We have all but ports 80 and 443 blocked in our firewall. Normal outbound FTP connections work, however FTP SSL connections do not. I haven't found the definitive description how FTP SSL sends an inbound request (thus blocked by the firewall) but regular FTP does not.
IS there a configuration of Core FTP (we CANNOT change the firewall settings) that will allow the connection to the FTP SSL server to occur.
When we try to connect we get this:
Connect socket #1144 to 152.19.53.92, port 21...
220 svftp X2 WS_FTP Server 3.1.4 (1138102249)
AUTH SSL
234 SSL enabled and waiting for negotiation
SSL/TLS error - 0, SSL error - 5
SSL Connection not established
Our current version of Core FTP Lite is 1.3 build 1402. I don't think we could trust a publically avail FTP proxy server.
Thanks!
Ftp SSL and Firewall
FTP SSL 2 firewalls incompatibility
I've read some more and it appears if both computers are behind firewalls and FTP SSL is used the requests arent encrypted and the firewalls wont know where to send the requests.
The only solutions are:
1) Putting a hole in the firewall for this connection (which we can't/shouldn't do)
2) Putting hte FTP server outside the firewall (which we don't control)
3) Use another way to encrypt data other than SSL
WindowsSSL didn't help.
The only solutions are:
1) Putting a hole in the firewall for this connection (which we can't/shouldn't do)
2) Putting hte FTP server outside the firewall (which we don't control)
3) Use another way to encrypt data other than SSL
WindowsSSL didn't help.