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Questions tagged [packet-sniffer]

Sniffer is another word for packet analyzer

A sniffer, or packet analyzer, is a tool that intercepts data-packets from networks (ehternet,wireless,...).

A very known packet sniffer is wireshark.

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How to display interface in tcpdump output flow?

This seems to be quite a trivial problem, but after some searching I can't stil figure out the answer. One can run tcpdump using "any" as the interface description, ie: # tcpdump -i any -n host 192.168.0.1 Is there any way to force tcpdump to show…
mdrozdziel
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Sniff serial port on Linux

How can I sniff packets communicated through a serial port on Linux?
user34870
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How does network sniffing software work over a switch?

We have several of standard non-managed 3com switches in a network. I thought switches were supposed to only send packages between peers of a connection. However it appears network sniffing software running on a computer attached to one any one of…
Can Kavaklıoğlu
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WEP/WPA/WPA2 and wifi sniffing

I know that WEP traffic can be "sniffed" by any user of the WIFI. I know that WPA/WPA2 traffic is encrypted using a different link key for each user, so they can't sniff traffic... unless they capture the initial handshake. If you are using a PSK…
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What are the attack vectors for passwords sent over http?

I am trying to convince a customer to pay for SSL for a web site that requires login. I want to make sure I correctly understand the major scenarios in which someone can see the passwords that are being sent. My understanding is that at any of the…
KevinM
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Find which machine is using all the bandwidth

I need to know which machine is taking all the network bandwith. It's there a tool I can use to monitor my local network and know which machine is taking all the LAN bandwith? What do you think about Zenmap ?
Cédric Boivin
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Find Sniffer on LAN

What tools or techniques are available for *nix and Windows that help in finding if someone else on the LAN is using a sniffer? Having said that and strongly considering that there are tools out there to discover such "phenomena" what would be the…
Anand Shah
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Sniff SSL handshake using tshark

How do I get a dump of a SSL handshake in a human readable format using tshark? I need to provide this to a vendor for debugging a failed SSL handshake problem. This needs to be done in tshark, not wireshark as it's being done on a remote server…
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Find IP address of a device?

Open question: How to find the IP address of a device? As I understand, there are no guaranteed methods that work always, but there's a hundred approaches that work in specific situations, and I'd like to learn as many as possible. The typical…
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sniffing on a switched LAN

I often find myself in the position of having to sniff on a connection between for example an arm board I am developing on, and another computer on the network, or out of the network. The easy situation is when I can install a sniffer on the…
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Tcpdump on ec2 not seeing all packets

I'm running tcpdump on an Amazon EC2 instance to monitor HTTP traffic going to Nginx (this is just a test box, the only resource is the example test page). Running tcpdump with the command # tcpdump -vn -i any port 80 shows the packets from a…
Jordan
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Silently start Wireshark

I have a computer in our office that always gets infected by viruses. Because of this, I would like to use Wireshark (or at least something) to monitor internet traffic for a while on this machine. How can I have it start at boot time and begin…
codewario
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Using a router to intercept HTTP data. Sniffing?

This is my first serverfault post. I've been a member of Stack Overflow for a while and doubt that this question would fly over there. I have my PS3 and XBOX 360 hard wired to a Linksys Wireless N router. I'd like to find a way to determine the…
Daddy
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How can i sniff/dump HTTP protocol as ASCII for a port with tcpdump or altenative?

I need to view how an application is sending and is receiving traffic through a http protocol that it comunicates on localhost (it has an embeded port coded with .gz) I'm sure it's some XML that it sends and receives but i want to sniff it , and…
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How to check if promiscuous mode is enabled on network interface in windows server 2012 R2

I'm working with basic windump commands. After I close the windump, my pc is slowly and cpu range is high. How to check if promiscuous mode is enabled on network interface in windows server 2012 R2.
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