nemesis-icmp(1) (usm)
nemesis-icmp(1) General Commands Manual (usm) nemesis-icmp(1)

NAME

nemesis-icmpICMP Protocol (The Nemesis Project)

SYNOPSIS

nemesis-icmp [-vZ?] [-a TIME] [-b ADDR] [-B ADDR] [-c CODE] [-d IFNAME] [-D ADDR] [-e ID] [-f OFFSET] [-F OPT] [-G ADDR] [-H MAC] [-i TYPE] [-I ID] [-j TOS] [-J TTL] [-l FILE] [-m MASK] [-M MAC] [-o TIME] [-O FILE] [-p PROTO] [-P FILE] [-q MODE] [-r TIME] [-s NUM] [-S ADDR] [-t TOS] [-T TTL]

DESCRIPTION

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

ICMP OPTIONS

-c CODE
Specify the ICMP code within the ICMP header.
-e ID
Specify the ICMP ID within the ICMP header.
-G ADDR
Specify the preferred gateway IP address for ICMP redirect injection.
-i TYPE
Specify the ICMP type within the ICMP header.
-m MASK
Specify the IP address mask for ICMP address mask packets.
-P FILE
This will cause nemesis-icmp to use the specified payload file as the payload when injecting ICMP packets. For packets injected using the raw interface (where -d is not used), the maximum payload size is 65387 bytes. For packets injected using the link layer interface (where -d IS used), the maximum payload size is 1352 bytes. Payloads can also be read from stdin by specifying -P- instead.
Windows systems are limited to a maximum payload size of 1352 bytes for ICMP packets.
-q MODE
Specify the ICMP injection mode to use when injecting. Valid modes are:
-qE
ICMP echo
-qM
ICMP address mask
-qU
ICMP unreachable
-qX
ICMP time exceeded
-qR
ICMP redirect
-qT
ICMP timestamp
Only one mode may be specified at a time.
-s NUM
Specify the ICMP sequence number within the ICMP header.
-v
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.

ICMP TIMESTAMP OPTIONS

-a TIME
Specify the ICMP timestamp request reply transmit time (the time a reply to an ICMP timestamp request was transmitted) within the ICMP timestamp header.
-o TIME
Specify the ICMP timestamp request transmit time (the time an ICMP timestamp request was transmitted) within the ICMP timestamp header.
-r TIME
Specify the ICMP timestamp request reply received time (the time a reply to an ICMP timestamp request was received) within the ICMP timestamp header.

ICMP ORIGINAL DATAGRAM OPTIONS

-b ADDR
Specify the original destination IP address within an ICMP unreachable, redirect or time exceeded packet.
-B ADDR
Specify the original source IP address within an ICMP unreachable, redirect or time exceeded packet.
-f OPT
Specify the original IP fragmentation options within an ICMP unreachable, redirect or time exceeded packet. For more information, see the -F command line switch.
-j TOS
Specify the original IP type of service (TOS) within an ICMP unreachable, redirect or time exceeded packet.
-J TTL
Specify the original IP time to live (TTL) within an ICMP unreachable, redirect or time exceeded packet.
-l FILE
This will cause nemesis-icmp to use the specified IP options file as the options when building the original IP header for the injected ICMP unreachable, redirect or time exceeded 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.
-p PROTO
Specify the IP protocol within an ICMP unrechable, redirect or time exceeded packet.

IP OPTIONS

-D ADDR
Specify the destination IP address within the IP header.
-F OPT
Specify the fragmentation options in the IP header:
-FD
don't fragment
-FM
more fragments
-FR
reserved flag
-F offset
 
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 ID
Specify the IP ID within the IP header.
-O FILE
This will cause nemesis-icmp 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.
-S ADDR
Specify the source IP address within the IP header.
-t 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 TTL
Specify the IP time-to-live (TTL) in the IP header.

DATA LINK OPTIONS

-d IFNAME
Specify the name (for UNIX-like systems) or the number (for Windows systems) of the IFNAME to use (eg. fxp0, eth0, hme0, 1).
-H MAC
Specify the source MAC address, (XX:XX:XX:XX:XX:XX).
-M MAC
Specify the destination MAC address, (XX:XX:XX:XX:XX:XX).
-Z
Lists the available network interfaces by number for use in link-layer injection.
NOTE: This feature is only relevant to Windows systems.

DIAGNOSTICS

nemesis-icmp returns 0 on a successful exit, 1 if it exits on an error.

SEE ALSO

nemesis-arp(1), nemesis-dhcp(1), nemesis-dns(1), nemesis-ethernet(1), nemesis-igmp(1), nemesis-ip(1), nemesis-ospf(1), nemesis-rip(1), nemesis-tcp(1), nemesis-udp(1).

AUTHORS

Mark Grimes <mark@stateful.net> and
Jeff Nathan <jeff@snort.org>

BUGS

Please report at https://github.com/troglobit/nemesis/issues
December 6, 2019