IP address, subnet mask, network number, host number, network address, host address, IP address
IP Address: 4-segment decimal, 32-bit binary, for example, 192.168.1.1 binary is: 11000000 | 10101000 | 00000001 | 00000001The subnet mask shows how many bits are the network number and how many bits are the host number.: 255.255.255.0 binary: 11111111 11111111 1111111
1. Set the host NicDisable VMnet1 for the VM, enable VMnet8 for the VM, set VMnet8 to automatically obtain the IP address, and automatically obtain the DNS server (or use the IP address 192.168.98.1, subnet mask 255.255.0, gateway and DNS server are not required ). Select "Local Connection", right-click "properties", and click "Internet Connection Sharing.
2. Set the guest OS NicSet the "local connection" of the guest operating system in your virtual
Multiplexing (port address Translation,pat)Refers to changing the source port of an out-of-Office packet and port translation, which is Port address translation (PAT, Port addresstranslation). The port multiplexing method is used. All hosts on the internal network can share a legitimate external IP address to enable access to the Internet, thereby maximizing the savings in IP address resources. At the same time, can hide all the hosts inside the network, effectively avoid attacks from the Inter
support information, create a tracker, create mailing-lists, create a forums, source code, documentation, tasks, and each action may has sub-actions, for example, in the "code" action, you can view subversion repository, submit code, view subversion statistics.
Homepage: http://sourceforge.net/or http://sf.net
Google Code:Google Code is well known by Google service users. google Inc. provide its own featured codes, most of which are widely used. it also provides project
Phenomenon:Online settings AllSigned and other methods are invalid. Later consideration may be related to the command line version compatibility, and then found in the registry command line configuration of a ForceV2 set items, holding a try to change the mentality, and indeed resolved!Workaround: Modify the Registry Hkey_current_user\console the value of ForceV2 to 1, restart the computer, and then open the VS-tools-NuGet Package Manager-The package management console is initialized."Original"
Data packet transmission from the host to the host
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SYN is the signal for TCP connection establishment.
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Zabbix Automatic Discovery (Discovery) Feature usage
With the monitoring host increasing, sometimes need to add a number of machines, especially the children's shoes just with Zabbix need to add all the company's servers to Zabbix, if using traditional methods to add devices, groups, projects, images ... the result should be the result of vomiting.
In view of this problem we can make good use of a Discovery (Discovery) module of the Zabbix great God
Lab Environment: How Win7 in a VMware virtual machine in host-only mode can interconnect the host to the parasitic network. Requirements: VMware Workstation12 Pro or above, and a win7 system is installed. ---------------- steps to connect the host to the parasitic Machine network -------------1 open Control Panel in host
Use python to detect the active port of the host and check the active host.
Monitor the active port of the host
#!/usr/bin/env python# coding-utfimport argparseimport socketimport sys#author: wolf_ribbledef scan_ports(host,start_port,end_port): """Scan remote hosts""" try: sock = socket.socket(socket.AF_INET, sock
Apache Configure virtual host three ways, Apache virtual host
One, IP-based
1. Assume that the server has an IP address of 192.168.1.10, use Ifconfig to bind 3 IPs on the same network interface eth0:[Root@localhost root]# ifconfig eth0:1 192.168.1.11
[Root@localhost root]# ifconfig eth0:2 192.168.1.12
[Root@localhost root]# ifconfig eth0:3 192.168.1.13
2. Modify the Hosts file to add three domain names to
In Linux, how does one modify the host name? in Linux, how does one modify the host name?
Step 1:Host name after modificationStep 2:Modify the hostname in/etc/sysconfig/networkStep 3:Modify the/etc/hosts file
Example:
The current host name of my machine is pc. to change it to target_pc:
1: Use the hostname command
2
Google cannot be opened because the Host file is modified with the latest virus. You are prompted to use Baidu for search.
Gseeker message:
In the near future, some users may log on to google.cn/.comand return to China at the prompt: “google. please use a hundred-degree search engine ". This is obviously not normal because Google has not withdrawn from China. The reason why the user will see this jump page is that the system files on the user's comp
with the root account, go to its home directory, create the authorized_keys file, and set the permissions.Cd ~ /. SshCat/tmp/id_rsa.pub> authorized_keysChmod 400 authorized_keysRm-f/tmp/id_rsa.pub
4) testGo to the root account on machine A and try to log on to machine B. Check if the password is not required.Note:The authorized_keys File Permission is very important. If it is set to 777, you still need to provide a password when logging on.Remember to delete id_rsa.pub in the temporary director
1. Description of the problem
In general, there is a limit to the login IP of the database.For Web services and MySQL services on the same machine, the general limit is that only the local computer can access the MySQL service.For web and MySQL service separation, it is generally specified that only the host of the Web service can access the MySQL service. 2. Backup
Suppose 192.168.0.1 is running a Web service, 192.168.0.2 is a MySQL service. Only 1
Ecma262:
Host environment:
Host environment:ProgramFor example, C #'s CLR is executed a lot.Programming LanguageEnvironment, for example, running browsers, operating systems, and other operating environments of the script language, for example, a ghost is often seen in Chinese Ghost movies, the host environment is known as the
ObjectiveWhen attempting to use SOCAT to establish server-side interface forwarding, it is found that the principle of virtual machine access network is not very understanding, and then the Internet to find information to understand how it is, and thus have this summary blog. Socat can establish a full-duplex communication channel between the server ports, which can be used for port data forwarding, which is said to be one of the three Linux/unix system artifacts.Virtual machine Virtual Network
Glossary
Local host: Run secuecrt to manage remote Linux or Unix machines (generally Windows)
Remote Host: the host managed by secuecrt (generally Linux or UNIX)1. Enable SFTP
2. Introduction to SFTP commands
Serial number
Command
Purpose
1
ASCII
Set transmission mode to ASCII
2
Binary
Set the transmission mode to bina
localhost=${host:-"localhost"}The host variable is not set or empty, and the host takes the value after "-"; otherwise host= $hosthost=${host-"localhost"}The host variable is not set, and the
Virtualbox network ip address mutual access + host/host internet access settingsThere are three types of virtualbox network connections.NAT: hosts cannot be accessed when accessing the InternetHost Interface: opposite to the first one, accessing the Host cannot access the InternetIntelnal Network: build a virtual Network using all the virtual machines on the host
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