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WANs are easier to hack because it is not confined to a small space like LANs, instead it is spread over the whole world. imagine a security squad of 10 people, they can protect a small area(the LAN), but they find it hard to protet a vey big(the WAN).

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if you add more offices to a business, then you need to change the LAN to a WAN, therefore making the reach of your communictions wider. this is one of the reasons that expanding a business is so hard nowadays.

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this is what i found and found it very intresting

Local Area Networks (LANs)

Advantages

Disadvantages

Speed

Cost

Ease of Setup

Limited to Small Area

LAN connections can only operate in a local area which is usually not any bigger then a house, or a floor in an office building. Typically a LAN will consist of only a handful of clients, but can have upwards of a hundred.

One of the major advantages with LANs are the speeds they can reach. With a LAN, it isn’t uncommon to see technology ready for 1Gbps (1 gigabit per second). Example: If you were to download all 3 816 000 English articles off of Wikipedia it would take just over 13 hours to do so, where as a WAN would take 16 days to do the same. A LAN can operate up to 30x faster then a WAN

Another advantage to having a LAN connection is the cost. It is relatively cheap to have as it tends to require less hassle to set up and less advanced infrastructure to keep it running. This is mainly due to the technological components of a LAN, which brings me to the next difference.

A LAN connection tends to require some relatively simple things to set it up. All you need is some Ethernet cables, a network switch, and you are good to go. Alternatively, you can also see LANs being done over Wi-Fi, or you can use Wi-Fi in conjunction with standard Ethernet connections to create a LAN available to all kinds of devices, whether it be a smartphone or a desktop computer.

The major disadvantage with a LAN is inherent in its name. “Local” Area Networks are only good as far as you can reach an Ethernet cable or Wi-Fi signal. Simply put, you cannot buy an Ethernet cable that will reach throughout an entire building, and a Wi-Fi connection rapidly deteiorates as you get further then a few dozen meters away.

Wide Area Networks (WANs)

Advantages

Disadvantages

Allow for much larger and more intricate network

Can cover near infinite geographical distance

Cost

Speed

Ease of Use

A WAN connection should truly only occur in large environments. WAN connections are available from house to house, city to city, and country to country. In fact, just by reading this you know you have access to a very popular WAN, the Internet. But what separates a WAN like the internet from a LAN?

Due to it's typically massive size, WAN's are almost always slower then a LAN. The further the distance, the slower the network.

One of the big disadvantages to having a WAN is the cost it can incur. Having a private WAN can be expensive. The reason that WANs cost a lot tends to be because of the technology required to connect two remote places, which brings me to the explanation of the technology behind a WAN.

A WAN connection is generally harder to set up, and there are many creative ways to do so. One very common way is renting a line from an internet service provider and using their network (that’s already connecting the nation and the world) and connecting your point A and B. Another way to do a WAN is connecting the devices with various wireless technologies, like cellphone towers or satellites. As you can imagine, all these are much harder to create than setting up a LAN and almost always demand high level professional setup and maintenance.

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importancia y definicion de las redes de computadoras

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businesses us WAN a lot, especialy if they are international

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because I am a hard-core gamer, i use both LAN and WAN, if you want to play with your friend who is far away, I use WAN, if your friend is right next to you i use LAN

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Comparison chart

LAN

WAN

Stands For | Local Area Network | Wide Area Network
Covers | Local areas only (e.g., homes, offices, schools) | Large geographic areas (e.g., cities, states, nations)
Definition | LAN (Local Area Network) is a computer network covering a small geographic area, like a home, office, school, or group of buildings. | WAN (Wide Area Network) is a computer network that covers a broad area (e.g., any network whose communications links cross metropolitan, regional, or national boundaries over a long distance).
Speed | High speed (1000 mbps) | Less speed (150 mbps)
Data transfer rates | LANs have a high data transfer rate. | WANs have a lower data transfer rate compared to LANs.
Example | The network in an office building can be a LAN | The Internet is a good example of a WAN
Technology | Tend to use certain connectivity technologies, primarily Ethernet and Token Ring | WANs tend to use technologies like MPLS, ATM, Frame Relay and X.25 for connectivity over longer distances
Connection | One LAN can be connected to other LANs over any distance via telephone lines and radio waves. | Computers connected to a wide-area network are often connected through public networks, such as the telephone system. They can also be connected through leased lines or satellites.
Components | Layer 2 devices like switches and bridges.Layer 1 devices like hubs and repeaters. | Layers 3 devices Routers, Multi-layer Switches and Technology specific devices like ATM or Frame-relay Switches etc.
Fault Tolerance | LANs tend to have fewer problems associated with them, as there are smaller number of systems to deal with. | WANs tend to be less fault tolerant as they consist of large number of systems.
Data Transmission Error | Experiences fewer data transmission errors | Experiences more data transmission errors as compared to LAN
Ownership | Typically owned, controlled, and managed by a single person or organization. | WANs (like the Internet) are not owned by any one organization but rather exist under collective or distributed ownership and management over long distances.
Set-up costs | If there is a need to set-up a couple of extra devices on the network, it is not very expensive to do that. | For WANs since networks in remote areas have to be connected the set-up costs are higher. However WANs using public networks can be setup very cheaply using just software (VPN etc).
Geographical Spread | Have a small geographical range and do not need any leased telecommunication lines | Have a large geographical range generally spreading across boundaries and need leased telecommunication lines
Maintenance costs | Because it covers a relatively small geographical area, LAN is easier to maintain at relatively low costs. | Maintaining WAN is difficult because of its wider geographical coverage and higher maintenance costs.
Bandwidth | High bandwidth is available for transmission. | Low bandwidth is available for transmission.
Congestion | Less congestion | More congestion

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watch this