A LAN is a network within a range, such as a company's own internal network, and a WAN is an Internet network, a network that can interconnect globally.
Identifying whether a machine is on an extranet relative to you, or an intranet, depends on the IP of the other party; if the other party is on the same intranet as you, the other party uses a private IP, and if the other party is on an extranet, the other party has to use a public IP.
The IANA (Internet Assigned Names and Addresses Association) enforces a few types of IPs for intranets. There are three classes,
Class A 10.*. *. * Subnet mask is 255.0.0.0
Class B 172.16.*. * The subnet mask is 255.255.0.0
Class C 192.168.0.* The subnet mask is 255.255.255.0
Except for IPs above 127.0.0.1 and 224, all other IPs are public IPs.
You can tell which one is public and which one is private.
Question 2: The difference between an intranet and an extranet An intranet is an internal LAN. All the computers in your organization are on an intranet, so of course they can access each other.
You're not talking about going on the extranet at home, exactly that is called the Internet. The Internet is the network that connects all the intranets together (including metropolitan area networks (MANs), corporate intranets, and so on). But here we have to take into account your unit's intranet has on the Internet? If there is on the terrier words, you can access the unit's computers.
Question three: intranet extranet LAN what is the meaning of the difference and contact intranet is LAN, Internet cafes, campus networks, office networks belong to this type. In addition, fiber to the building, community broadband, educational networks, cable TV Cable Modem Internet access, although the geographical scope is relatively large, but essentially still based on Ethernet technology, so it still belongs to the intranet. Extranet: Internet. Unicom, Telecom, Mobile, etc. have exceeded the coverage of the LAN, should be considered as an extranet. The key to determine the extranet and intranet is whether it is interconnected with the vast outside world. The concept that Dan said is this, world wide web. it is the interconnection of the world. No matter what broadband you use, as long as you are connected to the internet, can be interconnected with the outside world (world wide, except for legal requirements), is the extranet. Unlike an intranet, which can be millions of computers, an extranet is basically no more than 5,000 computers.
Question 4: What is the meaning of the extranet and intranet The extranet is the Internet ah A comparison you are now on Baidu is the extranet
The intranet is the intranet system of the company or individual composed of their own Mainly used in the office and **** enjoy!
General extranet we call the Internet
intranet we call the LAN
Question 5: The difference between the intranet and extranet, what is the meaning of the use of the two, to solve the intranet in fact is the internal local area network (LAN), the extranet is with the intranet as opposed to the network outside the LAN network, that is, the conventional meaning of the Internet.
The intranet can only be accessed by internal users, and the extranet can be accessed by any user
Question 6: What do internal and external and extranet mean? Extranet:
A Wide Area Network (WAN) is also known as a long haul network. Usually spanning a large physical area, covering from tens of kilometers to thousands of kilometers, it can connect multiple cities or countries, or across several continents and can provide long-distance communication, forming an international remote network.
Intranet:
A Local Area Network (LAN) is a group of computers interconnected by multiple computers in a given area. It is usually within a few kilometers of a radius. LAN can realize the functions of file management, application software **** enjoyment, printer **** enjoyment, scheduling within a workgroup, e-mail and fax communication services. LANs are closed and can consist of two computers in an office or thousands of computers in a company.
Question 7: What does intranet and extranet really mean ah Many broadband users can not figure out whether they belong to the intranet or extranet, so that in the use of BT and other software to download before the blind port mapping and other operations, but instead of twice the effort. First of all, I would like to correct a common mistake. We often hear such as "so-and-so ADSL is an intranet" or "so-and-so ADSL is an extranet", this statement itself is wrong. Because "ADSL broadband" is only a form of service provided by the broadband operator, it is only a technology, a business, and there is no concept of intranet or extranet. What we mean by intranet or extranet is whether the computer of the end-user using this ADSL broadband service is currently located in an intranet or extranet. Or in other words, whether the end-user's computer is an intranet or extranet is entirely a matter of how he uses this ADSL broadband service, and has nothing to do with which form of broadband he is actually using. The following first gives my conclusion, and then a detailed analysis: 1, the first situation: the use of telecommunications ADSL users, if there is only one user a computer in the use of this broadband, did not use the routing function, but with the dial-up software directly dial-up the Internet, in this case, the user is currently in the network for the extranet; or even more simply put, the Telecommunications Bureau sent someone to install the ADSL, and nothing has been changed, the case, the user is now in the network for the extranet; or even more simply, the Telecommunications Bureau sent someone to install ADSL, what have not changed the case, this time the computer belongs to the extranet; 2, the second situation: the use of telecommunications ADSL users, if the ADSL modem set up a routing function, more than one person *** with the use of the same ADSL line for Internet access, this time, each computer belongs to the intranet; 3, the introduction of a more special form of broadband: intranet in the intranet; in the specific analysis of the former, the first explanation for the intranet and extranet, the user's current network for the extranet; or more simply put, the Telecommunications Bureau sent someone to install the ADSL, what is not altered. First of all, the judgment criteria for the intranet and extranet: (quoted from the BitComet help information) 1, one of the judgment criteria: 0.50 or above version of BitComet's "Global Statistics", the external IP is the public IP, the internal IP is the intranet IP, if these two values are the same then you If these two values are the same, then you are a public user, otherwise you are an internal user. Of course, intranet users can get the same effect as public network through port mapping. 2, the judgment standard two: with MSN Messenger "Tools - & gt; Options - & gt; Connections" in the "Advanced Connection Information" (Note: Here with the MSN Messenger, not Windows Messenger. Windows Messenger advanced connection information and MSN Messenger is not the same). Advanced Connection Information has the following types: "Direct Connection" means that the user is on a public network and does not use the Internet Connection Firewall (ICF) that comes with Windows XP, and does not need to use UPnP. However, this does not exclude that the user has installed a third-party network firewall software, such as Norton Network security police 2002/2003/2004 series, the domestic famous Skynet firewall and so on. This kind of users in the use of BT, as long as the BT software listening to the port has not been blocked by the ISP, generally do not need to set up how to achieve the best speed. Users who have installed a third-party network firewall should be careful to allow the firewall to allow the BT software to listen to the required ports. "Direct connection, using Internet Connection Firewall (ICF)" means that the user is on a public network, using the Internet Connection Firewall (ICF) that comes with Windows XP, and does not necessarily require the use of UPnP. To get the best download speed for BT, these users can manually open the corresponding listening ports for the BT software in the advanced settings of ICF, or open the "Allow opening of ICS/ICF ports of Windows network **** enjoyment and firewall" of BitComet, and then click "OK" on the dialog box which prompts that the network connection protection settings are about to be changed next time BitComet starts up, so that BitComet can automatically open the ports for the BT software. OK to let BitComet operate automatically. "Universal Plug and Play (UPnP) Network Address Translation (NAT)" indicates that the user is an intranet, accessing the Internet through a gateway or router, and that the NAT supported by the gateway or router supports UPnP (and is turned on, and the current gateway-type software that supports UPnP includes Windows XP's ICS, KERIO's WinRoute Firewall 5 series). This kind of users want BT to get the best download speed, it is best to use BT software that supports UPnP, such as Bit...... >>
Question 8: What does it mean to have an extranet, and an intranet, and what is the difference? An extranet is a network that can be used to access the Internet
An intranet is a network of offices that are accessible to each other and are not connected to an extranet
Question 9: What does it mean to have an intranet and an extranet? Simply put. Their units or families. There are local area networks within the community, units. Outside the home there is a great coverage of the network. This large network extends to our units. Home (through fiber optic. Network cables. Telephone lines, etc.). We connect our LAN to the Internet. Then our access range extends from the LAN to the whole Internet. The LAN is an intranet and the Internet is an extranet.
Similarly. If your organization's LAN is very large. If you have a large LAN in your organization, and the computers in your office form a small LAN that connects to the large LAN in your organization. The same can be said for the large LAN in your organization, which is an extranet. The small LAN in your office is an intranet. At the same time. If the organization's large LAN is connected to the Internet, then it can also be said that the organization's large LAN is an intranet, relative to the Internet.
An intranet can be a separate LAN. Through which the gateway (gateway is the node connecting the two networks. To put it bluntly. It is a computer with dual identity. It has both a LAN IP address. And an Internet IP address. The two IP addresses are bundled on different network cards) proxy access to external networks. This is how Internet cafes, for example, are realized. It is characterized by: Internet cafes in the computer's ip are LAN-specific ip. such as 192.168.xxx.xxx or 10.xxx.xxx.xxx. and this kind of ip in the Internet will not appear above.
(Note: the so-called proxy. That is, you make a request. He came to do things. Similar to the purchase of train tickets. The computers on the LAN want to communicate with the outside. The address of the other party to tell the server. It's a gateway. The gateway uses its own identity to communicate with the other party. It also forwards the messages it receives back to the computers on the LAN. So. The other party can not see the IP of the computers on the LAN, and will only think that the gateway computer is communicating with them. All of the QQs in the Internet café display the same IP.)
The intranet can also be a part of the extranet. For example, a campus network. Or an internal office LAN as opposed to a unit LAN. This is characterized by the fact that the ip of the computers on the intranet is part of the ip range of the entire extranet. The computers on the intranet are connected to the extranet through a gateway (router). The gateway does not need to carry out proxy services. It just routes them.
(Note: the so-called routing. It is the path selection. Routers connect multiple networks. So it must be the gateway to each network. Its role is similar to the post office. You want to contact computers outside the LAN. You send a package to the router. The router will deliver it to the address on the packet. That way. The person who receives the package will know who sent it. But. He can't know if the person who sent the package is a proxy for someone else. Or. The computer receiving the data can know which computer is contacting it. But it can't know if the computer it's contacting is a proxy server on a LAN.)
adsl is special. It works in two ways. The first is that the adsl modem turns on the proxy function. The modem can actually be regarded as a computer. It is a node of the Internet (extranet). At the same time. It is connected to your computer to become a LAN. It is also known as an intranet. The gateway to the intranet is the modem.The second type. The second type is dial-up access through your computer. In this case, the modem is an external device of your computer. Your computer is directly connected to the Internet through a phone line. There is no other network. So there is no such thing as an intranet or an extranet.
Answer 2: What is a WAN (Wide Area Network). Extranet). What is a local area network (LAN. Private network. Intranet)?
Wide Area Network (WAN). It is what we usually call the Internet. It is a network that spans the entire world.
Local Area Network (LAN). As opposed to a wide area network (WAN). Mainly refers to a small area of computer interconnection network. This [small area can be a home. A school. A company. Or a *** department.
BT often refers to a public network. Extranet. Wide Area Network (WAN), often referred to in BT as a private network. Intranet. A local area network (LAN).
Every computer (or other network device) on a WAN has one or more WAN IP addresses (or public. External IP address). A WAN IP address can only be obtained by paying a fee to an ISP. WAN IP addresses cannot be duplicated, and each computer on a local area network (LAN) (or any other ......) can have a different WAN IP address. >>