iron box

n. [Unix/Internet] A special environment set up to trap a cracker logging in
over remote connections long enough to be traced. May include a modified
shell restricting the cracker's movements in unobvious ways, and bait files
designed to keep him interested and logged on. See also back door , firewall
machine , Venus flytrap , and Clifford Stoll's account in The Cuckoo's Egg
of how he made and used one (see the Bibliography in Appendix C). Compare
padded cell , honey pot.