下载openssh 3.5p1 http://www.openssh.org/

在x86环境下

./configure --sysconfdir=/etc/ssh     ssh密钥目录

编辑Makefile

在ssh和sshd的编译选项上加-static参数，静态编译，动态编译出来总是找glic 2.2.4库。

strip ssh sshd

/etc/ssh下放上sshd_config和密钥文件

touch /var/log/lastlog

运行sshd

sshd -d -4

-d   debug模式

-4   只支持ipv4

sshd_config

# $OpenBSD: sshd_config,v 1.34 2001/02/24 10:37:26 deraadt Exp $

# This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin

# This is the sshd server system-wide configuration file.  See sshd(8)
# for more information.

Port 22
Protocol 2,1
ListenAddress 0.0.0.0
#ListenAddress ::
HostKey /etc/ssh/ssh_host_key
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
ServerKeyBits 768
LoginGraceTime 600
KeyRegenerationInterval 3600
PermitRootLogin yes
#
# Don''''t read ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# Uncomment if you don''''t trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes
StrictModes yes
X11Forwarding yes
X11DisplayOffset 10
PrintMotd yes
KeepAlive yes

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

RhostsAuthentication no
#
# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
RhostsRSAAuthentication no
#
RSAAuthentication yes

# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication yes
PermitEmptyPasswords yes

# Comment to enable s/key passwords or PAM interactive authentication
# NB. Neither of these are compiled in by default. Please read the
# notes in the sshd(8) manpage before enabling this on a PAM system.
#ChallengeResponseAuthentication no

# To change Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#AFSTokenPassing no
#KerberosTicketCleanup no

# Kerberos TGT Passing does only work with the AFS kaserver
#KerberosTgtPassing yes

#CheckMail yes
#UseLogin no

#MaxStartups 10:30:60
#Banner /etc/issue.net
#ReverseMappingCheck yes

#Subsystem sftp /usr/libexec/openssh/sftp-server