Blocking MSN Messenger from ISA 2000 Server - Part I
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
I quickly wrote to ISA Server guru Jim Harrison and he replied - "ISA 2000 can't block MSN Messenger using MSNIM.vbs script in cache mode".
In Part -II we will see a cheeky method to block MSN Messenger from ISA 2000 Server.
MORE INFORMATION
Instant Messaging with ISA Server
http://www.microsoft.com/technet/prodtechnol/isa/2000/maintain/isaimsec.mspx
Common Application Signatures
http://www.microsoft.com/technet/prodtechnol/isa/2004/plan/commonapplicationsignatures.mspx
ISA Server Tools Repository
http://isatools.org/
Microsoft ISA Server Firewall and Cache resource site
http://www.isaserver.org/
Scripts for ISA Server
http://www.isascripts.org/
Dr. Tom Shinder's ISA Firewall Space
http://spaces.msn.com/drisa/
ISA Server Blogs
http://www.microsoft.com/isaserver/community/default.mspx
ISA Server Community (MVP's)