-3
votes
0answers
28 views

Confusion in using branded ns [on hold]

Hey guys I have a website running on digital ocean server. They have give me to use the ns like: ns1.digitalocean.com and ns2.digitalocean.com. But what I need is to use branded name servers. I went ...
-2
votes
0answers
29 views

DNS server won't work! [Bind9 running on Debian 7; virtualized through Proxmox 3.1] [migrated]

First I'd like to thank everyone in advance for helping me - communities like this are exactly what amatuers like myself need when faced with perplexing issues. I've recently begun virtualizing ...
1
vote
1answer
26 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
26 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
361 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
43 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
95 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
30 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
60 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
633 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
115 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
79 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
51 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
63 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 ...
1
vote
0answers
67 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
278 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
61 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
64 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
193 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
46 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
102 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
114 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
202 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
45 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
102 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
30 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
79 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
84 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
75 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
61 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
73 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
298 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
643 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
190 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
55 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
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
261 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
33 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 ...
0
votes
0answers
32 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
61 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
83 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
33 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
217 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 ...
4
votes
3answers
2k 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
76 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 ...