Questions tagged [wireshark]

For questions about Wireshark, a packet analyzer

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Does Wireshark capture all Wi-Fi traffic under the same access point even with WPA encryption?

I know that free unencrypted-Wi-Fi is dangerous since all the traffic in the same AP is visible. Does Wireshark capture all Wi-Fi traffic under the same access point even with WPA encryption?
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30 views

Hide/replace certain source and destination IP in Wireshark packet table

For demonstration purposes I need to show Wireshark packet table, but I need to hide some of the IP's there, like show 10.0.0.1 instead of 192.168.1.19. Very old threads suggest using Linux-only tools ...
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What is the difference between tshark, dumpcap and others for collecting/sniffing traffic?

Wireshark provides tshark and dumpcap, and I've also seen people using the wireshark binary or even tcpdump to collect/save network traffic. Online it is claimed that tshark or dumpcap hardly make a ...
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61 views

Capturing dot1q packets with Wireshark on a PC

I have spent the last few hours trying to capture some trunk packets so I can see and examine the dot1q VLAN field. I have tried mirroring the trunk port to my PC using the following commands on Cisco ...
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26 views

How do I use the wireshark I/O graph to plot the value of an arbitrary bit in the data layer?

I have a number of UDP packets that are using a protocol that is not implemented in wireshark. I would like to use the I/O graph to plot the value of the data packet byte at index 3. Is this possible? ...
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28 views

Wireshark packet read starting from a custom protocol

Pardon the badly-framed question title, I am struggling with it but could not find the best way to frame it. I have a program in which I use libpcap for dumping packets at various points in the ...
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32 views

How to analyze traffic made by device on local Wifi network

I have a device (Air quality sensor) that is sending data to a preconfigured server. I would like to access the data that is being sent. Device connects to local Wifi (WPA Secured) and presumably ...
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17 views

Import Embedded Packet Capture output into Wireshark

I did packet capturing with cisco's Embedded Packet Capture and I would like to view the output in Wireshark. The problem is that I only have CLI access to the device, so exporting via TFTP is not an ...
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22 views

How can we capture traffic under WiFi AP connected with an WAN router?

My PC is connected to the internet via an WiFi access point. The AP is connected to the router that provides global IP address. In our network, some of the PCs (Say PCs1) are directly connected to the ...
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1answer
435 views

How to plot and benchmark UDP response time?

Our application uses UDP protocol in the transport layer. I'm currently filtering the packet trace with the port and then manually checking the RTT by selecting the packet stream and by using " Set ...
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421 views

What is “cflow” in ipfix?

I am learning ipfix and found a cmd like this: tshark -r ipfix.cap -n -d udp.port==4379,cflow -O cflow What does the cflow part mean here? I was also told to filter cflow if I use Wireshark in ...