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

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How to navigate to a subdomain without specifying the domain? (in a web browser)

I want to be able to navigate to my home network's web server from my browser without having to type in any domain or top level domain. For example, I want to type: http://mylinuxbox/ and have it ...
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22 views

DNS considerations on a linux router ( tracert, dns, local dns and ping latency )

I have a complex question it seems. I want to know why is it that when i run the tracert command from my Windows PC going through my linux router it takes 4 pings to jump to the next hop of the ...
4
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1answer
3k views

Windows 8 Chrome DNS issue

Sometimes when I want to visit random site I get "The server at www.something.here can't be found, because the DNS lookup failed" which looks pretty standard. When I go to ...
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15 views

Incorrect WINS record on Linux for NetBios, removing bad WINS record

So I have a Ubuntu 14.04 server that I'm trying to get to run as a Domain Controller for a set of Windows machines. I've set up a Bind9 DNS and it works fine, pinging the nameserver gives the correct ...
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1answer
14 views

Routing requests to my local domain's www to an external www server using bind

Goal I want to get my web browser to display the contents of the page at http://www.google.com when I navigate to http://www.domain.tld (leaving the latter in the browser address bar after loading). ...
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16 views

Linux VM DNS stops working when host connects to Cisco Any connect

I have a Linux (Xubuntu 14.04) VirtualBox VM inside a Windows 7 host. I have the network set up as NAT (and bridged is not an option) and I also have a host-only connection. When not connected to my ...
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34 views

What's wrong with RDP Windows 10 client?

Connecting to Windows Server 2012 via Windows 10 Enterprise. When I connect using .rdp it will connect very slow when I enter a specified domain name (which has been added in our internal netwerk). ...
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2answers
18 views

Where is DNS cache located on Windows 8.1?

I'm reading about DNS cache and particularly about ipconfig /flushdns command. There are many resources out there - QA, blogs, sites - that explain what is DNS cache but none of them say where DNS ...
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16 views

No external DNS when connected to Cisco VPN and tethered

I use Cisco AnyConnect to access a VPN for our main vendor. I use it on my desktop at the office every day. Today I'm working from my laptop at home but due to internet slowness I tethered my laptop ...
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1answer
266 views

Set unique DNS settings for one specific Linux process

I'm not sure if it can be done, but here's what I'm trying to do. I am on a mac but trying to solve first for Linux, which is probably more general and might be easier. I want my system to be ...
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2answers
3k views

How to display DNS cache without using ipconfig?

I am having a problem trying to get the DNS cache without using ipconfig. I am unable to use the ipconfig tool and was looking for an alternative command line tool to display the DNS cache, just like ...
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20 views

Having two IPs for same hostname in hosts file

Request I would like to have my hostname let's say hostA resolve to IP1 if i am at home and IP2 if i am remote Is it possible to have two IPs for the same hostname so that it tries them both and takes ...
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2answers
243 views

DNS Resolver for Windows over TCP

I know that DNS uses UDP with Port 53 for DNS queries. However, at my place sometimes UDP requests are blocked and DNS fails. I know that there is protocol for DNS over TCP and many public DNS servers ...
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24 views

Outlook 2016 determine if Autodiscover is being blocked by Internet connection or if something isn't configured correctly with DNS

I have a client who has multiple devices connected to the Internet provided by the building owner (they rent the office). Devices are connected via wireless and by Ethernet. Personal devices such as ...
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1answer
22 views

How to setup a CNAME (alias) for a machine on my home network

I want to do this to: test name based virtual hosting provide friendly machine names to other users of the network. My home network is behind a Synology RT1900AC router if that is relevant. What ...
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1answer
3k views

Windows unable to resolve hostnames

I have two Windows 7 machines on my home network that always give 'Unreachable' errors when I try to access any site. The other devices on the same network work fine (iPhone, iPad, Mac, Ubuntu) The ...
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1answer
122k 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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29 views

How do I resolve Chromium: DNS_PROBE_FINISHED_NXDOMAIN when DNS appears to be working normally outside Chromium?

I am using the Chromium web broswer on OpenSUSE 13.2. Occasionally I encounter an issue where trying to access any website results in a DNS_PROBE_FINISHED_NXDOMAIN error. This error persists on all ...
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1answer
14 views

What can be the cause if DNSSEC suddenly stops working and normal resolving is extremely slow viua unbound?

Suddenly, every .com domain failed DNSSEC validation (regardless of it is signed or not), and normal resolving fails randomly with DNSSEC disabled, for example all youtube videos say "A error ...
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24 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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1answer
14 views

Cannot ping FQDN, but can ping IP and can update

Ubuntu 14.04 on machine behind a router and switch along with numerous other devices. Nothing is behind the server at this point (though everything used to be, thus the two interfaces configured as ...
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35 views

How to reach LAN website by domain name?

I have a PC, router and smartphone. PC has a website, that can work only by domain name. I need to reach website with smartphone, when it is on the same network. I've started a DNS server on PC ...
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268 views

Windows 10 is not using my IPv6 address by default

I have IPv6 addresses from sixxs.net but if I ping a host that has both IPv4 and IPv6 addresses (i.e. www.google.com or www.facebook.com) I get the IPv4 address on windows 10 but on all the windows 7 ...
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1answer
3k views

Changing Gateway and DNS addresses with batch file

I'm having a little crisis every time I have to change the gateway in order to access different sites from my workplace. It's time consuming and I'd be really glad if someone provides me with a script ...
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2answers
4k views

Minecraft servers - 1 external IP, 2 servers, 2 ports - avoid specifying port in game - SRV record

I have two minecraft servers, on sub-domains. www.server1.example.com and www.server2.example.com. server1 is port 25565, server2 is port 25566. When users want to connect to a non-default port in ...
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23 views

Adding a record to google's DNS same as registering a domain?

Is adding a record to google's dns server lets say, Example.com -> 127.0.0.1 going to be the same as buying a domain from domain name resellers? Since most ISP do add that DNS server to their ...
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43 views

How to reconfigure NAT servers so they are exposed?

Here is what I have: Live HTTP server (104.x.x.x) DD-WRT'd wireless router (192.168.2.1 / 8.8.8.8 DNS server) Win 8 Notebook PC (192.168.2.100) VMWare BIND DNS server (192.168.3.108 / NAT on ...
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1answer
17 views

understanding excessive DNS traffic to cron.sh

I noticed that my domain cron.sh is receiving more than a million DNS requests a month, exceeding its dyn.com quota. Set up djbdns for it and observe that thousands of hosts around the world want its ...
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2answers
4k views

Using dnsmasq with NetworkManager

It was well known that NetworkManager does not play well with dnsmasq (ref: here). I've skimmed throught the lengthy discussion here but still not sure what the recommended way to deal with the ...
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1answer
43 views

How do I create rDNS (Reverse DNS)

How to create rDNS (Reverse DNS), I am using Centos 7.0 and I need to create rDNS for 50 IP's and domain. Can you please guide me how can I create. Example. Example.com - xxx.xxx.xxx.xx0 ...
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3answers
1k views

resolv.conf keeps getting overwritten when dnsmasq is restarted, breaking dnsmasq

I'm running Debian Jessie and I'm trying to configure dnsmasq as a caching DNS server. I used a guide to come up with the following /etc/dnsmasq.conf: listen-address=127.0.0.1 bind-interfaces ...
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Set up dns server bind9, how to redirect from one webpage to another ip address?

I´m trying to set up bind9(ubuntu 14.04) so that i could redirect certain pages to other addresses...I can´t do it with restrictions in /etc/hosts because the goal is to have another device access the ...
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2answers
41 views

How do I figure out what's caching the DNS for a specific domain?

I'm using linux (openSUSE 13.2) on my computer and my router is DD-WRT. There is a domain that, when I ping, keeps returning the wrong IP address. My Router has the domain name server as Google's ...
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17 views

Hotspot on linux computer, trying to forward addresses of certain pages to other addresses

I set up a hotspot on my ubuntu 14.04 using plasma-nm(kde-nm-connection-editor) 1 and made some restrictions in /etc/hosts2. The restriction applies on the laptop(jumps to local host instead of ...
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1answer
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iptables: is it possible to combine “string” and “mac” modules results?

I have a raspberry pi running dnsmasq. I configured all my local devices to use this device to resolve DNS queries. I like to block certain devices using their MAC address from certain queries. ...
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573 views

How can I fix DNS resolution on second router in home network?

Symptom: Delays of up to 30 seconds resolving DNS when plugged in to or Wif Connected to second router. Ping can take just as long via domain name, near instant via IP No problems when connecting ...
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1answer
38 views

How to redirect certain website on my wifi network?

I am trying to find a way so that on my wifi network I can restrict the access of site like facebook I can do this using parental control . Is there any way so that I can redirect to certain host or ...
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1answer
52 views

nslookup times out when result is 127.0.0.1

I have set up a subdomain with an A record of 127.0.0.1 (set up more than 24 hours ago at the authoritative server, just like how I would set up a normal subdomain) for the sake of development. Let's ...
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2answers
58 views

Disabling IPv6 capability in my network adapters resolved my extremely slow DNS resolution. Why?

Obviously not everyone has this issue since IPv6 is enabled by default, so why me? I'm using Google's IPv6 servers. Once I unticked the checkbox for IPv6 in my adapters' properties, pages began ...
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2answers
5k views

Why can't my Browser resolve host, but ping and nslookup can?

I'm a bit stumped by this problem. My machine can ping google.com and www.google.com successfully. I get correct ips like 74.125.. When I try to go to google in Firefox or IE or Chrome, I get a ...
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2answers
28 views

connecting to a domain controller / when logging into computer

When I am login into my computer, I can see that it is joined to a domain -> company.local So I am thinking well, company.local will be resolvable by an internal DNS to a domain controller's IP, so ...
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1answer
46 views

how will DNS work under this circumstance (when no domain name specified)

Supposingly there is a host/server in the network with FQDN as "host1.example.com" Can i know what will happen when i on another workstation, do a "ping host1" assuming that host1 is not recorded ...
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30 views

dd-wrt dnsmasq working only immediately after flushdns

It's been a couple of years since I have a DNS configured in my dd-wrt router to 2 specific sites that I need to access and they're restricted in my provider. I've never changed any configuration, ...
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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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1answer
28 views

Redirect certain domain to personal domain via dns

I'm trying to redirect all traffic requests from a domain that I don't own to another one that I do via dns. But Acrylic can only forward to an IP, not a domain. Is there any way I can do it using ...
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18 views

Logwatch showing Named host unreachable

I'm new to system administration and wondering what this means in my logwatch report. I run a DNS server for my domain name and have recursion set to no and allow-transfer to none. Is this someone ...
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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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2answers
4k views

Random redirection to adult sites of mobile.juicyads.com

Since two days ago, almost all of my clicks open new tab and redirect to this Adult-only URL: mobile.juicyads.com/service_redirect.php?p=64686&s=124309&u=http://www.google.com Parameters p ...
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1answer
3k views

DNS Tunnel using iodine in Windows XP

I want to start DNS tunnel in Windows XP, so, after searching on Google, i found the iodine for windows. Reading ReadMe of iodine, show me to create TAP using openvpn. So, after install the openvpn ...
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571 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 ...