Domain Name Service, a method of converting a textual doman name to an IP address

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111 views

Domain Name Resolution (DNS) stops working randomly

While browsing and using the web, DNS stops working. Open web-chats like Google Hangouts keep working, but opening new websites, Skype, and others are stuck to "Resolving host name". This happens ...
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185 views

How do I really (dig) flush the DNS cache on OS X 10.9?

I'm on OS X 10.9, according to support.apple.com I can flush the cache with sudo killall -HUP mDNSResponder Unfortunately this does not really refresh my DNS cache at all, also not like this: ...
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6k views

SSH'ing with just a machine name on internal network: nodename nor servname provided, or not known

Yesterday I was able to ssh into my development box by using the machine name. Today, I can't. I can nslookup and use chrome to navigate to my box using just the machine name. ping and ssh do not ...
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538 views

Preventing google search for custom top-level domain

How can I prevent safari to redirect the user to the google search page for addresses with custom top-level domains? Given an address of the type http://application.test where test is a primary zone ...
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201 views

Yosemite Server / Domain Configuration advice

I'm configuring a mac mini server (latest Yosemite) and I'd like some advice/guidance. I have a registered domain in use for my website, mail and some subdomains – all externally hosted. I'd like to ...
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96 views

Added website with a subdomain on Mountain Lion server couldn't be found on other machines

My server is accessible via example.com and I want my website to be accessed via sub.example.com. I added a website to Mountain Lion server with domain name that's actually a subdomain; ...
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123 views

Strange domain name appears in Sharing Preferences, source unknown

First of all before anyone asks, I have already set my DNS name in the Terminal with scutil, which is reflected on the Terminal prompt and returned by the hostname command. I also understand that this ...
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400 views

not resolve local domins from /etc/hosts

Somehow I have a problem (previously everything was ok), hosts form /etc/hosts can't bre resolved. I have local domain in /etc/hosts, like 127.0.0.1 test.local It's loading in browser well but too ...
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407 views

Browsing to a nested subdomain resolves wrong page

Our corporate network has some web applications hosted in a nested subdomain hierarchy. A "subdomain's subdomain", as you will. For example: Root-> http://*.mydomain.com (resolves to: 192.2.2.200) ...
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2k views

Can Time Capsule/Airport (4th gen) serve local DNS?

I just got a 4th gen Time Capsule for my wife to use as her own backup server, and I'm potentially interested in using it as the main router and Wifi AP on my home network. My current router and AP is ...
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246 views

Lion Server - DNS crashing

Every now and then (once per week?), my Mac Mini (2011, 8GB RAM i5) running Lion Server, stops the DNS server bringing my network to a grinding halt. The only way I have found to get it to restart is ...
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294 views

DNS gone after wakeup

I'm having problems with the DNS resolution after a wakeup from sleep. The system I'm running is Mac OS X Lion 10.7, and I am properly connected to my Wifi. When I issue a ping google.com in the ...
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38 views

Getting high ping when MacBook Air is connected to Wi-Fi

I have a 13" MacBook Air with Yosemite 10.10.2 installed: As soon as I connect it to my WiFi, I get a very high ping (1600 ms) on both my machines: Windows 7 PC and my MacBook. As a result browsing ...
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47 views

Custom nameservers, /etc/resolver/ and SRV records

I want to use a DNS server on my machine to resolve lookups for all names ending in .dev. I've created /etc/resolver/dev to do this, and checked that it works for A records: › dscacheutil -q host -a ...
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22 views

Macbook Pro 10.10.5 Can Only Connect to Large Sites like Google, StackExchange, Wikipedia

This strange connection issue has been very stubborn. In short, after every reboot I can access the entire internet for a short period of time. After a time (say 30 minutes) all but major websites ...
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59 views

How can I get OS X's Dynamic DNS client to register a local IP address?

Background: I'm essentially re-creating Back To My Mac. I have a VPN set-up on my VPS, handing out addresses in the 10.x.y.0/24 range, with BIND running and accessible at 10.x.y.1. There's a zone ...
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68 views

Device name on router is different than OS X hostname

There are tons of questions about changing a Mac hostname, and while I went through most of them, I could never find this nuanced answer: Why do routers always seems to receive the first hostname ...
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56 views

VPN connects, IP won't change : traffic issue

I spent too much time on this, so I'm asking you guys if you can figure it out. I can connect to my VPN, but my IP won't change (I can access the internet) and since P2P isn't working I guess the ...
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33 views

DNS resolves incorrectly, even after purge

After changing a CNAME record on my DNS server, I am seeing issues with the DNS on my Macbook Air running OS X 10.10. Other computers on the same network resolves to the correct, new IP. $ host ...
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53 views

OSX Flush DNS without sudo

I have a Mac that keeps messing up its DNS (this may be a wider network issue, we have windows clients that are having problems too). Whilst I try to understand the DNS issue I'd like to set an 'icon' ...
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56 views

How do I change the hostname resolution sequence in OSX?

I am a new Mac user with lots of Linux/UNIX experience. My MACBook gets its IP using DHCP. The OSX version involved in my question is 10.10.3. I am having a bit of a problem figuring out how to do ...
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529 views

yosemite DNS resolution woes over IPSec tunnels / VPN

I am connecting to a Cisco IPSec tunnel from MacOS to a hosted pfsense box that is running a number of other IPSec site-to-sites happily, and the DNS resolution is not working. I also am in full ...
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23 views

Mac OS X Panther Server DNS settings

How do I change change the DNS time to live, TTL, settings using Mac OS X Panther Server?
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1k views

Authentication Server could not be contacted

Our OS X Server machine has had no issue at all with being in the Windows AD domain right up until we updated it to OS X 10.10. Now it behaves bizarrely, refuses to connect to our Exchange mail ...
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174 views

Does the Airport Extreme support wireless roaming and guest network?

I'm looking to purchase two Apple Airport Extreme base station units to use as wireless access points only. They will be connected via Ethernet to my network closet. Internet gateway is handled by my ...
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85 views

Changing /etc/hosts not getting affected

I have added the following line in my /etc/hosts: 127.0.0.1   myapp.corp.com so my full /etc/hosts looks like: 127.0.0.1 localhost 127.0.0.1   myapp.corp.com 255.255.255.255 broadcasthost ::1 ...
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136 views

Back to Mac service when using Unlocator DNS

I have a Mac Mini at home that I would like to connect to using the "Back to my Mac" service. Normally it works just fine. But if I update my Apple Airport Extreme with DNS from unlocator.com (or ...
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182 views

DNS Lookup Failure on Terminal Only (Mavericks)

I recently did a clean install of Mavericks, and ever since I have, I've been having intermittent DNS lookup failures on the terminal only. Browsers work fine (Chrome, Safari). But nothing works ...
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1k views

How should I configure my VMware Fusion VM network connections?

I've been a long time user of VMware Fusion on my iMac and I've just bought a MacBook Pro to allow me to work on projects whilst I'm away from my desk. On my iMac, I have a few VMs, each with their ...
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335 views

Resolve domain name using the internal IP when inside the intranet?

I want to access a web server using the same domain name while I am inside the intranet but a different IP. Let's say that I register into a public DNS: mysrv-public.example.com public-ip ...
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6k views

DHCP and DNS fail to work in Mac OS X 10.8.2, still work in recovery mode

I've been most unfortunate to see my mid-2012 Macbook Air 11" running Mac OS X 10.8.2 stop properly receiving DHCP leases AND resolving DNS names to IPs. I know, there is 10.8.5, and Mavericks that ...
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261 views

Does Apple's iOS have a backup DNS server configuration?

Yestderday I experienced something interesting while setting up a Wi-Fi access point. The access point was connected to the Internet via a local modem (gateway), which had NO DNS server address ...
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158 views

DNS resolution temporarily failing

Macbook air mid-2012 w/ Mountain Lion. Whenever I wakeup from a long sleep and also on some random moments when it's on, i get DNS resolution failures for every server, with nslookup saying ;; ...
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1k views

AirPort Extreme, OS X Server, DHCP and Dynamic DNS

I have a AirPort Extreme and OS X Server (Mountain Lion). On my local network, I have a number of OS X, Windows, Ubuntu and other machines using DHCP to obtain network addresses. Almost all ...
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58 views

named (bind DNS) not quitting

I am trying to quit named, but it keeps popping up. I tried removing the configuration an key files, unloading it from launchd, you name it. Yet it keeps starting. How do I kill it permanently?
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201 views

DNS issue with Microsoft Sharepoint

I am having this issue on my MacBook Air but not on my Windows machine or even my Windows virtual machine on the Macbook Air. Client uses Microsoft SharePoint for documents and logs. I was given two ...
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773 views

ping and browsers do not seem to use local DNS server? (or: mDNSResponder looses local dns server?)

(1) Stack Info DNS Server CentOS 5.6 64bit running dnsmasq 2.45 on IP 10.9.8.2. Serving as DNS-Only Server using it's local /etc/hosts. /etc/resolv.conf on this machine has Router Draytek ...
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81 views

Why opening a ssh connection to Lion is taking too long?

Why is SSH taking too long to open when I SSH to Lion. I have to wait ~30s to see the Password prompt. The DNS is working on the Lion server.
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42 views

Ridiculous amount of reverse DNS lookup request - *.in-addr.arpa

I'm using OpenDNS as an external DNS server. Recently I've logged in to check dashboard. I've discovered that I'm sending a ridiculous amount of DNS requests to *.in-addr.arpa - reverse DNS lookups ...
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20 views

Internet fading in and out OS X?

I have recently been experiencing a new problem with internet reliability on OS X. We have two OS X El Capitan desktops. My mom's mac is in the office and receives an ethernet connection and that ...
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45 views

Problem with IPsec on Mac OS X 10.11

We have configured IKEv2 VPN for mobile clients on pfSense. Server is configured for pushing DNS setting to clients, but after connecting my MBP it can't resolve local hostnames (FQDN and shortnames ...
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49 views

macbook not working with home wifi

My home wifi works with everything but the macbook(2015 early, osx el capitan). My mac works with other wifi networks but not my home wifi. It's an arris tg862 router. Heres what happens: I open up ...
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29 views

How to block a specific hostname when shadowsocks is activated?

Modifying the hosts file is the simplest way to prevent my computer to visit a specific hostname. When I start using shadowsocks' global mode, however, the method of modifying hosts doesn't work any ...
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159 views

How to turn off Bridge Mode in Airport Utility?

I want to shutout some websites on all my devices (Macs, iPads, and iPhones) in my home network and after I searched for it, I ended up using a service called OpenDNS. However, they instruct me to ...
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46 views

How to manage internal and external DNS for the same zone?

I have a Mac Mini in the office that I just setup to host the zone example.com. I've added A records to several hosts running here. Local DNS works great so far. On Digital Ocean, I have two name ...
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277 views

mDNSResponder no longer resolving DNS with avahi-daemon

Since upgrading to El Capitan, I can no longer resolve DNS entries via mDNS if the host is a Linux system running avahi-daemon. For example, I have a server that's available at media-server.local. ...
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32 views

Globally change DNS setting regardless of wifi network

I'd like to point my DNS at Google's public DNS servers. The instructions involve going to System Preferences -> Network -> Advanced and editing DNS settings. However, this seems to be specific to ...
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41 views

iOS Network Link Conditioner - difference between “in delay” and “dns delay”?

In the Network Link Conditioner profiles, What is the difference between in delay, out delay, and dns delay? I want to test how my app behaves when it makes a request, and the requested server takes ...
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93 views

Need help with OS X server. I can't get it to resolve correctly

Ok. So I have a static IP set on my router (using fiber so no modem). I have no idea what is going on. but I can't get it to resolve outside the network. Background: Static IP :xxx.xxx.xxx.9 ...
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88 views

Why is MDNSresponder Failing to Perform DNS Queries for Custom TLDs?

I'm on Yosemite 10.10 and continue to have some DNS problems post-reversion to mdnsresponder from discoveryutil. Use of tcpdump to monitor DNS requests indicates that a number of GUI applications ...