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使用SSH登录远程服务器 在远程服务器上配置密钥文件可登录时，可能因本地和服务器SSH版本不同导致密钥和算法不兼容。解决方法是使用SSH命令时添加`-o`参数指定算法，如`ssh -o PubkeyAcceptedKeyTypes=+ssh-rsa -o HostkeyAlgorithms=+ssh-rsa -i '/Users/mymac/.ssh/id_rsa' zndev@123.57.20.71`。确保本地SSH客户端和服务器SSH服务最新版本，检查密钥文件权限及服务器SSH配置，尝试重新生成密钥对并正确添加公钥到`authorized_keys`文件。在Windows系统可尝试使用其他SSH客户端。
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宿主机无法访问虚拟机docker端口映射 Creating a Docker container with port mapping to the host machine, but unable to access the host machine port from outside? This is likely due to the host machine not having IP forwarding enabled, preventing the external network from forwarding to the Docker container's corresponding port. To resolve this, you can enable IP forwarding in Linux by modifying the net.ipv4.ip_forward kernel parameter. You can check whether IP forwarding is enabled by checking the value of /proc/sys/net/ipv4/ip_forward. To temporarily enable IP forwarding, you can use the command "echo 1 > /proc/sys/net/ipv4/ip_forward" or "sysctl -w net.ipv4.ip_forward=1". For permanent IP forwarding, you can modify the /etc/sysctl.conf file and set "net.ipv4.ip_forward = 1", then apply the changes with "sysctl -p /etc/sysctl.conf". Additionally, you can restart the network service or network interface to immediately apply the changes.
