IPSEND(1)                                                            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  hexa-
              decimal.

       -g <gateway>
              Specify the hostname of the gateway through which to route pack-
              ets.  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 associ-
              ated 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
       ipresend(1), iptest(1), bpf(4), protocols(5), ipsend(5)

DIAGNOSTICS
       Needs to be run as root.

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



                                                                     IPSEND(1)
