topic Re: No longer able to connect to FTP servers using TLS in Broadband

No longer able to connect to FTP servers using TLS

bigjim — Thu, 21 Sep 2023 11:30:41 GMT

Hi there

I've had three home broadband for over a year now. I'm a web developer that works from home and sometimes needs to transfer various files to FTP servers.

Something has changed within the last week as I am no longer able to securely connect to any FTP server using TLS. It's worked fine for the past year. I can FTP via connecting to my non-three phone as a hotspot, so it's not a hardware or software issue.

This is a major issue for me.

Please can someone assist.

Re: No longer able to connect to FTP servers using TLS

bigjim — Thu, 21 Sep 2023 12:57:13 GMT

I've spoken to support, who after an hour were still telling me to restart my router and were clearly reading from a script.

Re: No longer able to connect to FTP servers using TLS

Clever-Trevor — Thu, 21 Sep 2023 15:38:36 GMT

I recall TLS 1.0 & 1.1 now disablement active - ( maybe need to update the version of change ) - this is my guess

Re: No longer able to connect to FTP servers using TLS

rickyg1999 — Thu, 21 Sep 2023 16:09:08 GMT

Is the problem intermittent or constant?

Out of interest which model router do you have?

Re: No longer able to connect to FTP servers using TLS

presnickson — Wed, 27 Sep 2023 13:56:10 GMT

I am having the same issues, the problem is constant, can't connect to any FTP server using TLS.

Did you manage to find a solution?

Re: No longer able to connect to FTP servers using TLS

JonathanB — Thu, 28 Sep 2023 12:28:18 GMT

Hi @bigjim, @presnickson,

Which model of router are you using?

Thanks,
Jonathan

Re: No longer able to connect to FTP servers using TLS

benwalker — Thu, 05 Oct 2023 12:03:22 GMT

@bigjimI'm suffering the same issue. Did you locate a fix?

Re: No longer able to connect to FTP servers using TLS

presnickson — Mon, 09 Oct 2023 17:43:43 GMT

@JonathanB I am using ZTE MC801a

Re: No longer able to connect to FTP servers using TLS

presnickson — Mon, 09 Oct 2023 17:45:11 GMT

@Benphp I've been able to connect using a VPN

Re: No longer able to connect to FTP servers using TLS

Slobcat1337 — Sat, 14 Oct 2023 13:22:31 GMT

Also a web developer and having the same issue, anyone know how to fix this?

Re: No longer able to connect to FTP servers using TLS

tournesolbleu — Mon, 20 Nov 2023 18:48:13 GMT

Hi Did you ever get to the bottom of this, i'm having the same issue and it's driving me crazy! Thanks in advance.

Re: No longer able to connect to FTP servers using TLS

JonathanB — Tue, 21 Nov 2023 13:08:24 GMT

Hi everyone,

I'll be honest I'm not too familiar with FTP, other than a quick online search, but I'm sure if we can eliminate as many factors as possible we can then raise this onto our Service Desk.

Can anyone let me know, and multiple users corroborate if possible:

Is this issue Three Broadband specific, or happening with mobiles on Three too?
Does it make any difference whether the connection is over 3/4/5G?
Is this a constant issue, or intermittent?
Does this happen on both of our APNs 3internet (default for Broadband) and three.co.uk (default for phone SIMs)?
Assuming it's a router/broadband specific issue does switching to an IPv4 only connection help?

Let me know on the above and this should be a good starting point for getting an investigation started.

Thanks,
Jonathan

Re: No longer able to connect to FTP servers using TLS

benwalker — Sat, 02 Dec 2023 19:31:06 GMT

So, the issue went away on it's own not long after my post, and was working perfectly up until the outage problems yesterday. It's now back, and using a VPN is again the only workaround. It's clearly an issue Three is aware of given it being fixed last time...

Re: No longer able to connect to FTP servers using TLS

daveylad — Fri, 09 Feb 2024 17:29:19 GMT

Can you tell me is this issue fixed yet? Just moved to 3 home broadband and now can't publish any apps to my web server.

Re: No longer able to connect to FTP servers using TLS

seredrup — Sat, 06 Apr 2024 18:43:32 GMT

I don't know if this helps, but I too am a developer and recently hit a similar problem using Filezilla.
what I found was that one site I was trying to connect to (which I had previously connected to successfully) I could no longer reach, BUT a different site I was able to reach.
After a bit of checking and searching, I tried again but this time with a VPN running.

This time I could connect ot BOTH sites successfully.
Still not sure what is going on exactly, but I wondered if Three had some filters blocking certain IP addresses?

Anyway, at least I can now use FTP providing I'm running a VPN.

Steve Redrup.
(3 Home Broadband User on 5G).

Re: No longer able to connect to FTP servers using TLS

ConorRhys — Wed, 22 Jan 2025 21:34:56 GMT

Is there a solution to this yet? I am also having this issue.