http://linux.ccidnet.com/art/9513/20070706/1136933_1.html
Root@2[/]# apt-get install xinetd
root@2[/]# apt-get install telnetd
root@2[/]# apt-get install telnet
新建一个文件/etc/xinetd.d/telnet,内容如下,并保存
root@2[/]# nano -w /etc/xinetd.d/telnet # 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 server_args = -h log_on_failure += USERID }
从上面我们可以看到我们已经连接成功了,但是使用root连接的时候会失败,因为默认的安全设置是限制root用户使用telnet连接主机的
本来因为telnet是明文传输的,所以处于安全考虑才限制了root从telnet登陆,如果你需要使用,那么如下修改
root@2[/]# nano /etc/pam.d/login
#
# The PAM configuration file for the Shadow `login' service
#
# NOTE: If you use a session module (such as kerberos or NIS+)
# that retains persistent credentials (like key caches, etc), you
# need to enable the `CLOSE_SESSIONS' option in /etc/login.defs
# in order for login to stay around until after logout to call
# pam_close_session() and cleanup.
#
# Outputs an issue file prior to each login prompt (Replaces the
# ISSUE_FILE option from login.defs). Uncomment for use
# auth required pam_issue.so issue=/etc/issue
# Disallows root logins except on tty's listed in /etc/securetty
# (Replaces the `CONSOLE' setting from login.defs)
#把下面在行注释掉
# auth requisite pam_securetty.so
# Disallows other than root logins when /etc/nologin exists
# (Replaces the `NOLOGINS_FILE' option from login.defs)
auth requisite pam_nologin.so
# This module parses /etc/environment (the standard for setting
# environ vars) and also allows you to use an extended config
# file /etc/security/pam_env.conf.
# (Replaces the `ENVIRON_FILE' setting from login.defs)
auth required pam_env.so
# Standard Un*x authentication. The "nullok" line allows passwordless
# accounts.
@include common-auth
# This allows certain extra groups to be granted to a user
# based on things like time of day, tty, service, and user.
# Please uncomment and edit /etc/security/group.conf if you
# wish to use this.
# (Replaces the `CONSOLE_GROUPS' option in login.defs)
# auth optional pam_group.so
# Uncomment and edit /etc/security/time.conf if you n
好,现在一个telnet我们就在debian下面架设好了,当然最后一步本人不建议你做
因为telnet是内镶在xinetd这个服务里面的,所以如果你要启动或者是要停止该服务就要
root@2[/]# /etc/init.d/xinetd
force-reload reload restart start stop