dns

how can I parse a UDP packet in .NET?

由 我怕爱的太早我们不能终老 提交于 2020-01-02 17:18:48
问题 how can I parse a UDP packet in .NET? I'm using PCap.Net to capture packets, in this case UDP packets, which I can access from the PCap.net object via (PcapDotNet.packets.Ethernet.IpV4.Udp). How can I take the results, the Udp packet, and parse this? In particular to unbundle DNS requests and responses that occur that are housed within a UDP packet. Is there a library that could help here? EDIT : To be more specific what I want to be able to do is extract the IP address from the DNS response,

CakePHP multisite (like WPMU + domain mapping)… possible?

由 前提是你 提交于 2020-01-02 17:15:25
问题 So I'm just starting to play with CakePHP and was wondering if the following was possible: A single install of Cake, with a super admin login. Then, admins that have access to specified "sub sites", and the ability to create/edit content and users on those sub sites. Finally, the ability to map domain names (not subdomains, but unique domains) to the routes; so instead of mysite.com/subsite/posts/1 it would just be newdomain.com/posts/1 Essentially, I'm looking to replicate the experience of

DNS学习

由 时间秒杀一切 提交于 2020-01-02 16:15:30
一、DNS简介 DNS是域名系统（Domain Name System）的英文缩写。域名解析是把域名指向网站空间IP,让人们可以通过访问域名来访问网站的一种服务。IP地址是网络上标识站点的数字地址，为了方便记忆，采用域名来代替IP地址标识站点地址。 域名解析就是从域名到IP地址的转换过程。 正向解析：域名----------》IP地址 反向解析：IP地址-----------》域名 二、域名的组成和分类 2.1、格式 格式常见格式：www.baidu.com 完整格式：www.baidu.com. . :根域，可省略不写 2.2、域名各组成部分解释 com：顶级域，由ICANN组织指定和管理 分类： 国家区域域名：cn（中国）、hk（香港）、sg（新加坡） 通用顶级域名：com（商业机构）、org（非营利组织）edu（教育机构）等 新通用顶级域名：red（红色、热情）、top（顶级，高端）等 baidu：二级域，可由个人或组织申请注册 www:三级域（子域），服务器网站名代表 2.3、客户端访问站点过程 例如：客户端访问www.kernel.org （1）客户端首先查看本地hosts文件，如果有则返回，否则进行下一步 （2）客户端查看本地缓存、是否存在本条目的缓存，如果有则直接返回。没有则进行下一步 （3）将请求转发给DNS服务器 （4）查看域名是否为本地解析，是则本地解析返回

Qt4 DNS Proxy QUdpSocket

由 扶醉桌前 提交于 2020-01-02 15:02:35
问题 I'm essentially trying to make a DNS proxy application using Qt4. If I set my DNS nameserver to 'localhost' then I want to forward all DNS requests to the server specified in the remoteSocket object. Everything seems to be working fine except sending the data from the remoteSocket object back to the localSocket object which is requesting the DNS lookup. When writing to localSocket, is there anything specific I need to know about that? The problem seems to be in readResponse(). #include "dns.h

arsoft.tools.net(DNS Server) Redirect traffic from one URL to another (DNS forwarding)

由 心已入冬 提交于 2020-01-02 06:49:11
问题 Following the documentation of arsoft.tools.net on https://docs.ar-soft.de/arsoft.tools.net/, we just developed a dns server to intercept every request from the network, everything is working fine! The thing that is slowing us down is: When the client types www.google.com (for example), we want to show or redirect to www.yahoo.com(or an IP address), any clue of how can we achieve that? There is some people looking for the same solution here: https://arsofttoolsnet.codeplex.com/discussions

Full URLs in Rails logs

由 心已入冬 提交于 2020-01-02 05:41:19
问题 Is it possible to get the full URLs in the logs of a Rails application? Currently I'm getting something like: Started GET "/" for 127.0.0.1 at 2011-08-27 13:13:10 +0200 but I need to get: Started GET "http://localhost:3000/" for 127.0.0.1 at 2011-08-27 13:13:10 +0200 because this is an app where the domains are important. 回答1: As of Rails 3.2.12, instead of monkey-patching before_dispatch or call_app, there is now a method that receives the request and returns the Started GET "/session/new"

Horizontal scaling: routing user-generated subdomains between servers

由 左心房为你撑大大i 提交于 2020-01-02 04:11:06
问题 I maintain a web application that is outgrowing a single VPS. The architecture consists of a large number of small users, each with their own subdomain. Users do not interact. Load means i have to move some users, and all new users, to another installation of the web application on a separate server. Currently, every user subdomain falls to the same virtualhost, where a single PHP front controller displays the appropriate content based on the hostname. A single wildcard DNS record for *

How to set dynamic subdomain cross server or in DNS setting

由 北城余情 提交于 2020-01-01 19:24:19
问题 I have www.did5.com point to google appengine server I want to have anyname.did5.com point to www.did5.com/anyname And the url in address bar still anyname.did5.com I can't find the way to do by using dns setting (host records) Can anyone do ? Please help.. 回答1: Have the same wish, but had to do HTTP 301 redirect from my domain hosting to an appengine site. It works normally, but it's required to have a working hosting, but not only domain parking. So please try to edit ".htaccess" file,

Create custom DNS name server in C

由 人走茶凉 提交于 2020-01-01 16:49:49
问题 Need to create a custom DNS name server using C which will check against a mysql db to see if the client IP need to be directed to a different server. Using this for a test network so requests to foo.com will only go there if true lookup is enabled, otherwise requests will be directed to a development env. Any suggestions/recommendations? Currently looking at libevent with something like ldns or c-ares 回答1: BIND already has a mySQL extension (using dynamic loadable zones). All you need to do

IP address is shown in address bar instead of domain

由 亡梦爱人 提交于 2020-01-01 12:12:56
问题 I have a WAMP home web server up and running on a static IP and registered a domain with Namecheap, but I'm a bit shaky with DNS. At first I used URL Redirect and pointed it to my IP. This meant that when you typed in the domain (like example.com) it just redirected you right to my IP, replacing the domain name with it in the address bar. Now I'm trying to get the domain to show instead of the IP in the address bar, which I'm struggling to understand exactly how to do. The latest thing I've
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