ÔÚÔ¶³Ìά»¤Linux»òUnixϵͳʱ£¬Ê¹ÓÃ×î¶àµÄ¿ÖžÍÊÇsshÁË£¬µ«ÊÇ×î½ü·¢ÏÖ²¿·ÖµØ·½µÄISPÔËÓªÉ̲»ÖªÊ²Ã´Ô­ÒòÆÁ±ÎµôÁËSSHĬÈÏʹÓõÄ22¶Ë¿Ú£¬µ¼Ö¼¸¸öµØ·½µÄ·þÎñÆ÷ÎÞ·¨µÇ½ÁË£¬ÄÜ·ñÈÃSSH¼àÌýÔÚ¶à¸ö¶Ë¿ÚÄØ£¬·ÀÖ¹ÔÚÒ»¸ö±»ÆÁ±ÎºóÎÞ·¨µÇ½£¬¾­¹ý¼¸´ÎÊÔÑéÖÕÓÚÕÒµ½ÁË·½·¨¡£

     ÔÚĬÈÏÇé¿öÏ£¬SSH·þÎñµÄÅäÖÃÎļþ´æ·ÅÔÚ/etc/sshĿ¼Ï£¬·þÎñÆ÷ÅäÖÃÎļþΪsshd_config¡£ÄÚÈÝÈçÏ£º

#       $OpenBSD: sshd_config,v 1.48 2002/02/19 02:50:59 deraadt Exp $
 
# This is the sshd server system-wide configuration file.  See sshd(8)
# 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.
 
Port 2222
Port 2223
#Protocol 2,1
#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_rsa_key
#HostKey /etc/ssh/ssh_host_dsa_key
 
# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 3600
#ServerKeyBits 768
 
# Logging
#obsoletes QuietMode and FascistLogging
#SyslogFacility AUTH
SyslogFacility AUTHPRIV
#LogLevel INFO
 
# Authentication:
 
#LoginGraceTime 600
#PermitRootLogin yes
#StrictModes yes
 
#RSAAuthentication yes
#PubkeyAuthentication yes
#AuthorizedKeysFile     .ssh/authorized_keys
 
# rhosts authentication should not be used
#RhostsAuthentication no
# Don't read the user's ~/.rhosts and ~/.shosts files
#IgnoreRhosts yes
# 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
 
# To disable tunneled clear text passwords, change to no here!
#PasswordAuthentication yes
#PermitEmptyPasswords no
 
# Change to no to disable s/key passwords
#ChallengeResponseAuthentication yes
 
# Kerberos options
# KerberosAuthentication automatically enabled if keyfile exists
#KerberosAuthentication yes
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
 
# AFSTokenPassing automatically enabled if k_hasafs() is true
#AFSTokenPassing yes
 
# Kerberos TGT Passing only works with the AFS kaserver
#KerberosTgtPassing no
 
# Set this to 'yes' to enable PAM keyboard-interactive authentication
# Warning: enabling this may bypass the setting of 'PasswordAuthentication'
#PAMAuthenticationViaKbdInt yes
 
#X11Forwarding no
X11Forwarding yes
#X11DisplayOffset 10
#X11UseLocalhost yes
#PrintMotd yes
#PrintLastLog yes
#KeepAlive yes
#UseLogin no
 
#MaxStartups 10
# no default banner path
#Banner /some/path
#VerifyReverseMapping no
 
# override default of no subsystems
Subsystem       sftp    /usr/libexec/openssh/sftp-server

Ö»ÐèÒª½«ÅäÖÃÎļþÖеÄPORTµÄ×¢ÊÍÈ¡Ïû£¬Ã¿Ò»Ðбíʾ¼àÌýµÄÒ»¸ö¶Ë¿Ú£¬ÕâÑùSSH·þÎñ¾Í¿ÉÒÔ¼àÌýÔÚÈÎÒâ¶àÖ¸¶¨µÄ¶Ë¿ÚÁË¡£ÎªÁË°²È«£¬»¹¿ÉÒÔ½«ºìÉ«±ê¼Ç³öµÄÔÊÐírootÕʺŵǽ¸ÄΪNO£¬²»¹ýÐÞ¸Ä֮ǰһ¶¨Òª¼ÇµÃÔÙÔö¼ÓÒ»¸öÕʺţ¬·ñÔò×Ô¼º¶¼ÎÞ·¨µÇ½À²¡£¾­¹ý²âÊÔ£¬Ô¶³Ì²Ù×÷ºÍÎļþ´«Ê䶼ûÓÐÓöµ½ÎÊÌ⣬ºÇºÇ¡£