Sorry for the long explanation.
About 2 years ago a client of mine was running an old Wang mini computer for their internal business applications but the hardware maintenance cost where becoming astronomical. I found a company that created a custom VM which allowed the company to continue to run the Wang operating system and COBOL application on Dell Poweredge running OpenSuse (Linux) running the OS in the VM. In addition, I took the opportunity to install a Dell PC which I am using as a Web Server & Email server using Debian. We originally had AT&T DSL with a static IP and an older 2Wire modem which acted as a wireless router. There are about 15 to 20 PC both wired and wireless that connected for internet access and internal access to the Wang VM. I had all of this working including the Email which is/was accessed by salesman all over the country and the Website. Then some horse-ass in the company decided to upgrade to AT&T Uverse and my HELL began first my Static IP was dropped and we where switched to dynamic. The DSL modem we had was switched out for a 2wire 3801hgv router. When nothing worked I was finally called. We now have 8 static IP's of which 6 are usable by design. It appears that no one in tech support really knows how to configure the router properly to get me access to my Static IP's as well as allowing the router to issue dynamic IP's for my internal wireless pc's which are mostly Windows XP, Vista, and a few Linux. IT support goes dumb as soon as I mention my Linux servers. Also no manual comes with the router but I have finally managed to find a copy on the internet but I am by no means a Network expert. I know I have to change the "interfaces" file to get the server to recognize the Static IP and change or have changed my DNS for the new static IP. What else do I need to change and what other IP addresses do I need off the router to get my client back up.
Sorry if this is the wrong place to post, if better place let me know.
Edit:
The static IP's are as follows;
- xxx.xxx.xxx.144 Static IP (non usable) Host
- xxx.xxx.xxx.145 Static IP to a PC running Debian
- xxx.xxx.xxx.146 Static IP to OpenSuse running the VM
- xxx.xxx.xxx.147 Static IP future use
- xxx.xxx.xxx.148 Static IP future use
- xxx.xxx.xxx.149 Static IP to Debian Web & Email Server
- xxx.xxx.xxx.150 Static IP (non usable) Gateway
- xxx.xxx.xxx.151 Static IP (non usable) Broadcast
the netmask for the group is 255.255.255.248 according to AT&T The router itself has it's own static ip, netmast and gateway.
I know I have to change the /etc/network/interface file on the Debian servers: auth etho iface inet static ip address (would be one of the static IP listed above) question is should the netmask and the gateway IP's be the netmask and gateway IP of the static group or of the router which has a separate static IP, netmask, & gateway. I have already changed over the DNS server IP address for the web and email server.
I don't really expect anyone to be able to help with the router configuration. I have talked to tech support on three separate occasions and had them factory reset the router/modem three different ways. I have eliminated one way it could be setup because it would limit the wireless PC because of limiting dynamic assignment.
Sorry for grammer and misspelling but it now 1:00 AM and I been struggling with this all day and night and tech support hell.
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