Yesterday I was trying to block MSN Messenger from ISA 2000 Server in Cached mode. I have done that before on ISA 2000 Server in Integrated mode using MSNIM.vbs script available from ISA Server Tools Repository – http://isatools.org/ (Thanks Jim for excellent tools site).
When I ran the script, it gives the following message;
Creating (or updating) the FW App Settings
Creating (or updating) the protocol definition
Creating (or updating) the protocol rule
Error 0x80040361; At least one protocol must be specified. – while trying to set ISA up for MSN Messenger
In Part -II we will see a cheeky method to block MSN Messenger from ISA 2000 Server.
Instant Messaging with ISA Server
Common Application Signatures
ISA Server Tools Repository
Microsoft ISA Server Firewall and Cache resource site
Scripts for ISA Server
Dr. Tom Shinder’s ISA Firewall Space
ISA Server Blogs