© http://www.lovemytool.com/blog/2010/04/top-10-wireshark-filters-by-chris-greer.html
ip.addr == 10.0.0.1
Sets a filter for any packet with 10.0.0.1, as either the source or dest
ip.addr==10.0.0.1 && ip.addr==10.0.0.2
sets a conversation filter between the two defined IP addresses
http or dns
sets a filter to display all http and dns
tcp.port==4000
sets a filter for any TCP packet with 4000 as a source or dest port
tcp.flags.reset==1
displays all TCP resets
http.request
displays all HTTP GET requests
tcp contains traffic
displays all TCP packets that contain the word ‘traffic’. Excellent when searching on a specific string or user ID
!(arp or icmp or dns)
masks out arp, icmp, dns, or whatever other protocols may be background noise. Allowing you to focus on the traffic of interest
udp contains 33:27:58
sets a filter for the HEX values of 0x33 0x27 0x58 at any offset
tcp.analysis.retransmission
displays all retransmissions in the trace. Helps when tracking down slow application performance and packet loss
tcp.flags.syn == 1 && tcp.flags.ack == 1