Ubuntu :: ISP Change Blocks Nameserver Access?
Jan 29, 2011
I just switched ISPs from a local vendor to Wild Blue. All my Windows boxes adopted automatically. My Ubuntu 10.10 workstation can find no sites, period. My old resolv.conf said:
# Generated by NetworkManager
domain sdc.org (<- my old local ISP)
search sdc.org (<- my old local ISP)
nameserver 192.168.0.1 (<- correct IP V4 address for my router's front end)
This has not changed, and I guess my IP stack is searching for sdc.org domain addresses on WildBlue.net, which don't exist there. After many hours trying to speak with WildBlue Tech Support people, I've decided that domain search questions are beyond their ability to comprehend or discuss. If I could ascertain the domain(s) to search I'd just edit the silly file.
Has anyone else connected with Ubuntu 10.10 on WildBlue?
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Feb 22, 2010
When I edit /etc/resolv.conf, it is overwritten right away with the old configuration. How do I really change the nameserver on Ubuntu Server 9.10?
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Apr 20, 2011
I'm getting my first web server configured, and as per a tutorial I found, I used shorewall. However, it blocks all internet access (even from apt) to my server! Does anyone know a decent firewall program or a good guide on configuring shorewall?
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Mar 17, 2010
I have a Centos 5 server working as firewall, dns, proxy (squid) and mail server with postfix. sometimes it blocks ping from the net and when it hapen I cant browse my site not even fetch my email through webmail from outside. But inside every thing still go well even browsing the internet, but no ping to the net (e.g pop.gmail.com). when I restart it everything come up and work fine.
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Dec 1, 2010
I have a fresh install of SuSE 11.2. I have installed Communigate Pro (Email server) and Webmin. From my workstation (on the same LAN), I can access the web interfaces for both CGP and Webmin right after the server boots up. But after about 10 minutes or so, I can no longer access either web interface. The server itself still functions normally. I can get on the internet with the server, and I can control Webmin via localhost:10000.
The only thing that allows me to connect to it from my workstation again is to either restart the server, or go into "Network > Linux Firewall" and click "Apply Configuration". What's going on that makes my remote access stop working?
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Dec 25, 2010
I have a own firewall which is also acting as a nameserver for my own network. From Windows machines everything works perfectly i.e. I can access my computers / equipments with the defined names instead of ip-addresses. But not with Ubuntu machines! Below example taken from my Ubuntu machine.
[code]...
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Aug 19, 2010
A server at which I have an account has changed things. The new /etc/resolv.conf fails to resolve a lot of addresses. I can use dig @ with OpenDNS and resolve them successfully, but how do I get apps, such as sendmail, to use a nameserver I specify? It'd be nice if a user could have his own additions to resolv.conf, but I don't see that in the docs, or a way to get sendmail to use a specified nameserver.
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Mar 27, 2010
Ok, one more question on nameserver security. So I was reading this post and it recommended not setting a defined outgoing port for your nameserver due to the Kaminsky vulnerability.What is the proper way to lock down a nameserver, but avoid the vulnerability of only allowing incoming and outgoing requests on port 53
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Sep 19, 2010
I have a small webserver running ubuntu server 10.4. It runs fine except after every reboot, I get DNS errors. I have to manually edit /etc/resolv.conf to add:
Code:
nameserver 192.168.1.1
The address of my internet gateway on my LAN. Obviously I am ignoring the warning in resolv.conf that this will be overwritten.
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May 7, 2011
i've just setup a vps server with 11.4 everything is almost look fine now, but i couldn't setup a nameserver, i've searched on the internet about that but directories is different in suse. anyway i registered a domain on onlinenic yesterday and i want to use this domain as a nameserver and my hostname. how can i do that ? and do i need to have at least 2 ip for that ?
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Aug 30, 2011
According to the man page, host ought to query "the server or servers listed in /etc/resolv.conf," but it only uses the first entry in that file:
thefourthtower:$cat /etc/resolv.conf
nameserver 8.8.8.8
nameserver 8.8.4.4
[code]....
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Jul 14, 2010
I have a domain name and I want to host it on my ISP.What my goal is is to have 2 nameservers:NS1.mydomain.com
NS2.mydomain.comI want to be able to put www.mydomain.com and have DNS do its thing. I want to use BIND to do this. This is a new realm for me, and i know exactly what I want to do, but I struggle putting it in words
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Feb 8, 2011
i get this error whi trying to configure caching DNS namerver
[Code]....
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Jan 11, 2010
does anyone know of a good site/book/guide to learn about linux web server administration?
and also how do you find the your own nameserver numbers? would that just be the IP of my web server?networking isn't my forte, but i do intend to learn with this project.
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Apr 6, 2010
Like many others I'm running into some reverse lookup issues with SSH. Setup is as follows:
localnet setup
myserver - 192.168.0.x
myworkstation - 192.168.0.y
[Code].....
nslookup tests show that my reverse lookup is functioning correctly. However, if I use "myworkstation" to connect to myserver.mydomain.com using an external nameserver SSH says: "Address 84.162.xx.yy maps to myserver.mydomain.com, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!"
On myserver the /etc/hosts has the internal address for the server which seems the normal way to go to me. Changing this to the servers external address solves the issue.
Apparently a connection originating from myworkstation arrives from/with my external address, and when its reverse is checked by the server it apparently finds its own internal address for that name in /etc/hosts before doing a nameserver query and thus concludes that internaladdress <> externaladdress which gives the error.
Is there any way to have the server check external DNS before /etc/hosts? Another solution would probably be running an internal DNS, so myworkstation doesn't connect through the 'outside'.
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May 9, 2011
I want to configure DNS Server on Fedora14. So I install caching-nameserver cause any template files.I can't install caching-nameserver on my Fedora14 by this command: [but i can do it on Fedora5]
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Feb 7, 2011
today i found out that my bind9 on debian 5 suddenly failed and it also consumed 100mb of RAM at most times.
nameserver daemon with smaller memory footprint to replace bind9.
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Sep 1, 2010
As I understand it, /etc/resolv.conf is rewritten at boot time by NetworkManager (a script?)I have a problem in the order the nameserver entries are written by my system (F13). This is:
Code:
nameserver 192.168.1.1
nameserver xxx.233.0.4
[code]....
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Aug 15, 2010
How can I have /etc/resolv.conf point to my router address as the nameserver nameserver 192.168.1.1
instead of picking up the ISP's DNS servers and using that as the nameserver entries? Reason being I have more than one ISP account, and when I change I do not want to have to remember to restart the networking service. because i often forget.
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Apr 10, 2011
I tried installing gnome-desktop, which wiped out /etc/resolv.conf (and ultimately failed to install). A comment was left in resolv.conf saying "do not edit..". Where is the proper place to list nameservers in debian?
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Dec 7, 2010
I'm trying to query the second nameserver on a local network to resolve local domain names to IP's.
Code:
$ ping ids.mydomain.loc
ping: unknown host mydomain.loc
[code]....
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Jun 20, 2011
I use red hat Es 5.5 64 bit.. I find the item nameserver in resolv.conf cannnot be saved. Everytime ,reboot or restart the netwrok service . The data in resolv.conf will be removed and clear . I need to edit it again . I also try to add DNS1=XX.XX.XX.Xx in ifcfg-eth2 but the same problem. in it , the resolv.conf is still need to edit every network service restart . So, how to save the resolve.conf about nameserver forever ??
[root@vls etc]# cat resolv.conf
# Generated by NetworkManager
# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
[Code]...
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Aug 24, 2010
My configuration: CentOS in a VPS environment, I have 2 static IPs at my disposal.I'm having trouble setting up my nameservers. I've registered the nameservers with my registrar and supplied the GLUE records, however my registrar has not yet applied this information into the DNS zone, because my nameservers fail to generate a response on port 53.DNS check says the following about my nameserver address:Checking SOA records for domain. Domain server is not answering to UDP requests on port 53. Possible problems: A firewall is blocking port 53, server is down, server is not running software for handling dns requests.So the only two possibilities I see is that my port 53 is somehow blocked or not properly set to accept and send the correct traffic or that I've misconfigured BIND.
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Mar 22, 2009
I just installed F10 from a Live download iso on a Sony VAIO laptop with an Intel PRO/Wireless LAN2100 3B Mini PCI Adapter. The linux driver is ipw2100 and functions without problems.
After the install I accepted the update downloads offer and downloaded somewhere around 170 updates. The kernel version is 2.6.27.19-170.2.35.fc10.i686.
I am using a Linksys WRT55AG as a DHCP server. Using NetworkManger it assigns IP addresses without incident.
My problem is that I can't get name resolution to function without manual intervention.
I can ping other wireless nodes on my network and the response to $ dig -q www.yahoo.com is: ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 30153
The /etc/resolv.conf file contains no entry for 'nameserver=' and if I manually edit /etc/resolv.conf, it is overwritten on reboot or restarting the NetworkManager service. I am aware of /etc/sysconfig/networking/profiles/default/resolv.conf.
Additionally, in the var/log/messages file I can see that NetworkManager makes links between /etc/resolv.conf and the default version.
However, after either rebooting or restarting the NetworkManager service, if I manually enter a DNS address 192.168.1.1 (my wireless router) under the DNS tab of the system-config-network 1.5.95 application. This address does not persist after either rebooting or restarting NetworkManager.
If I disable NetworkManager, I can't get the WRT55AG to assign the wilreless adapter an IP address.
So the bottom line and my question is what do I need to do in order to simply boot and have wireless connectivity?
To what file does system-config-network 1.5.95 write the DNS address entered from it's GUI?
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Mar 4, 2011
This continues a thread started in the applications forum:mc hangs temporarily when network is downmc (Midnight Commander) hangs on my desktop but not on my laptop. When I compared desktop and laptop configurations, I found the following differences:
/etc/hosts files:
Code:
Laptop: 127.0.0.2 linux-4xt8.site, linux-4xt8
[code]....
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Sep 3, 2010
How do I know the reply was from caching-nameserver, master nameserver or slave nameserver in BIND DNS.? Can I trace the nameserver that replied my dns query? Like I have a master nameserver, a slave nameserver and a caching nameserver in my network. Is it possible to know that which of these servers replied my dns query? Also can i trace back that replying server exactly?
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Feb 12, 2010
I wanted to change the name of one of volumes/partitions from "New Volume" to "Photos". I had two "new volumes" and it was getting confusing. Thinking this would be an easy process I went into nautilus (gksudo nautilus) and right-clicked on the icon representing the volume, selected Rename and typed in "Photos". I now cannot access that volume from Ubuntu but I can from Windows XP (where it is still labelled "New Volume). When I try to access it I get the error message: "Cannot mount Volume. You are not privileged to mount the volume 'New Volume' " This is the readout from fstab:
[Code]...
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Nov 12, 2010
I just recently installed Ubuntu 10.10 on my Acer Extensa 4200 laptop. At first all seemed well. My wifi worked for the first time since installing Linux on this machine when I purchased it a year ago. Now come the problems,and as a technically challenged 62 year old, I am at wits end! When I got to "Places" in the Gnome Panel, instead of going to a file folder. It opens Firefox! Where instead of folders and files, I see an index of files. If I click on one of them, once again Firefox opens another index of links to files. What gives? Is this something to to with Nautilus, which I don't know how to access? If it is, how do I access Nautilus and change it?
Then my Firefox has no image, video, map etc. search options. When I google something I get only WEB searches, nothing else. I google my address and I get whatever information is on the web, but nothing. No maps or images. The same for my doctors office. There is no way to get a map or directions. What gives. Are my settings all screwed up or what? I resort to buying a windows machine! I deleted windows on this machine shortly after purchase. I always had SOME problems with Ubuntu, but this is ridiculous. It seems that wireless is the only thing that works
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Jun 20, 2011
I am using Ubuntu after a BSOD error. Ubuntu is awesome, I can access all my windows files, however, I need to access my programs on windows. Here's what happened - I accidentally changed permissions after getting a virus. I then tried to do a system restore and during that process the computer crashed. When I try to boot to windows in every possible mode, I am always left with the dreaded blue screen of death.
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Dec 26, 2010
I love to use opera & especially like the speed-dials.. the file I need to edit is 'standard_speeddial.ini' however I do not have enough access & have no idea how to get it (& I have tried as well).
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