Domain Name System (DNS) is a service that provides the resolution of host names to IP addresses.
0
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0answers
279 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
517 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
446 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
170 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
235 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
77 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
541 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
260 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.
2
votes
1answer
115 views
CNAME: Mail address gets rewritten
I have a problem with receiving mails. I do not know if my server or the server of the sender is wrong configured.
I have a domain daniel-marschall.de which has following DNS RR:
...
1
vote
2answers
347 views
How can my server detect IP changes in order to notify my dynamic-DNS provider?
Just set up ubuntu server, which has a dynamic ip. I am looking for a way to keep my dns server updated. Im using entrydns to do this and they provide the following command to update the server.
curl ...
2
votes
2answers
382 views
DNS Master vs Slave and Primary vs Secondary
I'm a little confused about the difference between a "secondary name server" and a "slave name server" and a "primary name server" and a "master name server"
I understand that a slave name server ...
1
vote
2answers
398 views
How to assign multiple fixed ip address for one domain?
I'm running dnsmasq,
address=/chat.freenode.net/130.239.18.172
address=/chat.freenode.net/140.211.167.105
But seems dnsmasq only recognize the last record, what should I do?
1
vote
1answer
169 views
How can I resolve local IPs to hostnames? [duplicate]
Possible Duplicate:
How to make a machine accessible from the LAN using its hostname
I have is a simple home network with a few machines connecting through DHCP. If everyone and their ...
0
votes
0answers
101 views
Apache webserver DNS Configuration [duplicate]
I've configured Apache web server and I've mapped my IP to some web address (like www.webaddress.com) and put the entries in /etc/hosts file also. Now I want to access the same www.webaddress.com from ...
1
vote
2answers
80 views
Is there some kind kind of hosts.additional file for Linux
If you have a list of servers all linking to each other by static addresses, is there some kind of hosts.additional you can use as some kind of file based DNS?
ie The hosts file contains static ...
6
votes
1answer
222 views
Why the difference between network addresses reported by hostname and ping?
I have tried hostname and ping in a cluster machine, with different outputs. I am wondering what is the difference between the two? For example, on the same machine, hostname outputs node4.XXX and
...
1
vote
1answer
219 views
Changing host file in Ubuntu
I tried to change /etc/hosts to change a local DNS entry, so I can map any website name to any IP, but it isn't working. How can I debug it?
4
votes
2answers
788 views
What is resolv.conf and why VPN client's hack it?
As stated in a previous question I want to connect to 2 VPN servers at the same time and for each connection specify the IPs of computers I want to reach with it.
One of this VPN connection is done ...
1
vote
1answer
295 views
Howto use Google DNS with ppp
I have a mobile broadband device that I use to connect to the internet. I wish to use the google dns service, their nameservers being 8.8.8.8 and 8.8.8.4.
I add them to /etc/resolv.conf but when I ...
1
vote
1answer
176 views
possible spots to configure BIND-DNS forwarders
i'm investigating our BIND's configuration and can not figure out how it is aware of it's next name server to ask for some domain he's not authorative server for...
e.g. home domain is ...
2
votes
2answers
268 views
BIND server doesn't recognize my zone properly
I'm pretty new to BIND so I was hoping maybe someone can help me understand why I can't resolve. What is wrong?
named.conf
options {
listen-on port 53 { localhost; 10.30.0.10; };
...
2
votes
1answer
241 views
Simplest way to set up multiple subdomains to separate VMs running on single host
Problem:
I´m planning to set up several virtualized centos, rhel or ubuntu guest machines on a single centos host server (most likely using KVM). Each guest VM is running an instance of a webapp + ...
3
votes
1answer
139 views
How to skip DNS checkup while I'm disconnected from Internet
I use RedHat machine. /etc/resolve.conf was set to nameserver 8.8.8.8 and it works well.
I'm wondering how to connect my machine if it's disconnected from internet? It seems that if DNS of 8.8.8.8 is ...
4
votes
1answer
302 views
Creating a new TLD for private network
I want to setup a new TLD (foo.) for my the private network so that I can host some child domains which will be accessible from within the network. For this purpose I have setup a DNS server ...
4
votes
2answers
228 views
Password protecting a system file? (e.g. /etc/resolv.conf)
I am trying to parental control myself by restricting web access via OpenDNS. The OpenDNS account password will be handed to someone trustworthy. Now, I want to put some restriction on the ...
5
votes
4answers
2k views
How to log all my DNS queries?
How can I create logs of every DNS query that my computer makes along with the responses it gets?
1
vote
2answers
150 views
bind9named binary missing - not starting
I have just compiles and installed BIND 9.9.1-P1 on Debian 6.0 as the version in the repositories is too old for Samba4, and am getting the said error. I have been looking for source for named, but ...
1
vote
2answers
270 views
Force usage of DNS server provided by DHCP?
I got a preconfigured debian image that gets it's network configuration by DHCP, however the DNS server is/was fixed to 8.8.8.8. This was configured using /etc/resolv.conf, so I deleted all the ...
1
vote
0answers
271 views
Changing file permissions problem [closed]
A few hours earlier I bought a beaglebone (Ångström installed) and now I am trying to add nameserver 8.8.8.8 (google DNS) to /etc/resolv.conf. However when I open it with vim and try to add my ...
1
vote
2answers
457 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 ...
0
votes
0answers
897 views
Mail Server not working?
I am trying to setup mail server since a long time but as I am new to Linux I have unsuccessfully configured it to the best as I could but now I need assistance.
I have installed it using the links ...
1
vote
2answers
986 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 ...
0
votes
0answers
67 views
Strange DNS problem with Debian on an IA64 architecture machine [closed]
I installed Debian 6.0.4 squeeze on my IA64 HP server,
I noticed from the get go that I could not ping hosts using DNS, and thus I sought to edit the /etc/resolve.conf file.
I changed the server's ...
3
votes
1answer
265 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 whats happening in the background, specifically the order of what is ...
1
vote
1answer
398 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.
1
vote
1answer
2k 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 ...
3
votes
3answers
5k 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 ...
3
votes
2answers
2k 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
...
1
vote
2answers
872 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 SOA record (start of authority) I always use a serial in the recommended format
YYYYMMDD##
where ## is the counter for changes on that day.
...
0
votes
2answers
142 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
votes
1answer
390 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 ...
3
votes
2answers
457 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
votes
2answers
1k 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
votes
2answers
784 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 ...
1
vote
3answers
269 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 ...
2
votes
1answer
4k 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
vote
1answer
174 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
votes
2answers
970 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 ...
2
votes
1answer
828 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 ...
