Ubuntu – vsftpd: 500 OOPS: could not bind listening IPv4 socket

ftpsslUbuntuvsftpd

I will use vsftpd as a ftp server. I did all changes on /etc/vsftpd.conf.

These changes are (according to digitalocean):

anonymous_enable=NO
write_enable=YES
local_enable=YES
chroot_local_user=YES

More here: https://www.digitalocean.com/community/articles/how-to-configure-vsftpd-to-use-ssl-tls-on-an-ubuntu-vps

I'v also created a ssl certificate file. (not necessary but recommended)

Still getting :

500 OOPS: could not bind listening IPv4 socket

Note:

pam_service_name=vsftpd

Netstat:

netstat -pan|grep :21;
tcp        0      0 0.0.0.0:21 0.0.0.0:*               LISTEN      30694/vsftpd

Best Answer

Much probably you have /etc/xinetd.d/ftp enabled AND pointing to /usr/sbin/vsftpd and in /etc/vsftpd.conf you have listen=YES.

Simply change it to listen=NO. The listen=YES is for standalone, if you want vsftpd to be always active then you'll have to disabled it in the xinetd config.

Related Solutions

Ubuntu – vsftpd: 500 OOPS: prctl PR_SET_SECCOMP failed

The message indicates that the prctl(PR_SET_SECCOMP, ...) call failed.

ret = prctl(PR_SET_SECCOMP, 2, &prog, 0, 0);
if (ret != 0)
{
  die("prctl PR_SET_SECCOMP failed");
}

It can happen when your kernel does not have the CONFIG_SECCOMP_FILTER enabled. But that can hardly change while you "work on website".

Quote from prctl man page:

PR_SET_SECCOMP (since Linux 2.6.23)

Set the secure computing (seccomp) mode for the calling thread, to limit the available system calls. The seccomp mode is selected via arg2. (The seccomp constants are defined in <linux/seccomp.h>

...

With arg2 set to SECCOMP_MODE_FILTER (since Linux 3.5) the system calls allowed are defined by a pointer to a Berkeley Packet Filter passed in arg3. This argument is a pointer to struct sock_fprog; it can be designed to filter arbitrary system calls and system call arguments. This mode is available only if the kernel is configured with CONFIG_SECCOMP_FILTER enabled.

As a poor workaround, you can configure vsftpd not to enable the the seccomp mode.

Use the seccomp_sandbox=no option in the vsftpd.conf.

The option does not seem to be documented.

Fix vsftpd File Transfer Issues with TLS on Ubuntu

and this port is redirected by the router to the IP of the server and the port 21

But you need to redirect also the ports 50000–60000 for the data connections to allow the transfer.

It may work without TLS, even without the redirect, if the router is smart and automatically opens the ports as needed, by inspecting the FTP control connection. But this cannot work with TLS, as the control connection is encrypted and the router cannot inspect it.

Best Answer

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Ubuntu – vsftpd: 500 OOPS: prctl PR_SET_SECCOMP failed

Fix vsftpd File Transfer Issues with TLS on Ubuntu

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