A quick search on google for Arup Nanda listener lead me to: http://www.petefinnigan.com/weblog/archives/00000158.htm Don't know whether this is the same paper, but starting at Pete's site ain't bad at all on the topic of security. Best regards, Carel-Jan Engel === If you think education is expensive, try ignorance. (Derek Bok) === On Fri, 2005-12-02 at 00:06 +0100, Eric Buddelmeijer wrote: > There is a good article in an old issue of oracle magazine by Arup Nanda > that I used when I set up listener protection. But I only have a hard copy. > And of course not with me at the moment. > > Regards, > Eric.