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Questions tagged [wireshark]

Wireshark is an open source Network Protocol Analyzer under GNU License.

507 questions
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Is it possible for SYN/ACK to not be immediately proceeded by a SYN in a network trace

I'm writing a simple program to calculate initial RTTs from a network capture I took using Wireshark. To do this I wan't to calculate the difference in time between the SYN and the SYN/ACK. I don't know much about locating these in my trace, I was…
Daniel Kobe
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the MAC header of captured wireshark packets

I have been reading about the IEEE 802.11 and especially on the MAC layer, and i noticed that it contains a lot of informations, but when i start to capture with wireshark with my wireless card, the MAC (Ethernet) header showing in wireshak contains…
Sidahmed
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Why is wireshark capturing packets not destined to my host?

My IP was configured as 192.168.101.91, I don't understand why my host is receiving packets which have a destination address of 192.168.87.203(and many other IPs which I didn't capture) given that I have already shutdown my KVM and disabled ip…
xczzhh
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block all packets in windows 7 (so nothing appears in wireshark)? Can anything locally installed do it?

is it possible to block all packets in windows 7, so that nothing appears in wireshark? I have tried choosing Block all for incoming. for outgoing, I see it has no block all option, just a block option so it's a whitelist. I tried that and…
barlop
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IP testing tool similar to wireshark website

I am looking to implement a tool similar to the one linked below on my personal server/website what are the steps I would need to get started? http://www.wireshark.org/tools/v46status.html I understand that I will need two seperate domains for…
hinekyle
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Continuous conversion to text file using Wireshark

What is the procedure to convert captured files to text files on a continuous basis ? Export in Wireshark is a manual technique, any way to automate the process ?
user170085
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Wireshark not displaying GET or POST data

I'm a student and I'm taking my first networking class. I'm working on an assignment designed to get me used to using Wireshark and understanding packet transfers. Part of the assignment is to collect some data about a certain GET request, but my…
user82130
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DHCP messages in LAN

I run a Mac and release/renew my IP with: sudo ipconfig set en0 DHCP In wireshark I get the following with udp.port==67 as filter: Why are the messages sent from my computer broadcasted, but the server send them directly to me. The litterature I…
Francis9910
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does ping command to a dns name uses DNS PTR type messages?

Okay I cant understand this, when I try to ping to a machine on my network using the name associated I get a response from that machine, thats normal.. But there are messages that the sender sends to the top machine (SOA) that I dont…
TiagoM
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Stealing internet by changing MAC address?

OK - I have a static IP - and I have been on the same provider for years - its a wired network (a cable goes directly to my network card) - and the cable is connected to a switch on a pole in the street (the pole is connected to another pole which…
George
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Checking HTTP response for website using Wireshark

Is there a specific way to know if the file that we download through a web server (e.g.: Java) can be verified through Wireshark? I want to check if the file is working perfectly from internal and external site.
newbie.my
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Measuring delays between various components on a localhost

I need to profile a web application from a system performance standpoint and find out for typical user actions (accessing the home page, logging in...) where the delay comes from. The website uses the following components: -apache (serving a PHP…
Max
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Python sockets: TCP errors in linux, while same program works fine on Windows10

I'm trying to communicate with a commercial power supply device via TCP/IP using python sockets. I tried using both a virtual linux(centos8stream) and virtual windows10, both running at the same physical computer, on the same network interface. Both…
Cenkoloji
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Dumpcap - Ram still reserved after stop

System: Win 10 Pro and latest updates (Sept. 2020) 64Bit. Problem: Using dumpcap (Dumpcap (Wireshark) 3.2.5 (v3.2.5-0-ged20ddea8138)) with a ringbuffer reserves RAM even after closing the dumpcap.exe. The PC needs to be restarted to free the mem.…
Eggi
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SSH connection not established, but standard TCP/IP connection works

I'm working on a custom yocto Linux for a Raspberry PI 3 and try to get the WIFI connection working with SSH. However when trying to connect from my PC (Ubuntu 19.10, SSH OpenSSH_8.0p1 Ubuntu-6build1, OpenSSL 1.1.1c 28 May 2019) to the PI on which…
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