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

 o Send fragmented packets.

 o Send monster packets > 65534.

 o Send/read spoofed packets.

 o 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.

 o Send many ICMP error types: Redirect, Source Quench, Time
   Exceeded, Destination Unreach and Parameter Problem.

 o Send to host with Loose or Strict Source Routing.

 o Use	little fingerprinting techniques to discover Window$
   or Solaris boxes.

 o Send ICMP packets emulating certain OS:  Cisco,  Solaris,
   Linux, Shiva, Unix and Window$ at the moment.
