Ubuntu Network Settings with secure password-free connection

1. Securefx cannot connect to virtual Ubuntu
Ubuntu has installed Openssh-server,
Auto ENP0S3
Iface enp0s3 inet Static
Address 192.168.1.20
Netmask 255.255.255.0
Gateway 192.168.1.11
Dns-nameserver 233.5.5.5
Change to address 192.168.1.20 #与宿主机器在同一局域网段
Then restart the network
sudo/etc/init.d/networking restart

2. Ping www.baidu.com
Resolve into www.a.shifeng.com is possible, stating that Dus parsing is not a problem
But still host unreachable, the gateway is set up with problems ,
Using the command sudo vi/etc/network/interfaces
Set the gateway to
Auto ENP0S3
Iface enp0s3 inet Static
Address 192.168.1.20
Netmask 255.255.255.0
Gateway 192.168.1.1 #设置成了 (homestay) Host IP
Dns-nameserver 233.5.5.5
Then restart the network
sudo/etc/init.d/networking restart

3, SSH without password login still have problems
For example, uncheck out "password"

4, Securefx appear in Chinese garbled, instead of UTF-8 code, such as

Ubuntu Network Settings with secure password-free connection