Use Google's Public DNS Server To Fix Apple TV Streaming Problems

Many people have been having a streaming problem with the Apple TV - especially with Netflix. In fact, it's often the most popular topic on this forum. After having the same problem off and on for two years, I finally figured out the following solution. It uses Google's public DNS service instead of your ISPs DNS.
1. Navigate to Settings >> General >> Network and select Configure TCP/IP.
2. Select “Manually” next to Configure IP.
3. Dont change the IP address or the Subnet Mask and Router Address. Just click "Done".
4. Set the DNS Address screen with the following: 008.008.008.008 and click “Done.”
You should now be able to stream more smoothly on your Apple TV.
This problem is probably caused by a bad streaming server somewhere on Netflix's CDN (Content Delivery Network). The DNS points your Apple TV based on location. By using Google's DNS, you get a different streaming server. That is, of course, a wild guess and is not verifiable by me. But, it makes sense so I'm going with that.
If this works for you, please buy a cup of coffee for a complete stranger or some other selfless, random act of kindness.

Welcome to the  tv Discussion Forums.
Barring interference to the network (which is probably unlikely but not totally out of the question) I'd agree that your problem seems specific to one mac. IMHO reinstalling an OS is more often than not a lazy mans way of saying they can't be bothered to look for the problem and totally unnecessary so far as I am concerned. I don't believe any version of itunes has been a problem for the tv, although there have been the usual problems posted that usually accompany any upgrade (these are more than likely due to updating over damaged files).
Reinstalling itunes will replace the application but not many of the associated preference files that are more likely to be a problem than the application itself. Rather than reinstalling itunes, I'd try creating a new user and try itunes in the new user account to see if the problem persists.
You could also create a new library in the original user account and see if you have similar problems with that library.
Check your network settings and compare them to the other macs that work OK, check for proxy servers and DNS addresses.

Similar Messages

Use of Public DNS Server

I have an iMac, Mac Mini and a Macbook Pro connected to a Airport Extreme Base Station. I normally use a Public DNS Server and I am not sure where to put the DNS URLs. Do I put them on the individual computers or is there somewhere in the Airport Extreme Base Station that they go? where ever they belong please provide location and instructions. Thanks.

Configuring the AirPort Extreme with the DNS makes it so that you do not have to configure each individual computer on the WLAN, the DNS settings will be handed down to the devices when they are given their internal IPs, but as long as the base station does not have a competing/conflicting DNS setup, configuring each individual device, as suggested by Carolyn, works also.
However, something strange can happen sometimes when you use a public DNS setup. I use the one Carolyn suggests, OpenDNS, but I cannot access any of the webpages of my ISP with this configuration. I have Todo en Uno (All in One), a service that provides cable, telephone and internet service from my local cable company, CableVisión. So with the OpenDNS setup I cannot configure the digital options for my telephone service, such as blocking and unblocking Int'l long Distance calls. I have to remove the OpenDNS setting to do so. But I created a work around using Locations in the Network settings. I have one Location with my ISP's DNS settings and another Location with OpenDNS settings. I can quickly switch between the two when I need to access my ISP's website.
Dah•veed

Disapointed with upgrade cant use google toolbar when will this be fixed??

I upgraded to the newest firefox after being asked a gazillion times
Now i cant use google toolbar, when will this be resolved?

Google needs to update the Google Toolbar program for Firefox 5.0.
The Google Toolbar '''7.1.20110512W''' version does work in Firefox 5.0 by using the Compatibility Reporter extension, I tried it myself due to the large number of postings about GTB problems. <br />
https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/

Internal and Public DNS conflict breaks mail

History:
We set up a new Mac Mini Server to replace our existing Server. The Mac Mini Server is setup behind a Time Capsule, which acts as our router and DHCP server. It also acts as our firewall on the public IP address and forwards mail to our internal server. Our situation is almost identical to the example situation on page 18 to 19 in the 'Getting Started' guide.
Our ISP acts as our DNS server and they host our public website. They also used to host our mail, but we have now moved the mail to our new in-house server. We asked our ISP to update their MX records to point to our static public IP address. Public DNS records for server.mydomain.com also resolve to this IP address.
When we originally set up the new mac mini server, the ISP had not yet updated the MX records. I am wondering if this affects how the Server sets up DNS on the local server machine?
Issue:
The local server machine on the local LAN is called server.mydomain.com, which resolves via local DNS (hosted by our server) to the server's internal IP address. (The local DNS server was setup automatically by the Server during initial installation / setup.) This conflicts with with public DNS records which identify server.mydomain.com with our public IP address at 205.200.19.225. This somehow causes confusion for the server which consequently seemingly randomly resets our domain (mydomain.com) and host name (server.mydomain.com) settings under Mail settings - which breaks our mail service. (We then edit these to the correct settings and all works again.)
I spoke to an Apple tech and they advised that we reinstall the Server operating system, using a local server name that differs from the public name. e.g. server.mydomain.lan (local) vs. server.mydomain.com (public).
*This may seem like a dumb question*: Would it be easier to keep our local host and DNS set up to server.mydomain.com and then rather have our ISP change the records for our public address / IP to mail.mydomain.com or public.mydomain.com? If we could make the change via the ISP's records versus our own, then it would save us a lot of work.
*A second potentially dumb question:* Since we rely on our ISP for DNS name servers, could we delete / stop the local DNS server for the local network and just use straight IP addresses instead?
*Plan of Action:*
Assuming that there is not an easy fix via the ISP's DNS records, then I'll reinstall the operating system and use server.mydomain.lan as the local machine and domain name. If I do this, then what should I be using as the domain and host name settings in mail? .com or .lan?
Should there be any need to manually configure DNS settings to make Mail work?

Mr Hoffman and Corbywan - thanks for the interesting and educational discussion. I must admit that I am still a bit confused and would appreciate any further help in understanding this issue!
*My situation:*
- Server on a LAN, which sits behind a Time Capsule router.
- The Time Capsule router serves DHCP and Internet to the LAN and sits on our public static IP Address.
- Our ISP has set up MX and domain records to forward public requests for our domain to our static IP address.
- Time Capsule acts as our firewall and forwards Mail and other incoming services to our internal server via port forwarding.
- Local DNS service is provided by the local server so that it can provide services to the local network. Non local requests are forwarded to the ISP DNS service.
*The problem*
We seem to have established that Snow Leopard Server breaks when the internal domain name matches the public domain name, because of conflict between the internal and public DNS which resolve to different IP addresses for the same domain.
*The solution*
I am looking for the easiest and most basic way to fix this problem. My understanding is that the simplest would be to reinstall our Snow Leopard Server to a new and different local domain name.
I am thinking of using server.example.lan for our local LAN domain name - which would be resolved to our private IP address via local DNS on the local server. I would be keeping server.example.com for our public domain name - which would be resolved to our public IP address, which would be forwarded from the Time Capsule to the internal server.
Now where I start getting confused is this: If Snow Leopard Server requires a Fully Qualified Domain Name to do things like send mail, then do I need to register my internal domain name? And how would this resolve from a public DNS server to the internal private IP address? Or is it more an issue where as long as the internal (albeit 'fake') domain name does not conflict with an existing public domain name?
*Other items:*
After setup, I will verify that Snow Leopard Server has setup our local DNS correctly for local DNS service.
If I understand correctly, I would set up Mail Settings - 'Domain Name' as the local domain name: i.e. example.lan and I would set up the Host Name as server.example.lan - is this correct? Would this work if these are not FQDN?
How does the mail server reconcile these local domain names with the public domain names? I assume that I need to check the box at Mail - Settings - Advanced - Hosting: "Include server's domain as local host alias" ? Or would I manually add an alias to the Local Host Aliases under the same tab?
Thanks!

DNS server isn't responding to certain IPs

Hi,
I have a laptop with DNS problem. It ping any internal ip but domain controller(my DNS server). if I change dns server to google's public dns, it works but I want to use my own dns server.
If i change IP address it works. If I give that IP address to another computer, the computer gives the same DNS error. So I figure out that this IP address is the problem and I have 3 IP addresses like this with the same problem.
How can I find out if My dns block that ip or How can resolve this issue?
Thank s in Advance.

Hi Mugurlu ,
What do you mean by saying :” It ping any internal ip but domain controller(my DNS server). ” .
If you mean it can’t ping the DNS server .
We could check there is route from clients to DNS server .And there is reverse route from DNS server to the clients .The firewall of DNS server should allow the network traffic .
If you mean it can’t resolve names .
First we need to ensure the firewall on DNS server allow the network traffic between server and the specific addresses .
Then we could use network monitor on DNS server to check if the query packets reached or not .
If not reached , we could check if there is route from clients to DNS server .
If reached and server responded ,we need to ensure there is route from DNS server to clients .Then we could use Nslookup on client to analyze the process .Open
Command Prompt ,type nslookup and type
set d2 .Then type a name ,we could find out the problem through the process .
If server doesn't respond ,we could enable debug logging on DNS server to analyze the process .Open
DNS Manager ,right click on DNS server and click Properties .On
Debug Logging tab ,select the box .
Here is the guide for Nslookup :
Nslookup :
https://technet.microsoft.com/en-us/library/cc940085.aspx
Best Regards,
Leo
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

How to install external DNS Server on Windows server 2008?

After 2 days hard working I'm confused about DNS servers.
i registered a domain name and want to host my own DNS for my website.
i install DNS Role and IIS on a windows server 2008 R2 and config them all and set 127.0.0.1 and 8.8.8.8 on my network interface on my serve .
on my server i have 2 website
dns1.mysite.com //to set it on my domain panel as name server
mysite.com //hosting
now everything work on my server , when i type mysite.com at my web browser i can see my site.and when i ping mysite.com it reply my server static ip.
but on internet it does not work. i mean if you type dns1.mysite.com or mysite.com not works and i got request time out when i ping theme.
at this state if you set my server IP as DNS server at your network adapter(interface) everything work great.
how can i have a DNS Server like that hosting using on our domains like dns1.godaddy.com ?
i should register my DNS on any where like a organization or website or...?

For the local nic you should _always_ configure dns servers that have the same scope. I think 8.8.8.8 and 127.0.0.1 will never have the same scope. Note that the configuration of multiple dns servers is only there for failover purposes. If the first one
is working, the second one is never used.
You should create a zone on your dns server matching your domain, and you should request your registrar to make your server authorative over your zone. Some providers let you configure this yourself (on a weninterface), so please consult the documentation
provided by the service provider/registrar. If in doubt, they will be the primary contact point as the required configuration depends on theirs.
Note that when you want to host a public dns server, the server should be reachable from the internet on port 53 tcp/udp and you should follow guidelines for serrver security very strictly.
Also be aware updates on dns servers need some time to be applied worldwide due to caching that has to expire and zone transfers that might be needed. be patient.
MCP/MCSA/MCTS/MCITP
Thanks SenneVL for your nice answer .
my server IP is static and reachable from Internet,then why when you add my server ip on your network adapter as a DNS it works and you can type mysite.com on your browser and see my site?
you said "Also be aware updates on dns servers need some time to be applied worldwide due to caching that has to expire and zone transfers that might be needed. be patient."
how long it takes?

DNS server provided by VPN to Mountain lion doesn't work

We are producing proprietary VPN server and client. After upgrade to Mountain lion the DNS stopped working. I noticed that if_index is now in the dns resolver decription when scutil --dns is used for listing. This if_index refers to the physical network interface. So I tried to send public DNS server from our VPN server. It helped because the DNS resolution is done over physical interface. Problem is that we need to use private DNS server, that is the purpose of VPN. The only suspicious piece of code is
str = SCDynamicStoreKeyCreateNetworkServiceEntity(0, kSCDynamicStoreDomainState, gs_dynamicCache.m_serviceId, kSCEntNetIPv4);
whic copies IPv4 settings from primary IPv4 sesrvice. Can you recommend good article where I would find and understand DNS reolution guidelines for Mountain lion? It is impossible to find something about that if_index. And we are pretty sure that it works correctly on Lion.

cima.m wrote:
We are producing proprietary VPN server and client.
Please don't. People absolutely detest those things. MacOS X includes perfectly good VPN clients that work far better than any proprietary VPN. Why don't you just change the server to work with what ships with MacOS X?

Can't specify DHCP DNS server ip with a 255 in it

I tried to add 64.102.255.44 a valid ip addres and a public DNS server to my DHCP configuration but the web interface says ip must be in the range 0-254. How can I report this bug?

Not sure which router you have, but I have a WRT54G V5 that I was able to add that IP address as a Static DNS Server without a problem....
You may need to call the Linksys/Cisco tech support number or use an online chat to report the bug...
Tomato 1.25vpn3.4 (SgtPepperKSU MOD) on a Buffalo WHR-HP-G54
D-Link DSM-320 (Wired)
Wii (Wireless) - PS3 (Wired), PSP (Wireless) - XBox360 (Wired)
SonyBDP-S360 (Wired)
Linksys NSLU2 Firmware Unslung 6.10 Beta unslung to a 2Gb thumb, w/1 Maxtor OneTouch III 200Gb
IOmega StorCenter ix2 1TB NAS
Linksys WVC54G w/FW V2.12EU
and assorted wired and wireless PCs and laptops

Does DNS server cache forwarded request responses?

Hi,
Please excuse my ignorance. I am new to OSX Server and DNS. I setup OSX Server on my Mountain Lion system and configured the DNS server. It forwards requests which it cannot resolve to my service provider's DNS.
I am wondering if the responses to those forwarded requests are cached by the OSX Server so that the next time a request comes through they can be handled locally?
If they are, is there a way I can see what the DNS server has cached?
Thanks.

There are caches all over.
OS X client caches DNS responses.
See the command-line dscacheutil tool for poking around with that.
OS X Server DNS server also caches responses.
The BIND9 rndc tool is used for poking around in the ISC BIND9 DNS server, as is included with OS X Server.
sudo rndc -p 54 dumpdb -all
TCP port 54 is the management port used by default in the OS X Server version I've checked, where other installations of BIND9 will use TCP port 953 for that. To confirm the port, go have a look at the named.conf file for the "control" declaration. That file is usually either in /etc/named.conf, or it can be stored in /library/server/named in some OS X Server versions. Once the rndc command completes, go look in the directory where named.conf resides for the file named named_dump.db. That's a text file with the dump.
If you want to learn the innards of DNS as implemented by recent ISC BIND servers, acquire a copy of Cricket Liu's DNS and BIND book. The 5th edition was current, when last I checked.
Barring cases where the upstream provider offers DNS-based filtering or such, forwarding requests is usually an extra hop in the DNS translations that — unless you're hitting the same domains as other folks on your server — might not pay off. If the translation isn't in the ISP's DNS caches, then the usual series of queries of other root and authoritative DNS servers will ensue; you've added a hop.
If you do want to use a gonzo-scale DNS server as a forwarding server — I'd expect higher-scale and larger caches and likely also higher-availability than what most any other ISP is likely running — then Google DNS servers are available at 8.8.8.8 and 8.8.4.4.
Or just eliminate the forwarding servers.

Can't override DNS Server settings - can only append!

See this thread for a similar question:
http://discussions.apple.com/thread.jspa?messageID=3555096
I have also filed this with Apple (Problem ID 5159216). Here is the text of the report (with a few bits removed - not crucial to understanding the report).
If anyone has suggestions/clues to resolve, please advise. Thanks!
Summary:
This problem concerns AirPort Extreme (802.11n) at revision 7.1. I will summarize with a comparison between AirPort and MacOS X.
MacOS X and Airport Extreme (referred herein as "AE") both permit editing of DNS server settings whether in DHCP or Manual mode.
When MacOS X DNS server settings are set manually by the end-user, the new server IPs are used (good). When AE's DNS server settings are overridden by the end-user, the new server IPs are NOT used (not good)! Rather, the DHCP-supplied DNS server always pre-empts whatever is given in the AE Configuration UI.
Steps to Reproduce:
1. Using AirPort Extreme (802.11n) at revision 7.1 and MacOS 10.4.9 on a MacBook Pro (Core 2 Duo). The AE has been previously configured for IPv4 using DHCP and the MacBook is successfully connected and resolving domain names through the AE.
2. Visit "Apple Menu > Location > Network Settings" and check the AirPort TCP/IP settings. For purposes of this test, make sure the "DNS Servers" field is EMPTY so MacOS X defaults to the AE's DNS settings, then close System Preferences.
3. Run "AirPort Utility" (the newer version, not "Airport Admin Utility") and configure the AE under test. Pick the "Internet" icon in the toolbar and note the Internet Connection settings.
4. In this test, Configure IPv4 is set to "DHCP" and the DNS Server(s) field contains two DNS IPs assigned by the Internet Service Provider. In my case that's Cablevision's Optimum Online service. You may or may not see IP addresses here, but in my case they are visible.
5. As the DNS Server(s) are editable, and they both show ISP-supplied addresses, they can be changed to whatever alternate IPs you wish. For instance, change them to these alternate DNS IPs from OpenDNS.com: 208.67.222.222 and 208.67.220.220. (You could use any alternate set of IPs but for the purpose of this test use the OpenDNS IPs.) Update the AE and restart.
(For additional reference, http://www.opendns.com/start/airport.php shows instructions for the older AirPort Admin Utility, but the concept is exactly the same.)
6. Normally you shouldn't have to restart the MacBook Pro since we're just using the AE settings, but go ahead and do that just to be consistent with this test.
Expected Results:
Now for the moment of truth! We want to verify that we're using the OpenDNS IPs for our DNS Servers. One nice feature OpenDNS has is automagic redirection for certain domain name typos.
Here's an example. Drop to shell (Applications > Utilities > Terminal) and try this command (excluding the $ prompt, natch):
$ dig craigslist.og
The "og" typo is deliberate. We really want to go to craigslist.org. If you're using the new OpenDNS IPs, you will STILL get an Address (A) record with an IP like so:
;; ANSWER SECTION:
craigslist.og. 0 IN A 208.69.32.130
If you had entered "craigslist.og" in Safari, you would end up at 208.69.32.130 (an OpenDNS server) and then redirected to craigslist.org.
Actual Results:
Alas, that's not what happens! Instead, you get NO IP address, like so:
;; QUESTION SECTION:
;craigslist.og. IN A
This means we're not actually using the OpenDNS IPs. What's happening?
To find out, I spoke with the AirPort support group (Case # xxx-xxx-xx). I learned that, despite being allowed to edit and override the IP addresses provided via DHCP, the AE still uses the DHCP-provided DNS server if available.
Again, the user interface suggests that I'm allowed to override the DHCP-provided DNS IPs as shown in the UI. Even though I can do this, the AirPort will still keep note of any DHCP-provided DNS Server IPs and use those first.
True, I can switch to Manual network settings (and then my own DNS Server IPs take effect). Of course this is problematic when the ISP renews my IP address (which it does from time to time).
Another workaround is to use the "DNS Servers" settings noted in step 2 (above). However this is also problematic if I want to keep my network settings simple. It requires a "Home Network" location and an "Office" location. Still not preferable, but it's a workaround.
Regression:
n/a
Notes:
I would like AirPort's DNS settings to be overridden in the same way OS X allows DNS settings to be overridden. The user interfaces suggest this is possible but it is not. It's only possible in the OS X case. Having the same flexibility on the AirPort would be most welcome.

Afraid of the answer...sheesh...you must be a child. This has nothing to do with masquerading anything. The issue being discussed here is that people want to manually assign a dns server address via the new AEBS, while maintaining DHCP for IP address assignments through their ISP. For example, I would like to have opendns.com take care of all dns addressing at the router level, even though I have "Configure IPv4" set to "Using DHCP". If you do not understand why one would want to use something like opendns.com, please visit their website and enlighten yourself. The fact that the dns server address fields are editable when set to "Using DHCP" leads one to believe that you can manually assign a dns server in this configuration; however, under firmware 7.1.1, you still cannot. The previous iteration of the airport hardware can do it, as can nearly any router you pull off the shelf. In addition, this is something that can easily be done at the individual-computer level in OS X; however, many people would prefer to administer their network at the router level. That is the issue being discussed here. Either you can't read or you are purposely derailing the thread.
iMac 24" Mac OS X (10.4.9)

Dnsmasq sends out its own ip as dns-server dhcp option

Hi,
i have a gateway / dns server on 192.168.1.1
I have a dhcp server on 192.168.1.2 (dnsmasq)
I configured dnsmasq to look into /etc/resolv.conf (well, that's actually default behavior) and use that to specify dns server when replying to client dhcp requests.
However, it sends out its own ip instead, which is *not cool*.
# cat /etc/resolv.conf
nameserver 192.168.1.1
#nameserver 127.0.0.1
#nameserver 212.71.0.33
# edpnet
nameserver 212.71.0.33
# grep -v ^# /etc/dnsmasq.conf | grep -v '^$'
domain-needed
bogus-priv
dhcp-range=192.168.1.5,192.168.1.255,12h
dhcp-host=q700
dhcp-host=dieter-ws
dhcp-host=dieter-dellD620-arch
dhcp-host=gibran
dhcp-host=hilde-compaq-arch
dhcp-host=hilde-vbox-win
dhcp-host=BRN_0441B3
dhcp-option=option:router,192.168.1.1
log-dhcp
# cat /etc/hosts
# /etc/hosts: static lookup table for host names
#<ip-address> <hostname.domain.org> <hostname>
127.0.0.1 localhost.localdomain localhost
192.168.1.2 dieter-p4sci-arch server
192.168.1.3 q700
192.168.1.5 dieter-ws
192.168.1.6 dieter-dellD620-arch
192.168.1.7 dieter-delle5410-arch gibran
192.168.1.8 hilde-compaq-arch
192.168.1.9 hilde-vbox-win
192.168.1.10 BRN_0441B3 hl5250
178.79.146.162 dieter-linode1
# End of file
here's what I see in /var/log/daemon.log, when I start dnsmasq and do a dhcp request.
Note the discrepancy between what it says as "using nameserver" and what it actually tells clients.
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: started, version 2.55 cachesize 150
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: compile time options: IPv6 GNU-getopt no-DBus no-I18N DHCP TFTP
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq-dhcp[2168]: DHCP, IP range 192.168.1.5 -- 192.168.1.255, lease time 12h
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: reading /etc/resolv.conf
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: using nameserver 212.71.0.33#53
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: using nameserver 192.168.1.1#53
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: read /etc/hosts - 10 addresses
Feb 12 18:10:56 dieter-p4sci-arch dnsmasq-dhcp[2168]: 2764941049 available DHCP range: 192.168.1.5 -- 192.168.1.255
Feb 12 18:10:56 dieter-p4sci-arch dnsmasq-dhcp[2168]: 2764941049 DHCPRELEASE(eth0) 192.168.1.5 80:ee:73:09:fa:94
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 available DHCP range: 192.168.1.5 -- 192.168.1.255
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 client provides name: dieter-ws
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 vendor class: dhcpcd-5.2.10:Linux-2.6.37-ARCH:i686:GenuineIntel
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 DHCPDISCOVER(eth0) 80:ee:73:09:fa:94
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 DHCPOFFER(eth0) 192.168.1.5 80:ee:73:09:fa:94
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 1:netmask, 121:classless-static-route, 33:static-route,
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 3:router, 6:dns-server, 12:hostname, 15:domain-name,
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 26:mtu, 28:broadcast, 42:ntp-server, 51:lease-time,
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 54:server-identifier, 58:T1, 59:T2, 119:domain-search
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 tags: known, eth0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 next server: 192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 1 option: 53:message-type 02
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 54:server-identifier 192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 51:lease-time 00:00:a8:c0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 58:T1 00:00:54:60
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 59:T2 00:00:93:a8
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 1:netmask 255.255.255.0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 28:broadcast 192.168.1.255
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 6:dns-server 192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 3:router 192.168.1.1
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 available DHCP range: 192.168.1.5 -- 192.168.1.255
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 client provides name: dieter-ws
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 vendor class: dhcpcd-5.2.10:Linux-2.6.37-ARCH:i686:GenuineIntel
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 DHCPREQUEST(eth0) 192.168.1.5 80:ee:73:09:fa:94
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 DHCPACK(eth0) 192.168.1.5 80:ee:73:09:fa:94 dieter-ws
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 1:netmask, 121:classless-static-route, 33:static-route,
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 3:router, 6:dns-server, 12:hostname, 15:domain-name,
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 26:mtu, 28:broadcast, 42:ntp-server, 51:lease-time,
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 54:server-identifier, 58:T1, 59:T2, 119:domain-search
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 tags: known, eth0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 next server: 192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 1 option: 53:message-type 05
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 54:server-identifier 192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 51:lease-time 00:00:a8:c0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 58:T1 00:00:54:60
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 59:T2 00:00:93:a8
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 1:netmask 255.255.255.0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 28:broadcast 192.168.1.255
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 6:dns-server 192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 9 option: 12:hostname dieter-ws
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size: 4 option: 3:router 192.168.1.1

1 yes, the dhcp server who's scope is full will not do a dhcp
'offer'
2 dhcp that answers fastest with a 'offer' will win. A delay is configurable (but changes nothing
about the root scenario were the fastest will win)
Note that if the scopes overlap on the servers, they might not lease out all the addresses in the scope.
I would enlarge the scope as you will want to fence against unavailability of one of the servers (or a network connection for that matter). you currently have more addresses leased out than any set of two of your servers can offer.
MCP/MCSA/MCTS/MCITP

DNS server on Solaris 8

I am interested in using Solaris 8 as an DNS server. Any advise on how I can configure it. I am new to Solaris 8, so any step by step advise is greatly appreciated.
Thanks a million.

Hi,
I am sending the configuration for DNS. But before doing it take a printout and have a study and then do it. If you have any comments don't hesitate to contact me.
Thanks.
Mohammed Abid Ali,
[email protected]
Dubai, UAE.
=========================================
For example consider the following
Domain name     universe.com
DNS server name     wstsun
DNS clients     wstsun1, wstsun2, wstsun3,
wstsun4
note: Use syntax, dots and space carefully.
Steps to create DNS server
1.     Go to /etc directory and create a file called �defaultdomain� and enter DNS name (universe.com)
2.     Reboot server by using init 6.
3.     Go to /etc directory and create �named.boot� file.
4.     Go to /var directory and create �named� directory.
5.     Go to /var/named directory and create the following file
i)     named.local
ii)     named.hosts
iii)     named.rev
6.     Go to /etc/nsswitch.conf file and add �dns� before the hosts.
Example of each file
i)     example of �/etc/defaultdomain� file � universe.com
ii)     example of �named.boot� file
;named.boot file on the dnsmaster (wstsun)
;files required by in.named are located here
directory /var/named
; here are the names of the primary files.
primary     universe.com named.hosts
primary     0.0.127.in-addr.arpa     named.local
primary     0.200.200.in-addr.arpa named.rev
iii)     example of �named.hosts� file
;SOA rec
universe.com.     IN SOA wstsun.universe.com. root.wstsun.universe.com
19970332          ;serial number
21600          ;refresh every 3 hours
10800          ;retry every 3 hours
604800          ;expire after a week
86400 )          ;TTL of 1 day
;Name Servers
universe.com     IN NS wstsun.universe.com.
;Addresses
localhost          IN A     127.0.0.1
wstsun1          IN A     200.200.0.1
wstsun2          IN A     200.200.0.2
wstsun3          IN A     200.200.0.3
wstsun4          IN A     200.200.0.4
wstsun          IN A     200.200.0.10
;aliases
dnsmaster     IN CNAME wstsun.universe.com
Note: Include DNS server name and ip number in hosts list.
iv)     example of �named.local�
0.0.127.in-addr.arpa.     IN SOA wstsun.universe.com. root.wstsun.universe.com.
19970331          ;serial number
21600          ;refresh every 3 hours
10800          ;retry every 3 hours
604800          ;expire after a week
86400 )          ;TTL of 1 day
;Name Servers
0.0.127.in-addr.arpa.     IN NS wstsun.universe.com.
v)     example of �named.rev�
;SOA rec
0.200.200.in-addr.arpa.     IN SOA wstsun.universe.com. root.wstsun.universe.com.
19970331          ;serial number
21600          ;refresh every 3 hours
10800          ;retry every 3 hours
604800          ;expire after a week
86400 )          ;TTL of 1 day
;Name Servers
0.200.200.in-addr.arpa.     IN NS wstsun1.universe.com.
;Pointer records for 1,2,3,4,10
1          IN     PTR     wstsun1
2          IN     PTR     wstsun2
3          IN     PTR     wstsun3
4          IN     PTR     wstsun4
10          IN     PTR     wstsun
Note: Include DNS server name and ip number in records list.
After creation of DNS database files run �/usr/sbin/in.named� to verify �named� server is ready for queries. If �named� daemon finds any errors in DNS database files you can find in �/var/adm/messages� file. Correct the errors in respective files and run daemon after killing old daemon by using �kill� command. By using �nslookup� command verify whether DNS server is responding or not.
Note: if you want DNS server to act as a client create /etc/resolv.conf and make the entries about domain name and IP number.
Creating DNS client
1)     Go to /etc directory and create �resolv.conf� file.
2)     Go to /etc/nsswitch.conf file and keep �dns� in front of hosts.
i)     example of �resolv.conf� file
domain          universe.com
nameserver     200.200.0.10
Note: resolv.conf file contains the information about domain name and IP number in which clients are located. Use �nslookup� command to DNS server responding properly or not.

DNS Server Infrastructure Design

Good day IT Folks,
Currently I'm on the planning stage of designing DNS infrastructure of our company. I've read a lot of reading materials available online about DNS. According to what I've gathered, two (2) DNS server is the minimum and three (3) is the recommended for the
usual set up of DNS. What I want to my DNS infrastructure is to have two (2) DNS servers for my LAN (internal network) and one (1) DNS for my LAN-to-Internet connection (external network).
The two (2) DNS servers will resolve LAN request and will forward requests to the another one (1) DNS server if internet-related sites is requested. I would like to ask for your help to give me insights how am I going to do this, where to start and what
are the things I should consider.
Thanks.
akosijesyang - the conqueror

You could go with a secure design such as the following (click on it to open a larger image in a new page):
See if the following threads help:
Technet Thread: Problem with Windows 2008 R2 Dns Server getting SERVFAIL resolving one domain, 1/18/2012
Includes a secure DNS forwarder in the DMZ image
http://social.technet.microsoft.com/Forums/en-US/winserverNIS/thread/b00fc041-ba44-45b6-a8a1-a00374a20edf
Technet Thread: DNS Structure to rebuild efficiently - Question about the resolution process, 10/27/2011
Includes a secure DNS forwarder in the DMZ image
http://social.technet.microsoft.com/Forums/en-US/winserverNIS/thread/3a5fb6ac-6ab7-45b1-abab-e0d928a7e06c
Good discussion on DMZ secured resolver design, and the use of "Unbound DNS Resolver (http://unbound.net/) to use on your DMZ DNS server instead of Windows DNS. (Note: IMHO, for AD, I would rather use Windows DNS. - Ace)
Technet Thread: W2003 DNS cache snooping vulnerability for PCI-DSS compliance, 10/10/2011
http://social.technet.microsoft.com/Forums/en-US/winserverNIS/thread/67e9189b-606a-40d2-9944-8b4c7d084017/
And dealing with internal and external names:
Can't Access Website with Same Name (Split Zone or no Split Brain)
Published by Ace Fekay, MCT, MVP DS on Sep 4, 2009 at 12:11 AM 1278 0
Note - In an AD same name as the external name (split zone) scenario, if you don't want to use WWW in front of URL, such as to access it by
http://domain.com, then scroll down to "So you don't want to use WWW in front of the domain name"
http://msmvps.com/blogs/acefekay/archive/2009/09/04/split-zone-or-no-split-zone-can-t-access-internal-website-with-external-
name.aspx
Ace Fekay
MVP, MCT, MCITP/EA, MCTS Windows 2008/R2 & Exchange 2007, Exchange 2010 EA, MCSE & MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services
Technical Blogs & Videos: http://www.delawarecountycomputerconsulting.com/
This post is provided AS-IS with no warranties or guarantees and confers no rights.

Stop RV082 acting as DNS server?

We have a RV082 that we're using soley for routing and no other services (firewall is disabled). For some reason you can query a DNS server on it even though we have never set a DNS server address for it to use. I'm guessing that it has some hard-coded DNS system to use with the System Management > Daignostic > DNS Name Lookup utility. Because you can query this DNS service from outside the router, this actually gets flagged by our security scanners as a DNS vulnerability. Is there no way to disable this DNS server?

Hi It, here is an excerpt from the product documentation. Are you using the DHCP from the router? Did you specify any DNS value on the router? It seems by default the router acts as a DNS proxy (using your WAN setting to feed DNS to the LAN client). Keeping the value at 0.0.0.0 makes the router service as a DNS proxy.
DNS (used for DHCP Server only)
Optionally, enter the IP address of a
DNS Server
. You also can enter a secondary
DNS server. Specifying a DNS server can provide quicker access than using a
DNS server that is dynamically assigned through the WAN settings. You can keep
the default setting of 0.0.0.0 to use a dynamically assigned DNS server.
-Tom
Please mark answered for helpful posts

HT2513 Can I share an iCal calendar with someone who uses Google Calendar?

That's basically the question. I use iCal and I want to share one of my calendars with someone who uses Google Calendar and doesn't have any Apple products. Is this possible?
Thanks,
Mark

CD27 wrote:
I didn't explain correctly. Right now I share (subscribe) a calendar on Mobile Me , in addition to my own personal calendar. That shared calendar is staying on Mobile Me and I need to be able to access it once I move my personal calendar to iCloud. That is, if I use iCloud can I share calendars that are not on iCloud, but are on MobileMe?
You can't do this: when you migrate your MobileMe account to iCloud the calendars will be transferred there and no longer available on MobileMe.
You can share calendars privately or publicly from iCloud: private calendars can only be viewed by nominated iCloud members; public calendars can be viewed by anybody in a CalDAV client such as iCal or Google Calendar (though they are non-editable).
Please see this page: http://support.apple.com/kb/PH2690

Use Google's Public DNS Server To Fix Apple TV Streaming Problems

Similar Messages

Maybe you are looking for