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Can't access the internet in CentOS guest NAT

Posted: 13. Jul 2013, 17:07
by Quan Tran
Hi everyone,

Yesterday i set up a VM running CentOS 6.4 on Kali host. I use network settings:
- Adapter 1: host-only adapter vboxnet0, adapter PCnet-FAST III, allow VMs, cable connected.
- Adapter 2: NAT, adapter PCnet-FAST III, cable connected.

ifconfig:

Code: Select all

[quan@localhost ~]$ ifconfig
eth0      Link encap:Ethernet  HWaddr 08:00:27:09:2C:5A  
          inet addr:192.168.56.101  Bcast:192.168.56.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe09:2c5a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:38 errors:0 dropped:0 overruns:0 frame:0
          TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:6438 (6.2 KiB)  TX bytes:5855 (5.7 KiB)
          Interrupt:10 Base address:0xd020 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:560 (560.0 b)  TX bytes:560 (560.0 b)

rename3   Link encap:Ethernet  HWaddr 08:00:27:09:2C:5A  
          inet addr:10.0.3.15  Bcast:10.0.3.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe09:2c5a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2 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:1180 (1.1 KiB)  TX bytes:1152 (1.1 KiB)
          Interrupt:9 Base address:0xd240 

Yesterday my VM worked perfectly: i can access the internet from the guest and access the guest from host. However today i cant access the internet from the guest but i can still access the guest from the host. i tried disabling adapter 1 but no good. Any idea how to fix this?

Thanks in advance :)

Re: Can't access the internet in CentOS guest NAT

Posted: 14. Jul 2013, 16:01
by Quan Tran
Sorry everyone, yesterday i set iptables' OUTPUT chain's policy to DROP so i can't do anything. I set it back ti ACCEPT and it works fine now.