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It decides where data should go on a network.
Imagine a company's network. One user sends an email to someone else. Their computer sends the email to the router, which then sends it out to the mail server. The mail server then sends out a message to the other user's computer telling them that they have received an email. The router picks this up and sends it in the correct direction.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoThe main role of a router is to connect different networks. In the case of a WAN, the router provides connectivity between the LAN and the WAN. A router may also have additional roles, such as:
NAT - address translation; this is quite common in today's networks, because public IP addresses are scarce. Therefore, a single IP address is shared between an entire network.
SECURITY-through access lists.Running routing protocols, to automatically update information about available routes in larger networks.Add your answer:
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Which device is best for connecting a lan to a wan?
A router.
What is the difference between a lan and a wan according to access them?
From the user's point of view, accessing a LAN or WAN is the same. If packets need to be forwarded from a LAN via a WAN connection that is taken care of automatically by the router.
What is a cascaded router and why would would it be used for?
A cascaded router because is a router connected to another router. As far as I know, there's two ways you can connect two routers together. One is from a LAN port to the WAN port of the other router and the other is LAN port to LAN port. LAN to WAN is useful for things such as network segmenting, say that you want the LAN of the first router not to be able to see the LAN of the second router. That can work. Whereas with the second way, the second router pretty much becomes a switch and you can have access to devices on both networks without the need for port forwarding. Consider it acting as a swithc with a IP address pretty much. However in this method you have to make sure the LAN IP of the second router is within the same subnet as the first in order for this to work. So let me give you a example of how it can be setup: LAN to WAN: Router A WAN IP: Issued from ISP (Usually through DHCP) LAN IP: 192.168.1.1 Subnet Mask: 255.255.255.0 Router B WAN IP: Issued from the DHCP server of the first router or can be statically set to be a address within the first routers LAN LAN IP: 192.168.2.1 Subnet Mask: 255.255.255.0 Note: With this method, computers on Router B can connect to devices on Router (including the router itself) but not vice versa. Also...you cannot access computers via NetBIOS names (computer names) in this setup. You have to access them by their client LAN IP LAN to LAN Router A WAN IP : Issued from ISP (Usually through DHCP) LAN IP: 192.168.1.1 Subnet Mask: 255.255.255.0 Router B WAN IP: Not used since nothing is connected to the WAN port LAN IP: 192.168.1.254 Subnet Mask: 255.255.255.0 Hope this helps you out. :)
Lans can be connected bydevices called?
LAN can be connected by routers . A router can be used to connect to LAN's .a LAN to a WAN and LAN to Internet.
What section of the network connects the LAN internal to WAN external?
A Router/Modem
What is needed to connect wan to lan?
Typically a LAN is connected to other networks (WANs, etc) via a router, used as a default gateway device.
How you can acess LAN to WAN?
With a router or firewall or bridge. LAN is Local Area Network (inside a building) WAN is Wide Area Network (building to building, but inside the same organization).
What is connected to a LAN?
computers in one office
How is LAN different from WAN?
LAN is internal. IE, your computer, router, modem. WAN is external, such as your computer, a server on the internet, a corporate database. Not to be confused with WLAN, which is wireless LAN
How do you simultaneosly connect two computers to internet using a router and broadband modem?
Plug the two computers in to the router, and connect the router to the modem.The router may have two kinds of ports, one port marked WAN (Wide Area Network) and several ports marked LAN (Local Area Network). If so, the WAN port goes to the modem and the LAN ports are for your computers.That's it.
What is wan in a router?
WAN Stands for "Wide Area Network", and is the terminology used to describe networking on a geographical scale.
Is the internet a LAN or WAN?
WAN. LAN is a short range connection, WAN is wide range.
