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IPSEND(1)                   General Commands Manual                  IPSEND(1)



NAME
       ipsend - sends IP packets

SYNOPSIS
       ipsend [ -dITUv ] [ -i <interface> ] [ -f <offset> ] [ -g <gateway> ] [
       -m <MTU> ] [ -o <option> ] [ -P <protocol> ] [ -s <source> ] [ -t
       <dest. port> ] [ -w <window> ] <destination> [TCP-flags]

DESCRIPTION
       ipsend can be compiled in two ways.  The first is used to send one-off
       packets to a destination host, using command line options to specify
       various attributes present in the headers.  The destination must be
       given as the last command line option, except for when TCP flags are
       specified as a combination of A, S, F, U, P and R, last.

       The other way it may be compiled, with DOSOCKET defined, is to allow an
       attempt at making a TCP connection using a with ipsend resending the
       SYN packet as per the command line options.

OPTIONS
       -d     enable debugging mode.

       -f <offset>
              The -f allows the IP offset field in the IP header to be set to
              an arbitrary value, which can be specified in decimal or
              hexadecimal.

       -g <gateway>
              Specify the hostname of the gateway through which to route
              packets.  This is required whenever the destination host isn't
              directly attached to the same network as the host from which
              you're sending.

       -i <interface>
              Set the interface name to be the name supplied.

       -m <MTU>
              Specify the MTU to be used when sending out packets.  This
              option allows you to set a fake MTU, allowing the simulation of
              network interfaces with small MTU's without setting them so.

       -o <option>
              Specify options to be included at the end of the IP header.  An
              EOL option is automatically appended and need not be given.  If
              an option would also have data associated with it (source as an
              IP# for a lsrr option), then this will not be initialised.

       -s <source>
              Set the source address in the packet to that provided - maybe
              either a hostname or IP#.

       -t <dest.port>
              Set the destination port for TCP/UDP packets.

       -w <window>
              Set the window size for TCP packets.

       -I     Set the protocol to ICMP.

       -P <protocol>
              Set the protocol to the value given.  If the parameter is a
              name, the name is looked up in the /etc/protocols file.

       -T     Set the protocol to TCP.

       -U     Set the protocol to UDP.

       -v     enable verbose mode.

SEE ALSO
       ipsend(1), ipresend(1), iptest(1), protocols(4), bpf(4), dlpi(7p)

DIAGNOSTICS
       Needs to be run as root.

BUGS
       If you find any, please send email to me at darrenr@pobox.com



                                                                     IPSEND(1)