D-Link DI-1162M manual Remote Network Connections

DI-1162/DI-1162M Remote Access Router

6.In the case where the Dial-In User does not need to supply a Username and Password (Auth Type is set to None in the Interface Configuration submenu) the remote computer must have its own IP address.

Remote Network Connections

Remote networks are defined as other networks (LANs) that have WAN connections using a router, Internet server, network modem or similar device (in this document however, we will assume the remote device is a router). In almost all cases, a Remote Network Profile needs to be set up for each network that will connect to the DI-1162/DI-1162M via a WAN connection. The Remote Network Profiles are necessary for the router to identify and tailor the connection to the remote network’s router. Once this is done, a connection between the two routers can be made and computers on each network can communicate with each other.

Dial-In Network Connections

A dial-in network connection is very similar to a dial-in user connection. When the remote router dials into the DI- 1162/DI-1162M, the call comes into the WAN port and after answering the phone, the DI-1162:

1.Identifies the Username and Password using the authentication protocol defined in the Interface Configuration!WAN submenu.

2.Checks the Username and Password against those defined in the Dial-In User Profiles and Remote Network Profiles.

3.Assuming a matching Remote Network Profile is found, the router may configure the IP address of the remote station (as defined in the Remote Network Profile).

4.Configures the specified WAN Interface (a virtual circuit) using the configuration parameters defined in the Interface Configuration menu and the Remote Network Profile to handle the connection.

5.Establishes the connection.

Dial-Out Network Connections

Dial-out network connections are much different than dial-in connections.

When a packet on the LAN reaches the router, the DI-1162/DI-1162M will:

1.Check it’s routing table to try to identify where this packet should go. It looks for two variables in the routing table, Gateway address and Interface. There are four possible results:

I.In the case where the destination resides on the LAN, the router will send out an ARP request to obtain the MAC address of the destination computer and deliver the packet. Note that defining Static ARPs can speed up delivery since the router won’t need to send out an ARP request.

II.In the case where the router finds a match in the routing table, it uses the Gateway address and Interface numbers to identify the correct Remote Network Profile to use to dial out. From the Remote Network Profile, the router gets the telephone number and other information and dials out, establishes a connection and delivers the packet

III.In the case where no match is found in the routing table, the router will search for IP Static Routes. If a match is found in the static routing table, the router will use the information there to find the correct Remote Network Profile to use to dial out. If you have a connection to the Internet, it is very important that you define the default next hop router in the IP Static Routes submenu of the console program as your ISP (see the IP Static Routes section of this manual for more detailed configuration information). This is because if a user on your LAN makes a request to download a web page for the first time, for instance, since it is the first time, the DI-1162/DI-1162M will not have any record of the web page’s IP address. If no default next hop router is defined, the request will be dropped and the user will get a ‘Destination Unreachable’ error message. However, if a default next hop router is defined in the IP Static Routes, the DI-1162/DI-1162M will pass this request on to the ISP (the request will go through) and the user will receive the web page.

IV. In the case where there is no match for the destination IP address in the routing table or the static routing table, and no default next hop router is defined, the packet will be dropped and no action will be taken.

The Remote Access Configuration submenu is shown below. All items in the submenu are described as follows.

45