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Old 11-05-2013, 01:22 PM   #1
dilbert_uk
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Registered: Aug 2011
Location: Lima, Peru
Distribution: Debian 10.4, xubuntu 20.04, Ubuntu 20.04 LTS
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ftp authentication fails with one ISP (Virginmedia) and succeeds with two other ISPs


Hi all,

on my lubuntu PC connected with Virginmedia broadband, I am getting:

220 You will be disconnected after 15 minutes of inactivity.
Name (xxxxxxx.com:yyyyyy): yyyyyy
331 User yyyyyy OK. Password required
Password:
530 Login authentication failed
Login failed.


When I connect to two different shell acounts (one in the US, the other in Germany), I am getting on both command lines of them this:

220 You will be disconnected after 15 minutes of inactivity.
Name (xxxxxxx.com:yyyyyy): yyyyyy
331 User yyyyyy OK. Password required
Password:
230 OK. Current restricted directory is /
Remote system type is UNIX.

Does someone has a clue how this can happen with the ftp protocol? How can the ISP have an impact if authentication works or not?
 
Old 11-06-2013, 05:19 AM   #2
normanlinux
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Virgin Media's servers are so slow that it probably times itself out ;-) I am on Virgin Broadband and find *anything* on their site unbearably slow, most other stuff seemms fine
 
Old 11-06-2013, 11:42 AM   #3
dilbert_uk
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Original Poster
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I got a similar issue, not sure if the same, about 2 months ago when the Virginmedia cablemodem needed about 10 minutes to come up. After being replaced, everything worked fine.

The interesting thing is that only that CPanel application didn't work when the cablemodem had problems. Everything else on the Internet was fine including Virginmedia Web mail.

I could understand that it would be an issue that would have Virginmedia with that particular application of CPanel because I always can see the Web page on http://xxxxxxx.com but not the CPanel on https://xxxxxxx.com:2083. Note the difference is the secure protocol and the port number.

But the shocking fact is that even the simple ftp protocol fails on authentication when using Virginmedia as en ISP but works when using ftp from a shell account in a different country.

If no one on the forum has a clue I can try to monitor the ftp protocol with WireShark but If I would see only the password going out and the error message coming back, I would be out of luck as the guy who maintains the site with CPanel won't do any troubleshooting for me as I seem to be the only people reporting this problem.
This server with the CPanel application is in the US and from shell accounts on servers in the US and Germany it is working with me.
 
Old 11-06-2013, 12:27 PM   #4
dilbert_uk
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Registered: Aug 2011
Location: Lima, Peru
Distribution: Debian 10.4, xubuntu 20.04, Ubuntu 20.04 LTS
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Original Poster
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At least the ftp problem is solved now.

When I ran the ftp command with the options debug and verbose on my lubuntu PC, I got a few more output.

One line is saying:

ftp: setsockopt: Bad file descriptor

Seems to be a faulty install of ftp. Rests the CPanel problem but this far more complex.
 
Old 09-19-2015, 12:49 AM   #5
dilbert_uk
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Registered: Aug 2011
Location: Lima, Peru
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Posts: 83

Original Poster
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Quote:
Originally Posted by dilbert_uk View Post
Hi all,

on my lubuntu PC connected with Virginmedia broadband, I am getting:

220 You will be disconnected after 15 minutes of inactivity.
Name (xxxxxxx.com:yyyyyy): yyyyyy
331 User yyyyyy OK. Password required
Password:
530 Login authentication failed
Login failed.


When I connect to two different shell acounts (one in the US, the other in Germany), I am getting on both command lines of them this:

220 You will be disconnected after 15 minutes of inactivity.
Name (xxxxxxx.com:yyyyyy): yyyyyy
331 User yyyyyy OK. Password required
Password:
230 OK. Current restricted directory is /
Remote system type is UNIX.

Does someone has a clue how this can happen with the ftp protocol? How can the ISP have an impact if authentication works or not?
I just saw this old post.

The answer is this:

Virginmedia installed once a new router because the old one didn't work anymore one day. The reason was probably a new configuration of the Virginmedia network.

The new router had different options for the firewall settings. In fact, it had only three options: high, medium, and low.

With the standard setting "high" the VoIP phones didn't work anymore, and with setting "medium" the CPanel software didn't work. So, the firewall setting in the router needed to be "low".

Now, with ISP Claro Peru, CPanel works with the router standard configuration.
 
Old 09-19-2015, 06:06 AM   #6
normanlinux
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Quote:
Originally Posted by dilbert_uk View Post
I just saw this old post.

The answer is this:

Virginmedia installed once a new router . . .
The new router had different options for the firewall settings. In fact, it had only three options: high, medium, and low.
Actually, this is a misunderstanding of the configuration. The basic firewall settings are as described - ideal for naive Windows users. However, there are additional,separate, setting pages for IP Filtering, Port Forwarding, Port Triggering and Port Blocking,
 
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