I have a SBS 2003 with 2 NICs, Internal + External. External NIC is connected directly to the SDSL router that provide me an external IP (I have 192.168.0.3 that goes to 87.xxx.xxx.x)
The internal NIC is connected to the switch for clients LAN access, and this switch is connected to another router for users internet access. This switch can provide another address to my internal NIC server (192.168.1.2 can goes to 85.xx.xxx.xxx). This I used only when the main router is down.
My problem is that sometimes my server can?t access the internet or can?t be accessed from internet. I have a web page, ftp and OWA on this server. If I activate the gateway for the internal NIC is working fine.
I rerun the Internet and Email wizard but was working only 1 min. after I accessing from outside my web page the server was stuck. If I put manualy the Ip provided for internal NIC is working perfect !
After some minutes the external NIC is working again…
I have the next configuration:
Internal LAN
IP 192.168.1.2
mask 255.255.255.0
Gateway: nothing (192.168.1.1 only when I want to go out through this provider)
DNS 1: 192.168.1.2 (himself)
DNS 2: nothing
External NIC
IP 192.168.0.3 (the router is providing 87.xxx.xxx.1 for outside)
Mask 255.255.255.0
Gateway: 192.168.0.1
DNS 1: 192.168.1.2 (my internal DNS)
DNS 2: 87.xxx.xxx.x (my ISP dns)
What is wrong ?