3
Views
1K
I Schrödinger's astronaut as a quantum computer?
Replies
27
Views
2K
Can I run a stopwatch in an Andriod notification?
Replies
2
Views
2K
Need Advice on studying in my first University Physics class
Replies
10
Views
3K
Why Information Grows: book review
Replies
3
Views
2K
How Does C Manage Memory Addresses and Types?
Replies
7
Views
3K

Hot Threads

Recent Insights

Back
Top