NEMESIS-IGMP(1)                                                NEMESIS-IGMP(1)



NAME
       nemesis-igmp - IGMP Protocol (The Nemesis Project)

SYNOPSIS
       nemesis-igmp [-vZ?] [-c IGMP-code ] [-d Ethernet-device ] [-D
       destination-IP-address ] [-F fragmentation-options ] [-H source-MAC-
       address ] [-i IGMP-group-IP-address ] [-I IP-ID ] [-M destination-MAC-
       address ] [-O IP-options-file ] [-p IGMP-type ] [-P payload-file ] [-S
       source-IP-address ] [-t IP-tos ] [-T IP-TTL ]

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

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

IGMP Options
       -c IGMP-code (unused field)
              Specify the IGMP-code or the value for the one-byte field
              following the IGMP type field.  This value is normally unused.

       -i IGMP-group-IP-address
              Specify the IGMP-group-IP-address within the IGMP header.

       -p IGMP-type
              Specify the IGMP-type within the IGMP header.  Valid IGMP-type
              values:

              17 (IGMP membership query)
              18 (IGMP V1 membership report)
              22 (IGMP V2 membership report)
              23 (IGMP leave group)

              Only one type may be specified at a time.

       -P payload-file
              This will case nemesis-igmp to use the specified payload-file as
              the payload when injecting IGMP packets.  For packets injected
              using the raw interface (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.

              Windows systems are limited to a maximum payload size of 1432
              bytes for IGMP packets.

       -v verbose-mode
              Display the injected packet in human readable form.  Use twice
              to see a hexdump of the injected packet with printable ASCII
              characters on the right.  Use three times for a hexdump without
              decoded ASCII.

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

       -F fragmentation-options (-F[D],[M],[R],[offset])
              Specify the fragmentation options:

              -FD (don't fragment)
              -FM (more fragments)
              -FR (reserved flag)
              -F <offset>

              within the IP header.  IP fragmentation options can be specified
              individually or combined into a single argument to the -F
              command line switch by separating the options with commas (eg.
              '-FD,M') or spaces (eg. '-FM 223').  The IP fragmentation offset
              is a 13-bit field with valid values from 0 to 8189.  Don't
              fragment (DF), more fragments (MF) and the reserved flag
              (RESERVED or RB) are 1-bit fields.

              NOTE: Under normal conditions, the reserved flag is unset.

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

       -O IP-options-file
              This will cause nemesis-igmp to use the specified IP-options-
              file as the options when building the IP header for the injected
              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 specifying
              '-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: Under normal conditions, only one type of service is set
              within a packet.  To specify multiple types, specify the sum of
              the desired values as the type of service.

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

DATA LINK OPTIONS
       -d Ethernet-device
              Specify the name (for UNIX-like systems) or the number (for
              Windows systems) of the Ethernet-device to use (eg. fxp0, eth0,
              hme0, 1).

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

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

       -Z list-network-interfaces
              Lists the available network interfaces by number for use in
              link-layer injection.

              NOTE: This feature is only relevant to Windows systems.

DIAGNOSTICS
       Nemesis-igmp 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>

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



                                  16 May 2003                  NEMESIS-IGMP(1)
