How to block a specific IP Address using UFW The key to blocking a specific IP address with UFW is to make sure that the rule which blocks the ipaddress is applied before any allow rules. Because the firewalls rules are run in order – the block will…

virtual IP address (虚拟 IP 地址)1.是集群的ip地址,一个vip对应多个机器2.与群集关联的唯一 IP 地址 see wiki: A virtual IP address (VIP or VIPA) is an IP address assigned to multiple applications residing on a single server, multiple domain names, or multiple servers, rather than b…

http://www.cyberciti.biz/faq/howto-linux-renew-dhcp-client-ip-address/‘m using Ubuntu Linux. How to force Linux to reacquire a new IP address from the DHCP server? What is the command in Linux equivalent to Windows’ “ipconfig /renew” command? You nee…

sudo gedit /etc/network/interfaces Change the line iface eth0 inet dhcp to iface eth0 inet static and add the following just below it: address 192.168.1.100 (IP address of what you want your Ubuntu machine to be) netmask 255.255.255.0 (Default mask w…

远程连接mysql数据库时可以使用以下指令 mysql -h 192.168.1.104 -u root -p 如果是初次安装mysql,需要将所有/etc/mysql/内的所有配置文件的bind-address=127.0.0.1全都注释掉 [mysqld] # # * Basic Settings # user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = b…

[root@testdb11b ~]# /u01/app/oraInventory/orainstRoot.sh Changing permissions of /u01/app/oraInventory. Adding read,write permissions for group. Removing read,write,execute permissions for world. Changing groupname of /u01/app/oraInventory to oinstal…

By default, an instance in a nondefault VPC is not assigned a public IP address, and is private.You can make an instance in a nondefault VPC public by attaching an Internet gateway to the VPC and providing the instance with a public IP address. In th…

Change Ubuntu Server from DHCP to a Static IP Address If the Ubuntu Server installer has set your server to use DHCP, you will want to change it to a static IP address so that people can actually use it. Changing this setting without a GUI will requi…

Question: On CentOS 7, I want to switch from DHCP to static IP address configuration with one of my network interfaces. What is a proper way to assign a static IP address to a network interface permanently on CentOS or RHEL 7? If you want to set up a…

<Windows Azure Platform 系列文章目录> 本文介绍的是由世纪互联运维的Windows Azure China. 相比于Global Azure (http://www.windowsazure.com),国内由世纪互联运维的Windows Azure在PowerShell仅有细微的差别. Azure Global的IP Rang信息,可以参考:http://www.microsoft.com/en-us/download/details.aspx?id=41653 国内由…

<Windows Azure Platform 系列文章目录> 在之前的文章中,笔者已经详细介绍了如何将Virtual Machine加入Virtual Network,并且绑定固定的Private IP和Virtual IP Address (公网IP地址) Windows Azure Virtual Network (5) 设置Azure Virtual Machine固定Private IP       Windows Azure Virtual Network (6) 设置Azure…

<Windows Azure Platform 系列文章目录> 默认情况下,通过Azure Management Portal创建的Public IP和Private IP都是随机分配的. 用户可以通过Azure PowerShell来设置固定Public IP和Private IP,请参考笔者的文档: Windows Azure Virtual Network (5) 设置Azure Virtual Machine固定Private IP Windows Azure Virtual Netw…

<Windows Azure Platform 系列文章目录> 默认情况下,通过Azure Management Portal创建的Public IP和Private IP都是随机分配的. 用户可以通过Azure PowerShell来设置固定Public IP和Private IP,请参考笔者的文档: Windows Azure Virtual Network (5) 设置Azure Virtual Machine固定Private IP Windows Azure Virtual Netw…

<Windows Azure Platform 系列文章目录> 本文介绍的是国内由世纪互联运维的Azure China 熟悉Azure平台的读者都知道,我们在使用Azure Virtual Machine,会有公用虚拟机IP(VIP)和内部IP(DIP).截图如下: 在Azure平台,关于IP有非常重要的概念 1.VIP (Virtual IP),这个是Azure负载均衡器(SLB)的IP地址.当2台Azure VM部署在同一个Cloud Service下,这2台Azure VM的VIP是相同…

<Windows Azure Platform 系列文章目录> 注意:本文介绍的是Global Azure (http://www.windowsazure.com),如果你使用的是由世纪互联运维的Azure China,请参考下面的连接. Azure China (8) 使用Azure PowerShell创建虚拟机,并设置固定Virtual IP Address和Private IP  本文介绍的是,用户首先使用PowerShell申请公网IP地址,然后在创建Azure VM的时候,绑定公…

<Windows Azure Platform 系列文章目录> 本文介绍的是,当用户在创建Azure Virtual Machine的时候,忘记绑定公网IP,需要重新绑定公网IP的具体操作. 如果读者使用的是国内由世纪互联运维的Azure China服务,请注意参数中 -Location 'East Asia'修改为 -Location 'China East' 或者是'China North' Azure Global的IP Rang信息,可以参考:http://www.microsoft.…

打开Genymotion运行虚拟机提示如下错误: The Genymotion Virtual device could not obtain an IP address.For an unknown reason, VirtualBox DHCP has not assigned an IP address 我的解决办法:…

MySQL的error log 出现大量的 DNS反解析错误. DNS解析是指,将 域名解析成ip地址: DNS反解析是指,将IP地址反解析成域名: Version: MySQL Community Server (GPL) :: [Warning] IP address 'xxx.xxx.xx.xxx' could not be resolved: Name or service not known :: [Warning] IP address :: [Warning] IP address…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. Have you met this question in a real interview? Yes Example Given "25525511135", return [ "255.255.11.135", "255.255.111.35…

IP Address Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 19125   Accepted: 11053 Description Suppose you are reading byte streams from any device, representing IP addresses. Your task is to convert a 32 characters long sequence of '1s'…

/*===================================== IP Address Time Limit:1000MS Memory Limit:30000KB Total Submit:3394 Accepted:1530 Special Judge Description Suppose you are reading byte streams from any device, representing IP addresses. Your task is to conve…

using Windows.Networking.Connectivity; public String GetIPString() { String ipString = String.Empty; var icp = NetworkInformation.GetInternetConnectionProfile(); if (icp != null && icp.NetworkAdapter != null) { var hostname = NetworkInformation.Ge…

阿里云的CentOS 6.5上安装Docker会无法启动,如果直接运行docker -d会看到错误提示:Could not find a free IP address range for interface ‘docker0‘. 原因就是docker自动尝试的建立bridge的ip段正好被阿里云的路由表完全占据了 详细原因可以参见这个帖子:http://hanjianwei.com/2014/07/30/docker-on-aliyun/ 网上有好多类似的解决方法,不过好麻烦,这里主要说下最方…

https://answers.launchpad.net/neutron/+question/242170 这个问题我也遇到了,但是没人回答. floodlight make the VMs can not getDHCP IP address Asked by wherego2000 on 2014-01-14   I used the floodlight as the openflow controller in openstack. in the compute node ,I use…

题目链接:id=2105">http://poj.org/problem?id=2105 ---------------------------------------------------------------------------------------------------------------------------------------------------------- 欢迎光临天资小屋:http://user.qzone.qq.com/593830943/mai…

本文转自:http://www.codeproject.com/Articles/28363/How-to-convert-IP-address-to-country-name   Download source code - 1.11 MB How to retrieve a visitor's IP address Every visitor to your site or web application has an IP address. It is quite handy to be…

在更新到正式平台,看到runtime/app.log 有 Access to debugger is denied due to IP address restriction. The requesting IP address is 的错误,找资料说是 index.php中添加 define('YII_ENV_DEV',false);…

1.Determine if a string is a valid IP address in C Beej's Guide to Network Programming 2.9.14. inet_ntop(), inet_pton() 3.Program to validate an IP address step 1) Parse string with "." as delimiter using "strtok()" function. e.g. ptr…

1.链接地址: http://poj.org/problem?id=2105 http://bailian.openjudge.cn/practice/2105 2.题目: IP Address Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 18146   Accepted: 10456 Description Suppose you are reading byte streams from any device, r…

93. Restore IP Addresses Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example: Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does no…