[TriLUG] Cable modem + firewall + router

Steve Litt slitt at troubleshooters.com
Tue Nov 17 00:11:02 EST 2009


On Monday 16 November 2009 21:52:54 Paul G. Szabady wrote:
> Greetings,
>
> I just upgraded my TWC service to a business class with 5 static IPs.
> Unfortunately, all I got from TWC was a U10C020 AMBIT cable modem/router
> configured in bridge mode.  They won't provide access to configure it, and
> even if they did, I'm not sure it'll do what I want.  What I would like to
> have seems pretty simple and straight forward to me, but maybe I have a
> screw loose.  In essence, I want to have a gateway router (their modem?),
> a firewall that'll route to the static IPs, and of course, 5 ports for my
> servers.
>
> Does anyone have any recommendations?  I have iptables configured for now
> on my linux machines, but the windoze boxen are at risk...  I know,
> there's a windows firewall as well.  But I really need the protection to
> be before the servers, not on them.  (Long story, but it has to do with
> vmware and NAT being too slow for this app.)
>
> Thanks in advance!

Hi Paul,

I'm not sure what you were saying, but here's my Brighthouse configuration:
                                    ________
    |   .-----.   .-----.   .------|Linuxbox|
wall|---|cable|---|IPCop|---|      `--------'  
    |   |modem|   | box |   |       __________.
    |   `-----'   `-----'   .------|Windowsbox|
                                   `----------'

SteveT

Steve Litt
Recession Relief Package
http://www.recession-relief.US
Twitter: http://www.twitter.com/stevelitt





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