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4
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1answer
3k views

How should DNS be configured for remote VPN access to a Windows Domain?

Suppose you have a small windows domain configured as follows: domain name is ad.example.com (as per these guidelines) DC1 is at 10.10.10.3 DC2 is at 10.10.10.4 DC1 and DC2 are running the ...
2
votes
1answer
247 views

Two DNS zones: one for internal, the other for DMZ servers, is it possible?

I currently work in a company that has two DNS servers (ns1 and ns2) open to the Internet on the DMZ, and it's hosting two zones: company.org and company.net. In both zones there are servers in the ...
2
votes
1answer
991 views

How to use CNAME to external hosts on local DNS Server?

I have a domain mydomain.com and I'm using an external DNS Server to resolve some names like www.mydomain.com and webmail.mydomain.com on Internet. Now, I need to create a rule, only on my LAN, to ...
1
vote
1answer
25 views

Secure Dynamic Updates in Active Directory-integrated DNS server not working

Domain Controller + DNS server is Window Server 2008 R2 Std. DHCP Server is Cisco Catalyst 3560 & 3750 How to trust this DHCP Server in my Active Directory-integrated DNS Server, so that I can ...
1
vote
1answer
159 views

Windows Server 2012 external DNS not working

I have registered a domain name (example.com) through a registrar and have it configured well enough so that when I go to http://example.com from a remote pc I get my default website. When I go to ...
1
vote
1answer
683 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 ...
1
vote
1answer
291 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
vote
1answer
1k views

Multiple Homed Windows 2008 Server / Windows 7 Client

I have a small Windows 2008 network, with some Windows 7 clients. The clients are both laptops with docking stations and I would like them to communicate with the Windows 2008 server (for filesharing) ...
4
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0answers
242 views

Why can DNS server not resolve any domain ending in .io?

I have two windows domain controllers. 10.10.10.10 Primary ( win 2008 r2 ) 10.10.10.20 Replica ( win 2012 r2 ) The second one is configured as a replica of the first. About once per week, the ...
4
votes
0answers
197 views

Samba4 internal DNS and isc-dhcp zone update

Could anybody explain, how to solve this problem with internal samba4 DNS and dynamic zone updates from isc-dhcp? In the logs I have: dhcpd: Unable to add reverse map from ...
2
votes
0answers
392 views

Outlook, Webdav Calendars, and Internal DNS

I wish I knew a better way to title this problem, so if anyone can think of a more appropriate title, please let me know. I've been banging my head on this problem for a little while, and usually I ...
1
vote
0answers
165 views

nginx proxy_pass with dynamic upstream servers

We're currently stuck in a situation where we are using nginx as our main frontend server for a set of services backed by a dynamic DNS based service discovery with Mesos-DNS. Our nginx configuration ...
1
vote
0answers
24 views

openshift origin M4 - Can't access gears

I have openshift Origin installed in 3 separate servers Broker/Nameserver: openshift.example.com Node 1: node-1.example.com Node 2: node-2.example.com Districts: Small (small gears) ...
1
vote
0answers
30 views

BIND DNS to DNSSEC Converting Forwarder

I have an internal only DNS server running on BIND 9.8.4 on Debian, this recurses and caches all queries other than internal domain (ourdomain.lan) to OpenDNS. What I am hoping to do is to have all ...
1
vote
0answers
112 views

Domain name record in Active Directory points to .0 IP address, is this safe to delete?

Not sure if this is safe to delete. I have read that these AD domain name records are created by netlogon service, and/or others, and not changeable. I have two domain controllers, each showing ...
1
vote
0answers
90 views

forward lookup zone not affecting domain network computers

ok so on the internet we have companyname.com which is our website and DNS for it hosted elsewhere. here at office our windows domain is companyname.office. On the internet I have a A record for a ...
1
vote
0answers
229 views

Specify DNS/Domain Controller when authenticating against a different domain

Client has two domains residing on the same subnet/physical network. Essentially there's just a POP3 mail server (OLDSERVER) and one of the old DCs (OLDDC) on life support to keep OLDSERVER happy. ...
1
vote
0answers
376 views

Getting error 500.52 when creating reverse proxy with url rewrite

I have used the following technique for achieving Url rewriting. http://weblogs.asp.net/owscott/archive/2013/10/24/creating-a-reverse-proxy-with-url-rewrite-for-iis.aspx However i am getting the ...
1
vote
0answers
153 views

Internal-only DNS Master and Slave Servers on Linux (No Internet) - Recursion?

Using two physical Linux servers on different sub-nets, I'd like to have master and slave DNS servers. These DNS servers will only resolve internal names and addresses. Neither the DNS servers nor ...
1
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0answers
299 views

RE: 0000208F error

we are having problems with DNS whereas when a statically assigned system is rebooted it loses its connection to DNS, browsing through the logs for the issue, I have found the following: The DNS ...
0
votes
0answers
29 views

Repairing DNS on a single 2k3 domain server

Ok we have a 2k3 server. It is our only server and does among other things DNS, DHCP, and AD. Lately we have been getting errors of no domain server found and had issues connecting to network drives. ...
0
votes
0answers
21 views

(Apache2 and Bind9) DNS not Resolving IP on Some Sites (Intranet)

I am going to start off by saying I am new to DNS and Ubuntu Headless Servers. However I am not new to computers and programming in general. I got a wild hair one day and built an Ubuntu Server ...
0
votes
0answers
14 views

How to access Mesos DNS running on VM from host

I have a host machine (Mac OS X 10.11.1) running virtual machines through vagrant. I installed Mesos DNS on one of the nodes, and modified resolv.conf on other cluster nodes, so I can successfully use ...
0
votes
0answers
27 views

Azure point-to-site VPN assign static IP

I'm connecting a single server at Site 1 with my Azure virtual network (10.1.0.0/24) via a Point-To-Site VPN connection (192.168.11.0/24). The problem is that each time the connection drops and is ...
0
votes
0answers
61 views

Internal name resolution issue in Windows server 2008-

I have 2 dc for my domain root and additional both of them working primary DNS Ad integrated, yesterday I had issues that the root dc DNS records are not appearing but the other dc DNS zone appears ...
0
votes
0answers
27 views

DNS sometimes returns internal IP outside

I have 2012r2 cluster, with active directory, DNS and DC. This cluster has internal private network (IP 10.1.x.x). That cluster DNS has parent external corporative DNS. Every node has also external ...
0
votes
0answers
36 views

Split horizon bind dns server setup

I have two servers. The first is a publicly accessible one held by my web host to which the domain example.com is assigned. The second server is my company's private LAN server which has bind dns ...
0
votes
0answers
151 views

Setting up softether with dnsmasq on aws server

I am following this guide http://blog.lincoln.hk/blog/2013/05/17/softether-on-vps-using-local-bridge/ to setup softether vpn in bridge mode with dnsmasq on an aws ec2 server. I got this working fine ...
0
votes
0answers
61 views

ASUS RT-AC66U WiFi Unit is blocking LAN DNS/DHCP Server

I'm using an ASUS RT-AC66U for WiFi. Decided to break out an old server to handle DNS/DHCP for local experiments. The problem seems to be that the RT-AC66U is (somehow) blocking the DNS Server. ...
0
votes
0answers
24 views

Secure only Dynamic DNS update don't work

Domain Controller - Windows Server 2008 R2 , it is also DNS Server but i have DHCP Server configured on Switch, which gives ip address to all Domain member computer. Here, problem is Secure only ...
0
votes
0answers
40 views

How to enforce dnsmasq to use internal dns for apex domain

We host example.com at Amazon and use Route 53 which works well outside VPN. From inside VPN we need to access to multiple internal subdomains, such as test.example.com, dev.example.com etc. which ...
0
votes
0answers
25 views

Bogus DNS apex records on Windows secondary server

We are introducing a DNS BIND 9 master/secondary setup to be authoritative for a zone to replace an existing Windows Server 2008 R2 DNS infrastructure. In the interim, the former Windows AD-integrated ...
0
votes
0answers
72 views

NGINX Dynamic hostname internal proxy

I have been working with nginx for a while now, however I cannot find how to do the task below, I have this record, pointing to my nginx server. x.x.x.x.cloud.example.co.nz -> My Public IP (NGINX ...
0
votes
0answers
30 views

DNS and Active Directory Settings

Let's suppose that my company own the domain corp.com and have it's own web server somewhere for customers to access our site using www.corp.com and I am currently setting up Active Directory using ...
0
votes
0answers
23 views

Exchange 2013 and IIS issues

I know that this question has been asked several times but I need to know the steps how to fix this problem. When we put up our server we registrate our internal domain to the same name as the ...
0
votes
0answers
186 views

How can EC2 internal (10.X.X.X) IP addresses be mapped externally?

On our work internal network we've got a link to an Amazon domain. One of the servers we're talking to is: 10.29.112.X. Now this address starts with 10, so I expect it is an internally mapped ...
0
votes
0answers
141 views

How to redirect DNS for local domain to external IP?

In our office we have a windows based domain network, domain.com. Additionally, we have an external website hosted on Amazon Web Services hosting a website at domain.com/www.domain.com for both the ...
0
votes
0answers
69 views

An ADDC for the domain could not be contacted

It's not first time I am installing AD server (2012) and connecting client to domain, but yes!! its the first time doing in AWS ec2 instances. The scenario is I have 2 instances, one with AD services ...
0
votes
0answers
223 views

Troubleshooting stub zone issues in Windows DNS

As per subj, is there an efficient way to debug and troubleshoot stub zone DNS resolution under Windows 2008 and 2012? We suspect sometimes nameservers specified in the stub zone cannot be reached or ...
0
votes
0answers
58 views

How to set up internal dns to copy public dns plus additional entries?

I have a windows domain example.com and a public domain of the same name. How do I set up my company DNS to resolve all the subdomains like the public DNS does, and more? Do I have to copy the entries ...
0
votes
0answers
79 views

Access servers from both side without hairpin router

We have a router that does not support hairpin NAT so our app server is not able to be accessed from inside. When using mobile devices we have to either change the app settings or computer host file, ...
0
votes
0answers
1k views

Cisco ASA not allowing DNS traffic to pass?

I have an ASA 5515 as my internet firewall. It is not allowing me to do NS Lookups from any internal DNS Servers, or clients. If I set my nslookup server to 8.8.8.8 (google DNS), I can resolve public ...
0
votes
0answers
82 views

nslookup gives timeout based on request - what gives?

I have the following strange problem with the DNS lookups in our Windows domain (dns service runs on the domain controller): from machine 'A': dns request for machines in the same network zone ...
0
votes
0answers
134 views

DNS server for DMZ

Servers are in a different subnet like 192.168.1.0/255.255.255.0 and there is a NAT for internet access. For example if one of my web servers ip is 192.168.1.100 inlocal then 5.5.5.100 will be my ...
0
votes
0answers
76 views

EC2: Persistent IP/Host for internal communication

I have a few servers on EC2 which intercommunicate using a RESTful interface. Currently, the addresses are saved in a configuration file which lists explicit IPs. This is prone to errors, because it ...
0
votes
0answers
382 views

Master DNS allows External Forward, Slave does not

We have a 2 master setup that was built poorly, so we want to downgrade the second master to a slave configuration, I try and run the conversion and it works well enough internal addresses, but when ...
0
votes
0answers
228 views

How do I set up DNS on a LAN so web users don't need to use http://localhost…?

I have deployed a web application to http://localhost:8083/MyApp on a local dev box. This is under the default web site. I would like to create a new web site and app pool, and have users access it ...
0
votes
0answers
133 views

DNS unreliable for local server; Using IP address works

I'm a programmer, but since I'm working at a startup it's forced me to do system administration. Specifically, I set up a continuous integration server running Debian and Jenkins. The problem is that ...
0
votes
0answers
2k views

Windows DHCP client and DNS suffix search list (option 119)

I'm trying to supply the dns search list to my windows clients to make the internal DNS naming scheme usable. Windows AD is not used so no GPO available. The ideal way would be to supply the dns ...
-1
votes
0answers
19 views

how can client register its dns record?

Iam setting up a small network where the client netboots and runs an init script. This init script will also need to setup a hostname that was entered during this machine's record entry into asset ...