![]() ![]() You can see all files being dumped into the directory with the host we have given as the beginning of the filename. Step 3: execute tcpflow Command: tcpflow host 192.168.0.103 Making the directory for tcpflow output. Step 2: Change to the new directory Command: cd tcpflowdata Step 1: Create a new directory Command: mkdir tcpflowdata So let’s create a folder for dumping the data and then execute tcpflow. Tcpflow dumbs all data into the current working folder(execute the command:pwd to know your current present working directory). This lab demonstrates on dumping the all the data between the target. Selecting all HTTP & https traffic from and to the specified host. Remember HTTP runs on port 80 & https on 443. Specifically, HTTP or https traffic from & to host(192.168.0.100) is captured and displayed. Here the command selects the host “192.168.0.100”, do an “AND” operation to the condition: port 80 “OR” port 443. For example, we want to see all the HTTP & https traffic from & to the host, we issue: Command: tcpflow -ce host 192.168.0.100 and port 80 or port 443. We can use logical comparisons also during capturing. Suppose we need all the HTTP traffic in the network, command: tcpflow -ce port 80 All HTTP traffic in the network in alternating colors Note: If you are using any other interface make sure to give -i option & the corresponding interface. This lab demonstrates basic console-logging of data to and from the target. v: verbose operation equivalent to -d 10 ![]() s: strip non-printable characters (change to '.') r: read packets from tcpdump output file f: maximum number of file descriptors to use e: output each flow in alternating colors(Blue=client to server Red=server to client Green=Unknown) C: console print only, but without the display of source/dest header c: console print only (don't create files) Options Syntax: tcpflow -b: max number of bytes per flow to save
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