openldap+ssh 登录 ubuntu 9.04

查看远程用户ssh登录信息：
grep sshd /var/log/auth.log
pam的描述：
[url]http://www.ubuntuchina.com/viewthread.php?tid=5630[/url]
准备工作：
1.安装openldap

sudo apt-get install slapd ldap-utils

2.安装openssh

sudo apt-get install openssh-server

需要配置的文件：
/etc/nsswitch.conf 和/etc/pam.d
这是我的配置：/etc/nssitch

# /etc/nsswitch.conf                                                                                                        
#                                                                                                                           
# Example configuration of GNU Name Service Switch functionality.                                                           
# If you have the `glibc-doc-reference' and `info' packages installed, try:                                                 
# `info libc "Name Service Switch"' for information about this file.                                                        

# pre_auth-client-config # passwd:         compat                                                                           
passwd: files ldap
# pre_auth-client-config # group:          compat                                                                           
group: files ldap
# pre_auth-client-config # shadow:         compat                                                                           
shadow: files ldap

hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

# pre_auth-client-config # netgroup:       nis                                                                              
netgroup: nis

参考：[url]http://ubuntuforums.org/showthread.php?t=1074403[/url]
[url]http://ubuntuforums.org/showthread.php?t=157289[/url]
配置：/etc/pam.d
1./etc/pam.d/common-account

account sufficient      pam_ldap.so
account required        pam_unix.so

2./etc/pam.d/common-auth

auth    sufficient      pam_ldap.so
auth    required        pam_unix.so nullok_secure use_first_pass

3./etc/pam.d/common-password

password        sufficient      pam_ldap.so
password        required        pam_unix.so nullok obscure min=4 max=8 md5

4./etc/pam.d/common-session

session    required     pam_unix.so
session    required     pam_mkhomedir.so skel=/etc/skel/
session    optional     pam_ldap.so
session    optional     pam_foreground.so

现在的进行一下其他设置：假设A已经设置好了ldap＋ssh访问，现在设想机器B使用A的LDAP数据库来进行用户认证。
A的设置如下：
/etc/default/slapd

SLAPD_SERVICES="ldap://192.168.236.179:389/ ldaps:/// ldapi:///"

这样可以允许从外部访问。(机器B)

B的设置如下：
这在之前也需要文章上部分设置pam等。
/etc/ldap.conf

# network or connect timeouts (see bind_timelimit).                                                                         
host 192.168.236.179

# The distinguished name of the search base.                                                                                
base dc=liyh,dc=local

# Another way to specify your LDAP server is to provide an                                                                  
uri ldap://192.168.236.179/