Unwanted open ports

I have several open ports on OpenMediavault, that I don't want to be open, like the FTP port (21).

That's insecure and specially weird, since, for example, I have FTP disabled on OMV GUI. After searching the forum, I have even tried to enable FTP and then disable it, but this trick does not work: the port continues open, no matter what.

Is this happening only to me? Is there any fix for this?

Thanks.

Quote from ryecoaaron

Two things... It doesn't have any config, so it shouldn't cause any harm. And you should have your omv system behind a firewall/router meaning the port doesn't matter unless you open that port on the firewall/router.

But I maybe the following would fix it.

sudo systemctl disable proftpd
sudo systemctl stop proftpd

Hey man, thanks for the reply! My ISP gives me an ipv6 address with two options: firewall enabled or disabled. That's it, the ONT has no firewall customization at all for ipv6 (on ipv4, I could manage port forwarding, but it's not the case with ipv6). That's why I'm a little concerned about these open ports.

I appreciate the suggestion about how to close the port 21, it worked! Could you also give me a hint about how to close the remaining ports? - 111, 139, 445 and 2049.

Quote from ryecoaaron

111 is nfs
139 is samba/cifs
445 is samba/cifs
2049 is nfs

So, you need to disable nfs and samba or add entries to the firewall tab in OMV.

Thanks man!