![]() ![]() When you launch Wireshark, your packets won't be dissected correctly (yet), but you should notice an indication in the packet details pane, "User encapsulation not handled: DLT=147, check your Preferences->Protocols->DLT_USER" (assuming of course that you don't already have a protocol assigned to this DLT). ![]() Now you need to assign DLT 147 to gtp via: Edit -> Preferences -> Protocols -> DLT_USER -> Encapsulations Table: Edit -> New -> DLT: User 0 (DLT=147) -> Payload protocol: gtp -> OK -> OK -> OKĪt this point, all the UDP filters should be easier to work with because you will only have a single UDP header now.Capture filters (like tcp port 80) are not to be confused with display filters (like tcp.port = 80). The former are much more limited and are used to reduce the size of a raw packet capture. ![]() The latter are used to hide some packets from the packet list.Ĭapture filters are set before starting a packet capture and cannot be modified during the capture. In the main window, one can find the capture filter just above the interfaces list and in the interfaces dialog.ĭisplay filters on the other hand do not have this limitation and you can change them on the fly. Wireshark filter by ip and port range how to#.
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