I don't need to analyze it professionally. I use dummies to answer questions.
This is a simulated question. Use this question as an example.
URL type: Of course, it is Class B.
Convert the IP address and subnet mask to binary, and then perform operations on them.
145.189.24.3 10010001 10111101 00011000 00000011
201710000224.0 11111111 11111111 11100000 00000000
Network Address: Calculate the
The example of this article describes the approach of PHP for IP address mask operation. Share to everyone for your reference, specific as follows:
IP Resolution:
function Ip_parse ($ip _str) {
$mark _len =;
if (Strpos ($ip _str, "/") > 0) {
list ($
IPY module originally used to enter the correct network bit and mask, I use the mechanism of processing error to achieve the input of any IP address and mask can correctly output the results of small programs.1 #!/usr/bin/env python2 #-*-coding:utf-8-*-3 #@Date: 2017-09-04 21:57:154 #@Author: Enderzhou ([email protected])5 #@Link: http://www.cnblogs.com/enderzhou
An error occurred while adding new nodes to Oracle11gR2RAC -- IP subnet mask system environment: Operating System: RedHatEL5Cluster: OracleGI (GridInfrastructure) Oracle: Oracle11.2.0.1.0: RAC System
An error occurred while adding new nodes to Oracle11gR2RAC -- IP subnet mask system environment: Operating System: RedHa
To convert a subnet mask to an IP address range, you often need to convert the subnet mask to an IP address range for further computation. the conversion principle and Code are as follows: www.2cto.com is used to divide an IP address into a 'subnet number' and a 'host addres
QT5 obtains the local IP address, computer name, network connection name, MAC address, subnet mask, and broadcast address.Get Host Name
/** Name: get_localmachine_name * function: get the name of the Local Machine * parameter: no * returned: QString */QString CafesClient: get_localmachine_name () {QString machineName = QHostInfo :: localHostName (); return machineName ;}Get local
Not much to say, directly on the code.Package Com.ckw.test;import Java.io.BufferedReader; Import java.io.IOException; Import Java.io.inputstreamreader;import Java.util.*;import Java.util.map.entry;public class TestOfSubNetMask {Map The result is:---------------------------------------------------------------Windows IP Configuration host name ............. : DADI primary DNS suffix ........... : node type ............: hybrid
Linux (1): linux change IP address command _ change DNS _ change default gateway _ change subnet mask _ host name, linuxdns
How to use commands to change the linux IP address, DNS, and subnet mask, and add a Linux virtual machine to the Virtual Machine (vitrualBox;
Installation: http://pan.baidu.com/s/1sjJPhP7
After i
How to use commands to change the IP, DNS, subnet mask of Linux, and add a Linux virtual machine on the virtual machine (Vitrualbox);Installation method: Http://pan.baidu.com/s/1sjJPhP7After installation, go to the Linux desktop, a desktop like this:Press CTRL+ALT+F2 to enter the command line window, then log in and enter it after the login is successful:VI /ETC/SYSCONFIG/NETWORK-SCRIPTS/IFCFG-ETHXOpens th
Q: Our school machine room began to build a campus network, the router is selected CISCO 2514, In the settings, the problem is that on CISCO 2514 if there is no "IP SUBNET-ZERO ", if the ethernet interface mask is used, it cannot be set up. IP address and subnet mask are allocated by mains. It should be correct. I thin
I open "edit"-"Virtual network Editor" menu to modify network settingsHint Subnet mask error as shownOnline query, use the following methods to solve the problemThis virtual network editor is for you to add a network card, you add Vmnet1 is in your real computer added a virtual network card, this address is the network card in the "network segment", Remember, is the network segment! Instead of the IP addres
need61.236.250.0/24#
# Cat ipcalc. Sh // view the following conversion script
#!/bin/bash#############by kumu#############while (( $# > 0 ))do while read line do /usr/local/src/ipcalc-0.41/ipcalc $line | grep -v dea done
#./Ipcalc. Sh cnc_ipcalc chinanet_ipcalc crtc_ipcalc# Ls *. txtChinanet_ipcalc.txt cnc_ipcalc.txt crtc_ipcalc.txt# Tail-5 cnc_ipcalc.txt210.22.0.0/16210.21.0.0/16218.106.240.0/20210.13.64.0/18220.250.32.0/19#This completes all the conversions. Domestic
This example describes a Python implementation method that calculates a network segment based on an IP address and subnet mask. Share to everyone for your reference. Specific as follows:
This code is tested in the Linux environment 2.6.6python version!
#!/usr/bin/env python#_*_encoding:utf-8_*_#input your IP address and netmask to figure out your network. #申明:
IP address segment: 210.143.144.1 ~ 210.143.159.254,
210.143. (1001) 0000.00000000 indicates the network address and identifies a network,
210.143. (1001) 1111.11111111 is the broadcast address, which can broadcast messages to all addresses in the network.
This CIDR block is equivalent to 210.143.144.0/20, that is, 210.143. (1001) 0000.00000000, and 20 indicates the subnet mask,
The subnet
In the Aliyun background of cloud shield monitoring---"threat---" attack, will find a large number of malicious attacks every day, there are a large number of GET requests, resulting in server resources waste useless consumption.
Type of attack in the last 7 days
Carefully look at the source of the attack information, found that more than 99% of the attack IP address, there are historical attack records, the following figure:
At
... noConfigure:error:Package requirements (Xtables >= 1.4.5) were not met:No package ' xtables ' foundConsider adjusting the PKG_CONFIG_PATH environment variable if youInstalled software in a non-standard prefix.Alternatively, you may set the environment variables Libxtables_cflagsand libxtables_libs to avoid the need to call Pkg-config.The Pkg-config man page is for more details.Please install Iptables Development Kit Iptables-devel:# yum-y Install Iptables-devel
The fourth step, download an
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.