finalshell连接linux虚拟机出现java.net.ConnectException: Connection timed out: connect

昨天能连接的，第二天就连接超时了

[root@localhost ~]# sudo nmcli networking on
[root@localhost ~]# ifconfig
ens33: flags=4163  mtu 1500
        inet 192.168.221.128  netmask 255.255.255.0  broadcast 192.168.221.255
        inet6 fe80::5311:65e3:a295:37f9  prefixlen 64  scopeid 0x20
        ether 00:0c:29:0a:f2:a6  txqueuelen 1000  (Ethernet)
        RX packets 32  bytes 4218 (4.1 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 47  bytes 5698 (5.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@localhost ~]# systemctl start network.service
Failed to start network.service: Unit network.service not found.
[root@localhost ~]# sudo systemctl start NetworkManager  
[root@localhost ~]# sudo systemctl enable NetworkManager

#sudo nmcli networking on
#ifconfig          
# systemctl start network.service
# sudo systemctl start NetworkManager  
# sudo systemctl enable NetworkManager

依次输入以上即可