AVG internet security blocks guest centos' internet

My box is centos 7.1 x64 as guest virtualbox on windows 10 x64 as host.

I could not connect with internet at cenots. At host windows' AVG internet security blocks guest centos' internet.
When I uninstall AVG's firewall, guest centos' internet works well.


1.

[root@localhost ~]# ifconfig
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.4 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::a00:27ff:fe82:c1d8 prefixlen 64 scopeid 0x20<link>
ether 08:00:27:82:c1:d8 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 94 bytes 5814 (5.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 353 bytes 35527 (34.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 353 bytes 35527 (34.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

2.
systemctl stop firewalld
systemctl stop iptables
systemctl stop iptables6


3. Selinux
[root@localhost ~]# sestatus
SELinux status: disabled


Any helpful coments would be appreciated.
Thanks in advance.