forging headers (with more header information)

[Lee Tien]

My apologies.  I followed Tim's advice and turned on verbose headers, and
this is what I got.

Lee


Return-Path: freeh at fbi.gov
Received: from nimitz.MIT.EDU (NIMITZ.MIT.EDU [18.80.0.161]) by well.com
(8.6.12/8.6.12) with SMTP id NAA20123 for <tien at well.sf.ca.us>; Tue, 24 Oct
1995 13:06:23 -0700
From: freeh at fbi.gov
Message-Id: <199510242006.NAA20123 at well.com>
Received: from sgigate.SGI.COM by nimitz.MIT.EDU with SMTP
        (1.37.109.4/16.2) id AA00301; Tue, 24 Oct 95 16:07:08 -0400
Date: Tue, 24 Oct 95 16:07:08 -0400
Apparently-To: tien at well.sf.ca.us
X-UIDL: 814570964.056

> How difficult is it to forge headers?  How difficult is it to trace a
> message to the actual sender if the header is forged?

Not very difficult at all (to forge, that is).  This is a quick and dirty
example that should be somewhat traceable.  If you want pointers on how to
trace it, post the whole thing, including headers, to cypherpunks.

Louis