$Id: README,v 1.8 2001/04/16 16:03:52 slay Exp $

README for SING v1.1

"This program is distributed under the GNU GPL license. See the COPYING file for more details."

SING stands for 'Send ICMP Nasty Garbage' :).

Sing is a little tool that sends ICMP packets fully customized from command line. The main purpose is to replace/complement the niceful ping command with certain enhancements as:

Send fragmented packets (Linux and BSD).
Send monster packets > 65534 (Linux and BSD).
Send/read IP spoofed packets.(Libpcap included in distribution).
Send/read Ethernet spoofed packets.(Libnet included in distribution).
Send many ICMP Information types in addition to the ECHO REQUEST type sent by default as Address Mask Request, Timestamp, Information Request, Router Solicitation and Router Advertisement.
Send many ICMP error types: Redirect, Source Quench, Time Exceeded, Destination Unreach and Parameter Problem.
Send to host with Loose or Strict Source Routing.
Use fingerprinting techniques to discover remote OOSS.
Send ICMP packets emulating certain OS: Cisco, Solaris, Linux, Shiva, Unix and Window$ at the moment.

The ICMP packet types accepted on the command line follows:

Value Extended Value Meaning

-echo   --echo_req        Echo Request. Sent by default.
-reply                    Echo Reply.
-mask   --mask_req        Address Mask Request.
-tstamp --timestamp       Timestamp.

-rts --router_solicit Router Solicitation (Router Discovery). -rta --router_advert Router Advertisement (Router Discovery).

-du     --dest_unreach    Destination Unreach.
-info   --info_req        Information Request.
-red    --redirect        Redirect.
-param  --param_problem   Parameter Problem.
-sq     --src_quench      Source Quench.
-tx     --time_exc        Time Exceeded.

This keys can be combined with multiple options like ICMP code (-x code), no resolve (-n), garbage size bytes (-s bytes|max), etc. See the man page for examples with deep details.

RETURN VALUES

Value Meaning

0      Program finished OK
1      General error
2      Sent packet OK but received no response
3      Out of memory

IMPORTANT:
I released this program for evaluation of TCP/IP stacks ONLY. Take it like a little tool to improve your system security, not for cracking, disturbing or flooding another systems. This can be a crime on certain countries.

I like to read your opinions, suggestions, bugs etc. about this program.

My e-mail address is:

aandres@s21sec.com

Feel free to contact. :)

Enjoy!

Ooooooops! The last thing... sorry for my bad english! :)

Madrid, 2001. Slay.