How to restrict use of IP address (alias) on outgoing connection ??

Hi all,

I have following set up on my system.

eth0 : IP : A.B.C.D and
eth0:1 IP W.X.Y.Z (this is an alias . I am using FC5 -32
bit linux)

What i want to do is , hide this IP address (one with eth0:1 ) from
all the outgoing connections from this machine if this request is from
a process other than my process.
Also all of my processes should use only W.X.Y.Z
How do i achieve this ?? I have a kernel module inserted onto this
system.
Any ideas what i need to do , so for rest of processes there is not
such ip address W.X.Y.Z. and kernel wont select this ip address for
any outgoing connection ???

Thanks in advance

TellMeMore

Rohit wrote:
> Hi all,
>
> I have following set up on my system.
>
> eth0 : IP : A.B.C.D and
> eth0:1 IP W.X.Y.Z (this is an alias . I am using FC5 -32
> bit linux)
>
> What i want to do is , hide this IP address (one with eth0:1 ) from
> all the outgoing connections from this machine if this request is from
> a process other than my process.
> Also all of my processes should use only W.X.Y.Z
> How do i achieve this ?? I have a kernel module inserted onto this
> system.
> Any ideas what i need to do , so for rest of processes there is not
> such ip address W.X.Y.Z. and kernel wont select this ip address for
> any outgoing connection ???

There is no per-user routing. The best thing I could suggest is look
into per-user netfilter mangling using the --uid-owner match. I've
never done it. "man iptables" for more info.