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Questions tagged [wireshark]

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

507 questions
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How to filter wireshark capture to have only packets with local ip as source or destination

How to filter wireshark capture to have only packets with local ip as source or destination? The expression should be valid for both ipv4 and ipv6. I am obviously asking for an other solution than that of finding the ipv4 and ipv6 manually and…
user196279
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How to display only the source port with tshark

I can display the source and destination tcp ports with tshark -T fields -e tcp.port 1111,2222 2222,1111 [...] How can I display only the source port in order to get 1111 2222
user123456
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decrypting ssl/tsl packets using tshark/wireshark

I am a novice with networking and unix and trying to debug an issue but I have been able to capture packets using tshark in order to analyze and inspect why clients are receiving 401 errors on initial connect. The quick solution is to not enforce…
unixFirstTimer
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network traffic capture between 2 vms

I am not a pro with networking and am trying to understand the same better. Below is the setup I have. Host system is OSX running VirtualBox. 2 virtualbox VMs (VM1 and VM2), each running Ubuntu and both these systems are connected with the host…
qre0ct
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packet colorization in Wireshark

is there anyone who could sum up the packet colorization system in wireshark? My capture list is looking quite colourful, but I don't quite understand how the colorization scheme work. Thank you
m.rossi
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How to perform Wiresharks File->Extract Objects->HTTP through Tshark commandline interface?

Using TShark, I want to be able to extract the payload in HTTP response from packets data captured through tshark in a .pcap file. In the Wireshark GUI, I was able to do that by File > Extract Objects > HTTP, and then choosing a file from the HTTP…
Jesss
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can tcpdump detect higher level protocols like wireshark?

Wireshark will guess what higher level protocols are being used in a packet, but how can I get tcpdump to do likewise (or any other linux command line tool)? For example, the following screenshot shows wireshark detecting "HTTP" as the protocol…
Alexander Bird
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How to debug a "connection refused" error with tshark?

I'm trying to establish a simple TCP connection between two machines in the same subnet (wireless network). The tool used is netcat. On machine A, I start a listener: nc -l -p 4506 On machine B, I fire up the request: nc -vv …
ivarec
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Wireshark Packet Capture Data Data ACK Confusion

I understand how acks work and windowing works. What I am not getting is why am I seeing the following behavior in packet captures Client Server data1-----> data2-----> <--------ack When the server acks for data2, how does the client…
Le Ray
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Capture traffic to/from a network node

I would like to capture all traffic to/from a network node. I don't know much about the network setup there, here's what I know: The target node is a Linux server, which has no access to internet, only available through LAN. I can only access this…
Gábor Major
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Transferring data to Active FTP server fails from DMZ but works fine from LAN

I know there are a ton of similar questions already, but I've read through just about everything I could find and am still having trouble resolving my specific issue. Problem: I am having difficulty transferring data to an external FTP server, but…
Gage Trader
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TCP sockets dying on LTE

I have about 25 audio streaming clients built on an i.mx6 arm platform, running linux version 4.3.0-rc2-00019-gbcee19f-dirty #36 SMP Tue Feb 9 15:27:51 EST 2016 armv7l I find on two specific units on 4g lte (mbr1516) in alberta that the socket is…
Erik Friesen
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How can I see what is the number of embedded objects used by a site in html from a wireshark trace?

I have recorded a wireshark trace and visited some websites. I exported the trace as a CSV file. How can I see the number of embedded objects in each of the sites I visited? Thanks.
Daniel Kobe
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PCAP traffic frame length short

I'm trying to make traffic and capture it using pcap file. I get pcap file from CAIDA(caida.org) site. This pcap file too big and doesn't have ethernet header. So i splitted pcap file to small size(40 MB) by using editcap and attach ethernet header…
whitehat
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Wireshark returns error on filters from Windows command prompt

It works when i use GUI with the following filter http.request.method == "GET" but when i run tshark is aways returns error tshark -i 1 -Y 'http.request.method == "GET"' tshark: Syntax error near "http.request.method". How can I run tshark from…
Andy
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