dns

2 DNS servers on 2 adapters - How can I determine order or preference?

When VPN is enabled 2 adapters have a DNS server, the VPN and the normal NIC. Most apps use the VPN adapters DSN (nslookup, browsers, etc., verified with packet capture). But one flash app/site uses the NIC DNS server, which is not what I want to happen. Any suggestions on what I can do to troubleshoot this? How can I dig into the logi...

Multithread DNS Query against specific DNS, domain and recordtype supporting Library

Resolved, used adns with python bindings... I have a scenario in which i have to do the following: Load a domain Load what record type is to be queried Load list of DNS Perform query, fetch results and display them. I have tried this but its not multi threaded and even a single query takes about 3 seconds. I looked at ADNS, its pyth...

Python and ADNS, falling in infinite loop somewhere

I have written some code that queries adns. Problem with this code is that it gets stuck, how? Let me explain it: Say my dnslist is ["8.8.4.4", "8.8.8.8", "208.67.220.220", "208.67.222.222", "192.168.50.1"] It would pop a dns from the list and query againt it, now that means that DNS will be queried in reverse order No matter what i d...

External DNS lookup web service (NSLOOKUP / DiG)

Several sites offer hostname to IP conversions, or in their wording: Query a DNS domain nameserver to lookup and find IP address information of computers in the internet. Convert a host or domain name into an IP address. However, I haven't been able to find any free webservices offering this functionality. I've stumbled upo...

Creating an error page for a subdomain that doesn't exist.

I've got a number of subdomains on one of my sites. When someone goes to a subdomain that doesn't exist, I want to redirect to a 404 page on my main domain. noexist.example.com --> example.com/404.php?subdomain=noexist (or without the query string if HTTP_REFERRER can give me that info) I'm running LAMP on a VPS with cPanel installed...

does each subdomain on a Windows Server 2003 webserver need a dedicated IP address?

We have a remote webserver with two IP addresses. Can we put several web applications on this server organized like this? I am putting xttp instead of http because stackoverflow thinks I'm trying to add real links. xttp://www.ourdomain.com xttp://dogs.ourdomain.com xttps://securedogs.ourdomain.com xttps://securecats.ourdomain.com xttp:...

How do browsers handle a multiple IP response for a single hostname from DNS?

I want to know how this is handles or if there is a standard? ...

Feasibility of modifying BIND9 encryption

Hi there, I am working on coming up for ideas on a final year project for my CS major. One of the ideas suggested by a lecturer that he would be interested in supervising would be an exploration of the application of ID-based encyption to securing DNS. From my preliminary research, I am leaning towards a project whereby I attempt to marr...

Faking DNS resolution on a per hit basis

I'm writing an app that's sole purpose is to determine if one of our core applications is up and running in production. This application is a WCF application. The app is up and running on two different boxes behind a load balancer. The site on each box is configured to listen to traffic for the following DNS name: app.company.com. DNS re...

DNS failover takes time

I have a C# web service on IIS acting like a proxy. My problem is that when the IP address of one of the backend servers change, the windows DNS cache is correctly updated (checked with nslookup) but the service continues to do some requests on the old IP for about 40 minutes. I noticed that the failover works if I stop hitting the prox...

python, dns.resolver, set specific dns server

ciao! I am using dns.resolver. Is it possible to set the ip address of the server to use for the queries ? Thanks, Massimo ...

Is there a unix command to retrieve NS records from domain?

Hi, I am looking for a way to get the primary and secondary NS records of a given domain name, and the IP addresses associated with it. Which means that I am looking for these: dns1: ip1: dns2: ip2: Now this kind of information is available from websites like intodns.com, but I am working on a huge list of domains and would like to aut...

in appengine how do i get foo.cust-one.com, foo.cust-two.com etc. to point to foo.appspot.vom

If foo is a google appengine app that can be accessed at both foo.appspot.com and www.mydomain.com How do I get various publishers to be able to access this by pointing foo.theirdomain.com to theirdomain.mydomain.com or theirdomain.foo.appsopt.com. One way is - theirdomain needs to setup a google apps account - and than install my ap...

dns cname redirect url

Hi all, I have two domain names: example1.com example2.com on example1.com i run an webserver in a shared environment on the internet. examle2.com is only a registered domain where i can only manage DNS. examaple1.com points to ip address: 123.123.123.123. the problem is, when i go to: http://123.123.123.123 i do not come on example1....

Dns.GetHostEntry behind a proxy

Hi, does anyone know how to resolve an external domain name with Dns.GetHostEntry() behind a proxy? I already tried to indicate the proxy information in my App.config (< defaultProxy >) but it doesn't work. Thanks. ...

DNS relay UDP on port 53

I noticed that BT Home are sending back fake DNS results from their DNS servers and this allows sites to bypass the IP addresses i have blocked in the firewall so i was looking to create my own DNS relay/server. So far i can receive request on UDP port 53 and send them off to the DNS server and get a valid byte[] stream result and i the...

How Do I Delete a DNS Domain Programmatically?

I am building a C# web app to manage our DNS servers and am using the WMI Namespace for everything. The only thing I am having trouble with is deleting DNS Domains. Here is my code: internal static bool DeleteDomainFromDns(string DnsServerName, string ContainerName, string Name) { try { string Query = "SE...

emails coming from [email protected]

Hi, I use google apps for my company's email but I've been having a problem lately. The thing is some people get my emails from [email protected] instead of [email protected] so when they replay to me the email doesn't get me. I think it might be a DNS problem but I don't know how to fix it. ...

How do I find my "computer description" in a Java application on Windows and/or Mac?

Dear all, I have been struggling to find the "description" of the computer on which my Java application is running. What I'm after is the name used for DNS when advertising my computer on the local network ("iMac Mattijs" in the screen shots below). On Windows XP, this name can be found here: Control Panel -> System -> Computer Name ...

Need a way in C++ to set the DNS servers on all interfaces

I'm writing a small tray app in C++ for Win XP/7, with the objective that as long as the app is running, http://*.dev will point to http://localhost. This is part of a mod for XAMPP/WAMP to permit directory-named virtual domains on localhost (so, for example, http://test.dev/index.php will map to G:\xampp\virtual\test\index.php) Part o...