ipv4

In the properties section of my network card, on windows server 2008, i have IPV6 disabled, leaving only IPV4 enabled. However in ASP.NET, Request.UserHostAddress returns '::1', an IPV6 address. Has anyone got any idea how to revert back to IPV4? If you're connecting to localhost (::1 / 127.0.0.1), you're not using the network card that your server has, but rather like a virtual card that windows has. I don't think there is anyway to configure the loopback card and removing IPv6 from it, not without removing support from the whole system, but in Win2008 you probably can't do that anymore. You

I use my computer to communicate with a piece of hardware via ethernet. To communicate with this device I set my ip to 192 168 0 11, subnet mask to 255 255 255 0, and default gateway to 192 168 0 1 for IPv4. To use the internet, I choose "Obtain an IP address automatically" via control panel. I'd like to have a script that allows my to quickly choose one or the other ethernet setting - hardware or internet. I program mostly in python but maybe there is a batch file solution. Thanks, Barry. You can use the Python WMI module to do this (install the PyWin32 extensions and the WMI module before

As we all know the IPv4 address for localhost is 127.0.0.1 (loopback address). What is the IPv6 address for localhost and for 0.0.0.0 as I need to block some ad hosts. As we all now that IPv4 address for localhost is 127.0.0.1 (loopback address). Actually, any IPv4 address in 127.0.0.0/8 is a loopback address. In IPv6, the direct analog of the loopback range is ::1/128 . So ::1 is the one and only IPv6 loopback address. And while the hostname localhost will normally resolve to 127.0.0.1 or ::1 , I have seen cases where someone has bound it to an IP address that is not a loopback address. This

IPv4地址 不论什么网络设备能够经过一个网络接口卡(NIC)接入网，假定该设备要能够访问的其它设备，然后该卡必须有一个唯一的地址。候接入多个网络，相应地该设备就有多个地址。假设这个设备是主机的话。一般被称为multihomed主机。 路由器一般有多个网卡并接入多个网络，所以路由器也有多个地址，可是一般不把路由器称为multihomed主机。 IPv4使用一个32位二进制地址，所以理论上可供使用的IPv4地址一共由4 294 967 296个，即 2 32 。为了便于管理和寻址（路由），一个IPv4地址的32位被划分为两部分：网络ID和主机ID。 从左边開始的、连续的若干个二进制位作为网络ID，用于标识设备所在的网络；剩余的二进制位作为主机ID，用于标识在网络中的设备。 眼下有三种划分方法：分类法、子网化和CIDR。 分类法 基本划分 分类法是最早的、也是最简单的一种划分方法。它把IPv4地址固定地分为五类：A、B、C、D和E。 A类把前8位划分为网络ID。但第1位必须是0； B类把前16位划分为网络ID，但前2位必须是10； C类把前24位划分为网络ID。但前3位必须是110。 D类用于组播，但前4为必须是1110； E类作为预留地址，可是前4位必须是1111。 分类法的五类地址取值范围： 类 取指范围 A 0 .0.0.0~ 127 .255.255.255 B 128.0

近日，阿里云数据中心骨干网IPv6 DDoS网络安全防御被工业和信息化部认定为“网络安全技术应用试点示范项目”，本次评选由工业和信息部网络安全管理局发起，从实用性、创新性、先进性、可推广性等维度展开，阿里云成为唯一一家入选IPv6 DDoS防护类项目的云服务商。 响应国家号召，率先布局IPv6 2019年，工信部签发《工业和信息化部关于开展2019年IPv6网络就绪专项行动的通知》，从网络基础设置、应用基础设施、终端设施设备，到网站和应用生态，提出了明确的指标化任务，并对网络的服务性能和安全性明确了目标要求。从软件服务商到终端设备制造商，所有业务都要过渡到IPv6，显然，普及IPv6已成为国家战略。 2018年，阿里云就已建成国内首家IPv6 DDoS云防御系统，支持秒级监控防御海量IP，并在护航全球最大在线购物狂欢节双十一过程中进行了大规模实战。期间，IPv4和IPv6双栈防御系统为云上客户和阿里电商业务拦截5000多次DDoS攻击，成功保障双十一的顺利进行，验证了阿里云DDoS高防IP优秀的防御效果、成熟性和稳定性。 阿里云IPv6 DDoS高防IP发展节点 在越来越多的企业过渡到IPv6协议的同时，安全问题也开始凸显。2018年初，IPv6 DDoS攻击已经开始在互联网出现。而很多服务提供者还没有做好将安全防护升级到IPv6的准备。2019年，应对好IPv6浪潮带来的安全挑战

This question already has an answer here: Datatype for storing ip address in SQL Server 10 answers What should be the most recommended datatype for storing an IPv4 address in SQL server? Or maybe someone has already created a user SQL data-type (.Net assembly) for it? I don't need sorting. David M Storing an IPv4 address as a binary (4) is truest to what it represents, and allows for easy subnet mask-style querying. However, it requires conversion in and out if you are actually after a text representation. In that case, you may prefer a string format. A little-used SQL Server function that

创建容器的时候报错WARNING: IPv4 forwarding is disabled. Networking will not work. # docker run -it -p 8080:8080 tomcat WARNING: IPv4 forwarding is disabled. Networking will not work. 解决办法： vim /usr/lib/sysctl.d/00-system.conf 添加如下代码： net.ipv4.ip_forward=1 重启network服务 systemctl restart network 完成以后，删除错误的容器，再次创建新容器，就不再报错了。 来源： https://www.cnblogs.com/zhangmingcheng/p/11355972.html

Is it possible to set the IP address of an interface in Android within an application? I can query the available interfaces and their current addresses using java.net.NetworkInterface , but this doesn't provide a facility to change these. Did I just miss something somewhere, or is it not allowed? I was hoping to be able to make my application either change or add an alias to one or more of the existing interfaces at runtime on an "off the shelf" device. (2.1/2.2). Ideally I'd like to do this for both IPv4 and IPv6 addresses. Settings.System includes several flags you can use for this: WIFI_USE