Failed SSL/TLS negotiation, disconnected

MxxCon · 10-24-2011, 07:55 AM

Your 1st log snippet shows that your ftp server does not understand "AUTH SSL" command. Are you sure your server support explicit SSL and if so, have you configured it on your server?

Your 2nd log snippet shows that you provided either wrong username or password.

If any ports were blocked, you wouldn't be able to connect on those ports at all.

If you suspect firewall is somehow messing with your connection, try to move your ftp server to port other than 21 and see if that makes any difference.

mong.gregory · 10-24-2011, 05:20 PM

Hi MxxCon,

I definitely have SSL turned on and supported. I can connect to the server via a non-work PC. I'm also 100% sure that the password was correct. It's only from the work PC (behind the work firewall, etc) that I have trouble connecting. I was logged into my work network via VPN, where it was failing to connect. As soon as I disconnect the VPN, then I can connect without any issues.

I just find it very strange that it only partially fails. It seems to allow the connection, but fails on the authentication as if only certain commands are being rejected/blocked.

I haven't tried a different port yet, because I'm not sure which ones are actually open from here. I'll give that a go.

Edit: I've now tried multiple different ports, and none of them work. They all have the same problem...

-Greg