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- <li><em>date</em>: Tue May 31 21:01:07 2005</li>
- <li><em>from</em>: jsheets at yahoo.com (Jerald Sheets)</li>
- <li><em>in-reply-to</em>: <<a href="msg01102.html">[email protected]</a>></li>
- <li><em>subject</em>: [ale] Firewall design</li>
<a rel="nofollow" href="http://www.ipcop.org";>http://www.ipcop.org</a>.
--j
--- Christopher Fowler <cfowler at outpostsentinel.com>
wrote:
> Why do you alias for all of them?
> It seems like that you have to assign an ip address
> to your ethernet
> interface.
>
>
> On Tue, 2005-05-31 at 16:33, Jerald Sheets wrote:
> > I do that with my IPCop firewall
> (www.ipcop.org)...
> >
> > It uses your primary ethernet (IP's removed for
> safety):
> >
> > eth1 Link encap:Ethernet HWaddr
> XX:XX:XX:XX:XX
> > inet addr:**.**.**.**
> Bcast:**.**.**.** Mask:
> > 255.255.255.248
> > UP BROADCAST RUNNING MTU:1500
> Metric:1
> > RX packets:37973138 errors:0 dropped:0
> overruns:0 frame:0
> > TX packets:31729095 errors:0 dropped:0
> overruns:0 carrier:0
> > collisions:4922 txqueuelen:1000
> > RX bytes:502443111 (479.1 Mb) TX
> bytes:1688004962 (1609.8
> > Mb)
> > Interrupt:5 Base address:0x250
> Memory:c0000-c2000
> >
> > It aliases the rest of the IP's I was given by
> Speedfactory, and
> > IPCop answers for all of them. I then use ipfw to
> send the two DNS
> > servers to the right internal boxes, and whatever
> is on my DMZ. When
> > configured, those look like so:
> >
> >
> > eth1:0 Link encap:Ethernet HWaddr
> 00:E0:29:49:BA:C9
> > inet addr:**.**.**.**
> Bcast:**.**.**.** Mask:
> > 255.255.255.248
> > UP BROADCAST RUNNING MTU:1500
> Metric:1
> > Interrupt:5 Base address:0x250
> Memory:c0000-c2000
> >
> > eth1:1 Link encap:Ethernet HWaddr
> 00:E0:29:49:BA:C9
> > inet addr:**.**.**.**
> Bcast:**.**.**.** Mask:
> > 255.255.255.248
> > UP BROADCAST RUNNING MTU:1500
> Metric:1
> > Interrupt:5 Base address:0x250
> Memory:c0000-c2000
> >
> > eth1:2 Link encap:Ethernet HWaddr
> 00:E0:29:49:BA:C9
> > inet addr:**.**.**.**
> Bcast:**.**.**.** Mask:
> > 255.255.255.248
> > UP BROADCAST RUNNING MTU:1500
> Metric:1
> > Interrupt:5 Base address:0x250
> Memory:c0000-c2000
> >
> > eth1:3 Link encap:Ethernet HWaddr
> 00:E0:29:49:BA:C9
> > inet addr:**.**.**.**
> Bcast:**.**.**.** Mask:
> > 255.255.255.248
> > UP BROADCAST RUNNING MTU:1500
> Metric:1
> > Interrupt:5 Base address:0x250
> Memory:c0000-c2000
> >
> > the inet address in each case is one of the 5
> consecutives given me
> > by SF.
> >
> > As you can probably tell at this point, I'm a huge
> proponent of
> > IPCop. It's easy to set up, and uses commodity
> hardware. I love it.
> >
> >
> >
> > Jerald M. Sheets jr.
> > Sr. UNIX Systems Administrator
> > McKesson, Inc.
> > 404.293.8762
> >
> >
> > On May 31, 2005, at 3:30 PM, Christopher Fowler
> wrote:
> >
> > > Typically all the firewall's that I've used have
> been the MASQ type.
> > > I've received one public IP address and placed
> that on eth0 and
> > > eth1 is
> > > a private on a 192.168.2.X.
> > >
> > > I am looking at expanding the number of public
> IP's from 1 to 5. I
> > > have
> > > a question as to how this is configured. If my
> GDuo from SF
> > > connects via
> > > a crossover cable to my firewall how do I get
> the remaining 4 public
> > > IP's available to the other devices? Do I
> somehow make them available
> > > on eth1?
> > >
> > > One setup I'm looking at colocating some servers
> at E-Deltacomm. They
> > > will give me 16 public IPs and I want them to
> only go through one
> > > Linux
> > > firewall. This was easy when that firewall was
> also the gateway.
> > >
> > > I guess when I do get the 16 ips they'll give me
> the gw address, the
> > > subnet mask and network address. I could simply
> plug their network
> > > cable into a Cisco switch and then have 16
> servers attached to but
> > > then
> > > they would all be vulnerable to the public
> network. Is there a way I
> > > can plug a Linux box between E-Deltacomm and my
> Cisco switch and
> > > have it
> > > do filtering but not have an IP address on
> either eth0 or eth1. This
> > > could be an invisible inline firewall thingy :)
> > >
> > > Chris
> > >
> > >
> > > _______________________________________________
> > > Ale mailing list
> > > Ale at ale.org
> > > <a rel="nofollow" href="http://www.ale.org/mailman/listinfo/ale";>http://www.ale.org/mailman/listinfo/ale</a>
> > >
>
>
</pre>
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<li><strong><a name="01108" href="msg01108.html">[ale] Firewall design</a></strong>
<ul><li><em>From:</em> cfowler at outpostsentinel.com (Christopher Fowler)</li></ul></li>
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<li><strong><a name="01102" href="msg01102.html">[ale] Firewall design</a></strong>
<ul><li><em>From:</em> cfowler at outpostsentinel.com (Christopher Fowler)</li></ul></li>
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