All Questions
19
questions
0
votes
0
answers
1k
views
Packet loss on a single Windows 10 machine in the network
I am having this issue where one of my computers keeps freezing the transferences between any of the nodes of the network.
It runs on Windows 10 Enterprise 10.0.19044.
Packet Loss
Intermittent ...
0
votes
1
answer
323
views
Device communicates with server through bridge, unable to capture all packages
I'm trying to reverse engineer a device to be able to access its API locally. Currently it is communicating with an online server, where I can log into to see its data.
Set up
The device connects ...
- 113
0
votes
1
answer
837
views
Wireshark is not display the packets between the client and server
On my machine there a TCP server is running @port 54000 which is a echo server it sends the same message which is sent to it.
I have multiple clients which is connected to this server. Clients and the ...
user1096880
1
vote
1
answer
974
views
What happens if a second HTTP request is made before I receive the response of the first request?
Suppose I made two requests from my web browser to a web server. I am sending the second request before I get the response of the first request. I know the response of the later request is rendered on ...
- 13
0
votes
0
answers
169
views
How default Web Page is loaded with just TCP connection and no HTTP transaction?
Below is the packet capture from WireShark when a web request is made to the Google Server
172.217.26.228 is the IP address of the Google Server.
Filter that I am using is
(ip.dst == 172.217.26....
- 659
7
votes
1
answer
12k
views
Practical (vs theoretical) max limit of TCP packet size
I'm a web developer who is pretty new to the industry.
I was presented with a coding challenge for a job interview where I need to design a messaging system and architect a system for how it deals ...
1
vote
1
answer
342
views
How to configure OS to re-assemble TCP segments
I have an application that is reading in TCP data from a socket. The sending device is sending out a full 1400 bytes of data to the server's socket on the other end. Somewhere along the way, the ...
- 13
0
votes
0
answers
355
views
How to identify a LDAP packet/frame
I'm developing an application in Java which needs to know if a frame contains a LDAP packet or not. So far, I've figured out how to find out if the frame contains IPv4 and TCP headers but how do I ...
- 243
1
vote
1
answer
707
views
netem packet loss for packets destined to the same machine
I am using a command like
sudo tc qdisc add dev eno1 root netem loss 10%
to delay all the outgoing packets over the interface eno1, but this won't work if the packets are destined for the same ...
- 127
1
vote
1
answer
8k
views
Why are TCP Packets going from my pc to server owned by EdgeCast Networks, Inc.?
I am seeing a lot of entries like this in my Netgear DGN 1000 log for the last few weeks:
Wed, 2015-11-04 20:36:56 - TCP Packet - Source:192.168.0.2,63272 Destination:68.232.44.114,80 - [BLOCK]
From ...
0
votes
2
answers
1k
views
How are Internet connections differentiated from each other by an operating system?
Given this example, how would my operating system differentiate between each request.
Let us say I have 3 tabs open, and at the same exact time, they all go to http://google.com. How would my ...
- 123
5
votes
3
answers
16k
views
TCP vs UDP. Sending data on a closed port
I try to understand differences between TCP and UDP packet on the error-checking. I know that UDP packets are connectionless and doesn't care that the packet will arrive the destination safely. And ...
- 71
1
vote
1
answer
2k
views
Why HTTP response is split in 2 parts: header and body?
I'm trying to understand why a single HTTP response is split in 2 parts in the following setup:
Requested resource is protected by HTTP Digest Authentication on
server side.
Communication is ...
- 13
30
votes
5
answers
40k
views
How do IP answer packets reach their destination inside of a private LAN? [duplicate]
This is a little theory question that has been confusing me for a pretty long time.
Basically, if we are inside of a private LAN, and we want incoming packets to reach, for example, an HTTP server ...
- 301
3
votes
2
answers
21k
views
Minimum size of the data part of TCP segment
My question has two parts:
I know that the "data" part of an Ethernet frame can be 46~1500 bytes. Considering the IP header of 20 bytes + TCP header of 20 bytes, the minimum "data" size of a TCP ...
- 33