How can I restrict FTP and SMB access to computers on the internal network

Question

I have Installed samba and tried adding this line config file for samba

Listen=yes

Listen_address= 127.0.0.1 I have also put this in vsftpd.cnf It doesn't work

Answer 1

The IP addresses 127.x.x.x are always restricted to the local host only, so when other computers try that they connect only to themselves. Assuming you have Linux on a Raspberry Pi, see what other IP addresses it has that connect with the outside world like this:

/sbin/ifconfig

and then use one of those addresses instead. Also try to ping the address from your other computers - if that doesn't work then ftp has little chance of working either.

The vsftpd.conf documentation suggests that the default is to listen on all local addresses. You could try that by commenting out the listen_address line with a # at the start of the line, and then restart the vsftpd server process.

Do not confuse samba and vsftp. They are two separate server processes that use different protocols, port numbers and configuration files.

Beware of case sensitive options, the wrong case will not work. You wrote Listen but probably meant listen ;-)