修改centos和ubuntu ssh远程连接端口提升系统安全性
#修改centos服务器ssh端口
sed -i 's/#Port 22/Port 38390/' /etc/ssh/sshd_config
sed -i 's/^GSSAPIAuthentication yes$/GSSAPIAuthentication no/' /etc/ssh/sshd_config
service sshd restart
#修改centos服务器root密码
echo '8bdafafffe' | passwd --stdin root
发现sshd无法启动
UseDNS no
#AddressFamily inet
PermitRootLogin yes
SyslogFacility AUTHPRIV
PasswordAuthentication yes
vim /etc/ssh/sshd_config
修改如下:
ListenAddress 1.1.1.1
重启sshd报错:
service sshd restart
Stopping sshd: [FAILED]
Starting sshd: /etc/ssh/sshd_config line 130: address family must be specified before ListenAddress.
[FAILED]
于是将sshd_config底部的AddressFamily inet提至ListenAddress前面即可:
Port 38390
AddressFamily inet
ListenAddress 1.1.1.1
ubuntu ssh端口修改方法
sed -i 's/Port 22/Port 38390/' /etc/ssh/sshd_config
sed -i 's/^GSSAPIAuthentication yes$/GSSAPIAuthentication no/' /etc/ssh/sshd_config
service ssh restart
密码修改方法
sudo passwd