The Domain Name System, usually referred to by the acronym DNS, is a hierarchical, distributed database where the keys are domain names.

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How does my domain reseller know my server ip? [duplicate]

On my domain resellers DNS page I can specify my own addresses for own nameservers. What should be the value of this fields? I have seen examples where the value was ns1.domain.tld but no other ...
-3
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0answers
15 views

Basic DNS setup for a simple lookup

I am looking for simple steps to configure the bind DNS server. I have the DNS server, a webserver and a client all on the same network. I want the client to be able to type in blue.com and have it ...
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0answers
13 views

Switching DNS is breaking https redirects

We (my company) recently switch our name servers from GoDaddy to Amazon. Our sites remain hosted on GoDaddy. Before switching name servers, everything worked fine. We have a site, ...
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0answers
3 views

DNS Failure From Cisco AnyConnect SSL VPN Subnet

We have three Windows Domain Controllers (2012 R2 and 2008 R2 mix), all DNS servers. Split-zone DNS scenario. DNS resolution is working for all internal subnets except over User VPN. All network ...
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0answers
8 views

How does a resolver handle DNSSEC exactly? [on hold]

I would like to know how a resolver does handle DNSSEC resolution exactly. Does it proceed to the name resolution and then the validation of the data, or does it both simultaneously? Assume the ...
-3
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0answers
30 views

Email forwarding failing

I'm a bit at the end of my rope with this one, hopefully a server admin somewhere who deals with email has seen this sort of thing, I can't seem to find any answers anywhere. I have email forwarding ...
-4
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0answers
12 views

convert Dyamic DNS record to Static DNS record using CSV

I have a problem here that I have a list (.csv) of resource record in DNS (currently they're in dynamic) and i would like to convert them to static record. Do you have a powershell script for this ...
-1
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2answers
22 views

Can a DNS server (specified by its IP address) be spoofed?

When a DNS server is specified (in my case in OS X, in the Network Preferences), can it be spoofed (for instance by an organization with the power of a government)? I am asking the question because ...
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10 views

OpenBSD pf.conf - Redirect all internal dns requests to gateway - multiple lans

I have 2 isolated LANS on my router. They are blocked from communicating in pf by: block in log on $int_if from "192.168.1.0/25" to "192.168.1.128/25" block in log on $int_if from "192.168.1.128/25" ...
2
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1answer
33 views

Will Windows Server 2012 support a nested conditional forwarder?

I work for a company with a split DNS configuration on the AD domain. I know that this is less than ideal, but I'm not in a position to drive change in this area. I own authoritative DNS (internal and ...
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1answer
11 views

What does the Bind 9 query error log debug 2 qrysent, retry, restart numbers mean?

I am trying to trouble shoot some DNS problems with BIND 9 when I have a cache miss on my recursive resolver. I've enabled debug 2 logging for query errors and am getting the following: 01-Jun-2015 ...
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1answer
19 views

Spoof DNS request from a specific IP address in Bind

Lets say a user block at 192.168.1.0/24 wants to access facebook. I want the BIND Server to reply with a wrong IP address, lets say 172.32.1.1. But when users from the IP address block of ...
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1answer
27 views

Can I define a sub-domain for a record set at my ISP? [on hold]

My ISP for home internet is giving me some kind of DNS record that lets me redirect a name to my dynamic IP address, I set something like MYNAME.go.myisp.tld So accessing that domain shows my home ...
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2answers
38 views

Redirect subdomains to services on different ports of same server

I have a VPS which has 1 IP. If I run two socket servers, one on port 8080 and the other on port 8081, is there a way I can map service1.mydomain.com to the socket server on port 8080 and ...
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2answers
40 views

Configuring DNS for domain hosted outside of OVH

I have just moved my site from FastHost to OVH, but run into a problem. spreadsheet123.com are transferred without any problems, at least I would like to think so, but spreadsheet123.co.uk, ...
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0answers
18 views

DNS management system [on hold]

Anyone aware of any open source DNS management system ? I need ability to create users in it so each user can administrate his domain ( e.g. change IP for domain, add MX entrys etc etc). I found ...
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1answer
29 views

Mapping main domain and subdomain to different nameservers [duplicate]

I have mapped my main domain to a different hosting using NS record. but I want to map a subdomain on the same hosting. What DNS setting do I need to configure? Example: abc.com is mapped to ...
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0answers
35 views

Dnsmasq's DNS response auto caching feature not working

Dnsmasq Cache and Internal Log on USR1 signal dump (when running with or without --no-daemon and --log-queries for analysis) it always shows: 0/0 cache, meaning caching feature of Dnsmasq not working. ...
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1answer
39 views

dns bind not working nslookup gives servfail

I am connected to a reliance wifi connection obtained a 192.168.0.101 ip. 192.168.0.1 as primary dns. I configured dns bind to give name to my server process. To test that locally i changed the ...
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0answers
32 views

error: rndc: connect failed: 127.0.0.1#953: connection refused, how fix? [on hold]

today unexpectedly the named dns server not start never, when try to start show error : if send this command : service named status show this error: rndc: connect failed: 127.0.0.1#953: ...
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0answers
11 views

appspot website not coming up [on hold]

www.fugatesales.com has been pointing to http://fugatesales.appspot.com for a few years and it has been working fine. A few weeks ago www.fugatesales.com stopped working. fugalesales.appspot.com ...
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1answer
25 views

Dynamically modify DNS to add a subdomain

Is there a way to modify a domains DNS using PHP for example. I am not quite sure how a company can be in charge of a domains DNS (Can I be?) What processes do GoDaddy (for example) go through when ...
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2answers
40 views

CNAME interfering with MX record? [duplicate]

I have got a free domain at Freenom, which I use to host my website, and to receive email. About a month ago, I used an A record to point [Blank] and www to the A record of my webhosting. I also had ...
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1answer
41 views

“net.c:577: sendmsg() failed: Operation not permitted” in dig Output

I am running Bind 9.10.2 version on CentOS 6.6 machine. While running the dig command, i am getting "net.c:577: sendmsg() failed: Operation not permitted" notification. dig utility is giving me an ...
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18 views

VPN network for DNS lookups?

I want to provide a DNS server which filters out some websites. This should be used for mobile connections. I know that you cannot set a DNS server when connected through your smartphones mobile ...
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2answers
63 views

Location dependant dns redirection

I have a corporate network with two sites. Each site has its own domain controller with dns service and both domain controllers are servicing the same company.net domain. We have an mpls network set ...
5
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1answer
176 views

DNS Always Getting Non-Authoritative Answer

I'm trying to get an authoritative answer on a DNS query. I've used nslookup using "set querytype=ns" to get the primary name server, which returned the following: yesecommerce.com primary ...
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2answers
56 views

DNS MX vs CNAME entries

I have recently bought a domain for setting up a website. The website is hosted on OpenShift. Since OpenShift doesn't use its own nameservers, I've edited the DNS records on the domain registrar's ...
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1answer
18 views

host -t MX pro.lan -> pro.lan has no MX record

Setting up some service on my server. DNS/DHCP/Gateway ok for my own local network. Planning to host a web mail server (working on local for users for now) I added in my dns A and MX record (rDNS ...
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2answers
28 views

CNAME Record with any other Resource Record in BIND

As per best of my understanding, CNAME can't exist with any other RR in DNS Server. I am using BIND 9.9.5. Now when i am adding CNAME record with a domain which already has NS Records, i am not ...
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12 views

Is it possible to set the TTL of an Azure VM?

In this question Azure VM server url not resolving after re-boot I could not get to the Azure server via URL after I shut it down and rebooted. This is probably likely because I was assigned a new ip ...
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36 views

DNS is only available locally [closed]

I have recently moved from a managed webhost to an unmanaged dedi provider to have cheaper prices (due to non-management) as well as better resources, hosted at kimsufi.com with a domain hosted at ...
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1answer
17 views

Azure VM server url not resolving after re-boot

I have an azure VM that I had shut down for a day and have restarted today. After restarting, I can only navigate to that address using the ip address and not using the URL (eg. ...
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26 views

cannot resolve … Unknown host with Bind [on hold]

I am using BIND on OS X. nslookup and dig work (I think) but ping and HTTP in browser do not seem to work. $ nslookup a.appname.local Server: 127.0.0.1 Address: 127.0.0.1#53 Name: ...
1
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1answer
30 views

DHCP Server Not Registering PTR Records

I've got a DHCP server that's configured to "Always dynamically update DNS records". Unfortunately, it's not doing its job. The client sends an Option 81 with its FQDN and all flags at 0. The ACK back ...
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1answer
46 views

Is it fundamentally possible to configure a VPN with “fake” CNAME?

The goal here is to alias a real domain on the wider internet with something like a fake CNAME entry (or by any other means available). For example, suppose I want to configure the domain fake.derp ...
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2answers
45 views

cname record to rhcloud.Com not working anymore

I have a website hosted at rhcloud.com. I added 2 years ago a cname on my domain name dp-global.vn to redirect to the website (gdp-robertduy.rhcloud.com). Today it is not working anymore and the ...
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0answers
15 views

How to add additional domain to vps [closed]

I have a vps with primary domain xyz.com Now I want to setup another domain abc.com such that it points to xyz.com/newdomain Currently I have setup abc.com such that it is pointing to my vps home or ...
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0answers
11 views

Local NS list does not match Parent NS list, Name Servers are on the Same Subnet

I have my .ly domain registered with https://reg.nic.ly and my website is hosted on godaddy VPS. I have set custom NS (ns1.demodns.com and ns1.demodns.com) on godaddy via WHM. When i use these NS with ...
1
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1answer
24 views

Cannot resolve DNS -> Refresh -> Loading [closed]

Hi I'm not the actual Network guy here, but he is off for a long time with Health issues. We're running 150 employees in this place, and the past few months we're been having slight issues I'm hoping ...
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1answer
19 views

Windows 2003 subdomain not working

I'm trying to add a subdomain to my main one, to be connected to an external IP address. So I have: example.com mail.example.com www.example.com Which are working. I want to add test.example.com ...
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1answer
11 views

Debian - One Gateway 2 interfaces how to?

I have this scenario. 4 VM Debian8 : 1 DHCP 1 DNS 1 GW 1 Client I can ping from all my VM (except GW) each other (@ip or hostname). My GW have 2 interfaces (eth0->LAN / eth1->WAN). From it I can ...
0
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1answer
16 views

Exchange 2007 - SMTP Traffic

I've done a check of what SMTP trafic is being routed through a 2007 mail server, which we are decommisioning. It looks like all printers are using the mail server for smtp relay, would it be ...
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2answers
67 views

Can ping by IP address but not by hostname [closed]

I have 3 Debian VM. 1)DNS 2)DHCP 3)Client DHCP looks ok. I got my fixed-address on DNS and Client like I want. When I try to ping each of them @ip it's responding. If I try to : ping dhcp But I ...
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0answers
47 views

ERR_ICANN_NAME_COLLISION when trying to use localhost .dev in Chrome [migrated]

Today I got this error when trying to access local domains specified in apache httpd-vhosts.conf. It happened for the 1st time with a .dev domain, so it seemed plausible that in light of recent news ...
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2answers
69 views

rDNS 'zone [xxx] has no address record (A or AAAA)

teaching myself some server tricks. Getting trouble with bind9 on debian8. named-checkzone pro.lan db.pro.lan.inv zone pro.lan/IN: NS 'server.pro.lan' has no address records (A or AAAA) my ...
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1answer
27 views

Linux Server Update Windows Server DNS (DHCP Not Windows)

I have Linux machines that are DHCP clients that have send hostname enabled but are not updating DNS on the Windows servers. DHCP is coming from the firewall, NOT Windows. Other windows machines ...
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1answer
18 views

collectd: using dynamic IP for network plugin

I've setting up a server which collects statistics of different other servers. I'm using the network plugin of collectd, so I configured the plugin network by setting up a listener. In my network, I ...
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0answers
54 views

DNS problems with a static IP configuration in a VM [migrated]

I am using Parallels Desktop 10.2 for Mac on OS X Yosemite. I am trying to configure my my client (Ubuntu 14.04) to host a website that is available to the host via a particular domain name. In the ...
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2answers
35 views

Match BIND's view to certain users

It's easy to make a BIND's view to match certain IPs with the aid of match-clients directive. But is it possible at all for a view to match not IPs, but users? For example service a is run under user ...