ssh 相关的一点小技巧

Posted 11 months, 1 week ago at 11:32 am. 0 comments

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vi /etc/ssh/sshd_config 如下:
Port 44444
Protocol 2
PermitRootLogin without-password #root用户必须有key才能登陆
UseDNS no
PasswordAuthentication no # 强制只有key才能登陆

# 以上仅针对登陆机

# 如何来建立自己名字的key呢?
ssh-keygen -C bixuan -t dsa

如果是从secureCRT生成的,那必须转换一下:
ssh-keygen -i -f Identity.pub >> authorized_keys

如个openssh的版本低于2.9
那么请用:
ssh-keygen -X -f Identity.pub >> authorized_keys

即可

附注:(建议ListenAddress 0.0.0.0改成只监听内网ip,省得开销iptables。laurence注)

# cat /etc/ssh/sshd_config
UseDNS no
Port 44444
Protocol 2
PermitRootLogin without-password
#PermitRootLogin yes|No
PasswordAuthentication no
Subsystem sftp /usr/libexec/openssh/sftp-server

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