1
vote
1answer
58 views

DNS caching for a DNS name with two different IP addresses (internal vs. external)

Suppose we have a DNS entry ocean.corp.tld internally pointing to an internal IP address on our corporate network, and externally pointing to an external public IP address. Essentially same DNS name ...
0
votes
0answers
64 views

Can't figure out how to get started with powerdns-recursor lua scripting

I have a server (Ubuntu 12.04) where I run powerdns-recursor. I'm trying to add some logic to certain requests and have got my target set on lua scripting for powerdns. I don't seem to be able to ...
0
votes
1answer
28 views

pdns-recursor allocates resources to non-existing queries

I've got a lab-server running pdns-recursor. I set it up to experiment with rate limiting, so it has been resolving requests openly from the whole internet for weeks. My idea was that sooner or later ...
3
votes
2answers
146 views

No SOA record — what are the implications?

I was investigating a bunch of spam domains, and none of them have an SOA record. I have never seen this before -- I didn't even know it was possible. How can DNS work without an SOA record? If it ...
10
votes
2answers
233 views

Name resolution difference between CentOS and Debian

I have a small Java program that loops calling InetAddress.getByName("example.com") every second. When I run it on a CentOS 6.4 box using 'strace -f' I see that /etc/resolv.conf is opened and read ...
0
votes
2answers
409 views

nginx, dns - domain.com resolves but subdomain.domain.com doesn't

I am going to pull my hair out! I have a website domain.com with the following virtual host configuration /etc/nginx/sites-available/domain: server { listen 80; server_name ...
0
votes
3answers
91 views

Doesn't DNS diversity negatively affect performance? Why/how?

If you look at the press releases of various orgs that run the internet, you can see them praise the fact that now they run root server X in city Y, as if that magically makes everyone in city Y get ...
1
vote
1answer
83 views

Disable hostname resolution in PAM

When authenticating using PAM, PAM exposes the remote host to the module. On the code side of things, it exposes this via PAM_RHOST using pam_get_item(). However, PAM will attempt to resolve the IP ...
0
votes
1answer
106 views

DNS Resolution for example.com - Can you explain? [closed]

When I type mynewdomain.com into my browser I believe the following happens. My computer sends a request to my ISP's name servers to find the IP address of mynewdomain.com My ISP name server sends a ...
1
vote
2answers
2k views

Is it possible to have round-robin DNS with /etc/hosts file?

Is it possible to have round-robin DNS with the follwing configuration in /etc/hosts? 192.168.4.10 shaakunthala.local 192.168.4.20 shaakunthala.local I'm on Linux.
0
votes
1answer
466 views

resolv.conf search suffix limited to six domains and 256 characters

Is there a way to increase the resolv.conf search suffix limitation beyond six domains and 256 characters? This is an issue for an environment that has well over six domains to consider. I realize ...
0
votes
1answer
177 views

Resolving Domain Name to IP Bsased on Location

I am currently setting up two web servers for a client on Amazon AWS (EC2). Both are up, secure and functioning (one is in Singapore and one is in North America) and everything is great. However, as ...
1
vote
1answer
48 views

Should the DNS and web server be on the same location?

I own 2 domain names pointing to the same webserver: the DNS server of domainA.com is hosted by provider A (e.g. in New-York) the DNS server of domainB.com is hosted by provider B (e.g. in London) ...
3
votes
1answer
604 views

How to forward missing DNS names of an existing zone in Windows DNS server?

I have setup DNS records for a public domain (say example.com) in my public DNS provider. Among the records, there are some A records of the type *.production.code.example.com that point to a specific ...
0
votes
2answers
183 views

Resolution of public domain server internally

I have an issue with my users internally not being able to resolve the public namespace internally. I use domain.local as my internal namespace and domain.com as my public namespace. However I cannot ...
2
votes
1answer
675 views

Windows 7 is skipping the primary DNS server and moving straight to the alternate DNS server

I'm running into an odd issue with a number of Windows 7 machines on my network. These machines are currently configured to use a local DNS server, 192.168.1.42, as their primary DNS server. Google's ...
-1
votes
1answer
167 views

ubuntu server name resolution order

I am using LAMP on Ubuntu server, and I need to query MSSQL database on Windows XP machine, both on the same network. I use winbind to resolve SMB hostnames. My problem is name resolution order. It ...
0
votes
0answers
173 views

One dns server in different subnets

I have installed a small Linux server; the server is in a different subnet as the internet hosts. I added a route to my nat router to create a connection between both subnets. In both subnets I use an ...
0
votes
0answers
318 views

Host Name Resolution - ISA 2006 - VPN PPTP

We are running an ISA 2006 server and PPTP VPN connection works fine. Clients are able to connect to internet, access Outlook, CRM, etc. The problem we are encountering is that host name resolution is ...
-2
votes
2answers
330 views

Nameserver not resolving or domain not pingable [closed]

Sorry, if anyone can think of a better title please change it! I want to host my own websites from home. For testing purposes, I have a virtual machine running a trial version of Windows Server 2008 ...
2
votes
2answers
149 views

Conflict between local DNS zone and country domain name

I have recently setup a new Windows 2003 server for a regional office in Germany. The server has been setup as a child domain on our corporate setup and, being in Germany, the domain was called de, so ...
4
votes
1answer
3k views

Adjust Windows DNS timeout similar to the Linux resolv.conf?

I'm curious if there's a mechanism to adjust the Windows client resolver timeout in the same manner that the "timeout" option in the Linux /etc/resolv.conf file works. For example, my Linux ...
0
votes
0answers
147 views

Appropriate way to point for DNS? DNS sometimes not resolving

I'm using Amazon EC2 and put up an Elastic IP. With my DNS, I have a CNAME for www.mysite.com pointing to the ec2-elasticip-amazonaws.com and then an A record for mysite.com pointing to the direct ...
0
votes
1answer
405 views

BIND: Redirect all lookups to a different nameserver using NS

I'm creating a dns server for a local network, and I need to do redirection based on the domains. Also, i'm fairly new to DNS. I have to redirect all "ia.in" domains to a different local nameserver ...
0
votes
3answers
378 views

How does domain resolution occur when resolv.conf is blank and your server has a static IP?

I've installed ubuntu server 10.04 on a computer in my LAN. From my router control panel I set it up to be Static DHCP. My resolv.conf file had the output nameserver 192.168.1.1 I removed that ...
0
votes
3answers
2k views

I can ping IPs, but can't ping any domain

I have a CentOS 6 x86 server. If I ping 8.8.8.8 and my server gateway, there's no problem. If I ping google.com, yahoo.com, etc, it returns "ping: unknown host google.com". When I saw this problem, ...
1
vote
2answers
407 views

Simulate different domains on the same machine

I'm going to have 2 servers (SSO and application server) running on the same machine but listening on different ports. Is it possible to assign them following addresses: example.com and ...
1
vote
2answers
81 views

DNS and correct routing [duplicate]

Possible Duplicate: What is the correct behaviour when Nameservers Change I registered a domain at GoDaddy and changed the nameservers to my server's. (GoDaddy sets up the domain using ...
1
vote
1answer
228 views

windows 7: Name resolution not working as expected when connected via VPN

I have a local machine on my home network called "sheeva" (it's a sheevaplug linux server running subversion). I can connect to it fine using it's local IP address of 192.168.1.108, and when I'm not ...
1
vote
1answer
139 views

Can the DNRD master file contain multiple records for a name?

I am trying to get DNRD to serve certain records from the master file in a round robin manner. I have tried several combinations e.g.: 1.1.1.1 hostnameA 2.2.2.2 hostnameA 1.1.1.1 2.2.2.2 ...
0
votes
2answers
141 views

Looking for Iterative Resolver

I am looking for an Iterative Resolver server - a server that would handle the DNS resolutions for PC users in an environment. I am well aware of the Microsoft DNS and Bind, and also of free services ...
0
votes
1answer
311 views

Resolver Timeouts in Bind 10

Is there any detail on how bind 10 handles resolver timeouts? The latest info I could find was on Bind 8.2.1+ http://fengnet.com/book/DNS.and.BIND.5th.Edition/dns5-CHP-6-SECT-2.html The resolver ...
-1
votes
3answers
415 views

Host name resolution on Windows 7

Other than specifying the host name in the host file for web site are there other steps needed to be able to refer to the site by that name instead of the ip address? I want to access the site like ...
0
votes
2answers
542 views

Name Resolution in a DMZ

We're building a new set of web servers to be located in a DMZ, but we want them to be able to use our internal mail server. The mail server has a CNAME of smtp.uk.ourdomain.com - our existing servers ...
2
votes
2answers
605 views

How do an ISP's DNS servers resolve a local hostname?

This might be a stupid easy question for some of you, but I couldn't find a fast, accurate answer online. I had a problem recently where I was trying to SSH to a local FreeBSD server, but the ...
13
votes
3answers
12k views

How do I add IPv6 address into System32\drivers\etc\hosts?

There is already by default, and it works (Win 7): ::1 localhost This also works (testing with ping): ::1 hosta But when I'm trying to add something non-loopback, it ...
0
votes
1answer
719 views

Resolving on Dual-NIC with non-recursive DNS on internal side and recursive external DNS

Let's say I have an internal LAN (LANA) with AD/DHCP/DNS, isolated from the internet with no default gateway. Its DNS Server DNSA is thus non-recusive. A few of the servers also have a second NIC to a ...
2
votes
2answers
6k views

Change the order of DNS lookup when connected in the VPN

Using Windows 7 Pro here. I have my LAN network adapter with DNS server 8.8.8.8 (Google's DNS). I also have OpenVPN client to connect to my company's network. If I type "nslookup" while ...
1
vote
2answers
275 views

Configure DNS Zone to Forward for any non-existant hosts

Not sure if this is possible, but in my head, it sounds reasonable to be able to do. I'm just not sure how... We have our company domain on our internal DNS servers (company.com), but the domain is ...
1
vote
2answers
1k views

Running a Windows domain from a non-windows DNS

Is that even possible? I would like to have pfsense triple up as DNS + DHCP + Firewall/router for my windows domain. The question is, is that even possible? I'm a developer not a sys admin so please ...
5
votes
4answers
2k views

Why must a linux server be rebooted to properly handle a change in resolv.conf?

I know this has to just be a lack of my understanding but here's the problem. We recently changed DNS servers from 192.168.1.1 to .2, so I went around to all 8 of my linux servers and changed ...
2
votes
5answers
634 views

How to access a server by name when it is not a member of a domain

I've configured Samba and a LAMP server on a machine running Ubuntu 9.04 Desktop, and want to insure that other computers on our network can always access the samba and web services on that machine by ...
0
votes
5answers
155 views

How to have a webserver resolve urls in php files?

Instead of having the client resolve URLS, I want to let my webserver do that. So ideally, I could turn this: <a href="http://www.long-domain-name.com/"> into this: <a ...
1
vote
5answers
716 views

How do I set up a nameserver to process ALL DNS requests?

Is there any way I can set up a nameserver to process ALL DNS requests that come to my server and pass them on to backend servers regardless of whether I have a DNS entry for the target domain? For ...
4
votes
3answers
435 views

Question about non-authoritive DNS

I am trying to understand DNS and I have the following question: Are the terms secondary nameserver, non-authoritive nameserver and caching-only nameserver the same or are there differences? As I ...
2
votes
3answers
3k views

Cisco - NAT causes nslookup to return local IP

A little background: I have a server on my LAN that is statically NAT'd to its public IP in my Cisco 871. The rest of the same local subnet is statically NAT'd to a different Public IP, in order to ...
7
votes
8answers
12k views

OS X: Can't Resolve Windows Machine Names

I'm running a mixed environment at home and at work. My server machines are Win Vista, and I have a Unibody Macbook Pro running 10.5.7 On my mac, I can ping some home windows by name (If I use the ...
0
votes
2answers
2k views

How do I fix an “invalid” SMTP server issue?

Note: Domains and IPs obfuscated for security. We have an internal web application that sends e-mail reports out to various vendors. Our primary exchange server (domain name co.XXX.YY.ZZ) does not ...
2
votes
1answer
3k views

How to set up a BIND DNS server to respond a single IP address to any request on Windows?

I want to configure a BIND DNS server (since Windows Web Server 2008 does not have DNS service, I had to install BIND) that responds any request with a single A record. I had set up a * record but it ...