62 lines
3.8 KiB
Plaintext
62 lines
3.8 KiB
Plaintext
The following is a demonstration of the tcpsnoop program.
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Here we run tcpsnoop and wait for new TCP connections to be established,
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# tcpsnoop
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UID PID LADDR LPORT DR RADDR RPORT SIZE CMD
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100 20892 192.168.1.5 36398 -> 192.168.1.1 79 54 finger
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100 20892 192.168.1.5 36398 <- 192.168.1.1 79 66 finger
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100 20892 192.168.1.5 36398 -> 192.168.1.1 79 54 finger
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100 20892 192.168.1.5 36398 -> 192.168.1.1 79 56 finger
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100 20892 192.168.1.5 36398 <- 192.168.1.1 79 54 finger
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100 20892 192.168.1.5 36398 <- 192.168.1.1 79 606 finger
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100 20892 192.168.1.5 36398 -> 192.168.1.1 79 54 finger
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100 20892 192.168.1.5 36398 <- 192.168.1.1 79 54 finger
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100 20892 192.168.1.5 36398 -> 192.168.1.1 79 54 finger
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100 20892 192.168.1.5 36398 -> 192.168.1.1 79 54 finger
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100 20892 192.168.1.5 36398 <- 192.168.1.1 79 54 finger
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0 242 192.168.1.5 23 <- 192.168.1.1 54224 54 inetd
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0 242 192.168.1.5 23 -> 192.168.1.1 54224 54 inetd
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0 242 192.168.1.5 23 <- 192.168.1.1 54224 54 inetd
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0 242 192.168.1.5 23 <- 192.168.1.1 54224 78 inetd
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0 242 192.168.1.5 23 -> 192.168.1.1 54224 54 inetd
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0 20893 192.168.1.5 23 -> 192.168.1.1 54224 57 in.telnetd
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0 20893 192.168.1.5 23 <- 192.168.1.1 54224 54 in.telnetd
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0 20893 192.168.1.5 23 -> 192.168.1.1 54224 78 in.telnetd
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0 20893 192.168.1.5 23 <- 192.168.1.1 54224 57 in.telnetd
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0 20893 192.168.1.5 23 -> 192.168.1.1 54224 54 in.telnetd
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0 20893 192.168.1.5 23 <- 192.168.1.1 54224 54 in.telnetd
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0 20893 192.168.1.5 23 -> 192.168.1.1 54224 60 in.telnetd
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0 20893 192.168.1.5 23 <- 192.168.1.1 54224 63 in.telnetd
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0 20893 192.168.1.5 23 -> 192.168.1.1 54224 54 in.telnetd
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0 20893 192.168.1.5 23 <- 192.168.1.1 54224 60 in.telnetd
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0 20893 192.168.1.5 23 -> 192.168.1.1 54224 60 in.telnetd
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0 20893 192.168.1.5 23 <- 192.168.1.1 54224 60 in.telnetd
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0 20893 192.168.1.5 23 -> 192.168.1.1 54224 72 in.telnetd
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[...]
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As new connections are made, each of the TCP packets are traced along with
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the UID, PID and command name.
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tcpsnoop has many options, for example here we use "-v" to print times,
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# tcpsnoop -v
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STRTIME UID PID LADDR LPORT DR RADDR RPORT SIZE CMD
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2005 Jul 11 21:21:19 0 242 192.168.1.5 79 <- 192.168.1.1 49001 54 inetd
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2005 Jul 11 21:21:19 0 242 192.168.1.5 79 -> 192.168.1.1 49001 54 inetd
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2005 Jul 11 21:21:19 0 242 192.168.1.5 79 <- 192.168.1.1 49001 54 inetd
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2005 Jul 11 21:21:19 0 242 192.168.1.5 79 <- 192.168.1.1 49001 56 inetd
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2005 Jul 11 21:21:19 0 242 192.168.1.5 79 -> 192.168.1.1 49001 54 inetd
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2005 Jul 11 21:21:19 0 23181 192.168.1.5 79 -> 192.168.1.1 49001 444 in.fingerd
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2005 Jul 11 21:21:19 0 23181 192.168.1.5 79 -> 192.168.1.1 49001 54 in.fingerd
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2005 Jul 11 21:21:19 0 23181 192.168.1.5 79 <- 192.168.1.1 49001 54 in.fingerd
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2005 Jul 11 21:21:19 0 23181 192.168.1.5 79 <- 192.168.1.1 49001 54 in.fingerd
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2005 Jul 11 21:21:19 0 23181 192.168.1.5 79 <- 192.168.1.1 49001 54 in.fingerd
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2005 Jul 11 21:21:19 0 23181 192.168.1.5 79 -> 192.168.1.1 49001 54 in.fingerd
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[...]
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