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  • tcpdump-04.txt 1.28 KiB
    cassini/root# tcpdump -n -i lo -A port 1234
    tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
    listening on lo, link-type EN10MB (Ethernet), snapshot length 262144 bytes
    12:34:11.379210 IP 127.0.0.1.55462 > 127.0.0.1.1234: Flags [P.], seq 3414759284:3414759291, ack 1205734118, win 512, options [nop,nop,TS val 2171771385 ecr 2171633313], length 7
    E..;4Q@.@..j...............tG.
    ....../.....
    .r...p~.Hallo.
    
    12:34:11.379228 IP 127.0.0.1.1234 > 127.0.0.1.55462: Flags [.], ack 7, win 512, options [nop,nop,TS val 2171771385 ecr 2171771385], length 0
    E..4!A@.@...............G.
    ....{.....(.....
    .r...r..
    12:34:23.626460 IP 127.0.0.1.1234 > 127.0.0.1.55462: Flags [P.], seq 1:12, ack 7, win 512, options [nop,nop,TS val 2171783632 ecr 2171771385], length 11
    E..?!B@.@..u............G.
    ....{.....3.....
    .r...r..Hier auch.
    
    12:34:23.626469 IP 127.0.0.1.55462 > 127.0.0.1.1234: Flags [.], ack 12, win 512, options [nop,nop,TS val 2171783632 ecr 2171783632], length 0
    E..44R@.@..p...............{G.
    ......(.....
    .r...r..
    
    8< ---------------------------------------------------------------------
    
    cassini/home/peter> nc localhost 1234
    Hallo?
    Hallo.
    Hier auch.
    
    8< ---------------------------------------------------------------------
    
    cassini/home/peter> nc -p 1234 -l
    Hallo?
    Hallo.
    Hier auch.