Internal device network

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Your network device (commonly referred to as a "router") has an internal network. The internal network connects the internal physical(=hardware):

  • switch
  • wireless access point

with the:

Contents

[edit] Modifying internal network

Via the user interface you can modify how the hardware is logically interconnected with each other and with your software services.

Note: It is easy to lock yourself out of your network device and if/when this happens (use the waiting time checking the PC's ip settings - try release/renew the dhcp lease if not ok):
  • First: Wait some minutes - it might just be a temporary glitz.
  • Second: Try to restart the device, because it might just be a device service that need to be restarted.
  • Last resort: Restore to the firmware defaults by resetting the device.

[edit] Internal network services

The software services are serviced by the network processor (ARM, MIPS...). Please note that the possibilities are limited by the software implementation and hardware.

List of non-exhaustive internal software services:

[edit] Software network interfaces

The software network services is connected by you, to physical or logical network interfaces. The interfaces might be a:

  • physical interfaces might be labelled eth0, eth1...
  • logical might be a bridge (=switch) labelled br0, br1...
  • logical vlan labelled vlan0, vlan1....

and maybe:

The default internal device networks in a non-802.11n network device - specifically the default configuration of a DD-WRT V23-SP2 firmware on a Linksys WRT54G v2. In a network device containing a 802.11n wireless access point the internal numbering of ports, bridges and vlans are different.
The default internal device networks in a non-802.11n network device - specifically the default configuration of a DD-WRT V23-SP2 firmware on a Linksys WRT54G v2. In a network device containing a 802.11n wireless access point the internal numbering of ports, bridges and vlans are different.

.

[edit] Examples of changed internal network

There are examples of how to move the wireless acces point on a separate vlan, so it can be separately firewalled:

There are examples of how to assign a wired LAN port to some vlan different from the rest of the LAN ports:

There are examples of how to have more than one ssid on the wireless acces point:

Combinations of the above: