On Sat, 16 Jul 2011, Ljubomir Ljubojevic wrote:
> To: CentOS mailing list <centos@xxxxxxxxxx>
> From: Ljubomir Ljubojevic <office@xxxxxxxx>
> Subject: Re: firewall?
>
> Keith Roberts wrote:
>> So I guess I could configure my single NIC Centos 5.6
>> machine connected to a 4 port ADSL router to act as the
>> external Gateway for other machine on the LAN side of the
>> router, possibly using NAPT on the Centos box?
>
> Yes, you can do that. You can also use it as a proxy server.
>
> When I said "firewall", I meant as firewall for the network, facing
> outside of the local network. There were people who would bring public
> (or semi-public, from ISP) IP to the switch and then hook up all PC's to
> that switch and use 2 subnets, one that ISP provided and one for the
> local LAN, all on the same switch, to save on hardware. That is not safe
> and not wise.
>
> Having firewall, as a software, running on the PC/server is good
> practice, sometimes even in the local environment, if you use it in the
> network that "external" people will hook up their PC's to and you have
> important data on it. Rare cases, but do exist. Better safe then sorry.
OK. Thanks for confirming that Ljubomir!
Regards,
Keith
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