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Cloud-Lover
Asked: 2022-08-16 19:21:10 +0800 CST

When ufw enabled, FTP client stuck on: 150 Opening ASCII mode data connection

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when I try to connect to FTP server as the following commands in debian while ufw is enabled

I got connected successfully

but I can't list the content of directories with the command ls , because it stuck on 150 Opening ASCII mode data connection.

But when I disable the ufw I got it working perfectly.

ftp ServerName.com
Connected to ServerName.com.
220 Microsoft FTP Service
331 Password required
Password:
230 User logged in.
Remote system type is Windows_NT.
ftp> ls
200 EPRT command successful.
150 Opening ASCII mode data connection.

the ufw config as the following

ufw status
Status: active

To                         Action      From
--                         ------      ----
22                         ALLOW       Anywhere
21/tcp                     ALLOW       Anywhere
20/tcp                     ALLOW       Anywhere
22 (v6)                    ALLOW       Anywhere (v6)
21/tcp (v6)                ALLOW       Anywhere (v6)
20/tcp (v6)                ALLOW       Anywhere (v6)

Am I doing any thing wrong !! or what I have to add to the ufw to allow my ftp client to work as expected ?

linux

0 Answers

  1. Best Answer

    As you have open already port 20 you can make ftp to use passive connection by enter command pass after you authenticate.

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