This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started), but it is best described by Ray who says this is Daddy's thoughts! Like the best music is from the Eighties and a wee dram helps in solving most inconveniences.
NetworkMiner is an open source Network Forensic Analysis Tool (NFAT) for Windows (but also works in Linux / Mac OS X / FreeBSD).
NetworkMiner can be used as a passive network sniffer/packet
capturing tool in order to detect operating systems, sessions,
hostnames, open ports etc. without putting any traffic on the network.
NetworkMiner can also parse PCAP files for off-line analysis and to
regenerate/reassemble transmitted files and certificates from PCAP