freebsd ssh配置

#ClientAliveCountMax 3
#UseDNS no
#PidFile /var/run/sshd.pid
#MaxStartups 10
# no default banner path
#Banner /some/path
# override default of no subsystems
# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented. Uncommented options change a
Subsystem sftp /usr/libexec/sftp-server
IgnoreRhosts yes
IgnoreUserKnownHosts yes
PrintMotd yes
StrictModes no
RSAAuthentication yes
PermitRootLogin yes #允许root登录
3.改成/etc/ssh/ssh_config中指定的公钥文件名，在FreeBSD中执行：
mv /home/xxx/.ssh/id_dsa.pub /home/xxx/.ssh/authorized_keys
方法2（由SecureCRT生成密钥对）：
1. 设置好用户名后，在SecureCRT设置登录方式中选择PublicKey的Properites -> Use session public key setting -> Use identify file ->Create Identify File ->DSA->生成 Identity 与Identity.pub
#Port 22
#Protocol 2
#AddressFamily any
#ListenAddress 10.1.10.196
#ListenAddress ::
# HostKey for protocol version 1
#HostKey /etc/ssh/ssh_host_key
# This is the sshd server system-wide configuration file. See
# sshd_config(5) for more information.
# This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin
# be allowed through the ChallengeResponseAuthentication mechanism.
# Depending on your PAM configuration, this may bypass the setting of
# PasswordAuthentication, PermitEmptyPasswords, and
/etc/ssh/ssh_known_hosts
#RhostsRSAAuthentication no
# similar for protocol version 2
#HostbasedAuthentication no
# Change to yes if you don't trust ~/.ssh/known_hosts for
# $OpenBSD: sshd_config,v 1.72 2005/07/25 11:59:40 markus Exp $
# $FreeBSD: src/crypto/openssh/sshd_config,v 1.42.2.1 2005/09/11
16:50:35 des Exp $
# "PermitRootLogin without-password". If you just want the PAM account
and
# session checks to run without PAM authentication, then enable this
but set
#StrictModes yes
#MaxAuthTries 6
#RSAAuthentication yes
#PubkeyAuthentication yes
#AuthorizedKey .ssh/authorized_keys
# For this to work you will also need host keys in
# RhostsRSAAuthentication and HostbasedAuthentication
#IgnoreUserKnownHosts no
# Don't read the user's ~/.rhosts and ~/.shosts files
#IgnoreRhosts yes
/etc/rc.d/sshd restart
二、首先vi编辑/etc/inetd.conf,去掉ssh前的#，保存退出
编辑/etc/rc.conf
最后加入:sshd_enable="yes"即可
激活sshd服务：
techo#/etc/rc.d/sshd start
用下面命令检查服务是否启动，在22端口应该有监听。
# Change to yes to enable built-in password authentication.
PasswordAuthentication yes
#PermitEmptyPasswords no
# Change to no to disable PAM authentication
# default value.
# Note that some of FreeBSD's defaults differ from OpenBSD's, and
# FreeBSD has a few additional options.
#VersionAddendum FreeBSD-20050903
#ServerKeyBits 768
# Logging
# obsoletes QuietMode and FascistLogging
#SyslogFacility AUTH
#LogLevel INFO
# Authentication:
#LoginGraceTime 2m
#PermitRootLogin no
#PrintMotd yes
#PrintLastLog yes
#TCPKeepAlive yes
#UseLogin no
#UsePrivilegeSeparation yes
#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
# HostKeys for protocol version 2
#HostKey /etc/ssh/ssh_host_dsa_key
# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 1h
PermitEmptyPasswords no #不允许空密码登录
PasswordAuthentication yes # 设置是否使用口令验证。
##############################################
记得修改完配置文件后，重新启动sshd服务器(/etc/rc.d/sshd restart)即可
#netstat -an ## check port number 22
最后
vi /etc/ssh/sshd_config,
下面是详细配置文件：(/etc/ssh/sshd_config)
####################################################
2.把Identity.pub上传到FreeBSD的/home/xxx/.ssh
3.在FreeBSD中执行：
ssh-keygen -X -f Identity.pub > authorized_keys
取消sshd密码认证方式：
vi /etc/ssh/sshd_config
PasswordAuthentication no
# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes
# Set this to 'no' to disable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
#ChallengeResponseAuthentication yes
# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes