Domain Name System (DNS) is a service that provides the resolution of host names to IP addresses.
1
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0answers
19 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
54 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 ...
0
votes
0answers
21 views
How do I setup DNS names and static IPs for an Ubuntu virtualbox? [migrated]
I have Ubuntu installed on VirtualBox, on top of a Windows 8 host. How can I setup a static IP and DNS name for this virtual machine that other virtual machines will see?
2
votes
1answer
64 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
113 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
79 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
33 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
79 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
67 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
145 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
39 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
112 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
110 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
48 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
89 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
0answers
293 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
67 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
1k 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
124 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
91 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
82 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
93 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
98 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
256 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
68 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
392 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
101 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
240 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
155 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
77 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
194 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
110 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
100 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
110 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
149 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
347 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
2k 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
236 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
431 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
337 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
481 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
232 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
430 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 ...
8
votes
3answers
2k views
What is the point of sshd “UseDNS” option?
I know what it does, but i don't know why. What attack(s) does it prevent ?
Is it relevant for all kind of authentication methods ? (hostbased, password, publickey, keyboard-interactive ...)
2
votes
1answer
361 views
How do I make a registered domain name resolve to a local/private IP address
I have a Debian Linux server running on my local network. I also have port forwarding set up on my router so that computers outside my network can use my domain name and get to my website/FTP/SSH ...
2
votes
1answer
144 views
Strange issue with curl/lynx and non resolving domains
I have a weird issue on my server in that if I use curl or lynx to try and access a
URL that doesn't exist (say a non registered domain, or a domain
that's not in DNS), I don't get an error, it ...
1
vote
2answers
223 views
dig @nameserver doesn't work
I have Ubuntu 12.04 with BIND9, working just as a caching server (forwarding to 8.8.8.8).
When I use, for example, dig +norecurse @l.root-servers.net www.uniroma1.it, I obtain the following output
...
0
votes
0answers
74 views
How to scan websites that are not available [closed]
I noticed that my cable provider isn't allowing me to access certain websites. At first I thought it was just my system, but after checking several other devices (Windows and iPad), I noticed it ...
1
vote
2answers
487 views
Change default DNS on openvpn connect
I am using Network Manager on Ubuntu 12.10 to connect to an openvpn server. The connection works without problems. However, when I connect, I would like to change my default DNS server to a server ...
0
votes
2answers
235 views
Best way to find out what Linux Version is used on a Webserver
Is this feasible? Can I find out which distro is used to host specific webpages? Whois doesn't have info for this.
