在看linux网络编程,看到超级服务器部分Inetd,结果想跑个程序试试,发现telnet localhost居然不行,然后果断上网找资料,试了多处方法,才终于行的通。如下:
1、$sudo apt-get install xinetd telnetd
2、$sudo vim /etc/inetd.conf并加入以下一行:
telnet stream tcp nowait telnetd /usr/sbin/tcpd /usr/sbin/in.telnetd
3、$sudo vim /etc/xinetd.conf并加入以下内容:
# Simple configuration file for xinetd
# Some defaults, and include /etc/xinetd.d/
defaults
{
# Please note that you need a log_type line to be able to use log_on_success
# and log_on_failure. The default is the following :
# log_type = SYSLOG daemon info
instances = 60
log_type = SYSLOG authpriv
log_on_success = HOST PID
log_on_failure = HOST
cps = 25 30
}
includedir /etc/xinetd.d
4、$sudo vim /etc/xinetd.d/telnet并加入以下内容:
# 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、重启机器或重启网络服务$sudo /etc/init.d/xinetd restart
6、测试配置是否成功(能通过telent服务器登陆到Ubuntu则成功)
正常来说,可能到这就行了,可是我的却还是不行,显示Unable to connect。。。于是乎,继续~~
首先安装openbsd-inetd: sudo apt-get install openbsd-inetd
然后检查文件/etc/inetd.conf,确保有这一行
telnet stream tcp nowait root /usr/sbin/tcpd /usr/sbin/in.telnetd
然后启动:sudo /etc/init.d/openbsd-inetd restart
OK,现在可以了~