FTP interview Questions & Answers

Q: Which Users tare not allowed to login via ftp ?
Ans: Users mentioned in the file ‘/etc/vsftpd/ftpusers’ are not allowed to login via ftp.
Q: What is default directory for ftp / Anonymous user ?
Ans : ‘/var/ftp’ is the default directory for ftp or Anonymous user

Q: How to change the default directory for ftp / Anonymous user ?
Ans: Edit the file ‘/etc/vsftpd/vsftpd.conf’ and change the below directive :

anon_root=/<Path-of-New-Directory>
After making above change either restart or reload vsftpd service.

Q: How to disable Anonymous user in vsftpd ?
Ans: Edit the conf file ‘/etc/vsftpd/vsftpd.conf’ and change below directive and restart the ftp service.

anonymous_enable=NO

Q: What is chroot environment in ftp server ?
Ans: chroot environment prevents the user from leaving its home directory means jail like environment where users are limited to their home directory only. It is the addon security of ftp server.

Q: How to enable chroot environment in vsftpd server ?
Ans : To enable chroot environment edit the file ‘/etc/vsftpd/vsftpd.conf’ and enable the below directives :

chroot_list_enable=YES
chroot_list_file=/etc/vsftpd.chroot_list
The chroot_list_file variable specifies the file which contains users that are chroot.

Q: How to enable only limited/allowed users are able to login via ftp ?
Ans: This can be done by editing the file ‘/etc/vsftpd/vsftpd.conf’ and add the below directives :

userlist_enable=YES
userlist_file=/etc/vsftpd.user_list
userlist_deny=NO

Q: How to set ftp banner in linux ?
Ans: Open the file ‘/etc/vsftpd/vsftpd.conf’ and set the below directive :

ftpd_banner= “Enter New Banner Here”

Q: How To limit the data transfer rate, number of clients & connections per IP for local users ?
Ans: Edit the ftp server’s config file(/etc/vsftpd/vsftpd.conf) and set the below directives :

local_max_rate=1000000 # Maximum data transfer rate in bytes per second
max_clients=50 # Maximum number of clients that may be connect