Gentoo Archives: gentoo-user

From: Hans-Werner Hilse <hilse@×××.de>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Double network cards
Date: Mon, 11 Jun 2007 15:13:32
Message-Id: 20070611170553.cd6b54b6.hilse@web.de
In Reply to: [gentoo-user] Double network cards by Marco Calviani
1 Hi,
2
3 On Mon, 11 Jun 2007 16:19:58 +0200 "Marco Calviani"
4 <marco.calviani@×××××.com> wrote:
5
6 > i would like some technical advice concerning the possibility of
7 > mounting two network devices on the same desktop computer. One network
8 > card (which is binded to a fixed IP) allows me to allow the machine to
9 > be visible on the public network, while the second one (faster, the
10 > one i've installed now) is used to work. Would it be possible to
11 > install both of them, with the first one used only for accessing the
12 > machine from an external site?
13
14 >From hardware and driver side of the problem: Yes, of course. The other
15 question, and you really didn't clarify on this, is whether your
16 intended routing setup would work with such a configuration. But since
17 Linux is extremely configurable in that regard, you probably can
18 archive sensible results. Just specify a bit more information, like the
19 networks (address/netmask) coming into play here.
20
21 If both of your NICs are routing to the internet and you're offering
22 services to the internet, the answer packets from those services will
23 always take the route w/ lowest metric by default. You'd have to mark
24 the packets e.g. w/ iptables on a user or application basis in order to
25 influence routing so that outgoing "service traffic" takes another way
26 than outgoing "other traffic". But don't hesitate to tell more about
27 your intended setup, it'll get probably easier to help you then.
28
29 -hwh
30 --
31 gentoo-user@g.o mailing list

Replies

Subject Author
Re: [gentoo-user] Double network cards Marco Calviani <marco.calviani@×××××.com>