Bind service to a particular ethernet device

Hi there!

I would like to run two instances (with different configurations) of a
service that runs on a specific port (and I must use that specific port
only). Is it possible to bind each instance of the program to two
different ethernet cards so I can access each service on different IPs?

TIA,

Ignacio

Le Mon, 05 Sep 2005 12:29:30 +0200, Ignacio Garcia a écrit*:

> Hi there!
>
> I would like to run two instances (with different configurations) of a
> service that runs on a specific port (and I must use that specific port
> only). Is it possible to bind each instance of the program to two
> different ethernet cards so I can access each service on different IPs?
>
> TIA,
>
> Ignacio

Hi!

Just set two config files with different IPs, as the IP is binded on an
ethernet device that should do the trick =

--
=Gilles=

Ignacio Garcia <(E-Mail Removed)> said:
>I would like to run two instances (with different configurations) of a
>service that runs on a specific port (and I must use that specific port
>only). Is it possible to bind each instance of the program to two
>different ethernet cards so I can access each service on different IPs?

Yes, if the configuration of the program allows -- or in other words,
yes, if the program was written to allow this.
--
Wolf a.k.a. Juha Laiho Espoo, Finland
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"...cancel my subscription to the resurrection!" (Jim Morrison)

Ignacio Garcia wrote:
> Hi there!
>
> I would like to run two instances (with different configurations) of a
> service that runs on a specific port (and I must use that specific port
> only). Is it possible to bind each instance of the program to two
> different ethernet cards so I can access each service on different IPs?
>
> TIA,
>
> Ignacio

It depends on the program itself.

If it's a service that is started by xinetd (like a pop3 server, for
example) then add a "bind" option to the /etc/xinetd.conf or better the
relevant file in /etc/xinetd.d (this is the location on redhat/fedora
distribs)

The bind option takes the IP address of the interface, as in..

service pop3s
{
disable = yes
socket_type = stream
wait = no
user = root
server = /usr/sbin/ipop3d
log_on_success += HOST DURATION
log_on_failure += HOST
bind = 192.168.0.123
}

Chris

--
Rope: The scripting language that runs INSIDE the linux kernel for
writing iptables packet-matching modules.
http://www.lowth.com/rope

On Mon, 05 Sep 2005, Ignacio Garcia <(E-Mail Removed)> wrote:
> Hi there!
>
> I would like to run two instances (with different configurations) of a
> service that runs on a specific port (and I must use that specific port
> only). Is it possible to bind each instance of the program to two
> different ethernet cards so I can access each service on different IPs?

You do not even need a separate nic. You could bind another instance to
same port of an alias IP on same nic (assuming the service has provisions
to bind to a specific IP).