#!/bin/bash
echo root:RUYO |sudo chpasswd root
sudo sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin yes/g' /etc/ssh/sshd_config;
sudo sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication yes/g' /etc/ssh/sshd_config;
sudo service sshd restart
有大佬说是失效,于今日2021年2月8号再次测试,目前还是可用!
Centos7系统安装BBR先执行下列操作:
grub2-mkconfig -o /boot/grub2/grub.cfg
grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg
开启系统的BBR请用下面指令:
echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
sysctl -p
sysctl -n net.ipv4.tcp_congestion_control
已开机修改SSH登录:
执行如下命令(sudo-i为切换到root账户,passwd为修改root账户密码)
sudo -i
passwd
按提示刷入密码,重复输入密码。接着输入
sudo sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin yes/g' /etc/ssh/sshd_config;
sudo sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication yes/g' /etc/ssh/sshd_config;
sudo service sshd restart