ubuntu實現telnet的方法：

1.在終端輸入：“sudo apt-get install xinetd telnetd”

2.安裝成功后，系統也會有相應提示，并輸入以下命令：

sudo vi /etc/inetd.conf并加入以下一行
telnet stream tcp nowait telnetd /usr/sbin/tcpd /usr/sbin/in.telnetd

3. 輸入“sudo vi /etc/xinetd.conf”并添加以下內容：

# Simple configuration file for xinetd
#
# Some defaults, and include /etc/xinetd.d/
defaults
{
# Please note that you need a log_type line to be able to use log_on_success
# and log_on_failure. The default is the following :
# log_type = SYSLOG daemon info
instances = 60
log_type = SYSLOG authpriv
log_on_success = HOST PID
log_on_failure = HOST
cps = 25 30
}
includedir /etc/xinetd.d

4. 再輸入：“sudo vi /etc/xinetd.d/telnet”并添加以下內容：

# default: on
# description: The telnet server serves telnet sessions; it uses
# unencrypted username/password pairs for authentication.
service telnet
{
disable = no
flags = REUSE
socket_type = stream
wait = no
user = root
server = /usr/sbin/in.telnetd
log_on_failure += USERID
}

5. 重啟機器或重啟網絡服務:

sudo /etc/init.d/xinetd restart

6. 使用TELNET客戶端遠程登錄：

　　ifconfig -a　　//顯示本機地址