There is an option in ISA2004 to "Allow non-encrypted Firewall client connections". Since the ISA2000 client doesn't support encryption, disabling this (disabled by default) would prohibit those clients from working. ________________________________ From: Paul Crisp [mailto:PCrisp@xxxxxxxxxxxxxxxxx] Sent: Monday, February 28, 2005 11:22 To: [ISAserver.org Discussion List] Subject: [isalist] RE: RES: Firewall Client Question http://www.ISAserver.org I kind of get ya Tom, but this is weird. The client machine had an old ISA 2000 Firewall Client. I have removed this and installed the 2004 Firewall Client and now the SB Client software works fine when firewall client is enabled ? Paul Crisp Snr Network Support Analyst Telephone: 020 7 827 5201 Email: pcrisp@xxxxxxxxxxxxxxxxx