I am having a problem with the FTPS connection. Details are as follows:
server OS:Windows Server 2012 R2
server :Filezilla 0.9.43 beta
client OS:Windows 7
I use apache commons net 3.7.2 as base lib,and extend FTPSclient,my code as follow:
and i get client error
filezilla server's error log:
error id is 004056
This error occur randomly, and may occur after a few connections or dozens of connections.
problem with the FTPS connection, Error code 421
Moderator: Project members
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- Last name: YuanChen
Re: problem with the FTPS connection, Error code 421
You are using an unsupported version of FileZilla Server. Please update to 0.9.60.2 as it's the only one supported.
No support requests over PM! You will NOT get any reply!!!
FTP connection problems? Please read Network Configuration.
FileZilla connection test: https://filezilla-project.org/conntest.php
FileZilla Pro support: https://customerforum.fileZilla-project.org
FTP connection problems? Please read Network Configuration.
FileZilla connection test: https://filezilla-project.org/conntest.php
FileZilla Pro support: https://customerforum.fileZilla-project.org
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- 500 Command not understood
- Posts: 3
- Joined: 2021-01-26 11:08
- First name: Jiang
- Last name: YuanChen
Re: problem with the FTPS connection, Error code 421
thanks for u reply,but I can't upgrade the version of filezilla in production environment.
Re: problem with the FTPS connection, Error code 421
Rant: I'm seriously considering to add a killswitch to all my products so that they _HAVE_ to be updated regularly...
Re: problem with the FTPS connection, Error code 421
Your "production environment" is in grave danger. That ancient version contains multiple severe security vulnerabilities actively being exploited in the wild. Additionally, no one here really knows anymore how that version worked and behaved, as we moved on.ad20201216 wrote: ↑2021-01-28 01:54thanks for u reply,but I can't upgrade the version of filezilla in production environment.
For your own good, you really need to come up with a concept for doing proper server maintenance. Most simply, run a backup server to keep production up while upgrading. Or, prepare a fully updated FTP server with identical configuration, test it on a spare machine, then, do an in-place switch. Easy to do with FileZilla Server and keeps downtime short.
Good idea. You can't keep users from running old versions, as it's Open Source Software, after all. But those forks will not get any support here, as the GPL license states.botg wrote:Rant: I'm seriously considering to add a killswitch to all my products so that they _HAVE_ to be updated regularly...
No support requests over PM! You will NOT get any reply!!!
FTP connection problems? Please read Network Configuration.
FileZilla connection test: https://filezilla-project.org/conntest.php
FileZilla Pro support: https://customerforum.fileZilla-project.org
FTP connection problems? Please read Network Configuration.
FileZilla connection test: https://filezilla-project.org/conntest.php
FileZilla Pro support: https://customerforum.fileZilla-project.org
-
- 500 Command not understood
- Posts: 3
- Joined: 2021-01-26 11:08
- First name: Jiang
- Last name: YuanChen
Re: problem with the FTPS connection, Error code 421
3q for ur advice! I'll try it.