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

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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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388 views

Replace or disable OS X dns cache?

I'm having trouble with OS X's dns cacher and I'm wondering if it's possible to simply disable it or replace it with a better / more configurable program? I don't suppose it's as easy as deleting an ...
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156 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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25 views

Tracert public address before internal address

So, I have been having problems with Frontier's 74.40.74.40 and 74.40.74.41 DNS servers essentially hijacking certain websites like Google over SSL (gives security warning) and have been trying to ...
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50 views

Configuring IP over DNS with iodine

What I am trying to do I am trying to implement a IP-over-DNS tunnel using iodine by following both this tutorial and this one (further in this question I outline exactly which steps I took). I want ...
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137 views

WMI query fails with “A security package specific error occurred.” Exception 80070721

Problem In Powershell after executing the following command ... Get-WmiObject Win32_ComputerSystem -Credential second.nl\administrator -ComputerName srv02.second.nl ... the following exception is ...
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870 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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3k 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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2k views

How to find the last IP used for an expired domain name?

Is it possible to look up the last IP address of an expired domain name?
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999 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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1k 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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573 views

iodine fails its ping test

I'm trying to get iodine working on my Ubuntu machine. The server is working fine, but when it try to establish a connection, and change the route table using the default iodine-client-start script i ...
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34 views

Why can I ping machines using the .local suffix, but not without?

My local network uses a .lan suffix. I would rather not use any suffix at all, but apparently pfSense doesn't permit this. I am running Windows, MacOS and Linux systems on this lan. Most of my ...
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50 views

Bind on different port with linux

I have a bind9 DNS server that I have configured to run in port 55 but I can't get the setup working. The server is works fine but I can't tune my local machine to resolve nameserver queries from ...
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43 views

Prefer custom docker network or custom dns server

I want to set up a small web server running several web apps, like OpenProject and GitLab, as well as OpenLDAP for user management. In order to encapsulate the single applications, docker should be ...
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55 views

Very Strange Repeated TCP/IP/DNS Warnings

Every 75 minutes a warning is posted in my system event log. With very few exceptions, this continues 24/7 and has occurred for months. The warning is from source DNS Client Events, event ID 1014, ...
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61 views

Firefox is always using proxy server when entering single hostname

We have the following problem here: When entering a single hostname without suffix in Firefox the browser will always attempt to send this request to our proxy server. The proxy server itself is in a ...
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69 views

White Label nameservers running WHM/Cpanel DNS only with hostname alias

Our company has it's own dedicated nameservers running cPanel/WHM DNS Only, which are using the hostname ns1.ourcompany.com ns2.ourcompany.com and so forth. One of our clients is a reseller and ...
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177 views

DNS Search Suffix: Multiple domains, multiple DNS servers

I'm at work connected to workdomain.com I use a client VPN connection to connect to homelab.com Now if I ipconfig /all I get: Windows IP Configuration Host Name . . . . . . . . . . . . : ...
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46 views

2 servers and only one way traffic

This has me stumped... I've got an old war horse SBS 2003 server and a server that is a few months old running Server 2008 R2 (Don't ask me why they put 2008 on it when it's so new...). The 2003 ...
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148 views

Belkin AC1200 Router - not resolving DNS requests

In setting up a Belkin AC1200 Modem Router for a family member, I've noticed a weird problem. It connects to the ISP fine and gets their DNS servers etc. However, no device connected to it can resolve ...
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90 views

Consul server is not elected leader, leads to non-functioning DNS

I made the IP-address explicit to which consul should bind, now the DNS is not working at all, meaning I get a response, but only [root@slave ~]# dig @127.0.0.1 -p 8600 ...
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161 views

I have a web server, and a local server. I want to host gitlab on my local server, and access it through a subdomain on the domain I own

How do I go about doing this? I don't need to know about the networking aspect as far as my home is concerned, but I'm not familiar with DNS settings, and I've really never messed with advanced ...
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492 views

Internet Connection Sharing with Wireless Hosted Network (WHN) is not providing a DNS server for WHN clients

On Windows 8, I'm using a wireless hosted network with ICS. I have one interface connected to internet, and my WiFi interface as a wireless access point. The interface that is connected to internet is ...
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73 views

DNS options windows 7 aren't saved?

I'm trying to use a free DNS (such as Google's: 8.8.8.8 / 8.8.4.4) by typing this in thoses options: But when I click on "validate settings upon exit" and "ok", the network diagnostic tool from ...
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108 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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209 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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458 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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259 views

Set port for DNS on OS X

I'm using OS X 10.9.1 and I want my DNS lookups to happen on port 54 instead of 53. First I looked here but the file states: This file is not used by the host name and address resolution or the DNS ...
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134 views

My nameserver isn't registered?

My problem is that I am trying to set my domain's nameservers to the nameservers of my dedicated server. My domain is hosted by Namecheap, and everytime I try to input the two nameservers for my ...
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74 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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34 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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176 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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564 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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2k views

DNS Server not authoritative for this zone in windows Command Prompt

Every time I try and enter a location on my computer through the command prompt, e.g. C:\Users\Owner\workspace\swarm it keeps returning with "DNS Server not authoritative for this zone", what ...
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73 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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898 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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522 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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193 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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642 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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373 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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15 views

Win7 add DNS suffixes after primary

I want to use the primary DNS suffix provided by the router on the given LAN I'm connecting to. And after that I want a small set of suffixes that never change. For example: Office DNS suffix: ...
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32 views

How to use DNS alias as sender address for sendmail

I have the following setup: My Ubuntu (14.04) server gets a host name from DHCP (real.host.de) and there is a DNS alias (alias.host.de) that points to this host name. Now I want to configure ...
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21 views

DNS stops resolving after few minutes. On WiFi only

I have Windows 10 x64 Enterprise. This happens only on WiFi network. Doesn't matter if I'm using build in or USB adapter. I tried using Google DNS, Open DNS and default DNS. Doesn't matter which one ...
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21 views

Better to block a host to 0.0.0.0 than to 127.0.0.1?

I have a few hosts that I would like to block in my /etc/hosts file. For that I need to define a bogus IP address that the DNS queries get resolved to. Most of the tutorials I saw so far all mention ...
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11 views

Is there a way to failover mount.cifs to new ip address recorded in the DNS?

Is there a way to failover mount.cifs to new ip address recorded in the DNS? Consider this scenario: mount.cifs -o user=test //fileserver/share1 /mnt move "fileserver" to second server with new IP ...
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24 views

Google Services doesn't work with google DNS

I use DSL at work and home, from the same ISP. I have the same router with exactly the same model at both locations. I Have configured the two routers with the very same configuration except the ...
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28 views

PC can be 1 server DNS but not the other

So we have a Windows 7 Embedded Thin Client out on our production floor. It has been out there for a few years and never had any issues with it. We have an ERP server that the users access the ...
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18 views

Ubuntu ping/search not working

I'm new to Ubuntu Server 14.04, and I'm trying to ping Google to see if I can reach the outside world. I have searched, but I can't figure out the problem. I'm connecting via my wireless router, not a ...