I'm trying to filter traffic only to a given HTTP host name. I have a server, and I have dozens of websites on it. Ritam Nereda Diskografija. It only has one interface and one IP address.
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Contents • • • • • • • • Capture filter is not a display filter 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. Capture filters are set before starting a packet capture and cannot be modified during the capture. Display filters on the other hand do not have this limitation and you can change them on the fly. In the main window, one can find the capture filter just above the interfaces list and in the interfaces dialog.
Environment Variable Resultant Filter SSH_CONNECTION not (tcp port srcport and addr_family host srchost and tcp port dstport and addr_family host dsthost) SSH_CLIENT not (tcp port srcport and addr_family host srchost and tcp port dstport) REMOTEHOST not addr_family host host DISPLAY not addr_family host host CLIENTNAME not tcp port 3389 ( addr_family will either be 'ip' or 'ip6') Further Information • from the. • • For the current version of Wireshark, 1.8.6, and for earlier 1.8.x releases, the capture filter dialog box is no longer available in the capture options window.
Instead, you need to double-click on the interface listed in the capture options window in order to bring up the 'Edit Interface Settings' window. At the bottom of this window you can enter your capture filter string or select a saved capture filter from the list, by clicking on the 'Capture Filter' button. • The includes a comprehensive capture filter reference • The gives a good introduction to capture filters • Capture and display filter • packetlevel.ch See Also: more info on filters while displaying, not while capturing The Discussion BTW, the Symantec page says that Blaster probes 135/tcp, 4444/tcp, and 69/udp. Would • (tcp dst port 135 or tcp dst port 4444 or udp dst port 69) and ip[2:2]==48 • be a better filter? - Gerald Combs Q: What is a good filter for just capturing SIP and RTP packets?
A: On most systems, for SIP traffic to the standard SIP port 5060, • tcp port sip should capture TCP traffic to and from that port, • udp port sip should capture UDP traffic to and from that port, and • port sip should capture both TCP and UDP traffic to and from that port (if one of those filters gets 'parse error', try using 5060 instead of sip). For SIP traffic to and from other ports, use that port number rather than sip. In most cases RTP port numbers are dynamically assigned.
You can use something like the following which limits the capture to UDP, even source and destination ports, a valid RTP version, and small packets. It will capture any non-RTP traffic that happens to match the filter (such as DNS) but it will capture all RTP packets in many environments. • udp[1] & 1!= 1 && udp[3] & 1!= 1 && udp[8] & 0x80 == 0x80 && length.