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What is the correct PCAP filter in wireshark to capture all TCP traffic going to or from host 192.168.0.125 on port 25?
tcp port 25 and host 192.168.0.125
tcp.port == 25 and ip.host == 192.168.0.125
host 192.168.0.125:25
tcp.src == 25 and ip.host == 192.168.0.125
http://www.tcpdump.org/manpages/pcap-filter.7.html. The OP confused "capture" with "display". See https://wiki.wireshark.org/CaptureFilters. From the Wireshark page: "Capture filters (like tcp port 80) are not to be confused with display filters (like tcp.port == 80) ::EDIT:: Spam link to sell product removed.
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