Enable telnetd service

• Install package

for Ubuntu or debain
# sudo apt-get install xinetd telnetd
or
for Angstrom Distribution
# opkg install netkit-telnet xinetd

• Edit /etc/xinetd.conf

# vi /etc/xinetd.conf

defaults
{
        instances = 60
        log_type = SYSLOG authpriv
        log_on_success = HOST PID
        log_on_failure = HOST
        cps = 25 30
}
includedir /etc/xinetd.d

• Edit /etc/xinetd.d/telnet

# vi /etc/xinetd.d/telnet

service telnet
{
        disable = no
        flags = REUSE
        socket_type = stream
        wait = no
        user = root
        # server = /usr/sbin/in.telnetd
        server = /usr/sbin/telnetd
        log_on_failure += USERID
}

• Execute xinitd service

# /etc/init.d/xinetd restart