ftp passive mode and php

General Tech Bugs & Fixes 2 years ago

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Posted on 16 Aug 2022, this text provides information on Bugs & Fixes related to General Tech. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

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manpreet Tuteehub forum best answer Best Answer 2 years ago

 

 

I have an Apache web server running on this machine with Debian stable, this PHP program have to connect using FTP to a remote online server among other things.

Everything worked fine until I installed an FTP server (vsftpd version 3.0.3-8+b1), but I don't think this is the culprit.

Now I get this error

The exact error/s are:

I won't open a connection to x.x.x.x --->*remote server ip* (only to x.x.x.x ---->*my public ip*)

And can't even ls remote directories, getting this error instead:

Unable to list directory

I suspect this is because FTP runs in active mode "by default" now, but I am really not sure. Those errors seems something related with passive mode.

What do you think?

The PHP routines we are talking about are: ftp_login() and ftp_fput()

I think it's auto active mode because everytime I use ftp_pasv(, true) it does work fine. Didn't have to specify before.

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