Translates domain names to IP addresses. DNS stands for Domain Name System.

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124 views

what is a scoped dns query?

In MAC OS X (Mavericks) i see multiple resolvers and i dont understand the difference between scoped and non-scoped dns query resolver as displayed below. $ scutil --dns DNS configuration resolver ...
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21k views

ERR_NAME_NOT_RESOLVED in Chrome on a single site

Our internet connection at the office went down for a bit yesterday, and now Chrome can't find youtube.com. I get the ERR_NAME_NOT_RESOLVED error, even though the site loads perfectly fine in other ...
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2k views

Cisco AnyConnect vpn stops internet connection in Windows 8

I have a VPN set up through Cisco AnyConnect 3.1.04072 on a Windows 8 laptop. I can connect to the vpn, but as soon as I do, all internet traffic stops. I've been researching for days now and I ...
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3k views

nslookup returns the right IP, ping still goes to the wrong ip

Ok, so here's the setup. Laptop is connected to our company VPN (Juniper Network Connect 7.2.0). There are two DNS Search suffix's (domain1.com, domain2.local). From that laptop, while connected, ...
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657 views

Is there a way to enable/disable IPv6 without restarting Chrome?

chrome://net-internals/dns#dns has a button which allows us to enable IPv6 for Host resolver: This is how it looks like after clicking Enable IPv6: How do I revert to the previous state without ...
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869 views

Local hostname fails to resolve only in browsers

I am having an issue on Windows Server 2008. Basically the problem is that whenever my local hostname is used in a browser it fails to resolve. As far as I can tell the name is correctly set, I can ...
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3k views

Windows 8. Hosts file doesn't work

I am using Windows 8 developer preview (x64) for testing purposes. I want to access some local network resource by DNS. So, I've added next line to my hosts file (%sindir%/system32/drivers/etc/hosts): ...
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140 views

“dnsbackend unable to load module” error when configuring PowerDNS for Windows XP

I am in need of an easy to setup and free DNS server for Windows XP. I tried PowerDNS but am not able to use the bind back-end: When I put the following in the config file launch=bind I get error ...
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57 views

*.org domain websites are not loading

The problem is that any page with *.org domain in not loading on my computer (Ubuntu 14.04). Any other domains like *.com, *.net are loading! This is very strange. I tried in different browsers, and ...
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43 views

Able to receive, but not send email over SMTP from VPS. I don't think I'm being blacklisted

The error I get is "421 Downstream server error" or something similar. Up until a few days ago I could send mail without any trouble. I've searched around, and most other people with this problem end ...
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296 views

Error message while connecting to EC2 instance via Cygwin

I am trying to connect my EC2 instance using the directions my instructor provided below: "To connect to EC2 via Cygwin on Windows, you need to handle two key idiosyncrasies. First, the Windows ...
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69 views

DNS tunneling through an SSH connection looses connectivity

In the article 'UDP traffic through SSH tunnel', it is described how to tunnel DNS trough a SSH tunnel: client# ssh -N -L 6667:localhost:6667 user@server server# mkfifo /tmp/fifo server# nc -k -l ...
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719 views

Why do I have to keep flushing my DNS cache?

Several times a day, my Internet connection stops working on my Windows 8 computer (it's not the network, other computers on the network work fine). It happens on all of my Windows 8 computers ...
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313 views

VPN DNS Configuration bug in OS X

I am using TunnelBlick to connect to an VPN (OpenVPN) with OS X 10.9.2. I can authenticate and pass traffic but the DNS entries injected from the VPN do not work. Here is the output of scutil --dns ...
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71 views

ubuntu 11.04 DNS issues

I'm experiencing some issues involving my Ubuntu Server. So far, I can connect to machines on my local network, but the server itself doesn't have internet. And since the each machine is routed ...
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32 views

Try two different domains for an exchange server in OSX

Our mail server is accessible through domain1 on LAN and domain2 from outside. Is it possible to round-robin a CNAME in OSX? Any other way to solve this (other than multiple Office identities, which ...
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128 views

Windows Server 2008 R2 cannot change DNS Domain Context on some machines

So I have a small Windows Server 2008 R2 network consisting of a domain controller, a file server, SQL server, etc. All machines are joined to a windows domain (CPUSHIELD.COM) and show up in Active ...
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428 views

Windows 7 Home Premium Ignoring DNS Suffix seach list

I am using Cisco AnyConnect to connect to my work network for a work from home situation. The connection is fine, however I am having a DNS problem. My work DNS has various suffixes, but for some ...
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63 views

How to troubleshoot network connection issue when a single website won't load?

I have a router which runs fine for all websites except for one in particular, that one website works sort of, it loads but no images show and the CSS sometimes doesn't load. I have already tried ...
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534 views

Performing DNS Queries via Javascript from Chrome App

Goal: Create a Chrome app/extension to determine value of DNS requests in local value (i.e., determine what A and CName records a local machine or its delegated resolver is returning when Chrome ...
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2k views

Setting Windows to resolve all hostnames via DNS when not connected to a Domain Controller?

The enviroment is a private network with a single router using DD-WRT's dnsmasq to resolve names and do caching. Resolving hosts via DNS works fine: dig +short @192.168.1.1 gamma 192.168.1.22 Now, ...
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368 views

Subdomain redirects to main domain

I'm currently working on a site which uses a subdomain. The subdomain works fine for everybody, every device and every browser I've ever tried, except for Firefox on my computer. My computer is a dual ...
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116 views

Junk mail criteria used by Exchange and/or Outlook

Is there any documentation, official or unofficial, about how email ends up in the junk folder? Emails from a domain that I am hosting ends up in my junk folder, and presumably in everybody else's ...
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609 views

Hacker News mysteriously blocked on my Mac OS X Lion

When I try to access http://news.ycombinator.com on my computer, I get 502 proxy error: Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not ...
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344 views

Using dnsmasq on OS X when not connected to the Internet

I'm routing dns requests through dnsmasq so that domains I'm using for local development point to 127.0.0.1. This works great when I'm connected to the Internet via Wi-Fi or ethernet, but I start to ...
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27 views

Why does nslookup give me NXDOMAIN in this case?

I'm configuring a DNS in Fedora. I have the zone file: $TTL 86400 $ORIGIN example.com. @ IN SOA ns.example.com. root.example.com( 2013121201 ;Serial 28800 ;Refresh 15 ...
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15 views

Mac OS 10.10 ignoring Openvpn DNS settings

Running Mac OS 10.10. Setup a openvpn connection and put the DNS servers to be used with the VPN connection under VPN Profile->Advanced->DNS. When I connect, it only uses the the DNS server pulled ...
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26 views

No internet connection, Win7, DNS DOES resolve

I just installed a fresh new copy of Win 7 64-bit. My ipconfig says that my dns do resolve, and everything looks as it should. Device Manager tells me that my network drivers are fine, and working as ...
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32 views

DNS: CNAME entry breaks mail

We have a www.website.com on which www is CNAME to another website (third party service). However, when I ask the hosting company to forward website.com—without www—to the 3rd party web service, they ...
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29 views

How can I connect to UNC path on an external server in Windows Explorer?

I am using Windows Explorer and would like to connect to a certain IP address. After that, I want to connect to a different IP address through the server. Ex: A -> B -> C A is my current computer. B ...
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92 views

What is wrong with my Dynamic DNS settings?

I host my own website on a home iMac. The website is accessible from its local and remote IP addresses, but recently, the hostname stopped working because the DNS stopped updating. I have been ...
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22 views

how can i set up BIND to use a different DNS for a specific domain

at work we are using a VPN tunnel to communicate with an external network that is set up for testing. There is also a DNS running inside this external network, and I would like to have a local DNS ...
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56 views

CNAME and MX records on naked domain

I have a domain (registered with Daily.co.uk) that for quite a while was set up with a CNAME pointed to my friend's webserver which uses dynamic DNS to resolve to his IP, in addition to MX records ...
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21 views

Static routes in ISC DHCP

I have an Ubuntu 14.04 server at home running bind and ISC DHCP. Bind is caching from unblock-us.com so that I can get access to US Netflix content. This all works fine. I'm running into trouble ...
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19 views

DNSSEC- Client software

I'm interested in running DNSSEC, not sure how this works. Does DNSSEC need to be supported both on the client and server. I currently have DNSSEC on my domain hosting site and the VPS server but if ...
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47 views

Strange Local DNS issue involving Comcast, not a Comcast User

I have a network with 3 desktops (2 x Win7 x64, 1 x Win7 x32) connected via ethernet and 1 laptop (Win7 x64) connected via wireless most of the time using a Linksys WRT54GS. I have a desktop ...
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58 views

Multiple IIS server share same domain and port?

I have the following network/server setup: Since this is for a startup I'm working on with a friend using the resources we have, we use a DD-WRT router to redirect port 80 requests to a specific ...
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138 views

Why do I have to keep flushing my DNS cache on all devices?

I have a Netgear DSL modem (111 v2) and Linksys N300 router, newest model. I have to keep flushing my DNS cache every 5-15 minutes. This happens on all sites and on every device on my home network. ...
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206 views

PING domain is very slow but NSLookup is instant, website takes a long time to appear

My Internet is behaving very strangely the last few days, DNS resolution is very slow, PING domain can take a minute - sometimes the there's no delay for a period of time. PING IP address and ...
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49 views

Issues accessing file shares of certain servers across site to site VPN

We recently had a problem crop up with one of our remote facilities, i'm not a system admin, and we are currently without one, but I will try to explain the best I can. Employees at the remote site ...
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45 views

Why doesn't my DNS change propagate within the TTL?

Why isn't my DNS propagating correctly? It has a TTL of 3600 seconds, 1 hour, yet it is still resolving to an old IP. It's been at least 10 hours! http://www.onlinedig.com/go-dig/ C:\>nslookup ...
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41 views

How to switch between DNS suffixes using CMD (netshell)?

at my job, I have to manually switch between: 1) append primary and connection specific DNS suffixes and 2) Append parent suffixes of the primary DNS suffix a bunch of times per day (due to a ...
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84 views

White label Nameservers (RDNS): IP and BIND Syntax Questions

Some questions regarding setting a RDNS on a DNS cluster using BIND/WHM/cPanel + WHM DNS Only. Objective Setting up a DNS Cluster of: East US | Xen | CentOS 6.5 | with WHM/cPanel VPS | 2 IPv4 | ...
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88 views

DNS resolution for some domains fail but dig +tcp works

On my home internet connection, I'm able to resolve most domains but none of the sub-domains of cloudfront.net resolve. $ dig @8.8.8.8 resolver-identity.cloudfront.net ; <<>> DiG ...
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34 views

How to setup communication between virtual machines

Probably my issue is not hard to resolve but I got a stuck. I have several LXC containers. One of them has MySQL, RabbitMQ, MongoDB (and several other services) installed and configured. Every other ...
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139 views

Exchange 2003 & Godaddy Migration to Office 365

Here's a decent project I'm about to tackle, thought I'd double check with you folks. Here's the scenario... Existing AD DS with Exchange 2003. They decided to upgrade to Office 365 Exchange. ...
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128 views

Google products and services not loading at all

This started suddenly. Basically i was watching videos on youtube, and suddenly it stopped loading. After a few refresh attempts, it started saying Firefox cannot find the server at ..... Then I tried ...
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202 views

Windows 7 not using VPN DNS Server

I'm connecting to my company VPN using OpenVPN. My VPN network is 192.168.32.x and it resolves to the company network which uses 10.0.x.x. My home network users 192.168.1.x. When I connect, Open ...
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98 views

Create a DNS record for second level domain from within a third level subdomain

I have an AD domain "company.example.com" with a couple of servers inside, a DC "dc.company.example.com" hosting an AD-integrated DNS zone. There is also a "example.com" public domain, with ...
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36 views

Setting up local DNS connected to a dynamic DNS service like NoIP

I've been trying to set this up for a while now and I'm just not sure what to do at all. I was following this tutorial here on setting up your own DNS server ...