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

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Resolving local hostnames with D-Link DIR-657 router

How can I resolve local hostnames with the D-Link DIR-657 router? With my old router I could just enter the device name followed by .home, eg. raspberrypi.home. However neither of these seems to ...
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260 views

DNSCrypt not working - server certificate possibly expired

I have been using DNSCrypt for a few days (used this guide to install dominustemporis.com/2014/05/dnscrypt-on-windows-update/) and it has been working fine for a few days. Today I switched on my ...
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13 views

DNS Issue in ubuntu 14.04

I am facing DNS resolving issue sometimes in my Ubuntu 14.04.2 LTS trusty. I have configured my system with network manager to work with static IP assignment. I have also tried by changing DNS server ...
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41 views

DNS not functioning on command line

I recently did a combination of Vagrant + VirtualBox stuff on my machine to try to get a virtualized Ubuntu install working. However, I had no luck with it so I just uninstalled everything. Ever since ...
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182 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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32 views

Chrome & IE can't access local website, while Firefox can. How to debug?

1. Enviroment 1.1 Host machine Windows 8.1 Enterprise Chrome v42.0.2311.152 Firefox v38.0.1 IE v11.0.9600.17031 VirtialBox Vagrant 80 port forwarded to port 80 at guest machine at 192.168.56.101 ...
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25 views

How does virtualbox get the network configurations?

I am installing CentOS 7 on virtualbox. On "Network & Host Name" screen: When toggle the "OFF" to "ON", I can see the IP, DNS, netmask are all configured: I am curious about how does ...
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21k views

“Network is unreachable” when attempting to ping google, but internal addresses work

I can get to other PCs in my house on the 192 network, but trying to go outside gives me the "network is unreachable" message. p3p1 is up with a good IP Address. Running Fedora 16. What should I ...
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24 views

How additional IPs are added to hosting

Hi i have centos server with 1 ip address. I bought 2 more ip address from same server company, and i added them in ifcfg-eth0:0 and ifcfg-eth0:1 in my server. When i ping within my server using SSH, ...
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5k views

Name resolution for the name…timed out after none of the configured DNS servers responded

I am getting this message in system event during my PC startup Name resolution for the name website.com timed out after none of the configured DNS servers responded. And another same message ...
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36 views

2 Routers 2 ISPs 1 DNS, Hiding DNS requests

Firstly I am going to explain my network topology. I've got 2 routers serving separate ISPs and they are connected to each other via LAN and each one has its own dynamic IP and DNS by the ISP, my ...
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39 views

Windows can't communicate with the device or resource [duplicate]

I have this problem in troubleshoot "Windows can't communicate with the device or resource (primary DNS server)" . My router is using a opendns server IP and I don't want default DNS server use ...
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88 views

Wifi stops working every 10 minutes on Mac OS X Yosemite [SOLVED]

Every 10-15 minutes, my internet connection fails in the following manner: Cannot load websites Cannot connect to Dropbox Cannot connect to IRC Skype still works Slack still works Still able to ...
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17 views

point multiple ip address to hosting

I have centos server, earlier it had 1 ip [ a.b.c.d ] (external ip , eg., 141.101.114.59). Now, I bought 2 additional ip [b.c.d.e , f.g.h.i] (external ip , e.g, 190.93.244.58 , 130.93.245.8 ). I have ...
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1answer
2k views

Using VPN connection in OSX will only route through the first service in “Service Order”

I am trying to get my VPN connection to only route network traffic related to my workplace through the VPN connection and any other traffic through my Wi-Fi connection. If I have my Wi-Fi at the top ...
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11 views

Remote Management address different from Computer Name

We are an educational institution with managed computers using a management server. Our computers are bound to an AD server as well for LDAP. The issue we are having is the remote management addresses ...
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43 views

Changing nameservers and MX records at the same time

I have a domain (mydomain.com) with working email (provided by the domain registrar, let's call them ExistingHosting), but no web site. I now want to create a web site, hosting it with a different ...
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2answers
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Why doesn't “ipconfig /flushdns” completely wipe your DNS?

I've consistently had a problem where "ipconfig /flushdns" + restarting computer doesn't get rid of all the DNS records. Should it completely flush any and all records in DNS? Why doesn't it usually ...
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21 views

How to avoid using domain controller for DNS queries from web browsing

I'm trying to setup a Windows domain for a few PCs at home and work. Both Active Directory and DNS are on the same server but it is at US while I'm physically in Asia. In order to make the domain ...
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What are the pros and cons of using an alternative DNS instead of the ISP DNS server?

I searched the web for answers, but I haven't found anything conclusive. What are the advantages/disadvantages of using an alternative DNS (for example, OpenDNS or Google DNS) as opposed to the ...
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1answer
15 views

Is Metasploit's reverse_tcp_dns meterpreter slower than reverse_tcp in establishing a connection?

I suppose it is, because the DNS has to be resolved whereas reverse_tcp uses an IP address. I would like to know all the differences between them, because although I like reverse_tcp_dns, I would ...
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16 views

Vagrant Networking - can ping IP but not a FQDN

I have a CentOs vagrant machine and I have no problem pining an IP address such as: 216.58.223.4 When I try and ping: www.google.com, it is unable to find the network. /etc/resolv.conf This file ...
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85 views

Windows 8.1 + DNSCrypt + Unbound for DNS Cache

I'm following this guide (http://yvoinov.blogspot.it/2014/05/windows-7-unbound-dnscrypt.html) and others but nothing: I have Windows 8.1 x64, DNSCrypt 1.4.3, Unbound last version downloaded from the ...
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46 views

How To Make My DNS Like Google DNS server for example [closed]

my question is how to make dns like : primary dns : 8.8.8.8 secondry dns : 8.8.4.4 for example using windows server 2003 to make this dns what i have got is that i can make this dns by make 2 zone ...
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24 views

How do I use both my router as a secondary DHCP server?

I have a Ubuntu based server and a Draytek router. As it stands, my router is acting as the DHCP server and tells clients to use my ISP's DNS servers. I'd like to look up local machines by name ...
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3k views

domain MX record not found while installing Zimbra

I am getting this error: DNS ERROR resolving MX for localhost.localdomain It is suggested that the domain name have an MX record configured in DNS Re-Enter domain name? [Yes] named file: $ttl ...
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57 views

I'm benchmarking various DNS servers and one of the adresses shown seems like my router, how to check it?

I'm using DNS Bench to test 10th's of DNS servers, and two addresses in the list appear to be from my router: 192.168.0.1 Non-routable local internet address 192.168.1.20 Non-routable ...
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4 views

what would be the benefit of adding a dns server to isc-dhcp-server

I have a very simple networking setup. I have a couple server applications like plexmediaserver, transmission-daemon, samba, etc... My router just went down, so instead of buying a new router, I just ...
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1answer
15 views

what is ddns-update-style in isc-dhcp-server on ubuntu

I have a ubuntu server setup as a router (among other things), I now am adding a dhcp server to it. When configuring isc-dhcp-server, the /etc/dhcp/dhcpd.conf file has an option called ...
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4answers
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Chrome is unable to connect to the Internet

I'm getting the error code: DNS_PROBE_FINISHED_NO_INTERNET in Google Chrome. The thing is, I have a working internet connection. I am posting this using that connection, using Internet Explorer. It's ...
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How do I setup a local DNS server on Mac OS X 10.7 (Lion)?

I had some serious lag to resolve website address and sometimes things simply wouldn’t load; pages keep loading for 5+ minutes without even a timeout error. So I had setup a local DNS server/cache ...
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43 views

Windows 8.1 manual DNS on a per wifi network basis? [duplicate]

How to configure Windows 8.1 with a specific manual DNS that is only valid for the current WiFi network? The setting seems to associate with the WiFi card, not the network, resulting in a laptop that ...
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2answers
120 views

Guest network connected to internet fine, but primary network did not work

Hope the expert here can help me. I tried to connect to my primary network it, it indicated as connected, whether i try to go to any website , a little "!" will appear next to the signal bars. When ...
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How can I add static DNS entry in Debian and block some sites?

OK I'm admin noob. Is there a way for adding static DNS entry? I already tried to modify /etc/hosts file but without success. Here is my hosts file: 127.0.0.1 localhost 127.0.1.1 hitsu ...
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33 views

Why can't my Windows devices browse but my iOS devices can browse?

All Windows devices on our wireless home network are no longer able to browse the internet. The choice of browser does not matter. All iOS devices can still browse without problems. I have tried the ...
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2answers
39 views

A very Strange DNS 1 & DNS 2 Entry

I have an issue I've never seen before, 5 computers on network. All have access to the server via remote desktop. Only one has Internet access. Tried setting ips static on the ones not connecting to ...
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4k views

How to setup intranet DNS to resolve some sub domain address and forwards others?

I have a domain names (MyDomain.com) which has a number of subdomains (subs1, subs2, subs3 and subs4) On my local network I have 2 servers running that host subs1 and subs2. I also have a server ...
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22 views

Should I disable Netbios over TCP/IP for printing throught Samba+cups?

I have a domain with 100+ machine which are reparted on two IP ranges. On this moment, computers are using netBIOS over TCP/IP or SMB over TCP/IP. It seem that two requests are send ...
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2answers
34 views

How to restore my default DNS?

I hanged my DNS servers to 8.8.8.8 in order to fix my web browsing (it worked). My coworkers want me to change it back, but i didn't save it! Is there any way to restore my old dns settings? I'm ...
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65 views

Only My Computer Won't Connect to a Specific IP

I'm having issues connecting to our Web Server IP from my computer. This seems to be isolated to my computer as I'm able to access it from every other machine I attempt just fine. By not connect, I ...
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1answer
24 views

wireshark save capture directly to file with filter

I am looking to have a long-term packet capture running to monitor DNS requests on my machine. I generally use wireshark for network monitoring, but since I am only interested in DNS packets, and over ...
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16 views

On my computer, forward specific third-party domains to my own subdomain

I need to redirect from all Google domains to a specific subdomain on my local computer. I am using Windows 8.1 and Mac OS X 10.10. I cannot do this by adding a firewall rule because I use my computer ...
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5answers
24k views

How do I check what DNS server I'm using (on Mac OS X)

In Mac OS X, how do I check what DNS server I'm currently using (preferably a command line solution)? System Preferences > Network shows 192.168.1.1, which is my router's address and not the real ...
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Strange networking issue in Linux

My problem is hard to explain. I can’t open some sites. For example some sites provided by Google. I can open the Google search engine, however I can’t open YouTube, the download page for Chrome (the ...
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example.com cannot be resolved to an IP Address

since this morning I can't connect anymore to my website. I'm on a centos dedicated server with apache. I think that there's a problem with DNS, this is the message I get from a webtool: example.com ...
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The DNS server isn't responding

I'm having connectivity issues. I randomly become unable to use my connection. When I try to use the Windows troubleshooting tool, I get the following message: I'm using an Asus router. There are ...
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52 views

How to change DNS on a minimal networking setup

How can I replace my DNS? I am not using a network manager, except for systemd-networkd and wpa_supplicant for wireless, with wpa_cli. I'm on Arch Linux, if it matters. Although I can add DNS to my ...
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168 views

Windows 7 DNS not working (nslookup IS working; ping -4 name.com NOT working)

nslookup IS working; ping -4 name.com NOT working The most obvious symptom of this problem is that nslookup IS working, while ping -4 name.com is NOT working. That's because nslookup contains its ...
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3answers
7k views

Failover two IP addresses and one DNS record

My mail server has two WAN interfaces and I need to set up one DNS A record for my Exchange clients. In case of connection failure of one interface I wish to use the other interface, but how to set up ...
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25 views

change IP when a CNAME is used

I want to set 96.7.41.139 as IP address of download.microsoft.com I checked this post: http://serverfault.com/questions/452268/hosts-file-ignored-how-to-troubleshoot and set hosts as below. ...