My home network connects to my ISP through an ADSL modem/router in bridged mode. I have the following setup:
|
ADSL modem/router, bridged mode
|
| x.x.x.x public IP on WAN interface
Router with DHCP server
|192.168.0.1
|
LAN and WLAN
several devices with dynamic IPs 192.168.0.100 - 192.168.0.200
In this setup I can't access the web interface of the modem/router, since it has no IP. If I assign it a static IP 192.168.0.5
, it's not reachable. If I assign it a static IP 192.168.1.5
with netmask 255.255.0.0
, it's not reachable either. I suspect the router wraps all packets to foreign IPs and sends it over the modem/router-bridge without ARP'ing the network at the WAN interface of the router.
Now I make a connection between the Router LAN interface and the Router/Modem LAN interface, between point X1 and X2. This occasionally works, but sometimes it happens that the router gets an IP of its own DHCP server, the network ends up in infinite recursion of packets,... All understandable in this setup, BUT I can access the modem/router web interface.
|
ADSL modem/router, bridged mode
|192.168.0.5
|
|----------...X1
|
| x.x.x.x public IP on WAN interface
Router with DHCP server
|192.168.0.1
|
|----------...X2
|
LAN and WLAN
several devices with dynamic IPs 192.168.0.100 - 192.168.0.200