VM still cannot access internet

[GrapeBaBa]

Hi,
This is my network device:

eth0 Link encap:Ethernet HWaddr 68:F7:28:1C:FF:96 
 UP BROADCAST MULTICAST MTU:1500 Metric:1
 RX packets:0 errors:0 dropped:0 overruns:0 frame:0
 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000 
 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
 Interrupt:20 Memory:f0600000-f0620000 

lo Link encap:Local Loopback 
 inet addr:127.0.0.1 Mask:255.0.0.0
 UP LOOPBACK RUNNING MTU:65536 Metric:1
 RX packets:11843 errors:0 dropped:0 overruns:0 frame:0
 TX packets:11843 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:0 
 RX bytes:2118377 (2.0 MiB) TX bytes:2118377 (2.0 MiB)

vboxnet3 Link encap:Ethernet HWaddr 0A:00:27:00:00:03 
 inet addr:192.168.27.1 Bcast:192.168.27.255 Mask:255.255.255.0
 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
 RX packets:0 errors:0 dropped:0 overruns:0 frame:0
 TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000 
 RX bytes:0 (0.0 b) TX bytes:1768 (1.7 KiB)

vboxnet4 Link encap:Ethernet HWaddr 0A:00:27:00:00:04 
 inet addr:172.24.4.1 Bcast:172.24.4.255 Mask:255.255.255.0
 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
 RX packets:0 errors:0 dropped:0 overruns:0 frame:0
 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000 
 RX bytes:0 (0.0 b) TX bytes:648 (648.0 b)

virbr0 Link encap:Ethernet HWaddr 52:54:00:FD:BE:C9 
 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
 RX packets:0 errors:0 dropped:0 overruns:0 frame:0
 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:0 
 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

virbr1 Link encap:Ethernet HWaddr 52:54:00:20:2A:70 
 inet addr:192.168.123.1 Bcast:192.168.123.255 Mask:255.255.255.0
 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
 RX packets:0 errors:0 dropped:0 overruns:0 frame:0
 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:0 
 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

wlan0 Link encap:Ethernet HWaddr E8:B1:FC:C1:26:4F 
 inet addr:9.112.130.225 Bcast:9.112.131.255 Mask:255.255.254.0
 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
 RX packets:23687 errors:0 dropped:0 overruns:0 frame:0
 TX packets:17949 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000 
 RX bytes:27644690 (26.3 MiB) TX bytes:1993361 (1.9 MiB)

I have execute the command:

sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

sudo iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE

but in iptables:

Chain POSTROUTING (policy ACCEPT)
target prot opt source destination 
MASQUERADE tcp -- 192.168.122.0/24 !192.168.122.0/24 masq ports: 1024-65535 
MASQUERADE udp -- 192.168.122.0/24 !192.168.122.0/24 masq ports: 1024-65535 
MASQUERADE all -- 192.168.122.0/24 !192.168.122.0/24 
MASQUERADE tcp -- 192.168.122.0/24 !192.168.122.0/24 masq ports: 1024-65535 
MASQUERADE udp -- 192.168.122.0/24 !192.168.122.0/24 masq ports: 1024-65535 
MASQUERADE all -- 192.168.122.0/24 !192.168.122.0/24 
MASQUERADE tcp -- 192.168.123.0/24 !192.168.123.0/24 masq ports: 1024-65535 
MASQUERADE udp -- 192.168.123.0/24 !192.168.123.0/24 masq ports: 1024-65535 
MASQUERADE all -- 192.168.123.0/24 !192.168.123.0/24 
MASQUERADE all -- 0.0.0.0/0 0.0.0.0/0 
MASQUERADE all -- 0.0.0.0/0 0.0.0.0/0 
MASQUERADE all -- 0.0.0.0/0 0.0.0.0/0 

i am not quite similar network config, could you give me some advice?