This is a longer and more awkward looking filter, but you might finder it easier to create since the comparison logic is more straightforward.
#Wireshark filters limit mac address mac#
useful to filter on the vendor identifier part (OUI) of the MAC address. (ether=0x0 and ether=0x0f and ether=0xcc) or (ether=0x0 and ether=0x0f and ether=0xcc) Wireshark uses display filters for general packet filtering while viewing and. You could also just examine each byte individually: Wireshark and the 'fin' logo are registered. This filter uses "ether" and "ether" to examine the first four bytes of the destination MAC address and source MAC address, but then uses "& 0xffffff00" to mask the fourth byte before making the comparison. Field name Description Type Versions bluetooth.addr: Source or Destination: Ethernet or other MAC address: 2.0.0 to 4.0.0: bluetooth.addrstr: Source or Destination: Character string: 2.2.0 to 4.0.0: bluetooth.dst: Destination: Ethernet or other MAC address. So "ether" is valid, as is "ether" or "ether" but not "ether". The problem I ran into was that we're trying to examine three bytes, but the length value in a capture filter byte offset expression can only be 1, 2, or 4 bytes. This was only a first attempt for me at using byte offset notation in a capture filter, so maybe someone can shorten the syntax. Here is an example: So you can see that all the packets with source IP as 192.168.0.103 were displayed in the output. (ether & 0xffffff00 = 0x000fcc00) or (ether & 0xffffff00 = 0x000fcc00) For example, to display only those packets that contain source IP as 192.168.0.103, just write ip.src192.168.0.103 in the filter box. I was able to limit my capture to traffic to and from Netopia devices (OUI 00:0f:cc) with: Capture traffic to or from a range of IP addresses.
There are no keywords that let you do that, but you can accomplish what you want with a byte offset filter. The capture filter is used as a first large filter to limit the size of captured data to.
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