0
votes
1answer
46 views

How to set up a domain name on a local network? [closed]

I have a Mac set up with MAMP and a dynamic website running. It works perfectly well on the Mac and I have edited the hosts file to be able to access it using a local domain name such as mysite.ext . ...
-2
votes
2answers
27 views

What is the difference between search domains and nameservers? [closed]

I've usually seen two kinds of entries in /etc/resolv.conf on certain servers. The domain-name-servers entry specifies which DNS to use for resolving hostnames to IP addresses. Recently I saw an entry ...
0
votes
1answer
40 views

Avahi How do I setup multiple servers that originally have the same hostname

Let me explain what I'm trying to do: I'm creating a Linux Distro Image that will be installed on a SD Card Setting the default hostname to myHostname.local This is all on my local network This is ...
0
votes
1answer
58 views

How to set DNS exclusively for a Network Namespace in Linux

I've created a network namespace in Linux. I thought there was a resolv.conf file for each namespaces created but it's not the case on my system. I don't have the following path ...
2
votes
1answer
51 views

DNS and IP Configuration for Windows Server 2012 DC

I am getting these errors: SERVER Error DNS: DNS servers on vEthernet (Intel(R) 82567V-2 Gigabit Network Connection - Virtual Switch) should include the loopback address, but not as the first ...
0
votes
3answers
114 views

Do I need public DNS records for the external IPs of our workstation NAT?

We have certain stakeholders who believe that the public IPs used by our workstations should have globally available DNS records, and that not having dns records would break some internet services. ...
0
votes
0answers
92 views

Windows 7 Pro - DNS Servers changed on DHCP-enabled workstations over weekend, not sure how

This morning I came in to our SOHO office (>5 users) to reports of the internet not working. I tried all the usual simple fixes like cycling switches (each user has a switch at their desk) then I ...
0
votes
2answers
60 views

Bind9 - local configuration is it important

I have a dedicated server and i have DNS and web server on the same server. To configure the DNS i have used BIND ... BIND comes with default configuration for localhost like 127, 0 , 255 and ...
-1
votes
2answers
33 views

Forward Clients to New Server using iptables

Clients are connected to a server A by connecting to the domain name address www.example.com:4444, where www.example.com resolves to the IP address of server A. Question: In order to provide a ...
1
vote
1answer
51 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
51 views

Access switch on the LAN from a WLAN connection Sonicwall TZ205

I have a setup like the following Modem >>> Sonicwall TZ205 >>>> Linksys 8 port smart POE switch >>>> Linksys LRT224 When I am on the LAN through a wired connection ...
2
votes
4answers
411 views

DNS A record pointing to private IP address [duplicate]

I own a domain. I will call it example.com. I want to set up a local BIND server on my private network. I have a box with the private IP address of 192.168.2.13 I would like to have this box named ...
1
vote
2answers
48 views

Local DNS fails when another interface is connected

I have a LAN with a Linux server running BIND for addressing of local computers. When a workstation is connected to the local network (where there is no Internet access), I can successfully address ...
0
votes
2answers
163 views

Superscope DHCP leases and configuration set up

Hello I wanted to see if someone could help with a network problem I am having. Right now we have a super-scope and scopes of 192.168.50.1 and 192.168.51.1, as of now both are activated but only ...
0
votes
3answers
44 views

Adding internal A-record to a second level domain [duplicate]

Just a though- if I add my internal IP address to A-record to a second level domain.com (assuming that I can't add it internally using AD/DNS) Will it work in my internal network? Theoretically, any ...
0
votes
2answers
66 views

My site cant be accessed from certain ISPs [closed]

I am on a VPS hosted by a company in Europe. I can access my site normally, many other people i know can as well. However in the recent days i have received reports from many other people that say ...
6
votes
3answers
677 views

DNS servers already use anycast. Will adding more IPs enhance scalability?

RFC 1034 requires us to assign at least two IP addresses for DNS servers. However, redundancy can already be achieved by a single IP address if we use anycast addressing. BGP anycast seems to scale ...
0
votes
3answers
239 views

Internet connectivity with Domain Controller

We have a Windows 2008 R2 Domain controller and every PC on the network has the IP address of domain controller set under DNS settings. Is it normal to have the Domain controller also be the DNS ...
0
votes
1answer
89 views

can I use DNS with private NAT addresses?

I want to build a service that dynamically creates VMs and assigns each VM a public DNS record which could be a full domain or a subdomain. Assume the VMS all live on a single host. The VMs will have ...
0
votes
1answer
81 views

WEB page loads only with second attempt - DNS issues

I'm having this issue that I've never run into and wanted to ask the community for help. I think I may be missing or overlooked something small. The issue I'm having is that I try to hit an external ...
0
votes
2answers
78 views

IPv6 address not available from outside

Since Hetzner pretty much doesn't give out any IPv4 addresses, no matter what the reason is, I decided to give IPv6 a try. These is the assigned IP address subnet mask IPs: 2a01:4f8:190:5112:: /64 ...
2
votes
0answers
83 views

Debian server - DNS stopped working after static IP reassignment

Due to changes in the LAN router, I had to modify the static IP of one of our servers. It still succeeds in finding the external world (ping google.com), but only temporarily - when I access one of ...
0
votes
1answer
541 views

DNSMasq vs Bind for simple dns url blocking

I am building a dns server that will block access to specific websites by returning an incorrect ip address for a domain. Currently I use DNSMasq to perform this however my list is quiet large and I ...
-1
votes
1answer
83 views

Some computers in my subnet do not recognize names of other pc's

I have two subnets: 192.168.0.1-255 192.168.50.1-255 Ewerything works via VPN (because physically computer from both subnets are in different locations). We also have active directory. Now, the ...
-1
votes
2answers
66 views

my master dns is running on Debian, can i configure rhel as slave DNS

I need to configure a slave dns on RHEL 3 , but my master DNS is Debian 7, is it possible to configure dns on such manner if possible kindly help me on this
1
vote
1answer
303 views

Configure an Azure VM for Dynamic DNS for 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 ...
-1
votes
1answer
32 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
48 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
146 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
129 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
280 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
47 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
147 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
34 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
107 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
93 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
82 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
52 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
68 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
77 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
387 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 ...
2
votes
1answer
52 views

How to automatically rewrite response records obtained using recursion in BIND?

I'm using Bind 9.9.4 on a hypervisor (lets call the hypervisor A) for VMs. The hypervisor has a VPN connection to a different host (lets call it B), which also has a public IP. The bind on hypervisor ...
0
votes
2answers
842 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
259 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
58 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
33 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
82 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
280 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
35 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
1k 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 ...