ip

Bash script to calculate summarize IP address ranges

由 大城市里の小女人 提交于 2020-01-12 10:50:08
问题 I need to write a bash script that when I enter two ip addresses, it will calculate summarize address for them. Examlpe: 192.168.1.27/25 192.168.1.129/25 Result will be: 192.168.1.0/24 Can you help me with this script? I know you will say to me “What did you try?” I tried to find something in Google, but what I found that I must to convert to binary then calculate it, and it will be very hard. I even don’t know how to start with it. Any idea or hint please? 回答1: Calculation of common netmask

Human readable DhcpInfo.ipAddress?

由 荒凉一梦 提交于 2020-01-12 07:37:06
问题 I am wondering how to get a human readable IP Adress from DhcpInfo.ipAddress? The tricky thing about it is, that it is an integer and obviously you can't store an IP address in an integer. So, how is the IP address encoded, that it can be stored in an int? The documentation doesn't give any help to this problem: http://developer.android.com/reference/android/net/DhcpInfo.html#ipAddress Thanks :-) 回答1: You can actually. IP address as int is: AABBCCDD and in human-readable form it is AA.BB.CC

Reverse DNS lookup in perl

由 时光总嘲笑我的痴心妄想 提交于 2020-01-12 06:59:26
问题 How do I perform a reverse DNS lookup, that is how do I resolve an IP address to its DNS hostname in Perl? 回答1: gethostbyaddr and similar calls. See http://perldoc.perl.org/functions/gethostbyaddr.html 回答2: If you need more detailed DNS info use the Net::DNS module, here is an example: use Net::DNS; my $res = Net::DNS::Resolver->new; # create the reverse lookup DNS name (note that the octets in the IP address need to be reversed). my $IP = "209.85.173.103"; my $target_IP = join('.', reverse

Reverse DNS lookup in perl

由 心不动则不痛 提交于 2020-01-12 06:59:06
问题 How do I perform a reverse DNS lookup, that is how do I resolve an IP address to its DNS hostname in Perl? 回答1: gethostbyaddr and similar calls. See http://perldoc.perl.org/functions/gethostbyaddr.html 回答2: If you need more detailed DNS info use the Net::DNS module, here is an example: use Net::DNS; my $res = Net::DNS::Resolver->new; # create the reverse lookup DNS name (note that the octets in the IP address need to be reversed). my $IP = "209.85.173.103"; my $target_IP = join('.', reverse

Get local IP address of ethernet interface in C#

由 纵然是瞬间 提交于 2020-01-11 14:44:30
问题 Is there a reliable way to get the IPv4 address of the first local Ethernet interface in C#? foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces()) { if (nic.NetworkInterfaceType == NetworkInterfaceType.Ethernet) {... This finds the local IP address associated with the Ethernet adapter but also find the Npcap Loopback Adapter (installed for use with Wireshark). Similarly, there seems to be no way to tell the difference between the loopback address and the Ethernet

How to get IP address of device in Unity 2018+?

由 谁说我不能喝 提交于 2020-01-11 07:44:06
问题 How to get IP address on C# in program which developing for android device in Unity 2018.2+? Seems like Network.player.ipAddress is deprecated right now, so I'm looking for a new way. 回答1: The Network.player.ipAddress has been deprecated since it is based on the old obsolete Unity networking system. If you are using Unity's new uNet Network System, you can use NetworkManager.networkAddress; string IP = NetworkManager.singleton.networkAddress; If you are using raw networking protocol and APIs

How to check if a given ip falls between a given ip range using node js

由 血红的双手。 提交于 2020-01-11 06:35:08
问题 Please pardon for this trival question Given a set of Ip the set is quite large and might increase https://github.com/client9/ipcat/blob/master/datacenters.csv#L4 Small example set - first column start ip second - end ip range I will get the user ip from the request . I need to check if the ip falls in these set of ranges . How do i accomplish this. I have looked into ip_range_check and range_check. But they donot check for a ip given given range . How is thhis possible in node js with utmost

使用IP策略阻止指定端口的访问3389

由 时光怂恿深爱的人放手 提交于 2020-01-09 20:17:48
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 步骤如下： 一：创建安全策略 1） 打开组策略管理界面：开始 -> 管理工具 -> 本地安全策略 2） 右键“IP安全策略，在本地计算机”，选择 ” 创建 IP 安全策略“，单击下一步，输入名称： ”3389 Filter”, 点击下一步，把对勾去掉（激活默认相应规则），单击下一步，把对勾去掉（编辑属性），单击完成 二：创建 IP 筛选表 1) 右键“IP安全策略，在本地计算机”，选择“管理 IP 筛选器和筛选器操作 （ M ）“，点击”添加“，输入名称” 3389 筛选器 allow “，此处需要注意，我们一定要先把自己的 IP 加入可以访问的列表之后才可以进行禁止的操作，以防把自己关到服务器外边 .., 将”使用添加向导“勾去掉，单击”添加“，在”源地址“中选择一个特定的 IP 地址，此处输入我们的外网地址：192.168.0.110。”目标地址“，我们选择”我的 IP 地址“，切换到”协议 ” 选项卡，选择协议类型“ TCP ” , 设置 IP 协议部分选择为：从任意端口，到此端口，端口输入“ 3389 ”，点击确定。 2) 重复 1 ）添加筛选器“ 3389 筛选器 deny ” 三：新增管理器筛选操作 1） 右键“IP安全策略，在本地计算机”，选择“管理 IP 筛选器和筛选器操作 （ M ）“，

客户端的IP地址伪造、CDN、反向代理、获取的那些事儿

由 霸气de小男生 提交于 2020-01-08 10:21:06
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 20120917 @郑昀 汇总 外界流传的JAVA/PHP服务器端获取客户端IP都是这么取的： 伪代码： 1）ip = request.getHeader(" X-FORWARDED-FOR ") 可伪造，参考附录A 2）如果该值为空或数组长度为0或等于 " unknown " ，那么： ip = request.getHeader(" Proxy-Client-IP ") 3）如果该值 为空 或数组长度为0 或等于 " unknown " ，那么： ip = request.getHeader(" WL-Proxy-Client-IP ") 4）如果该值 为空 或数组长度为0 或等于 " unknown " ，那么： ip = request.getHeader(" HTTP_CLIENT_IP ") 可伪造 5）如果该值为空 或数组长度为0 或等于"unknown " ，那么： ip = request. getRemoteAddr () 可对于匿名代理服务器，可隐匿原始ip，参考附录B 之所以搞这么麻烦，是因为存在很多种网络结构，如 Nginx+Resin、Apache+WebLogic、Squid+Nginx。下面挨个儿讲一下。 郑昀 :△ 首先，明确一下，Nginx 配置一般如下所示：

Restricting access to a website by IP address range / domain

由 懵懂的女人 提交于 2020-01-06 07:20:31
问题 I would like advice on the best way to restrict access to a weba pplication (using .net 2.0 and II6) based on the clients IP address. The two ways I am considering: 1) Through the server side code - check the client I.P against a list of IP addresses within the web.config. 2) Through IIS by creating a virtual directory and restricting the I.P addresses on this virtual directory. My question is if I go the virtual directory route there are a lot of users that access this website and I have
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