Enable Telnet and FTP in Linux

To Enable Telnet:

[root@sys38 ~]# chkconfig telnet on
[root@sys38 ~]# service xinetd reload

Reloading configuration: [ OK ]

[root@sys38 ~]# vi /etc/securetty

Allowing Root Logins to Telnet and FTP Services

To configure Red Hat Linux for root logins,

Note:
This is VERY BAD security. Make sure that you NEVER configure your production servers for this type of login.

Configure Telnet for root logins :

Simply edit the file /etc/securetty and add the following to the end of the file:

pts/0
pts/1
pts/2
pts/3
pts/4
pts/5
pts/6
pts/7
pts/8
pts/9

This will allow up to 10 telnet sessions to the server as root.

Configure FTP:

# /etc/init.d/vsftpd start
Starting vsftpd for vsftpd: [ OK ]

Configure FTP for root logins:

Edit the files /etc/vsftpd.ftpusers and /etc/vsftpd.user_list and remove the 'root' line from each file.