Thanks a lot for your reply.
Let me explain: my cable router is connected to ASDL moderm( this moderm connected to the internet) then I used Lan cable to connect my Linux server to this router. I also used Lan cable to connect one more router(wireless router) to cable router. My Linux server connected directly to cable router. My laptop, desktop pc are connected to wireless router by cards.
I have a global IP address, I can see this IP when I configured cable router, then I set Lan IP for cable router is 192.168.1.1 , subnet : 255.255.255.0 . At this time, my linux server has IP : 192.168.1.5, and I saw that my wireless router has IP: 192.168.1.3, and I set those IP as static IPs. Next, I configured my wireless router, this router has WAN and Lan settings, I set ist WAN IP is 192.168.1.3 , subnet 255.255.255.0, default gateway: 192.168.1.1, DNS: 192.168.1.1 . Then Lan setting: I set this router with IP 192.168.2.1 , subnet 255.255.255.0
First time I have two routers , so I don't know how to configure them because of my limited knowlege
Thanks to reply and I am waiting for any replies. Thanks in advance.