1、确定你的telnet服务打开没有： [root@111 ~]# chkconfig --list|grep telnet ekrb5-telnet: off krb5-telnet: off [root@111 ~]# 注意检查结果这里是关闭状态 2、打开telnet服务： [root@111 ~]# chkconfig krb5-telnet on [root@111 ~]# chkconfig --list|grep telnet ekrb5-telnet: offv krb5-telnet: on [root@111 ~]# 检查已经被打开了 3、修改登陆文件securetty,主要增加要登陆的终端点 [root@111 ~]# vi /etc/securetty 增加如下几行： pts/1 pts/2 pts/3 pts/4 pts/5 …… 保存退出即可。 如果是chkconfig krb5-telnet on 会提示Unencrypted connection refused. Goodbye.Connection closed by foreign host.看错误信息好像是说的为加密的连接被拒绝，查看了他的配置文件也没发现有什么关于加密的选项，而且配置文件也很正确，于是到google上去搜索了一大圈，最后终于找到一个老外写的一个解决方法： I really needed a bit of guidance and you provided it./sbin/chkconfig --list
|grep telnetThe above command told me I had both krb5-telnet and ekrb5-telnet,
andalso the installed telnet all on. Initially I did not know what theywere
all for. After turning them on and off and testing my telnetconnection from
another box I realised that "ekrb5-telnet" was theencrypted telnet server that
I needed to turn off to run "krb-telnet"which allowed non-encrypted telnet
connections.eg /sbin/chkconfig ekrb5-telnet offThanks for your help. |
原来ekrb5-telnet是一个需要加密的telnet服务，把这个服务启动上当然就需要加密了。解决方法：将/etc/xinetd.d/ekrb5-telnet里面的disable改成=yes，再重启xinetd服务service xinetd restart就OK了！
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