name (such as Google.com ). In this way, the end user only needs to remember the name, enter it in the browser, and press Enter. Now let's take a look at what happened after you enter a name in the browser and press Enter. First, you need to convert the domain name to the corresponding IP address. To complete this task, you need to send a DNS request to the default gateway (in most cases, the
E cannot be assigned directly to the computer.
Third, network ID, host ID, and subnet mask
The network ID is used to indicate which network the computer belongs to, and the computer with the same network ID does not need to be able to communicate directly through a router connection, and we make a network with the same network ID as a local network (network segment); Communication between computers with different network IDs must be connected through
Classification of IP addresses
The whole internet is a single, abstract network. An IP address is a unique 32-bit identifier that is assigned to every interface on the Internet for every host (or router).
The so-called classified IP
numbers ranging from 1 ~ 99, 1300 ~ 1999,100 ~ 199, 2000 ~ 2699;
The standard IP address access list can be used to filter data packets according to the rule defined by the source IP address of the data packet;
The Extended IP addres
Many articles mention changing your router's address, I think many friends still do not understand it, in fact, to change the application of the router address a wide range: for example, and your network operator address conflict will cause you can not get into the network, the rou
In this experiment, the speed limiting device of a Cisco router is completed by a Cisco2811 router. In this experiment, we will first look at the flash: www.2cto.com yourname # dirDirectory of flash on the router in two ways: /1-rw-25438028 Oct 22 2010 02:25:58 + 02:26:08 c2800nm-ipbase-mz.124-15.T.bin2-rw-1505280 Oct 22 2010 02:26:16 + common.tar 3-rw-931840 Oct
Easyradius Tip: Communication error: (-1) [Description: Unable to resolve router DDNS address, check DDNS status.]The above problems, and Easyradius no direct contact, the main cause of the two possible reasons:Perhaps the 1:easyradius server is a dual-line, using the 8.8.8.8 DNS to resolve IP, and then your DDNS domain name in the resolution of the unstable phen
The first two sections on how wireless routers set up the PPPoE dial-up, dynamic IP Internet. Since the explanation to, of course, can not miss the IP static mode of Internet settings, the general static Internet mode is mainly used in level two routers or proprietary IP network, such as enterprises in the formation of local area network, many times will apply fo
P-link Router Change Logon address setting method
We need to open the Internet Explorer browser in the Address bar input: 192.168.1.1 This IP address, this is only factory factory default address, we can change according to their
automatic access to IP, in the network to show the status of the connection is not a problem, to see if they have specified to obtain the IP address. We turn on Internet Protocol properties to view, set to IP for automatic acquisition, and DNS server for automatic acquisition;
5, look at the network cable
network.
3. Note A of the IP mask. The IP address without A subnet can be written as A mask with the host number 0. For example, if the IP address is 210.73.140.5 and the mask is 255.255.255.0, you can also use the default mask to write only the
The static one-to-one NAT Global Address of the router is also used for PAT and natpat
I. Description
Handle a fault. A host performs one-to-one static NAT on the Cisco router. The host can log on to the device through the NAT address ssh normally, but the host sends syslogs, the obtained
before the static Nat.
B.ezvpn network-extension or Network-plus mode:
----These two ways, because both sides to the exchange of visits, in order to achieve mutual exchange between the two sides, the need for headquarters to configure the internal and external two static NAT, at the same time, in order to be able to static NAT and dynamic pat on the public network, using different NAT configuration method to achieve.
Three. Test topology:
Four. Basic configuration:
A. Headquarters Serv
The IP bandwidth control function in a Broadband Router is very important. Its main function is to rationally allocate bandwidth and make vro configuration more flexible. The use of a Broadband Router saves us bandwidth costs, but because it is a shared environment, under the same line, someone is downloading movies from the Internet at high speed, his neighbors
As we all know, wireless router is applied to users, with wireless coverage of the router, has become a home of the wireless network equipment, but the popularity of wireless networks will also give wireless network security threat, then we can through wireless MAC address filtering function to better protect wireless security, Through the MAC
from one room to another. Similarly, sending information from one network to another must go through a "Gateway", which is the gateway. What is a Gateway, as its name implies, is the "Gateway" connecting a network to another network ". There are also many types of gateways according to different classification standards. The Gateway in TCP/IP protocol is the most commonly used. The "Gateway" mentioned here refer to the gateway under TCP/
tplink Router dynamic IP setting method
1, Login Web admin interface, enter 192.168.1.1 In the Address bar, enter the default username and password (generally admin/admin or
Test router on the back of the nameplate has relevant landing information.
2, enter the wireless route
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