FreeBSD下面配置SSH服务，共要修改三个文件，这三个文件目录分别为：
1、inetd.conf  /etc/inetd.conf
2、rc.conf  /etc/rc.conf
3、sshd_config  /etc/ssh/sshd_config

修改文件配置：

1、修改vi  /etc/inetd.conf文件
#ssh     stream  tcp     nowait  root    /usr/sbin/sshd          sshd -i -4
#ssh    stream  tcp6    nowait  root    /usr/sbin/sshd          sshd -i -6
把第一条前面的#删除掉，你若想同时使用IP v6，把第二条前面的#也删除掉，保存退出。

使用命令查看修改后的效果：
freebsd# cat /etc/inetd.conf | grep ssh
ssh     stream  tcp     nowait  root    /usr/sbin/sshd          sshd -i -4
#ssh    stream  tcp6    nowait  root    /usr/sbin/sshd          sshd -i -6
freebsd#

2、修改vi /etc/rc.conf文件，在文件最后，添加上：

sshd_enable=”YES”

保存退出。

3、修改vi /etc/ssh/sshd_config文件的如下内容

第19行 Port 22   #注：看网上的教程没有开启19、20行，但我开启了。
第20行 Protocol 2

第42行 PermitRootLogin yes   #注：不建议开启此项，远程使用root直接登录，有一定的危险性。
第43行 StrictModes yes

第46行 RSAAuthentication yes

第56行 IgnoreUserKnownHosts no

第58行 IgnoreRhosts yes

第61行 PasswordAuthentication yes
第62行 PermitEmptyPasswords no

第92行 PrintMotd yes

其它内容根据自己的需要打开或关闭，保存退出。

下面是我本机修改过的内容

=========================================================================

#       $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 $

# 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

# 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
# default value.

# Note that some of FreeBSD’s defaults differ from OpenBSD’s, and
# FreeBSD has a few additional options.

#VersionAddendum FreeBSD-20050903

Port 22
#Protocol 2
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::

# HostKey for protocol version 1
#HostKey /etc/ssh/ssh_host_key
# HostKeys for protocol version 2
#HostKey /etc/ssh/ssh_host_dsa_key

# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 1h
#ServerKeyBits 768

# Logging
# obsoletes QuietMode and FascistLogging
#SyslogFacility AUTH
#LogLevel INFO

# Authentication:

#LoginGraceTime 2m
PermitRootLogin yes
StrictModes yes
#MaxAuthTries 6

RSAAuthentication yes
#PubkeyAuthentication yes
#AuthorizedKeysFile     .ssh/authorized_keys

# For this to work you will also need host keys in /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
# RhostsRSAAuthentication and HostbasedAuthentication
IgnoreUserKnownHosts no
# Don’t read the user’s ~/.rhosts and ~/.shosts files
IgnoreRhosts yes

# Change to yes to enable built-in password authentication.
PasswordAuthentication yes
PermitEmptyPasswords no

# Change to no to disable PAM authentication
#ChallengeResponseAuthentication yes

# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
#KerberosGetAFSToken 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
# be allowed through the ChallengeResponseAuthentication mechanism.
# Depending on your PAM configuration, this may bypass the setting of
# PasswordAuthentication, PermitEmptyPasswords, and
# “PermitRootLogin without-password”. If you just want the PAM account and
# session checks to run without PAM authentication, then enable this but set
# ChallengeResponseAuthentication=no
#UsePAM yes

#AllowTcpForwarding yes
#GatewayPorts no
#X11Forwarding yes
#X11DisplayOffset 10
#X11UseLocalhost yes
PrintMotd yes
#PrintLastLog yes
#TCPKeepAlive yes
#UseLogin no
#UsePrivilegeSeparation yes
#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
#UseDNS yes
#PidFile /var/run/sshd.pid
#MaxStartups 10

# no default banner path
#Banner /some/path

# override default of no subsystems
Subsystem       sftp    /usr/libexec/sftp-server

=========================================================================

3、启动服务查看SSH 22端口是否在监听状态下
启动SSH服务
freebsd#/etc/rc.d/sshd start

重新启动SSH服务

freebsd#/etc/rc.d/sshd restart

查看SSH服务端口是否开启

freebsd# netstat -na | grep 22
tcp4       0     52 192.168.1.250.22       192.168.1.88.18134     ESTABLISHED
tcp4       0      0 *.22                   *.*                    LISTEN
tcp6       0      0 *.22                   *.*                    LISTEN

freebsd#

配置完成。接下来你就可以不用再坐在freebsd主机面前了，使用SSH工具就能远程连接freebsd主机了。

如果你在配置中遇到问题请留言。