


NEMESIS-UDP(1)					   NEMESIS-UDP(1)


NAME
       nemesis-udp - UDP Protocol (The Nemesis Project)

SYNOPSIS
       nemesis-udp  [-v?]  [-d Ethernet-device ] [-D destination-
       IP-address ] [-F fragmentation-offset  ]	 [-H  source-MAC-
       address	]  [-I	IP-ID ] [-M destination-MAC-address ] [-O
       IP-options-file ] [-P payload-file ] [-S source-IP-address
       ] [-t IP-TOS ] [-T IP-TTL ] [-x source-port ] [-y destina-
       tion-port ]

DESCRIPTION
       The Nemesis Project is designed	to  be	a  command  line-
       based, portable human IP stack for UNIX like systems.  The
       suite is broken down by protocol,  and  should  allow  for
       useful  scripting  of  injected packet streams from simple
       shell scripts.

       nemesis-udp provides an interface to craft and inject  UDP
       packets	allowing the user to specify any portion of a UDP
       packet as well as lower-level IP packet information.

UDP Options
       -P payload-file
	      This will case nemesis-udp  to  use  the	specified
	      payload-file  as	the  payload  when  injecting UDP
	      packets.	For packets injected using the raw inter-
	      face  (where  -d	is not used), the maximum payload
	      size is 65467 bytes.  For	 packets  injected  using
	      the  link	 layer	interface (where -d IS used), the
	      maximum payload size is 1432 bytes.   Payloads  can
	      also  be	read  from  stdin  by  specifying  '-P -'
	      instead of a payload file.

       -v verbose-mode
	      Display the injected packet in human readable form.
	      Use  twice to see a hexdump of the injected packet.

       -x source-port
	      Specify the source-port within the UDP header.

       -y destination-port
	      Specify the destination-port within the UDP header.

IP OPTIONS
       -D destination-IP-address
	      Specify  the  destination-IP-address  within the IP
	      header.

       -F fragmentation-offset
	      Specify  the  fragmentation-offset  within  the  IP
	      header.





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NEMESIS-UDP(1)					   NEMESIS-UDP(1)


       -I IP-ID
	      Specify the IP-ID within the IP header.

       -O IP-options-file
	      This  will  cause	 nemesis-dns to use the specified
	      IP-options-file as the options when building the IP
	      header for the injectect packet.	IP options can be
	      up to 40 bytes in length.	 The IP options file must
	      be created manually based upon the desired options.
	      IP options can also be read from stdin by	 specify-
	      ing '-O -' instead of an IP-options-file.

       -S source-IP-address
	      Specify the source-IP-address within the IP header.

       -t IP-TOS
	      Specify the IP-type-of-service (TOS) within the  IP
	      header.  Valid type of service values:

	      2	 (Minimize monetary cost)
	      4	 (Maximize reliability)
	      8	 (Maximize throughput)
	      24 (Minimize delay)

	      Note: type of service values cannot be combined.

       -T IP-TTL
	      Specify  the  IP-time-to-live  (TTL)  within the IP
	      header.

DATA LINK OPTIONS
       -d Ethernet-device
	      Specify the name of the Ethernet-device to use (eg.
	      ne0, fxp0, eth0).

       -H source-MAC-address
	      Specify the source-MAC-address (XX:XX:XX:XX:XX:XX).

       -M destination-MAC-address
	      Specify	      the	   defination-MAC-address
	      (XX:XX:XX:XX:XX:XX).

DIAGNOSTICS
       Nemesis-udp  returns 0 on a successful exit, 1 if it exits
       on an error.

BUGS
       Send  concise  and  clearly   written   bug   reports   to
       jeff@snort.org

AUTHOR
       Jeff Nathan <jeff@snort.org>

       Originally developed by Mark Grimes <mark@stateful.net>



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NEMESIS-UDP(1)					   NEMESIS-UDP(1)


SEE ALSO
       nemesis-arp(1), nemesis-dns(1), nemesis-ethernet(1), neme-
       sis-icmp(1),  nemesis-igmp(1),	nemesis-ip(1),	 nemesis-
       ospf(1), nemesis-rip(1), nemesis-tcp(1)





















































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