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1answer
129 views

does changing internal dns settings interrupt network connectivity

Just a quick question. Does changing the DNS servers in the network settings on Windows server cause any interruption of network connectivity? I am pretty sure the answer is no and I have tested on my ...
-1
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2answers
404 views

Domain name redirection with local DNS Server [closed]

Is it possible to redirect a domain name using a local Windows DNS server? For example if a user query www.yahoo.com it should be redirected to an Internal server.
4
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1answer
1k views

Using PowerShell, in Active Directory, how would I change all the DNS A records that have a given IP to a new IP?

We've been moving data centers and I have a lot of old records that were not correctly but in DNS as CNAME records, but A records that have a direct IP (e.g. 192.168.100.n) and they're all moving to a ...
3
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4answers
412 views

Don't automatically include all subdomains in DNSMasq address

It is possible to configure DNSMasq such that it returns a fixed IP address only for a request for that exact domain, and not for its subdomains? That is, I want it to return a fixed IP when resolving ...
1
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1answer
497 views

Unstable DNS with bind

we have a Centos machine called jupiter, on which I have installed bind9, On every other machine the DNS is set to be the IP address of jupiter (192.168.2.101), as you can see in the output of the ...
0
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1answer
272 views

Best method to redirect internal DNS to external website?

We host several web based applications outside of intranet. The URL's to these applications are long, complex and overall not user friendly. Ex: ...
1
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1answer
2k views

Recursive forward a zone in BIND

I have a VPS with BIND set up. It works well for several months. Recently I want to set up another DNS program to manage foo.example.org subdomain on this VPS. I've setup these in dns.he.net: ...
2
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1answer
1k views

BIND9 Forwarding by view

Hi I think this is a simple issue, I'd like to forward only to certain IPs in the LAN network, for example I have 2 acl lists: acl "office1" { 192.168.1.15; // With internet access }; acl ...
1
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1answer
215 views

Access internal host from a subdomain of an external dns

This image contains the topology I want to make work. I have a linux server that is used for hosting websites and also routing for our internal network. How can I access the internal server that ...
1
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1answer
43 views

Web Server configuration

I have a simple concept question regarding to the hostname configuration on DNS server. I am trying to set-up a webserver where there is an internal address and external address. Example: Server ...
2
votes
1answer
2k views

Resolve hostname without FQDN

I'm trying to configure Bind for internal LAN usage only (Linux server, Windows clients) and I would like to resolve workstation both by fqdn and shortname. For example, without DNS server, supposing ...
2
votes
1answer
1k views

PTR records not been created and/or updated

Windows domain, domain and forest functional levels at Windows Server 2003. Windows 2003 and 2008R2 domain controllers. Same for DNS (AD integrated). Dynamic updates on DNS zones are set to "Secure ...
1
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1answer
661 views

Logging DNS requests on a windows DNS resolver

How can i log DNS requests sent by clients to a windows DNS resolver without using the debug log file technique? It can be a windows 2008+ only solution edit 1 - some additional background: i ...
3
votes
1answer
732 views

external dns to internal dns

I have a local DNS server inside my network and have set up a few A Name records to some of my internal sites (i.e. app1.domain.com, app2.domain.com) and the dns resolves internally and loads the ...
0
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1answer
77 views

Sub-delegate Reverse DNS Performance?

I am currently working on a network with multiple subnets. So far I have implemented one reverse DNS entry that is a monolithic 10.* record covering everything. Is there any benefit or performance ...
3
votes
2answers
2k views

IP address used by nslookup and ping is different

I have a web server hosted in the network. It has a domain name registered. However, I also host a DNS server for the LAN. So, when someone wants to access the web server, it would check the DNS ...
3
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3answers
3k views

DNS issue for internal website routing internet connection from remote location

I have an issue that I could use some help with. Our company has a main location and a remote location. Previously, the remote location was connected to the main location through an internet ...
3
votes
3answers
373 views

Windows Server 2008 Active Directory DNS setup

I have to setup a small windows network inside my bigger linux/mac infrastructure. In order to get the windows clients logging onto the domain, I have had to make the DC their primary DNS server, ...
3
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3answers
517 views

Suggestions for transitioning to new GW/private network

I am replacing a private T1 link with a new firewall device with an ipsec tunnel for a branch office. I am trying to figure out the right way to transition folks at the new site over to the new ...
0
votes
1answer
109 views

Resolve another domain from current AD domain

We have 2 AD domain setup in our office. First is the primary domain for our office and exchange. The 2nd one is for development use to simulate production environment of our clients. Both domain are ...
2
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2answers
276 views

DNS for locally defined domians not working in regular intervals

I have been having a strange problem with our locally hosted DNS (bind on ubuntu server). We have a DNS server that hosts several locally defined domains (for example, myserver.localnetwork). ...
1
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1answer
5k views

Ubuntu DNS Lookup Failure

Some one installed and configured ubuntu on a virtual machine hosted on a machine in our network. I've recently noticed that all DNS lookup's fail but i cant find a solution to this. I've tried a ...
4
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4answers
3k views

Private DNS zone that resolves private subdomains, and forwards to public nameserver for existing public subdomains

I have a TLD with a series of subdomains that are public, say *.example.com. I also have a private server which is used as a SVN repository, which I would like to have available at svn.example.com, ...
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2answers
2k views

Hosting multiple domains on a single email server with one IP

I have an email server (mail) that currently hosts one domain example1.com. The server is behind NAT and I have split-dns configured on the LAN. The time has come to host additional domains on the ...
0
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2answers
438 views

Slow DNS Resolution with Windows

I recently installed a Cisco Linksys E3200 wireless router in my network. Attached to it is a Linux server running Bind DNS that is used to resolve names of internal services. Previously, I had a ...
1
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2answers
194 views

I think the DNS configuration I inherited is misconfigured. Would like help to verify

I hope this isn't too headache-inducing. Two servers, server1 (Windows Server 2003, IP 192.168.100.25) and server2 (Windows Server 2008, IP 192.168.100.22). server2 is the DHCP server and a DNS ...
0
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1answer
181 views

ipcop + active directory

im planning to install IPCop linux in my company. My problem is that the current router/dhcp/server is also running active directory. What configuration should I use to keep the old active directory ...
1
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1answer
669 views

Vyatta Proxy Setup

So I am currently migrating our office away from the current proxy (Squid running in Windows on our Mail server...I did not set it up...) to a new one, Squid running on Vyatta. So far I have ...
2
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1answer
457 views

DNS Server address configured inside Router not working

Well, I have an ISP router in which I have configured DNS Servers to use (Primary & Secondary) like Google DNS. It works just fine. But now I have setup a computer with DNS server (Simple DNS ...
1
vote
1answer
219 views

Why are .local and .arpa DNS queries showing up outside my network on OpenDNS?

We have a Windows office network with a local Actice Directory/DNS domain server. The server is set up with OpenDNS's servers as forwarders (see screenshot). However, when I look at my OpenDNS query ...
0
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1answer
248 views

How to emulate a domain name - Webmin Setup

I am currently working on a client project where they are using a custom CMS which relies on having the specific domains configured for it to work properly. When I try running the site on my test ...
1
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1answer
233 views

how can I effect DNS Caching on PHP/Memcache application

In a very high loaded Ubuntu/PHP web server I found that the PHP line: $memcache->connect("int-aws_ec2.memcached.myapp.net",11211); sometimes takes ~5 secs. Replacing the url with the ip address ...
0
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2answers
133 views

DNS, Load Balancer and IIS relationship

I've 3 Web Server with 2 main websites on each with domain name registered http://mycompanycrm.internal and http://mycompanyportal.internal each IIS server has two website ie. crm and portal. ...
0
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1answer
424 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 ...
3
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1answer
1k views

DNS split domain architecture while retaining access to split zones

Like most organizations, we maintain various split domains for a verity of reasons. Due to what we do, we frequently use the same name in different instances of the domain to point to different ...
1
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1answer
2k views

Since when the linux host utility ignores /etc/hosts? [closed]

I was struggling trying to find out the reason why the linux host utility was ignoring my /etc/hosts file until I find the answer to my question here: hosts file seems to be ignored: With this ...
0
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1answer
2k views

Cisco asa 5505 to use internal DNS server

I have just installed and configured a ASA 5505 firewall (basic license) which has 3 VLANs (outside, trusted, untrusted) and the configuration is really basic. Outside is for internet, trusted is ...
3
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5answers
348 views

How to convince a corporation to use DNS? [closed]

This is not the first time in my life when I have to convince a smaller corporation about using DNS service instead of /etc/hosts files and IP addresses. It might seem silly/funny at the first time, ...
0
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2answers
125 views

DNS and Subnet mask

If I change the subnet mask on my network will it effect the DNS server there? I just did an upgrade from 03 to 08 AD and when i did the upgrade i by accident put the subnet mask at 255.255.255.128, ...
1
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3answers
814 views

Windows DNS times out when connected to VPN

I've got a Windows Server 2008 R2 AD server that handles DNS for my network. From the main LAN, DNS works fine. However, when you connect remotely from the VPN, DNS returns internal resources ...
0
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3answers
2k views

My external IP opens my adsl model configuration instead of pointing to my server even after PF?

I have forwarded port 80 of my ADSL router modem (DLINK DSL 2640 T) for virtual server 192.168.1.18 which is my server running apache . Problem is typing 192.168.1.18 points to apache webpage on my ...
0
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2answers
3k views

Dnsmasq on Tomato firmware won't reply from simple name address

I want to be able to access computer 192.168.0.3 from the simple name "pos". Not "pos.com" or anything. With my setup below I can ping dev.pos, just not pos. I have to ping mydomain.pos to get a ...
2
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4answers
398 views

Resolve domain to another domain's IP on Linux via local DNS

I have a local domain name "SomeName" and an Internet domain "AnotherName.dyndns.org" whose IP can change at any time (it uses a dynamic DNS). I want to resolve "SomeName" to ...
2
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2answers
1k views

Internal DNS for non domain users

At the company I am at we have an Active Directory setup with an DNS server. All the computers that are part of the domain can resolve name from the DNS server with no problem. The current issue is ...
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2answers
3k views

How do I make a DNS record for only one subdomain and forward the rest?

I am using Windows server 2003. My primary domain controller is my DNS. I want to make an internal subdomain for my main website, like a staffpage.oursite.com . However I do not have a zone for ...
3
votes
1answer
118 views

Prevent Server 2003 DNS from caching Failed Lookups

We have a Server 2003 running DNS with Root Hints but with some forwarders for specific domains that contain private services. The DNS servers for the private services are on site to site links, and ...
0
votes
1answer
89 views

What DNS entries should exist for primary domain?

I have an old domain that was first set up in NT4 days. It has been through several admins, some better than others. The last upgrade done was from 2003 to 2008 R2 via a migration to new DCs. I'm now ...
0
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1answer
486 views

Wrong DNS name for client when client connects to MySQL - how to use another client host name?

I'm trying use a host restricted MySQL user when connecting from one Amazon EC2 instance to another. I wanted to use elastic ip address for their dns function, but you can probably ignore the Amazon ...
0
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2answers
107 views

When my domain users in “example.org” type the internet address, www.example.org they cannot get to the public domain website

I have a Server 2008 Domain Server [DC Controller] named “example.org” the same as my public internet domain www.example.org When my domain users in “example.org” type the internet address, ...
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2answers
2k views

DNS update to resolve external address as internal IP

This should be a simple one: We have an inhouse mail server, so our outlook users hit it locally.. mailserver.mydomain.local But smartphone and laptop users need to be able to hit it from inside and ...