Hi there I've just been reading http://support.microsoft.com/default.aspx?scid=kb;en-us;283213 and noticed the section on "Blocking and Logging Outbound ICMP Traffic". Now this article was last reviewed on 23 April 2003 so I presume that it's info is pretty current. But what I don't understand is why I would want to look at installing the ISAHF51.EXE and then creating the BlockOutboundICMP registry key, when simply disabling the default "Allow Outbound ICMP" Packet Filter rule would appear to do the same thing.? Am I missing something here? Cheers William R. --------------------------------------------------------------------- Everything in this e-mail and attachments relating to the official business of Columbus Stainless is proprietary to the company. It is confidential, legally privileged and protected by law. Columbus Stainless does not own and endorse any other content. Views and opinions are those of the sender unless clearly stated as being that of Columbus Stainless. The person addressed in the e-mail is the sole authorised recipient. Please notify the sender immediately if it has unintentionally reached you and do not read, disclose or use the content in any way. Whilst all reasonable steps are taken to ensure the accuracy and integrity of information and data transmitted electronically and to preserve the confidentiality thereof, no liability or responsibility whatsoever is accepted if information or data is,for whatever reason, corrupted or does not reach its intended destination. ---------------------------------------------------------------------