Questions tagged [dns]

Domain Name System (DNS) is a service that provides the resolution of host names to IP addresses. Use the [tag:dns] tag when you are troubleshooting DNS issues, configuring a DNS resolver or server, or are trying to understand DNS's involvement in your situation.

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3
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2answers
3k views

Different domains for multiple VM's on host with one WAN IP

I've got only one WAN IP address bound to KVM host system and multiple VM's with internal IP's, say, 10.0.0.1/28. On the other hand I have multiple domain names bound to host system WAN IP. The ...
7
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3answers
21k views

debian, problem with DNS

When I type in "google.com," firefox tells me that the server is not found. When I type in the IP address of google, it works just fine. I was playing with this computer at another place and it didn'...
3
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2answers
1k views

Verbose DNS query to see DNS query order?

I typically determine the IP of a host by doing: $ host -t A example.com. Is there a more verbose version of this that tells me what's happening in the background, specifically the order of what is ...
1
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1answer
711 views

Using google DNS in netcfg

how can I set up my netcfg profiles to use the google DNS servers? I've tried IP = 'dhcp' DNS = '8.8.8.8' but that didn't cut it.
2
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1answer
7k views

DNS Issues on RHEL 6

I'm experiencing some DNS issues on a new RHEL 6 virtual machine. Ping is working fine to an IP, but the machine is unable to resolve any names. I've tried adding Google's DNS servers (8.8.8.8 and 8.8....
9
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4answers
29k views

Reverse DNS lookups slowing down network operations on LAN

Environment My LAN setup is quite basic: A router connected to the ISP's modem and the internet My development pc directly connected to the router The router provides DHCP but does not run its own ...
8
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2answers
22k views

How to get networkmanager to configure domain specific name servers with openresolv + dnsmasq

I often connect to multiple network simultaneously. Each of these networks provide nameserver configuration via dhcp. E.g. Network 1: (eth0): domain company1.corp # nameserver 192.168.0.253 ...
9
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2answers
14k views

How can I reset or lower the serial used in BIND DNS server's SOA record?

I use BIND as my DNS server at home. For my Start Of Authority (SOA record) I always use a serial in the recommended format YYYYMMDD## where ## is the counter for changes on that day. ...
2
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2answers
1k views

dig returns different IP address when dropping the “www.” from domain name

I have performed a dig on my domain name used on my site and I seem to be getting different results when I drop the "www." from the lookup. I am concerned this is causing me issues within my ...
3
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2answers
2k views

configure dhcp client without accepting nameserver entries

I am trying to configre my openSuSE 12.1 machine as DHCP client, but especially do not want it to set the name server entries to /etc/resolv.conf it has got from DHCP server. Can I do it on the ...
4
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2answers
2k views

Using a secondary DNS when lookup fails in primary?

I use a VPN to connect my development machine to my school's CS dept. The development machine is Ubuntu as we do C programming in Unix. I used vpnc to do that. The school uses some DNS entries that ...
2
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2answers
10k views

Force to use specific DNS provider at network

OpenDNS offers a quite simple way for internet filtering by categories. Of course who could get the correct IP address can easily bypass the filter but it would be enough for my expectations. The ...
2
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2answers
3k views

Domain resolve problem with stock Debian

I have a simple install with Debian as a guest in Virtualbox. I installed the resolvconf package. The resolv.conf file is this: # Dynamic resolv.conf(5) file for glibc resolver(3) generated by ...
2
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4answers
2k views

Can someone recommend a Linux Distro for purposes of just running a DNS?

I'm looking for an easy to setup Linux distro for just running a DNS server (and nothing else) with something easy to setup like DNSMasq. At home I run OpenWRT with DNSMasq on my Router, and at work ...
3
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2answers
19k views

Clearing DNS Cache in Linux

I work on Linux on my laptop, I could not access a particular website using the URL, so I used sudo /etc/init.d/nscd restart in order to clear the DNS cache, but the URL is still throws 'Server Not ...
1
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1answer
753 views

resolv.conf + PXE server + kickstart files

I use PXE server in order to download kickstart and to install Linux. After installation I saw that /etc/resolv.conf was created with the IP of the PXE server. Why there is PXE server IP address in ...
0
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2answers
2k views

How to configure DNS on Fedora 16?

I use Fedora 16 and I'm trying to configure the DNS but it is not working. I followed this tutorial: http://www.server-world.info/en/note?os=Fedora_16&p=dns&f=1 My IP is 172.31.50.86, I ...
32
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2answers
59k views

curl --resolve appears to do nothing

The --help output for curl lists a --resolve option, which states --resolve <host:port:address> Force resolve of HOST:PORT to ADDRESS I'm not having any luck getting it to work though. The ...
1
vote
1answer
1k views

pxe boot: problems with /etc/resolv.conf

I'm pxe booting a node (Ubuntu 11.10). The image of the node is created with debootstrap. Works great. Everything is loaded. When I login to the node I see that /etc/resolv.conf is empty. In the base ...
3
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2answers
2k views

How can I Forward a subDomain to a specific port?

My apologies if this has been asked before. I haven't found an adequate solution so... yeah. When a specific domain, "example.com" is accessed, I want it to act normally. In other words, it should go ...
6
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5answers
10k views

/etc/resolv.conf changes during reboot

My ISP asked me to use custom nameserver settings. I have placed these in /etc/resolv.conf. Unfortunately, every time I reboot the computer, the contents of this file is changed. To connect to the ...
4
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6answers
1k views

Find my computer on a LAN network

Let's say that I have a computer plugged in to a local network using a dhcp connection, so it will get a different IP every time. Is there a way to find this computer (so the IP) from a different ...
6
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3answers
19k views

How to create a custom dynamic DNS solution?

You all probably know commercial dynamic DNS providers like dyndns.org or no-ip.com. But how to create a similar service for just a handful of machines? What server software would be best suited for ...
231
votes
12answers
628k views

What DNS servers am I using?

How can I check which DNS server am I using (in Linux)? I am using network manager and a wired connection to my university's LAN. (I am trying to find out why my domain doesn't get resolved)
29
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3answers
88k views

How to read the local DNS cache contents?

I know that on Windows I can issue ipconfig /displaydns and I see the local DNS's cache content. How can I list the DNS's cache content in Linux? I would like to get as much as cross-distro solution ...
7
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5answers
15k views

How to overcome libc resolver limitation of maximum 3 nameservers?

Suppose I work in environment with number of domain changes and slow propagation. I want to test domain configuration immediately after setting change but the propagation is slow. So I want to add ...
5
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2answers
4k views

Can't resolve CentOS 6.2 server by name from OS X

I just set up a new AirPort Extreme and CentOS 6.2 server - the server is meant to be a general-purpose storage machine, and so I've set up Samba and Avahi on it. I can easily access the server by IP ...
0
votes
1answer
17k views

How to create reverse-lookup file for BIND that points to some networks?

I am try to create a reverse-lookup file in BIND, but I need it to point to many networks not just one. I have three networks that connected to the same bind server, 192.168.3 and 192.168.4 and 192....
2
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1answer
285 views

How do I use the OpenDNS servers for wlan0 in Aptosid?

How do I use the OpenDNS servers for wireless networks in Aptosid? All the methods I've found are either specific to other distros, specific to eth0 or they just don't work with Aptosid or wpa_gui.
7
votes
5answers
49k views

Name resolution doesn't work, but nslookup does

I am having a very strange problem with my installation of Solaris 11. DNS resolution just won't work, but strangely enough, nslookup does and connectivity is fine: root@solarisxyz:~# ping ...
15
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2answers
26k views

What is a “recursive DNS query”? [closed]

Can someone explain in short what "recursive DNS query" means and how it can be considered bad?
18
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3answers
21k views

Is there a way to get the Public DNS address of an instance?

I have a project wherein I need to update configuration files each time an EC2 instance is booted with the Public DNS address of the current instance. I'll be using Perl or Sed for this, so that's ...
11
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3answers
1k views

Two commands, one pipeline

I need these two commands to be one (so I can pipe them further): dig +nottlid -t any bix.hu | egrep -v "^;;|^;|^$" | sort dig +nottlid -t any www.bix.hu | egrep -v "^;;|^;|^$" | sort I mean I need ...
2
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1answer
2k views

How to configure a catch-all CNAME on Ubuntu Linux using BIND 9

I'm trying to set up APE server on my local system. I'm using Ubuntu and BIND and I need to set up a catch-all CNAME record. What would be required for this?
17
votes
1answer
26k views

How to let `named` (bind9) forward certain domains to a different nameserver?

In dnsmasq, it's possible to forward domains to different nameservers. How can I do that in named? server=/foo.com/10.0.10.1 server=/vpn.foo.com/8.8.8.8
4
votes
1answer
5k views

Skype connects to the internet but all my web browsers can't on Fedora 15

I've recently taken the plunge and gone from Ubuntu to Fedora. When connected to my wireless network my web browsers can't access any sites although skype works fine. I don't have the problem when ...
2
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2answers
3k views

Virtual hosting a tomcat webapp in Apache on RHEL 5.0 [closed]

I am in a hosting fix! I have developed a web app for my organisation that allows sharing, interacting, etc. I want to DEPLOY IT ON LAN. BUT... I don't want the end user to type: 10.21.34.56:8080/...
393
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24answers
546k views

How can I resolve a hostname to an IP address in a Bash script?

What's the most concise way to resolve a hostname to an IP address in a Bash script? I'm using Arch Linux.
2
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2answers
607 views

How is my domainname determined?

If I look into /etc/hostname/ I can see the hostname of my device. This is however not the name that shows up when I use nslookup on our network. How do I tell the DNS server which name it should use? ...
6
votes
3answers
4k views

/etc/hosts file syntax. Is it possible to set one IP for a zone?

I would like to set one IP for a zone (livejournal.com) currently I am having to directly type the subdomains like: 11.11.11.11 sub1.livejournal.com 11.11.11.11 sub2.livejournal.com 11.11.11.11 sub3....
1
vote
1answer
244 views

Can't open transferred website from old server to new server

I have 2 dedicated servers both running CentOS 5.3/Plesk 10. I've transferred a website (domain) from old server to a new one via Plesk migration manager and the website (domain) shows in the domain ...
3
votes
2answers
1k views

Local DNS rewrite from host to host for web requests

Is there some de-facto way for rewriting certain hostnames to other ones? Something like /etc/hosts for host to host instead of ip to host. Is this possible or should I create a local dns cname for ...
1
vote
2answers
5k views

How can I update my dynamic DNS under OpenWRT?

I have an OpenWrt 10.03, and I need to update my dynamic DNS account (e.g., OpenDNS or DYNDNS) when my IP changes. How can I do this from the terminal?
2
votes
1answer
1k views

Hostname to fully qualified doman name expansion

Is it possible to configure where the system will look for the machine if I enter just a short domain name hostname? I work in a grid environment where the machines are many and spread across ...
2
votes
1answer
220 views

Do rndc keys expire after a year?

Yesterday, I noticed an error in a bind zone file, and after correcting it, I tried to restart bind9, but the service refused to stop, displaying this error: rndc: connect failed: 127.0.0.1#953: ...
1
vote
2answers
616 views

DNSSEC in the root zone? How to use it?

I'm using Fedora for desktop use and I: yum -y install caching-nameserver service named restart chkconfig --level 5 named on on it, and set the nameserver to 127.0.0.1. If I: dig google.com | grep ...
2
votes
2answers
1k views

BIND Server problem in Fedora

I am install the Bind Server in Fedora Linux.I configured the named.conf file.However, When I run "service named start" command,I am receive the following error. starting named: /usr/sbin/named: ...
2
votes
2answers
570 views

Working DNS-DHCP combo for LAN

Can anyone recommend a working DNS-DHCP combo for a small mixed-platform LAN? Preferably one where hosts can be assigned IP addresses and/or names with a web-GUI. The typical DHCP package on Linux ...
4
votes
3answers
2k views

Firefox and Thunderbird cannot resolve host names - anything else can

One night my firefox just started showing "Server not found" for all websites (i.e. "Firefox can't find the server at www.mozilla.com."). I noticed that it can find websites if make an entry in the /...
2
votes
2answers
1k views

OpenWrt ssh host identification with dyndns

If i ssh to my remote OpenWrt router ["via DynDNS"] I get the message @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ Ok, i delete the old line in ~/.ssh/known_hosts, add the new one ...