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dsniff (8)
  • >> dsniff (8) ( Linux man: Команды системного администрирования )
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    NAME

    dsniff
    -
    password sniffer
     
    

    SYNOPSIS

    
    
    dsniff [-c] [-d] [-m] [-n] [-i
    interface] [-s snaplen] [-f services]
    [-t trigger[,...]]]
    [-r|-w savefile] [expression]
     
    

    DESCRIPTION

    dsniff is a password sniffer which handles FTP, Telnet, SMTP, HTTP, POP, poppass, NNTP, IMAP, SNMP, LDAP, Rlogin, RIP, OSPF, PPTP MS-CHAP, NFS, VRRP, YP/NIS, SOCKS, X11, CVS, IRC, AIM, ICQ, Napster, PostgreSQL, Meeting Maker, Citrix ICA, Symantec pcAnywhere, NAI Sniffer, Microsoft SMB, Oracle SQL*Net, Sybase and Microsoft SQL protocols.

    dsniff automatically detects and minimally parses each application protocol, only saving the interesting bits, and uses Berkeley DB as its output file format, only logging unique authentication attempts. Full TCP/IP reassembly is provided by libnids(3).

    I wrote dsniff with honest intentions - to audit my own network, and to demonstrate the insecurity of cleartext network protocols. Please do not abuse this software.  

    OPTIONS

    -c
    Perform half-duplex TCP stream reassembly, to handle asymmetrically routed traffic (such as when using arpspoof(8) to intercept client traffic bound for the local gateway).
    -d
    Enable debugging mode.
    -m
    Enable automatic protocol detection.
    -n
    Do not resolve IP addresses to hostnames.
    -i interface
    Specify the interface to listen on.
    -s snaplen
    Analyze at most the first snaplen bytes of each TCP connection, rather than the default of 1024.
    -f services
    Load triggers from a services file.
    -t trigger[,...]
    Load triggers from a comma-separated list, specified as port/proto=service (e.g. 80/tcp=http).
    -r savefile
    Read sniffed sessions from a savefile created with the -w option.
    -w file
    Write sniffed sessions to savefile rather than parsing and printing them out.
    expression
    Specify a tcpdump(8) filter expression to select traffic to sniff.

    On a hangup signal dsniff will dump its current trigger table to dsniff.services.  

    FILES

    /usr/local/lib/dsniff.services
    Default trigger table
    /usr/local/lib/dsniff.magic
    Network protocol magic
     

    SEE ALSO

    arpspoof(8), libnids(3), services(5), magic(5)  

    AUTHOR

    Dug Song <dugsong@monkey.org>
    
     

    BUGS

    dsniff's automatic protocol detection feature is based on the classic file(1) command by Ian Darwin, and shares its historical limitations and bugs.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    FILES
    SEE ALSO
    AUTHOR
    BUGS


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