Others

Create a local area network in the LANIf you live in a dormitory, check if your IP address is 192. 168 .*.*? In general, we simply use a vro or server in the network room to switch the NAT address to the Internet. What if I want to build a small

The changes in TCP/IP status will be impressive to those who have read "TCP/IP details: Volume 1": Figure 1 "TCP status changes. The following describes all the statuses in the figure. These statuses are closely related to TCP three-way handshakes

TCP/IP note 1.TCP/ IP Layer 4 model: Application Layer (Telnet, ftp, snmp, smtp, etc.), transmission layer (TCP/UDP), network layer (IP, ICMP, and IGMP) and link layer (device drivers and network interface cards ). 2. In the TCP/IP protocol family,

About NAT, Network Address Translation is a technology used by routers to convert Intranet addresses to public addresses. There are three main NAT implementation methods: (1) static conversion: static conversion is a one-to-one conversion, and the

The necessary common network test command (ping Command) ping (Packet InterNet Groper group InterNet detector) is a DOS command that can check the connectivity between two hosts, using the uniqueness of the IP address of the machine on the network,

Compare the advantages and disadvantages of circuit switching, packet switching, and group switching. Advantages of circuit switching: both users in a call always occupy end-to-end communication resources. Disadvantages: the transmission efficiency

RIP Protocol troubleshooting 2 05. Why does RIP not support VLSM? How does it work? The example shows that this principle is the same as that of the unsupported discontinuous subnet. As shown in the figure above, replace the IP address on the left

System learning TCP/IP protocol (I) ------ useful policies and pattern protocols are actually a strategy and pattern to solve some problems, there are many policies and modes worth learning in the classic TCP/IP protocol. In summary, there are some

Behind-the-scenes Process of "Ping"Take the following network as an example: There are four sub-machines A, B, C, and D, one route RA, and the subnet mask is 255.255.255.0. The default route is 192.168.0.1.1. Within the same network segmentWhat

The principle of nat penetration has always been mentioned. Many people will be told to use the UDP punch technology, basically, no one will tell you how to use the TCP protocol to penetrate (or even some people will tell you that the TCP protocol

The iptables Operation Command netfilter (iptables) netfilter works in the kernel software to implement fpihiptables of data packets. It is used to control the netfilter packet filtering Firewall (layer-4 TCP/IP. the application layer provides

The Kingdee KIS client and server do not access each other in the same IP segment: The Kingdee KIS server is 192.168.1. * In this CIDR block, I add an IP address range allocated by a wireless router in This CIDR block as 192.168.2. * The Kingdee

Proxy ARP is a variant of ARP. For computers that do not have a default gateway configured to communicate with computers in other networks, the gateway will use its MAC address to respond to the ARP request from the source computer from the IP

Differences between SNAT and dnat snat, DNAT, and MASQUERADE are nat masquerade. SNAT is a special case of SNAT. When a data packet is sent from the network adapter, replace the source address in the data packet with the specified IP address, the

An understanding of snat, dnat, and loop is actually called snat. dnat modifies the source address and destination address of the data packet, and saves the ing relationship before and after the modification, perform restoration operations as needed.

Three handshakes, four waves, and tcp transition. The status transition diagram is not beautiful, but it can explain the problem. Let's take a look, if the image is too small to be visible during browsing, You can enlarge the webpage. I explained

Ethernet frame gap 1. What is IFG? (What) IFG (Interframe Gap), frame spacing, and time disconnection between two adjacent Ethernet frames; the Ethernet transmission mode is one frame and one frame, and the Gap between frames is required, that is,

Lan classification: an Ethernet, ring-based network, FDDI, ATM, or WLAN. To send information, a host must first listen to whether other hosts are sending information on the trunk line, if it is available, it will wait for a random time to listen

Lan features and Topology LAN is a computer network oriented to a small area. It is a computer group interconnected by multiple computers in a certain area. 1. Lan features. (1) The geographical coverage is small. (2) data networks with high speed,

Multicast command SUMMARY STEPS1. enable2. configure terminal3. ip multicast-routing [distributed] // enable multicast route followed by 4 on SW. interface type number5. Either perform Steps 6 and 7 and proceed to Step 9 or perform Step 8 and then