Our customer reports a problem with FTPS. He has a server in Passive mode and FTPS. Our client can connect the server from within internal network, but cannot connect from outside network (outside of a company). But he claims that the FileZilla client can connect the server without any problems.
asked Nov 09 '16 at 09:09
This is a common question because often there are many barriers to overcome in order to establish the data connection for an FTP upload or download.
The quick answer is this: If you can do it in FileZilla, then there are Chilkat FTP2 properties that provide the flexibility to do the same with Chilkat. There are no features lacking in Chilkat that cannot handle a particular situation (where FileZilla works, but Chilkat does not).
Here's a checklist of things to try, in the order of most common / quickest to test.