A customer is running 2 different ISA servers. Each ISA is dedicated to a different ISP.
1. ISA 2000 that allows some specific users to access everything. Doesn't filter any thing. traffic pass through Cisco pix firewall. users can access external FTP sites. that verifies that FTP traffic (port 20 and 21 ) is allowed from pix firewall.
2. MS ISA 2004 Standard edition with SP3 from here users can access HTTP,HTTPs but can't access external FTP sites. some ISA clients are web proxy and firewall. initially users can access ftp sites ie, ftp://ftp.symentic.com
now if a user try this IE returns following error.
Windows cannot access this folder. Make sure you typed the file name correctly and that you have permission to access the folder.
The server name or address could not be resolved
on isa 2004 a rule is made that allows external ftp traffic.
what could be the problem?
any suggestion would highly be appreciated!