traceroute

How does TCP perform the three-way handshake?   The sender sends a SYN = 1, ACK = 0 packet to the receiver and connects the request. This is the first handshake. If the receiver receives the request and allows the connection, a syn = 1,   ACK = 1

1. ifconfigYou can use the ifconfig command to configure and view the network interface configuration. For example: (1) configure the IP address of eth0 and activate the device. # Ifconfig eth0 192.168.1.10 netmask 255.255.255.0 up (2) configure the

TCP: syn ack fin rst psh urg details ========================================================== ================================== TCP three-way handshakeHow is it done: the sender sends a SYN = 1, ACK = 0 packet to the receiver, and the request is

1. Telnet command (1) smooth ports [Root @ portal_a/] # telnet 10.4.200.114 8500 Trying 10.4.200.114... Connected to 10.4.200.114 (10.4.200.114 ). Escape Character is '^]'. (2) Port failure [Root @ portal_a/] # telnet 10.4.200.114 9028 Trying 10.4.20

To improve network management efficiency, it is necessary for us to generate a convenient and intuitive network topology map for our local area network in a timely manner. This network topology map is cleverly used, we can quickly find the source of

TCP three-way handshakeHow is it done: the sender sends a SYN = 1, ACK = 0 packet to the receiver, and the request is connected. This is the first handshake. If the receiver receives the request and allows the connection, A packet with SYN = 1, ACK =

Overview Although the Protocol family is called "TCP/IP", there are many other members in addition to the two main protocols, TCP and IP. Figure 2-1 shows an overview of these protocols. Figure 2-1 shows both IPv4 and IPv6. From the right to the

ICMP: Internet Control Message Protocol. The network layer of the Internet consists of the IP protocol, the routing protocol (RIP, OSPF, BGP), and ICMP. ICMP is used to exchange messages between the host and the route. The most typical is used to

Linux: CentOS7 Nic settings (P1), centos7p1 You can set the NIC in Linux in several ways. Method 1: Enter setup Method 2: modify the configuration file   We recommend that you modify the configuration file for network configuration. The

1: man online query man ls2: ls viewing directories and archives ls-la3: ln creates the link file ln-fs/usr/local/apache/etc/httpd. conf/etc/httpd. conf4: The more file name is displayed on the page.5: cd/usr/local/apache switch directory6: Create a

Linux network settings (version 2) and linux Version 2Linux network settings-network configuration file and command network configuration file 1./etc/sysconfig/network-scripts/ifcfg-eth0 # [Save the IP address and gateway] [Set static IP

Basic Linux Network Configuration 1. TCP/IP network configuration file /Etc/sysconfig/network-scripts/ifcfg-eth0 /Etc/sysconfig/network /Etc/host. conf /Etc/hosts /Etc/resolv. conf /Etc/services (1)/etc/sysconfig/network-scripts/ifcfg-eth0 Network

Nmap help documentWhat is nmap? Nmap (Network ER) is an open-source Network detection and security audit tool. Its design goal is to quickly scan a large network. Of course, it is no problem to scan a single host with it. We recommend that you use

Windows Server 2003 system configuration Scheme Network security means that the hardware, software, and data in the network system are protected from accidental or malicious damages, changes, and leaks, and the system runs continuously, reliably,

Use proxy smart line selection for obfuscation of ssh (obfuscated), sshobfuscated I don't know what's wrong. Some Website access is always unstable, and the speed is not satisfactory (You know, huh, you know). There is always a furious attack and

  1. sudo !! CommandIf you run the command without a specific sudo command, an error is returned. Then, you don't need to rewrite the entire command, just enter '!! 'To capture the final command.The Code is as follows: $ Apt-get update   E: cocould

40 useful Mac OS X Shell scripts and terminal commands There are a bunch of terminal commands under Mac OS x. I have classified these commands in a simple way. Many commands here are equally effective in other systems (Windows and Linux, especially

Basic Linux Network Configuration 1. TCP/IP network configuration file /Etc/sysconfig/network-scripts/ifcfg-eth0 /Etc/sysconfig/network /Etc/host. conf /Etc/hosts /Etc/resolv. conf /Etc/services (1)/etc/sysconfig/network-scripts/ifcfg-eth0 Network

The following are the 28 command-line tools collected by Krist ófská cs under 28 Unix/Linux systems. Some of them are familiar with and some are very useful, some are unknown. These tools are very good and I hope everyone will know. This article is

TTL TTL is a value in the IP protocol package. It tells the network whether the packet is discarded because the time in the network is too long. There are many reasons that the package cannot be delivered to the destination within a certain period