Here is a short brief on my network
 
My network have both Public IP Address and Private iP Address
For this example My Public IP Addresses are 194.90.1.x  
And my private IP Addresses are 192.168.0.x
 
Linux A - IP Address 194.90.1.253 Work as Default Gateway of my  public IPs
              I am using IPTABLES to manage access list and firewalls
 
Workstation B - IP Address 194.90.1.1  With Default Gate 194.90.1.253
                        Is able to ping the Internet via eth0
 
Workstation C - IP Address 192.168.0.1
 
 
I Want Workstation B Will be able to PING the private network,   so i have set up on Linux A
 
eth0:1   with IP Address 192.168.0.5
 
* i have sent ping from Workstation B to 192.168.0.5     And i have got echo reply.
* Also ping from Linux A with the new IP Address (192.168.0.5)  to Workstation C gets echo reply.
 
 
The only thing that i have left is to set up routed   to make   packets that come from eth0 will forward
to eth0 ,   Yes thats the same interface i know ;-)
 
 
How Will i do that
sincerly
Juda B Barnes