0
votes
0answers
21 views

Azure configure a VM for DNS name resolution across multiple Cloud Services

I am trying to setup an azure VM with proper DNS to allow multiple cloud services to communicate across cloud service boundaries. As I understand it, I need to provide my own DNS server. I do not ...
0
votes
0answers
8 views

Router unable to connect to internet [migrated]

Background : My ISP has a web based authentication scheme . So when I first try to browse any site , it goes to the isp login page. Once logged in , further requests to web pages work fine . ISP has ...
-1
votes
1answer
30 views

Is it possible to have both A record and URL redirect at same domain ? How to? [closed]

Let's assume I have example.org. I want to redirect all request (URL redirect) to google.com But I also want to have a A record on example.org that points to 127.0.0.1 So pinging example.org should ...
-2
votes
1answer
38 views

why return different sequence of ip addresses? [closed]

When I used nslookup to query google.com twice, I got same ip addresses but different order, why? These are return: Server: 129.173.1.100 Address: 129.173.1.100#53 Non-authoritative ...
0
votes
3answers
52 views

Pointing subdomain (from cpanel, hosting company) to an external public IP

How can I create a subdomain from a public IP and an existing domain name ? I have a website hosted by an external hosting company.: www.example.com I have a public IP (not real): 127.180.150.20 ...
5
votes
2answers
73 views

Why nslookup doesn't use mdns while ping do?

In dnsmasq.conf: address=/local/127.0.0.1 In resolv.conf: # Generated by NetworkManager domain example.com search example.com nameserver 127.0.0.1 nameserver 10.66.127.17 nameserver 10.68.5.26 I ...
0
votes
0answers
55 views

Some client in my network, sometimes can't ping Gateway and DNS server

I've a local network with 100-150 clients, one Core Switch and 10-12 switch that Switchs are connected to the Core Switch and clients are connected to switchs. In my network sometime some clients ...
0
votes
2answers
31 views

DNS log on Windows Server 2008

In a Windows Server 2008 R2 machine, with DNS Server Role installed in a local network, can I read in some log which queries the network hosts have made? To obtain some list of the visited sites. If ...
-1
votes
1answer
38 views

DNS how to dynamically bind subdomains to ip and port pairs [duplicate]

I'm using bind9 I have a zone file setup with a few subdomain A records. I'm wondering if I can create a subdomain record that points to an ip address on a specific port. I'm currently updating the ...
0
votes
1answer
22 views

What is a dns glue check?

I'm trying to troubleshoot issue with my DNS. I ran a report on dnsinspect.com FAIL: Found differences between information provided by your authoritative name servers and glue provided by the ...
1
vote
1answer
44 views

Connecting to api-verify.recaptcha.net from server programatically is very slow

There is a Windows Server Standard SP2 (possibly the server edition of Vista, as it is build 6.0.6002). There are a few webapps running on the IIS server. A few of them uses ReCaptcha validation. The ...
0
votes
2answers
64 views

Should you use a private hostname or public hostname as server hostname?

Assume you have a web server and database server, the web server is publicly accessible, while the database is only used by the web server, their DNS is web.example.com web-internal.example.com ...
-1
votes
1answer
55 views

Best way to map wild card subdomains to unique ports?

This is a best practices question. I'm working on starting a site that will have user generated subdomains that host user content. Think tumbler or stackexchange. subdomains like *.mysite.com where ...
0
votes
2answers
46 views

Map subdomains to local IP address AND being reachable from the Internet

I would like to do a mapping between subdomains and my VMs local IP addresses. Something that looks like this schema I've set up my DNS directly on my server (myserver.com for the example) and I ...
1
vote
1answer
43 views

Reverse Proxy Server causing Delays in Web Application

We have a reverse proxy server setup (IIS + URLRewrite) that forwards external requests to an internal web application. The reverse proxy simply rewrites the external request and forwards it to the ...
1
vote
3answers
70 views

What's solution for have reserved server for network problems [closed]

I have website.com and have web based application. Suppose we have network 1 that not stable some times users that not access to it; users switch to network 2 that i have clone of my web based ...
2
votes
3answers
155 views

Weird SSH Issue - Single host not allowing me to login via name

Can anyone explain this, because I have done everything from regenerating keys, to "leaving" and rejoining the domain (Centrify) for an SSH host that I can't seem to get to by a single client. All ...
0
votes
2answers
248 views

Bind9 SERVFAIL on Ubuntu 12.04 LTS

I'm trying to setup own dns server inside company, but i can't get it to work. I installed Bind9 on Ubuntu 12.04. I always get status: SERVFAIL, when i try using it. This is sample of one of my tests: ...
0
votes
1answer
99 views

Possible to resolve host name to an internal IP address from a central location?

I currently have the following setup: An internal server that has a web application running on it (ip addresss 10.1.1.47) Amazon Route 53 for DNS I would like users on my internal network to be ...
0
votes
0answers
49 views

Assigning LAN TLD's

Let's say that I am setting up an experiment of sorts with two or more DNS servers. These DNS servers will handle DNS requests for <domain>.lan tlds. Let's say that dns.lan points to the first ...
0
votes
0answers
32 views

Weird internet/network behaviour - certain sites not available

I've always had this problem where certain websites stop working in a browser. I can then just use another browser. Then at some point these sites would stop loading in all browsers. This could ...
0
votes
2answers
81 views

Configure two webservers on the same LAN

I am trying to setup the network for a small business using a network configuration I am new to. The business has one public IP(135.x.x.x) and wants to use separate machines for its website ...
4
votes
2answers
223 views

Why don't more organizations configure NAT U-turns/hairpins?

I asked a similar question a while ago, but foolishly referenced inside-to-inside NAT. Not being a network admin my terminology on the networking side of things was limited and lead to answers that ...
0
votes
1answer
28 views

How to configure DNS nameservers for Ubuntu cloud machines non-interactively?

I want to setup custom nameservers for my Ubuntu cloud instances (which have static IPs). When I try to edit /etc/resolv.conf, I see that it gets overwritten on reboot. If I try to set it in ...
1
vote
2answers
761 views

suse 11sp3 - cant ping/resolve own hostname

i have a local virtual machine (running on a locally installed vmware workstation, networking set to NAT) on which i have installed suse enterprise 11 sp3. the machine is set to get an ip address ...
0
votes
0answers
31 views

making a software router for my private network [duplicate]

give me suggestion on this problem. I have 2 nic cards public ip (eth1) and private ip (eth2). now i have a linux system having centos 6.4. I made this system software router so can access internet on ...
0
votes
0answers
60 views

can i forward internet from 2 public ip to 1 single private ip (network)? [duplicate]

I am rahul and i am new on centos 6. can anyone tell me .. is it possible suppose i have 3 nic cards in the same system and i have 2 nic cards for public ip(Eth1 and Eth2) and default Ethernet for ...
0
votes
0answers
26 views

Can't connect to network machine by the name specified in the DNS

I have a virtual machine in Hyper-V using an external network switch. In the network there is a Windows 2008 R2 server which is DC, AD and DNS. In the vm IPV4 settings for the NIC I'm specifying the ...
2
votes
2answers
78 views

DNS advice / failover

We're registered our domain at Network Solutions. They went down a month ago and our DNS was down. We're trying to find a way to mitigate this issue. Our domain stops resolving and we have to send ...
0
votes
1answer
32 views

Can we have two or more website hosted on a computer with IIS [closed]

I have an Virtual machine which has R2 2008 with an website which just works fine. I was wondering if there's any way we could host multiple websites on that server. Since its virtual we can add ...
0
votes
3answers
180 views

My domain is not visible to world

How I can make my myself hosted domain visible to world? Question Details: I have a domain donotrape.me which is not visible to world. My System is Debian 7 64BIT, Bind9, Apache. Debian firewall is ...
3
votes
3answers
945 views

What is DNS Delegation?

In an answer to my previous question I noticed theses lines: It's normally this last stage of delegation that is broken with most home user setups. They have gone through the process of buying a ...
1
vote
0answers
67 views

Strange DNS behaviour over VPN

We have a small branch with few computers with few computers connected via the Internet to our central building. We don't use site-to-site, but dial-in to the Cisco router (we use ShrewSoft as a ...
3
votes
1answer
226 views

DNS lookups with/without recursion in NSLOOKUP

I am playing around with NSLOOKUP trying to learn about recursive DNS lookups. I am looking up a bogus host name and I seem to be getting the same results whether I enable or disable recursion. With ...
1
vote
2answers
136 views

Resolve avahi hostnames via DNS

I would love to resolve avahi hostnames via DNS: I connect to the office VPN via PPTP but Avahi refuses to run on POINTOPOINT interfaces. I just want to resolve avahi hostnames via the DNS ...
2
votes
1answer
582 views

DNS Issue Windows Server 2012

Background: I have a windows server 2012 install with AD, DNS and DHCP. I also have a netopia router/modem providing my WAN access. My router/modem is configured with DHCP off and connected to a 24 ...
1
vote
2answers
101 views

What DNS servers to use with multiple connections

I have a complex configuration of multiple ADSL connections from multiple ISPs being load balanced by a Draytek Vigor 3300V+ My question is what DNS settings should I use. Should I use the ISP ...
4
votes
1answer
83 views

Turning Dell laptop network drivers on with no network cable plugged in?

I have a rather nonstandard installation - Windows Server 2008 R2 on a Dell Latitude E6520 laptop. I want the Windows DNS server to run when the laptop starts up, but it looks like the network ...
9
votes
3answers
2k views

Exposing multiple servers behind NAT using a single public IP address

This is a Canonical Question about NAT and DNS I'm currently trying to set up a network with a DMZ containing a web server and an e-mail server separated from the Internet by a network address ...
6
votes
2answers
309 views

How to address an EC2 instance from both inside and outside datacenter?

I'm trying to find a good way of being able to address my EC2 database instance from both inside and outside of the datacenter. Other EC2 instances need to be able to call into it, and other clients ...
1
vote
1answer
73 views

Why would I be able unable to access a website from my local network when the site is widely available?

Requests to several websites on Media Temple's Grid Server (shared hosting; more than one account) are timing out for me today. Everything was fine earlier this morning, and for no apparent reason ...
0
votes
1answer
24 views

Server 2008 have no internet access

Hi I have a windows server 2008 which is acting as the only DNS and DC in my network. But the server is not connected to the internet. So that im using the public DNS servers in all the client ...
0
votes
3answers
2k views

nslookup fails but ping succeeds for nonexistent domains

I have two different FreeBSD servers (different hosting companies), both exhibit this same behavior: They pick a specific IP address (216.239.120.238) for every domain that does NOT exist. nslookup ...
0
votes
3answers
415 views

Does changing the Primary DNS Suffix of a Windows Server 2012 machine require a reboot?

My server has the following IP Addresses: 127.0.0.1 192.168.100.103 208.nnn.nnn.180 199.nnn.nnn.29 It's FQDN is mymachine.example.com. However, calling ...
0
votes
2answers
40 views

After DCPROMO, going to URL of website doesn't work (same as domain) due to DNS issue [duplicate]

I just created the office PDC and its the same domain name as our actual website. The problem I am having is the DNS Server does not point traffic to the correct IP address. I've experienced this ...
-4
votes
1answer
138 views

Is DNS a Stateless Protocol? [closed]

Is DNS considered stateless, if yes why so? Knowing that the local DNS for example once it learns the a mapping it caches the name to address translation for some time, doesn't that qualify DNS as ...
0
votes
0answers
71 views

Can I setup DNS on new server and “flip the switch” later?

I would like to know if setting up DNS/BIND on a new server will mess up my old server. Here is my situation: example.com - Main server used for hosting - Domain registrar currently points to ...
-1
votes
1answer
48 views

Recognizing when my machine has the IP of someone else [closed]

From times to times my computer is very slow in accessing internet or going to the network. Few colleagues of mine suggested that my machine might have the same IP of another one and this would cause ...
0
votes
0answers
208 views

Bind querys public nameserver gets private IP as answer

Currently I have a dnsmasq server (192.168.0.53) answering with local IP addresses for queries to a public domain. Facing internet there is an old (really old) bind server, master for example.com. So ...
2
votes
3answers
109 views

One Alias to point to multiple IP addresses

The problem I have is the following: I have distributed application (3 geographically spreader nodes), which on request returns large data sets. In order to reduce the network traffic, I need to ...