On 11/23/05, John covici <[EMAIL PROTECTED]> wrote: > This is sort of a shot in the dark, but in our router config it may > mention the address somewhere -- do you have any static nat's i.e ip > nat static ... for port forwarding?
>From what I remember, I am using source nat'ing. But I am using port forwarding. Both of those reference eth0, not the ip address. > Hope this helps. > > on Wednesday 11/23/2005 Grant Thomas([EMAIL PROTECTED]) wrote > > Hello all, and thanks for any help in advance. > > > > The problem I am having today is dealing with changing the external IP > > address of a router / firewall. > > > > To change the IP address, I edited the /etc/network/interfaces file, > > and changed the address from xx.xx.97.99 to xx.xx.97.100 > > Then I ran the following: > > ifdown eth0 > > ifup eth0 > > ifconfig > > > > ifconfig shows the correct address of xx.xx.97.100 > > > > I thought all was well. > > When I go to any site, the address is still reported as xx.xx.97.99 > > I have tried rebooting the machine, but to no avail. > > > > A little background would be helpful. > > > > This machine is a firewall / router, used for a network of about 30 users. > > The firewall is iptables, and is runnint tc for traffice control. > > The machine is also the dhcp and dns server. > > > > The external interface, eth0, is connected by ethernet to a T1. > > The T1 is accessed through a Cisco router. > > > > In addition to this, something else happened on an ip address change, > > after the reboot. > > > > I changed the address from 97.99 to 97.100, and the machine would see > > its gateway, 97.97. > > It would not pass any packets past that however. > > Once I changed the address back to 97.99 packets started passing no > > problem, and I didn't reboot the machine either. > > > > Now, if I change the ip address back to 97.100, the internal network > > can access the internet with no problem, but the router has extrememly > > high latency pinging, etc. > > > > Thinking it could be an ARP problem, I also restarted the Cisco > > router, but to no avail. > > > > I have checked the iptables configuration, as well as the tc > > configuration. Neither of these files references the specific 97.99 > > address, refering to the port as eth0 instead. > > > > > > > > Any help would be greatly appreciated. > > Thank you all so much. > > > > -- > Your life is like a penny. You're going to lose it. The question is: > How do > you spend it? > > John Covici > [EMAIL PROTECTED] >
