I’m trying to use Filezilla CLient 3.2.1 to make an FTPES connection to an ftp site.
I have ISA 2000 as my firewall, when i use FTPES, the connection times out when initializing TLS, here is a copy of the log:
===============================================
Status: Resolving address of ftp.******.net
Status: Connecting to *.*.*.*:21…
Status: Connection established, waiting for welcome message…
Response: 220 Microsoft FTP Service
Command: AUTH TLS
Response: 234 AUTH command ok. Expecting TLS Negotiation.
Status: Initializing TLS…
Error: Connection timed out
Error: Could not connect to server
=============================================
when i looked at the packets captured, the last response from the ftp site to my client is : “451 the parameter is incorrect”
do i have to open outbound ports other than port 21?
any help is much appreciated.
thanks.