Does Wireshark capture everything?

Why am I not seeing all interfaces in Wireshark?

I am trying to sniff out the protocols running on my wireless network.

I have added my wireless adapter to Wireshark, but when I do a capture (wlan0) I only see the data that is being sent and received from my wired Ethernet port. I am unable to see any other traffic on the network. What am I doing wrong?

A Wifi card doesn't act like a ethernet card. It doesn't use ethernet headers or frames. It uses frames that are different from ethernet.

You'll need to install some additional software on your Windows PC in order to be able to capture on your Wifi interface. Try looking into something like WireShark.

How do I capture all packets?

After reading about the pcap interface in FreeBSD, it occurred to me that I don't think that it's possible to capture all packets.

That is to say, I want to listen for all packets from ALL IP addresses on a specific interface or listen for all packets leaving an IP address through a specific interface. How can I do that? (Preferably without putting in a kernel debugger.)
Thanks. Mike. You can use the pcapnext function to fetch all packets from the first interface. That'll give you everything you need.

I haven't seen anything better than this, but there are lots of pitfalls with packet captures.

Does Wireshark capture everything?

I'm pretty new to Wireshark and I was wondering if it does capture all the data being sent over the network?

I know it captures things like packet length and stuff but does it capture every bit of data going over the network (which seems like a good way to learn how to use the tool). Edit: After running wireshark for 10 minutes and not seeing anything, can I assume the answer is "yes"? Wireshark does indeed do exactly what you want. From the wireshark manpage: A packet capture will capture all packets coming on a NIC or over the network. There are four kinds of packet captures: Raw captures, in which every datagram is completely captured and preserved in a file. These are most appropriate for capturing large quantities of data, such as full protocols, as well as capturing complete sessions.

Packet filter captures, in which only packets matching a filter string are captured and preserved in a file. Packet filter captures are more useful for debugging than capturing complete sessions, as they only contain the information specified in the filter. If you did the same for tcp port 80, then you would end up with two packets captured and one saved in a file.

Netfilter captures, in which only packet matches a Netfilter queue string are captured and preserved in a file. Netfilter captures are more useful for debugging than capturing complete sessions, as they only contain the information specified in the queue.168.