I have an urgent requirement to setup a ftp server on one the Ubuntu desktop for a interim solution. I have installed vsftpd easily using apt command and started it.
root@web-119:/etc/apt# apt-get install vsftpd root@web-119:/etc/apt# netstat -anlp | grep "21" tcp 0 0 0.0.0.0:21 [...]
Few of my servers are protected using TCP Wrappers to control the access for security reasons. I have limited the ssh access using this mechanism to certain known IP’s or network ranges. But recently one the user who using 3G connection from a mobile network unable to access my servers as they are using IPv6 [...]
As we all know, most system users can have sftp access to Linux box by default along with ssh access. So that we can transfer the files securely over it.
But the real headache of this system is, all the users can access any of system files and also has shell access to the server [...]