CentOS 5 Networking :: Can't Access Any Port From The Internet

Nov 28, 2010

1. I've just installed Centos 5.5 on a dell machine with 2 network interfaces, and have disabled SELinux.

The output for the command sestatus is: SELinux status: disabled

2. Am I right to think that iptables is not a concern since SELinux is disabled? In any case, the output for the command "iptables -L" is:

Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT udp -- anywhere anywhere udp dpt:domain
ACCEPT tcp -- anywhere anywhere tcp dpt:domain

[Code]....

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Mar 1, 2010

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I'm running a CentOS 5.2 on dom0 and two CentOS 5.2 on domU.The domU use virbr0.I install domU via GUI interface and did not change anything ... the domUcan ping and connect to dom0 but can't access to Internet !!I search google and find someone mentioned that I need to enable IP forwardin dom0 ... I did but my domU still can't access to Internet.What else I need to do ?The routing table of dom0 is:

# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface

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Mar 18, 2010

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LinuxA & LinuxB
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linuxA:eth1(202.1.20.45) connected internet

[code]....

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----On the phone---

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------------

After all this, the phone can access the internet through the computer. Two problems appeared:

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So this is at the moment the problem. If I connect from the phone to the internet directly through 3G, the email clients work for all my accounts. I don't think it's a firewall problem, because the ports are opened for this connection

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Can anyone here point me to a walk-through or discussion of how to use Webmin to set up port forwarding/NAT on a dual-NIC Centos 5.3 box? The layout will be simple:

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Is that correct?

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