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

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VM DNS ISSUE with Host machine but not VM client

I am running Oracle VirtualBox VM. DNS works Fine on the host machine but once i start up a VM the Host losses ability to communicate with the DNS.The VM meanwhile has no connection issues. I have ...
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68 views

Difference between DNS and /etc/hosts in name resolving during an HTTPS request

My question is: what is the difference between DNS and the static resolution method based on /etc/hosts in name resolving during an HTTPS connection? In order to connect to a site using https the ...
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121 views

Best way to block websites with PowerDNS?

I'm working on a DNS filtering system for my household. I have a blacklist from MESD with a list of both IPs and domains, but am not sure how to block them with the blacklist. I thought about using ...
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137 views

Simplest way to verify if a given string is a valid FQDN name?

I need to supply either '-name' or '-sname' when starting an Erlang VM depending on whether the given string is a fully qualified name (FQDN) or not. What would be the quickest and ...
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18 views

Is it possible that after changing of DNS A record site is loaded from new IP, but scripts from old one?

Is it possible that after changing of DNS A record, site content is loaded from new IP, but scripts, css or images from old one? i.e. that web page is requested from single domain name, but loaded ...
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19 views

DNS Resolution in case of two network interfaces

I have a computer connected to one Ethernet card attached to my internal network and another one attached to USB Modem (3G), Both interfaces can reach Internet but my Ethernet network is behind a ...
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2answers
211 views

I need to flush dns again and again to make the sites load

I'm facing a problem where when I visit a site Google Chrome says to me:- "This web page is not available" This happens for many sites. I've searched on Google and have found a fix. If I run the ...
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67 views

Permission issue on some files on a NAS D-link DNS 325

I have some permission issue with folders on my NAS, and I have no idea how to get the reset permission for these files. I'm having a D-link DNS-325. My volume is mounted using afp, connected with a ...
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63 views

What would cause a computer to fail to make any high level network connections?

I thought it could not hurt to ask while I am having a slow work day. I have a computer that is running Windows 7 64-bit Home Premium. Originally I was going to do a repair install of the Windows ...
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56 views

Do simple home wifi routers have DNS capabilities?

I have a Medialink MWN-WAPR300N and I would like to add the name of my laptop to it so it can be accessed on the home network via the name and not just the IP. I need to do that because I am working ...
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53 views

SBS2011 & DNS issue

I inherited a fully working site with SBS2011. Nothing special about the setup, has been working for a few years. The ISP changed the external IP to the site without telling us after a fault. We ...
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1answer
14 views

Editing DNS IP on Current network

I have on our network a Linux intranet box that we had to move to another location, this is on a server 2008 Domain Controlled net. My predecessor left me 0 information on the network.. I have done an ...
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206 views

Windows 2012 Domain Controller NETLOGON error

We have Sonicwall firewall user authentication System active since last two months. We have Windows 2012 Active directory server setup with around 1400 user account created. These accounts were ...
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50 views

What could be causing imac to not access certain sites?

My iMac has security off, firewall, antivirus etc. Yet somehow there are a few websites it cannot access that my macbook can. On the same network. Tried different browsers. Checked the hosts file. ...
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2answers
242 views

Flush Chrome and Firefox DNS cache from command line?

Occasionally, I need to do a scorched Earth cleansing of my local DNS cachi. The most common scenario for this was that I was using OpenDNS, and when a name would fail to resolve (it was a hostname ...
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65 views

Timeout occuured during validation - DNS

Please I need help on an external DNS issue. Current Setup: We have an existing External DNS server that only serves external queries and not internal queries, so no ADDS on it but just DNS role. All ...
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1answer
29 views

BIND9 on CentOS issue querying from Windows

I've just built a CentOS 6 server and configured BIND9 (named) to run. Zone files are configured and NSLOOKUP, DIG and HOST are all working from the CentOS box. When I move to my Windows PC, nslookup ...
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1answer
75 views

DD-WRT url forwarding like port forwarding?

I have a ddwrt router and I would like the following behavior. say I own the domain example.com and like wise, I own *.example.com. Say I have my dns set to forward all requests for example.com or ...
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2answers
164 views

BIND DNS server (Windows) - Unable to access my local domain from other computers on LAN

I have a BIND DNS server running on my Windows 7 development machine and I'm serving pages with WAMPSERVER. My ideia is to develop some tools (in PHP) for my intranet at work and I want them to be ...
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1answer
89 views

Why do DNS service discovery queries for private networks get sent to my ISP?

I was doing some testing lately that involved re-ruoting (proxying) regular DNS queries on a personal Mac OS X machine through my software and back to the DNS server of my ISP. I had the opportunity ...
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54 views

Not using router's DNS

I ran GRC's "DNS Benchmark" software on my Windows 7 machine, and it says: System has only ONE (router based) nameserver configured, which shows up as one of the slower one in the test. I have ...
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71 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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66 views

Resolve a domain name with /etc/hosts only if in local network

I would like to link mydomain.com to 192.168.1.X only if I'm connected to my local network. Otherwise, I would like to let the DNS servers resolve it (if I'm outside my network). Now, when I do a ...
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31 views

Multiple Domains. Multiple Server. One DNS

I want to host multiple domains of my clients on multiple servers. For example 10 Domains on ServerA, 10 Domains on ServerB etc. So basicly, I want all my clients to have "ns1.main.com" and ...
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86 views

I switched to comodo DNS and I get a .local domain prompt

I switched to Comodo DNS today because Norton DNS seems to be completely shut off and the website has not been accessible in days. Comodo DNS works fine but every time I log into my computer it says ...
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48 views

What is better? Changing Nameservers or A records? [closed]

I have my hosting on Godaddy and domain on another provider. So I was thinking which would be a better option to point the domain to Godaddy hosting Change the name server to that of godaddy. Change ...
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182 views

Using dnsspoof to provide fake DNS results in offline LAN

I have a local network consisting of two virtual machines (for testing purposes). Both run Debians. I'll refer to them as A and B. My goal is to have A act as 'whole of Internet' for B (for HTTP ...
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45 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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106 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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78 views

mysql, ssh, rsync, git hang with dns name but not IP address on Ubuntu 12.04

Certain network based programs recently (problem did not exist a couple of weeks ago) started hanging for me. Some that I've experienced the problem with are mysql, ssh, rsync, and git. My first ...
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380 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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63 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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73 views

Why is whois data not available for some sites?

I am trying to check the whois details for a site uq.oz.au and not able to find any data. I have tried multiple whois engines. Could someone let me know why this is the case? Shouldn't registration ...
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1answer
67 views

Why is DNS the first thing to go when my connection is busy?

It seems like whenever I have reached the apparent limits of my download/upload rate (or just been throttled), the first thing that will start to slow or timeout completely is DNS lookups. Normally I ...
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42 views

Ask dnsmasq the hostname used to find to an IP address

I know I can find a DNS name from an IP address by using a reverse translation DNS query. But that just gives me a DNS name for that IP. Instead, I'd like to find the DNS name that was used to find ...
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175 views

How Proxy DNS works? Can they capture my data?

Update: I've read this article to understand how Proxy DNS works, but still not sure if they can capture my data or not? How can some services apply HTTP proxy by modifying DNS server? I'm using ...
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849 views

Should I use my ISP DNS or Google's? [closed]

I'm experiencing an annoying problem. Randomly, some websites don't load for about 30 seconds. I'm reading the news and suddenly I start getting a server not found error. At the same time other ...
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1answer
48 views

configure my router to translate “example.com” to a website's IP

Is possible to confingure my router to translate certain domain names ex:"example.com" to a specified website's IP ex:"173.194.32.23" ??? I have a Sitecom Modem Router N300, and there are a lot of ...
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23 views

name server IP vs web server IP

I'm doing a course on an introduction to networks and I'm struggling to visualise certain aspects of the domain name system database. (if that is worded correctly?) For example, if you perform ...
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26 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 ...
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140 views

DNS server cannot get DNSSEC information

I did the netalyzr test which checks some ports and network configs. The result was strange. It contained a problem with DNSSEC: Only some DNS root server instances returned proper DNSSEC ...
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2answers
401 views

Wordy IP for internal devices

Hi I would like to have a ip to connect to devices on my network at home, however I don't want to have to remember lots of numbers instead I would like to have address that uses words. For example I ...
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1answer
57 views

Set Search Domains from Terminal

Is there a file that I can view/edit from terminal that has a list of the search domains? I know it's possible to set these up from the DNS tab in the Network preferences, but is there a way to do it ...
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2answers
182 views

Wildcard CNAME record complications?

So we're using Route53 and I wanted to set up a wildcard CNAME record to redirect any unmatched subdomains to our main domain. I tried it out and everything looks like it worked okay, but when I told ...
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40 views

Direct domain to IP and port?

So, possibly a silly question but I'm running apache on port 8000 and I want to add a DNS A record to point to the IP. However I need to make it point to port 8000 instead of the default 80. So is ...
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69 views

Can flush DNS command resolve internet speeds?

Was assisting a user that had been downloading 8 movies from iTunes. Her speed was sitting at .06 mbps down with ethernet. Restart and power cycle got her up to 2.36 mbps down. 0% packet loss. I ...
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Simple DNS Plus - Configuration

I have a domain: mydomain.com I use to use: @ A 213.0.0.0(Public IP), in GoDaddies DNS Zone, instead of nameservers. I removed that and added two hosts, ns1.mydomain.com and ns2.mydomain.com ...
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15 views

How to make LAN hostnames available to my coLinux?

My Windows PC is on a LAN that uses DHCP. All configurations including IP address, gateway, and DNS are distributed by the DHCP server thus cannot be guaranteed to stay the same each time my PC is ...
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112 views

How is the dotted decimal IP address “1.2.3.4.5” interpreted and resolved?

The Apache Mina Ftpserver project has a unit test that checks that the IP address 1.2.3.4.5 fails to be resolved by the OS's name resolution. Specifically, the expected result of: ...
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65 views

Apparent IP doesn't take me to website

I noticed that sometimes, when ping requesting a website, I receive an IP Address that doesn't in fact take me to that domain name. It instead takes me to the default server page. For example, if I ...