Static IP aliases with Dynamic IP

[Sheer El-Showk]

Hi,

I'm not sure exactly what you're trying to do, but if I'm right in my
guess then what you're doing can't work.  I don't know where you're
getting a static IP address from (is it in a private IP subnet --
10.0.0.0, 192.168.0.0, or the other one?) but if you're being dynamically
assigned an IP address by your ISP then there is no way that it is being
routed to you.  That is, even if you do set that address up in your DNS,
and people can resolve the name to an IP address, they won't be able to
access you're machine because that IP is not likeley being routed to your
machine (just setting up the address on ppp0:0 doesn't mean that any
packet on the internet destined for that address will be routed to your
machine).  If the address is in the private subnets I mentioned earlier
then its not even a real, routable address and there is little you can do
(but try to get a real address).  If the address is a real static-IP you
have elsewhere that just isn't being routed to you, then you can use
something like a Virtual Private Network (running a ppp connection over
and ssh connection -- check out linux HOWTOs at www.linuxdoc.org) to
connect the real address to your dynamic address and have packets routed
between them (of course the connection will have to be initiated by the
dynamic address side each time it gets a new address).  Hope this helps,
and sorry if I misunderstood you -- I don't have any real experience with
VPN but feel free to contact me if I can help anymore.

Regards,
Sheer

On Mon, 1 May 2000, Mark Lo wrote:

> Hi,
> 
>      I would like to know whether this would work or not,  I have a dial
> up access to my ISP, then it assings a Dynamic IP to me,  So , I make an
> alias with my Static IP to this Dynamic IP. Thus, Dynamic IP is ppp0 and
> the Static IP is ppp0:0.   Okay..My question is that Can people find me
> using my Static IP in this situations.  I have tried it, but it doesn't
> work.  I would like to know whether this is my own problem or Alias
> doesn't work the way I did???
> 
> Thank You
> 
> Mark Lo
> 
> 
>