Tom, Thanks for the reply, packet filtering is enabled. I realized that I was pinging from the ISA server itself using a client via dialup this was not possible! Thanks very much! With Kind Regards, Khan ____________________________ Faizal Khan MIS Manager Guyana Forestry Commission 1 Water Street, Kingston, Georgetown, GUYANA. Tel : + (592) 226-7272 Fax : + (592) 226-8956 Email: Forestry.mis@xxxxxxxxxxxxxxxxx Website: http://www.forestry.gov.gy <http://www.forestry.gov.gy/> -----Original Message----- From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx] Sent: Thursday, February 06, 2003 12:22 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: Blocking Incoming Ping http://www.ISAserver.org Hi Faizal, By default, you cannot ping the external interface from an external client. If you can, then packet filtering has not been enabled. Enable it now. HTH, Tom Thomas W Shinder <http://www.isaserver.org/shinder> www.isaserver.org/shinder ISA Server and Beyond: <http://tinyurl.com/1jq1> http://tinyurl.com/1jq1 Configuring ISA Server: <http://tinyurl.com/1llp> http://tinyurl.com/1llp