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

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How to block Google DNS on my TD-W8961ND router

How to block Google DNS on my TD-W8961ND router? I want to watch my US Netflix on Chromecast here in the UK, but it will not broadcast the US Netflix over. I have been reading on a few different ...
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I need to resolve a given TLD by using a known DNS server

We have a VPN to another network and that network has a DNS server with a few resources we want to resolve by name. On a Mac I can add a file in /etc/resolver called thing.place.com inside which I ...
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68 views

No internet connection with “Obtain DNS server address automatically” IPv4 settings

I had to setup a new workstation at work today, but couldn't get connected to the internet before looking at and following the other computer's in the office DNS settings as follows: Use 8.8.8.8, ...
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kernel upgrade causes ping to fail

I am facing some strange problem. I compiled the latest linux kernel and used "make localmodconfig" to create my .config file. In the new kernel "ping google.com" does not work. However the following ...
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95 views

DNS server isn't responding windows 8.1

I have been having a very weird problem the last week with my laptop. For some reason I lose connection to the DNS server. I have figured out that if I change the DNS server to Google's, 8.8.8.8 and ...
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42 views

For my own DNS server, “dig … @ip-address” works, but “dig … @domainname” does not

I've recently begun virtualizing servers - one of which is a DNS server running BIND 9 on Debian 7. My DHCP server correctly issues it as the primary DNS for the network, but I get the following ...
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55 views

DNS server won't work! [Bind9 running on Debian 7; virtualized through Proxmox 3.1] [duplicate]

First I'd like to thank everyone in advance for helping me - communities like this are exactly what amatuers like myself need when faced with perplexing issues. I've recently begun virtualizing ...
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68 views

Unable to access website via hostname, but able to access via IP

this is probably a newbie question, but I won't learn if I don't ask :) I have a ubuntu webserver that hosts my website, and I have a no-ip account that provides the hostname. I was able to access ...
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Port Routing/DNS for individual program

Problem: Flickr has closed its http api leaving an https only api. My favourite uploader is no longer maintained, so this change broke it. My current solution to this is to set up a reverse proxy ...
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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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88 views

Intermittently, WiFi internet stops working when connected to VirtualBox host-only adapter with no internet connection

I have a virtual network set up between an Ubuntu VM and my Windows 8.1 laptop, hooked into the Host-Only network adapter. This provides an Apache server and DNS for this specific connection. This ...
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21 views

www0.sun.ac.za replies to pings?

I am working in a hosting environment. I was troubleshooting a dns issue and meant to ping www.sun.ac.za (local town university) and made a typo while specifying the host. I specified www0.sun.ac.za ...
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72 views

What does “ww35” or “ww20” mean in a URL or domain, like in ww35.mydomain.com? [duplicate]

What does "ww35" or "ww20" mean in a URL or domain like, in ww35.mydomain.com? What is they used for? Why when I visit some page using these, receive a message "This IP has been banned". Which IP ...
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1answer
25 views

How can I get IP/host using windows commandline?

nslooup something.com 127.0.0.1 nslooup 10.20.30.40 127.0.0.1 will send a query to 127.0.0.1 UDP 53. I want to use "127.0.0.1:545/UDP" as a DNS resolver. Is there any good commandline tool(Open ...
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28 views

How to figure out which application is sending a DNS query on OS X?

Using Wireshark, I found some unusual DNS queries that were ad-related. But I don't know which application was doing this. Is there any way to figure that out?
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24 views

By what route do packets travel if I use an external IP address for my home server?

Question If I connect to my home server via the domain name (i.e. via the external IP address), where do the packets travel? Do they travel to the home router, to my ISP router, and then back? ...
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34 views

block network access to a domain (ubuntu)

I have a few ubuntu servers in various geographies. I want to block all outgoing connections from all ubuntu machines (all processes) to several domains, e.g. www.server.com. I know iptables can block ...
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Dns 301 to one address and A record to another

So I got domain.com. I want to make An A record pointing at 12.34.56.78 But I also want http://domain.com to redirect to http:myotherdomain.com (301) Is this possible? 12.34.56.78 is not begin used ...
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14 views

Cannot reach domain hosted within same private network

I have a website hosted on a home server, accessible from the outside by a domain name I purchased and mapped to my router's IP with help from a dynamic DNS service. The problem is that I cannot ...
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1answer
105 views

I cannot go to google.com and other websites due to invalid certificate; possible DNS issue?

I am using Windows 7 on my PC's and my wife and I both have IPhones. About a 2 weeks ago I was having a problem on the PC's where google.com would sometimes give a 404 not found and then in the ...
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28 views

Is it possible to set up a dedicated global DNS server locally or on a VPS?

I'm interested in setting up a DNS server under my possession that is able to resolve hostnames on the web, in the same way as a public DNS such as 8.8.8.8 would do. My priority here is speed, ...
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30 views

What could be the causes of DNS Client Event error in windows log?

Long story short(and most likely the cause). Recently had work done on my cable in front of my house, and they screwed it up several times. for about a week, looked like i could stop complaining to ...
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11 views

Sender Policy Framework with several includes

I am resolving an SPF issue and face the following: Assume the domain foobar.com has an SPF record with v=spf1 include:a.a -all, then I lookup host -t txt a.a and find v=spf1 include:b.b include:c.c ...
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29 views

Dynamic DNS address only works externally

This is a problem which is driving me crazy lately. I use dynamic DNS to connect to a home server. Let's call the dynamic host my.home.net. I use ddclient to update the DNS record every few minutes, ...
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43 views

Is there a public DNS site that serves private addresses, or is there a better reliable option? [closed]

I have a private home network served by dual private DNS servers at this time. The Internet router currently serves DHCP along with the required DNS addresses. However, this entire network is very ...
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56 views

dynamic DNS for 3G USB modem

I had a doubt. Is it possible to setup ddns on a 3G dongle ? I want to be able to connect to the device connected to the dongle from anywhere in the world . That is, even if Ip address changes ...
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2answers
26 views

OS X not resolving hostnames for SSH/HTTP

I have a Debian server named neptune, with a static IP of 192.168.1.10 which provides SMB, Intranet and SSH services. On my Windows computer it resolves fine, yet on my Mac it appears under "Shared" ...
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65 views

Internet Explorer Slow throughout whole Network

Currently I'm facing a very strange Behaviour. I know, that Internet Explorer might be slightly slower than it's competitors, but i used to use it for various reasons. However at the moment it is ...
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29 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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24 views

Have Windows Server DNS redirect request to another DNS server on the same domain

I have purchased a domain name with a registrar and am using a registrars DNS. For example I have a wiki.mydomain.com in registrar's DNS manager. It is mapped to an external IP of our web server. On ...
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How do I use no-ip in broaband connection from service provider?

My computer is connected to a broadband line and I have no access to the admin page. The providers use same ip for all its users, and internal ip is dynamic. So I cannot use the admin page to ...
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61 views

how can i forward requests to my own IP address to a local IP address in my network (possibly using named)?

My setup I have a linux server running in my basement. I currently have my router looking to that server for DNS lookup, so I can use named to spoof a bunch of domain names to point to my local ...
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85 views

Set up a website on my internal network and access it with a domain name instead of IP

I have a small local network, with the following devices: a Belkin n150 router (older generation), a Dell laptop running Ubuntu 14.04 LTS (GNU-Linux 3.13.0-24-generic x86_64) as my server, and another ...
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124 views

Sendmail Deferred: Connection timed out

I got the following "Connection timed out" errors from some of the email servers, like google: $ tail -1 /var/log/mail.log Jun 15 15:55:52 coral sm-mta[9924]: s5FAo29p007675: to=<me@gmail.com>, ...
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16 views

Chrome captive portal redirect is “stuck”

I have an issue with Chrome (version 35.0.1916.114) on Windows 7 with captive portal redirects. I was travelling, but am home now, so there shouldn't be any issues, but I can't browse to ...
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30 views

Windows 7 ICS - disable DNS proxy

I'm using ICS (Internet Connection Sharing) to bridge my computer's internet connection to a wi-fi hosted network. However, I would like to define custom DNS host-to-IP mappings on the ICS network. I ...
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85 views

Systemd-networkd: How can I prepend a static nameserver entry to DHCP-discovered nameservers?

I'm using systemd 213 on Arch Linux, and systemd-networkd/resolved with DHCP to connect to the internet. I'm also running a caching DNS server on 127.0.0.1. I'd like to make this server the first DNS ...
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128 views

vestacp exim4. When I send email to my server - 550 5.1.1 Recepient not found

On my server I install vesta control panel. Then configure my DNS records in domain registrator. * A my_ip @ A my_ip www A my_ip Then i create virtual host for domain. Then i create mail domain ...
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3answers
50 views

Accessing subpage of website by IP

I'm writing a php application that uses CURL to scrape data off websites. But the time it takes to load a website with curl is very, very slow. A lot slower than the time it takes to load it in Chrome ...
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3answers
66 views

DNS server at router level vs. computer level

I've three questions. Is it better/faster/optimal to set up your server's preferred and alternate DNS servers in your OS's network settings or in your router settings? Will it cause problems if it ...
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42 views

setup Mac Book Wifi interface as Wifi hotspot using specific DHCP option

I want to using my Mac Book as an access point. Besides that I also need to configure its DHCP server to not provide DNS info. For example, Mac Books AP's ssid is "MacBookHotspot". While my iPhone ...
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14 views

How to change the domain name's corresponding IP if forget where did he apply for the name

I forget where did I apply for the domain name 'www.XXX.com' Now, I want to remap the domain to another IP, How could I do ? The domain name's owner is a company. Thanks
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What is 67.63.55.3?

On my Mac, if I ping a single-word domain, I see: PING asdfsad (67.63.55.3): 56 data bytes 64 bytes from 67.63.55.3: icmp_seq=0 ttl=241 time=93.308 ms 64 bytes from 67.63.55.3: icmp_seq=1 ttl=241 ...
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How to still using DNS even when switch the proxy in Mozilla Firefox?

I'm using some DNS on my connection on Ubuntu 14 and then I want to still using it even I switch the proxy on foxyproxy. Can I do it?
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DIG command is hanging and not timing out as expected

I ran into the following issue by accident when playing around with the DIG command and testing some domain names. Why does DIG hang and not timeout after 10 seconds when executing the following: ...
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how to map sub domain to amazon ec2 and main domain mapped to shared hosting

I am trying to map subdomain to amazon ec2 with elastic IP. I already mapped the www.xxxexample.com to my shared hosting by giving the dns server name (ns1.justhost.com). And I created a many ...
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49 views

How host name is translated to IP Address when the DNS server is turned off?

I have several virtual machines on virtual box with windows 7 installed and one has windows server 2012 which is acting as domain controller and DNS. When I turn that Windows Server off which was ...
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35 views

How to eliminate the downtime when a dynamic IP address changes?

We currently have a number of client computers linked up to a database server (MS SQL 2008) for replication. The database server recognises the computers based on their Windows hostname. We are using ...
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2answers
28 views

Is it possible to do full URL logging in routers (ie not just subdomain level)?

I'm using OpenDNS to log websites visited. But I only get the domains/subdomains visited. Is it possible to log the full URL visited (for example http://superuser.com/questions/ask, not just ...
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41 views

failed to map networkshare in WinPE, DHCP disabled

I want to map a network share in WinPE during an unattended Windows installation. Because I don't have DHCP and very strict firewall settings, I set the ipconfig manually with netsh. I also set the ...