networking - Redirect domain name mapped with external IP (modem) to a host in its local network -

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i have modem connected router. there 2 computers connected router. want set domain 1 of computers can access web deployment server running in computer internet. used freedns.afraid.org free subdomain. when set up, domain getting mapped external ip address. so, problem when try access set domain, accessing modem's configuration page i.e. external_ip:80

in local network, modem's ip address 192.168.0.1 , router's ip address 192.168.1.1 , computers take ip addresses anywhere between 192.168.1.100 , 192.168.1.148

also, router linksys wrt54g , capable of default ddns configuration dyndns , tzo. since both have become paid services, opted free ddns , i'll use ddns update client update dynamic ip.

i don't know how search problem in google. also, came across port forwarding used under similar topics. new this, can suggest me how redirect domain particular host or there reference page can learn procedure from? solved

update on question (new issue)

since didn't have port forwarding option in modem , modem didn't default forward router, had set modem bridge router. disabled modem's dhcp server , enabled router's dhcp server. allowed me configure port forwarding in router alone , working good.

but problem is, not able access modem's configuration page (192.168.1.1). router @ 192.168.1.2 . subnet mask 255.255.255.0 . tried changing router different subnet 192.168.0.1, internet connectivity didn't establish. tried connecting computer directly modem access it's configuration page, failed.

if want redirect domain particular host need setup nat-virtual server setup .

here need map remote port internal map.

enter image description here

in above image ip address ip of host , default address router's ip address

now have configure nat in router bellow.

enter image description here

in above image server ip host ip address.

i using d-link router image according if using different router might have different view.

after configuring when type external_ip:80 request forwarded application running on host port


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