I'm not sure if I can accurately describe this problem, but I'll try:
A user has come to me with a Windows 2000 laptop, Service Pack 3. It is network connectively to our LAN, as well as the ability to browse out through our firewall to web and ftp sites but only if Internet Explorer is used to do so.
If I try to use any other program such as the CMD prompt "ftp" and "telnet," or in specific case Dreamweaver's Site Manager FTP to connect to a remote location, I get errors such as:
: connect:Host is unreachable *or* Connection timed out
Telnet: Could not open a connect to host on port 23 : Connect failed
Dreamweaver: Could not connect, the connection to host failed.
There is no personal firewall installed on this PC; there is in fact a firewall client installed to allow it to be granted full access through our ISA server (this works on all other machines). I have uninstalled and reinstalled TCP/IP from the machine. I have laid SP3 back down on the machine.
Basically, it seems to me like ports are failing to be opened unless it is done through IE (which of course is configured within LAN Connection Settings to use the ISA server as a firewall) via http://
usage . Otherwise, all other programs which require external access fail. What could be causing this issue, and how can it be resolved?