Domain Name System (DNS) is a service that provides the resolution of host names to IP addresses.
0
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1answer
17 views
Ubuntu 12.04 resolver setup
When investigating how the DNS setup of my os (Ubuntu 12.04) works, I came to some questions I could not really find on the web.
So what I observed was, that ubuntu uses Dnsmasq as a DNS resolver.
...
2
votes
1answer
37 views
How can I be sure that access to my home server from my home network is not done via Internet?
As advised in this question: Network file-sharing between Linux and Android, I have decided to use ownCloud to store files on my home cloud server.
However, my needs have changed a bit. I want to be ...
4
votes
2answers
46 views
Why `host` and `nslookup` on Solaris 10 resolves hostnames while `ping` and `telnet` does not?
/etc/resolv.conf contains a nameserver that is alive (as reported by the ping command)
host or nslookup is able to resolve google.com
$ host google.com
google.com has address 74.125.228.3
google.com ...
1
vote
1answer
38 views
Configuring DNS resolver failover timeout
We have all of our systems set up to do internal DNS to a local name server and a secondary name server so that in the event the local DNS server is down they should go over the WAN to the secondary ...
2
votes
1answer
77 views
Ubuntu server cannot access the Internet: appears DNS related
This is a Drupal website running Ubuntu 12.04 LTS on Linode. The server is just a website. It is not a DNS server or anything else.
Here are my issues. It seems they are all related to DNS issues. ...
3
votes
2answers
44 views
Looking up a local domain name without specifying the local DNS server
I've set up a local domain name by creating a zone (by following the steps in this tutorial).
Why I look the domain using dig, I get the right results when using the following command:
dig ...
0
votes
1answer
52 views
Apache subdomain can not be resolved
<VirtualHost *:80>
ServerAdmin webmaster@localhost
ServerName domain.no-ip.org
ServerAlias www.domain.no-ip.org
DocumentRoot /var/www/main
ErrorLog ...
0
votes
1answer
105 views
Postfix: 554 5.7.1 Relay Access Denied
My Problem is this: I can send E-Mails from my E-Mail (evolutio@lars-dev.de) to my other Emails like @gmail @web @gmx ...
But when I try to send a E-Mail from GMail to evolutio@lars-dev.de I have the ...
1
vote
0answers
42 views
Can't get BIND and NS to work properly [closed]
I just got myself an unmanaged Dedicated VPS from OVH and I don't have a prior experience of setting up servers or DNS servers but I followed a couple of tuts and installed webmin and created NS Zones ...
3
votes
0answers
94 views
Why is dnsmasq putting my router IP in /etc/resolv.conf instead of 127.0.0.1?
I'm having DNS resolution issues in various contexts which appear to trace back to my networking configuration.
I'm running just the netmasq-base installation of netmasq on two Linux installations ...
3
votes
1answer
72 views
Why is resolv.conf spelled without the 'e'? [duplicate]
A curiosity question which google has been unable to answer for me:
Why is 'resolv.conf' spelled without the trailing 'e'? I'm sure there's a valid historical reason going back to the early days of ...
1
vote
2answers
221 views
Fedora 18: can't resolve hosts
My Fedora 18 machine is having problems with resolving hosts:
Could not resolve host: ...; No address associated with hostname]
HTTP error on [https://lon.auth.api.rackspacecloud.com/v2.0/tokens], ...
2
votes
2answers
86 views
I want to expose “easy” URL's for machines on a home network. Is custom DNS/BIND the answer?
I recently convinced my room mates to cut the cord and go cable free, and they've found it pretty great so far. I'm in the process of setting up a pretty sweet, mostly automated home theater setup ...
1
vote
1answer
49 views
How can I configure dnsmasq to resolve based on the source of the request?
I'm trying to get SiriProxy to work whenever I'm connected to my home network by setting up dnsmasq on my router running the Tomato firmware to send all requests to the Apple Siri server to my local ...
0
votes
1answer
116 views
perform ping test to change dns
I wrote this script to check if my dns server works fine or not, and if not change it. but it gives out error ./dns-ping.sh: line 15: ((: 3 < : syntax error: operand expected (error token is "< ...
2
votes
1answer
90 views
Could not resolve host error
I'm using Arch Linux and I have a dynamic ip address with the use of dhcpcd. I can access websites through the google chrome but the problem is that I get 'could not resolve host' error when I run ...
4
votes
4answers
161 views
Host lookup that respects /etc/hosts
Utilities like host and dig let you see the IP address corresponding to the host name.
There is also the getent utility that can be used to query /etc/hosts or other NSS databases.
I am looking for ...
2
votes
3answers
40 views
Can DNS identify hostnames dynamically if they're statically configured?
I've got a small environment of ~40 VMs with static IPs on 12 servers, it would be dandy if I could refer to each VM by name. We have a lot of VMs come and go, so maintaining one static list is a ...
2
votes
0answers
237 views
Ubuntu: How to configure DNS servers in /etc/network/interfaces correctly for resolvconf?
All examples I have seen of configurations (/etc/network/interfaces) showed that you configure an interface and then underneath that gave the dns-* lines such as:
auto eth0
iface eth0 inet static
...
1
vote
1answer
139 views
How to setup whatever.localhost.dev to resolve into 127.0.0.1 on Ubuntu 12.04?
I'm running Ubunut 12.04
I want *localhost.dev to point to 127.0.0.1.
Ubuntu 12.04 comes with dnsmasq-base installed with network-manager. But there is no /etc/dnsmasq.conf.
So I installed the ...
1
vote
2answers
53 views
How do Apache2 VirtualHosts get resolved?
As I understand it, when you request a url from a website using your browser, it asks the DNS server that the OS is pointing at if it knows the ip address that relates to the dns-name of the server; ...
2
votes
1answer
102 views
Firefox unable to access domains defined in /etc/hosts if Network Manager is disconnected from a network
For developing web sites, I define test domains in /etc/hosts :
127.0.0.1 example.org
I can then access example.org in the browsers.
However I when the Network Manager is not connected to any ...
0
votes
1answer
357 views
Bind DNS rate-limit and values for responses-per-second and window
In my DNS server's named.conf I see
rate-limit {
responses-per-second 5;
window 5;
};
What does this actually mean? And can it cause DNS clients problems?
Is this ...
1
vote
1answer
81 views
Method to perform DNS lookup step very quickly during wget
When I download any document from internet using wget. It shows maximum amount of time consumed in getaddrinfo().
I know getaddrinfo() used for DNS lookup.
Tell me any method, so that this time is ...
2
votes
2answers
2k views
How to flush local DNS cache in CentOS
(I am aware that googling this question gives me tons of stuff, but literally none worked) I'm looking for a way to flush the local DNS cache on a Centos 6 system, it is not running any DNS server or ...
1
vote
1answer
150 views
No DNS on Debian wifi after unplugging the DNS cable
I have installed wheezy Release Candidate 1 to my old laptop (Benq Joybook A52) right now, and I have some problem with my wireless card (Atheros 5006). It can actually see the wireless networks, I ...
1
vote
0answers
113 views
Setup of DNS zone with secure zone updates
OS: Linux Mint
Can someone please details the steps or point to the right material to achieve the below.
run a dns server with a zone for a local domain?
able to add dynamic entries to the dns zone ...
0
votes
2answers
90 views
How to detect particular system call called or not in a whole workflow?
EDIT No. 1
My task is mirroring , i.e., copying updated data from master server to all mirrors, by using rsync and rsh. But during rsync and rsh, I found some delay. My thinking is , the reason for ...
2
votes
1answer
107 views
Incoming/Outgoing seperation for VPN
My situation is that I want all my outgoing connections from my Debian server to pass through a commercial VPN service I've subscribed to, but I still want to run public-accessible services on this ...
0
votes
1answer
107 views
Server returning 'Not Found' for “www.host.com” but not “host.com”
My server is returning the correct paths for all of my domains as long as they are not prefixed with www. The following is one of my domains in it's simplest form:
<VirtualHost *:80>
...
1
vote
1answer
274 views
Command/scripts to check the Reverse DNS Lookup time
I am working on a project in which one master communicates with numbers of slaves. For that it has to make connection with hosts in network. But sometimes it hangs.
I think that the reason behind is ...
2
votes
1answer
77 views
DNS cache for wget
I want wget to use a global DNS cache, not just in memory for the current instance.
The wget manual mentions
--no-dns-cache
Turn off caching of DNS lookups. Normally, Wget remembers the IP ...
1
vote
0answers
555 views
centos 6, hostname won't resolve, dns issue, loop detected
I've searched everywhere and tried all the suggestions that I've seen, but I just can't get this to work now (it was working before). This is the first time I've ever installed a test server that I ...
0
votes
2answers
115 views
How to make dns resolve faster
I changed name server of one domain.
Then I flush dns
root@host [~]# /etc/init.d/named restart
Stopping named: [ OK ]
Starting named: ...
2
votes
1answer
354 views
“Fake” DNS for a single host
I am running a bind9 dns server at my home network, serving for all my internal servers in my domain local / 192.168.x.x - one of those, extweb.local 192.168.1.33 is also visible from the internet as ...
1
vote
1answer
188 views
Why is sendmail appending my hostname to unknown destination domain?
I am testing the handling of mail bouncing. When I send a test email to a bad domain, for example: eric@blahblahfail.org, I get the following error in my log:
SYSERR(root): ...
4
votes
1answer
88 views
Alternative to DNS for internal servers
I am setting up my first network at work. All the servers are running CentOS 6.3 and have statically assigned IP addresses.
For example:
server1 192.168.0.101
server2 192.168.0.102
I want to be ...
0
votes
2answers
225 views
How to test DNS speed?
I am using google open DNS now.
I want to test it's speed. How can I?
I can ping and see that it gets faster. I need some faster way.
1
vote
2answers
120 views
Name Lookup takes a long time
I was using a script that uses curl. Quite often curl fail.
The error is name lookup timed out
I tried to ping google.com and and other sites. Indeed dns (or whatever do the translation from domain ...
2
votes
2answers
106 views
Rebuilding sendmail on FreeBSD application server after adding new activedirectory domain controller to network
In the process of adding a new ActiveDirectory domain controller to our network, we decided to rename the domain from "domain.local" to "domain.priv." I scoured all parts of our application server for ...
1
vote
1answer
130 views
Adding multiple sites at once to forward-zone of Unbound?
The usual format for Unbound forward-zone is
forward-zone:
name: "imap.gmail.com"
forward-addr: 8.8.8.8 #googleDNS
forward-addr: 8.8.4.4 #googleDNS
for example. Is it possible to add multiple ...
0
votes
1answer
158 views
Opendns setup failed. How to fix it?
I have problems trying to configure OpenDNS. I have contacted OpenDNS support but they did not answer. I cannot access websites like Twitter and Facebook.
I tried welcome.opendns.com (did not ...
4
votes
1answer
400 views
Configuring ssh fingerprints on dns to replace known_hosts fails
The SSHFP records were generated on the ssh server as follows and then added to the zone in bind:
$ ssh-keygen -r www.test.us.
www.test.us. IN SSHFP 1 1 ad04dfaf343a93beeb939eed1612168f7eadbed7
...
2
votes
2answers
3k views
understanding DNS in ubuntu 12.04
I have Ubuntu 12.04 installed, and also use unbound and usually use openDNS as my DNS server.
When I run dig google.com say I get SERVER: 127.0.0.1#53(127.0.0.1). What exactly is this thing listening ...
2
votes
2answers
314 views
In a recursive dns query what happens ttl = 0?
in name resolution (current version of bind), what happens when a recursive answer reaches ttl 0 on the return trip?
1
vote
4answers
527 views
Make nslookup use specific interface
On my computer I have two network cards. Both are using different Internet Providers service.
Both Internet service provider have different DNS server and their IP address are known to me.
I want to ...
1
vote
1answer
422 views
How to query RIPE database on the command line?
Using the stock whois (on Fedora) I can easily get information for an IP adress:
$ whois SOME_IP
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is ...
2
votes
1answer
522 views
Static IP address shifting to 192.168.1.251
I have a system with a static IP address of 192.168.1.150. I configured /etc/network/interfaces manually (i.e. without using NetworkManager.) It is a web server hosting three sites. I am having ...
0
votes
0answers
278 views
How do I flush local DNS cache on my machine? [closed]
I've found that reloading the nscd service (/etc/init.d/nscd reload) should do this. However, I don't have a nscd file in my /etc/init.d directory, so how do I perform this?
9
votes
1answer
510 views
How can I override the /etc/hosts file at user level? [duplicate]
Possible Duplicate:
Can I create a user-specific hosts file to complement /etc/hosts?
In short: I would like to know if it is possible to get a ~/hosts file that could override the ...
