protocol number

1. What is a socket?Socket Chinese translation: socket, but we generally agree to commonly known as the use of: socket. I want to explain what the socket is for before explaining what it is for: the socket is to establish the basis of '

in the embedded development, we often use a variety of Linux commands, today and everyone to share is the basic Linux Network command, which is inadvertently seen on the internet in a well-organized article, to share to everyone, I hope to help

For raw sockets, only root privileges can be created.There are three main functions of raw sockets:1. The raw socket is used to receive the ICMP,IGMP protocol package sent to the native, or to send the protocol packets.2. Receive IP packets that are

New ui-three ways to set a hyperlink jump for TextView--Reprint Please indicate source: Coder-pig, welcome reprint, do not use for commercial use!Piglet Android Development Exchange Group has been established, welcome everyone to join, both novice,

In the Ebtables parameter:-P: Specify the type of protocol used, IPV4,ARP, etc. optional (required when using) for details see /etc/ethertypes--IP-PROTO:IP packet type, 1 ICMP packet, 6 TCP packet, 17 UDP packet, detailed description under

Configure shared DCCA physical interface in shared DCC can belong to more than one dialer bundle (dial bundle), serving multiple dialer interfaces but one dialer interface only corresponds to one destination address, and only one dialer bundle is

One, multicast address and protocol numberMulticast address: 224.0.0.5 (all OSPF router) and 224.0.0.6 (all DR router)Protocol number: IP Protocol No. 89thIi. Types of LSA Router LSA: Each router sends a Class 1 LSA that contains the

*******************************Class Animal (object):def __init__ (self):Self.is_handsome=trueDef eat (self):If Self.is_handsome:Print "Eat ..."ElsePrint "No Handsome" Class Dog (animal):def __init__ (self):#animal. __init__ (self)Super (Dog,self).

VRRP is another type of Gateway redundancy protocol and is a public mechanism, HSRP is a C Isco Private mechanism : VRRP (virtual Router     Redundancy Protocol, virtualized routing Redundancy Protocol), A number of Gateway routers virtual

13 Types of Sockets:1. Streaming Sockets (Socket_stream)Provides reliable, connection-oriented data transfer services. Data is treated as a byte stream with no length limit. For example, the FTP protocol uses this.2. Datagram-type sockets

Session 1 ARP Proxy technology1. ARP ProxyThe ARP proxy feature is the L3 layer gateway device for all functions, routers or L3 layer switches. The ARP proxy function uses the ARP protocol's unreliability to replace the terminal to carry on the L3

OverviewBoth TCP and UDP use the same network-layer IP, but unlike UDP, TCP is a connection-oriented, reliable byte-stream protocol. Therefore, both parties must establish a TCP connection before transmitting the data. TCP realizes the transmission

The complete C/s architecture is based on rtp/rtcp H. 264 video transmission scheme. In this scenario, the functional module design is performed on the server side and the client respectively. Server-side: RTP Encapsulation module is mainly for H. 26

I. Linux USB driver levels 1. devices, configurations, interfaces, and endpointsThe logical organization of a USB device consists of four layers: device, configuration, interface, and endpoint. A device usually has one or more configurations:

Linux Network firewall     NetFilter: is a frame of the kernel: framework     IPTABLES: Data packet filtering: Nat mangle and other rule generation tools   Network knowledge: IP packet header &NB Sp TCP headers       HDR Len   Header First

1. High-speed discovery of feasible network hostsNMAP-SP 192.168.1.* eitherNMAP-SP 192.168.1.-2542, Scanning UdpportThe DP scan method is used to infer the condition of the udpport.Send a probe to the target host's udpport, assuming that the port is

Internet Control Message Protocol ICMP is an important protocol in the network layer. The ICMP protocol is used to transmit various error and control information between network devices, which is very important for collecting various network

I. Basic OVERVIEW:1.EIGRP is a Cisco private-----supports large networks2. The king of convergence, very fast3. Enhanced Internal Network routing protocol, is a hybrid routing protocol4. Reliable updates, triggered updates, incremental updates,

/proc is a pseudo-file system that is used as an interface for kernel data structures, not just to explain that most of the files in/dev/kmem./proc are read-only, but you can also change kernel variables by writing some files.The following is a

PHP Network operation function Summary, PHP function summary checkdnsrr-DNS traffic checks for the specified host (domain name) or IP addresscloselog-Turn off System log linksdefine_syslog_variables-Initialize all syslog-related