Telnet login RHEL no password

No passord for telnet User with the following procedure : a) created a user "manolo" #useradd manolo b) added a password # passwd manolo c) opened /etc/shadow and deleted the password manually for the user. # vi /etc/shadow output manolo:$1$kAOxC9VT$rgJjMuzFz229KTjsKEBxP/:14354:0::7::: d) deleted the password manually: manolo::14354:0::7::: e) then telnet using manolo to my host. # telnet -l manolo 10.33.8.105 Managed to log in with out prompting for a password . Please be Advised that I recommend ssh with shared keys or telnet through an ssh tunnel