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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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.
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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]
View 4 Replies View RelatedI'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
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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?
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
View 3 Replies View Relatedi'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 ?
View 7 Replies View RelatedWhen 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?
View 1 Replies View RelatedAccording 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
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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
i get this error whi trying to configure caching DNS namerver
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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?
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.
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
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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.
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.
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?
View 2 Replies View RelatedI 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
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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.
View 2 Replies View RelatedThis 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
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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.
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
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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'.
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?
View 3 Replies View Relatedwhat is bind vs bind-chroot vs caching-nameserver ?what is the different between eatch others ?
View 7 Replies View RelatedI am attempting to setup and old BBSinside of DosBOXI've built one of the DosBOX Megabuilds, with the NE2000 patch.It uses libpcap in order to piggy back on top of the system's NIC. All of the dosbox side appears to be working.My system comes up, gets the MAC address i told it to use, i can load a packet driver in dosbox, all of that seems well and good. The issue, i think, is on the linux side. It's built on a Fedora 14 box. I'm getting the feeling that networking isnt getting out of the dosbox instance. Does it seem possible that fedora needs to have some config in place to link networking over to dosbox?
View 7 Replies View RelatedI just want to use Internet Connection Sharing (ICS) to connect to the internet. I have done a massive amount of troubleshooting, but some of it seems to contradict itself, and the only two things that I know for sure are that it used to work, and that my Ethernet cable is not the problem. When I use Terminal utilities like ifup and dhclient it seems that it can not determine IP information, but when I try to put it in manually, the "Apply" button grays out right after I finish typing it in. When I try to connect normally, in KDE or GNOME, the icon acts like it's connecting, then instead of having the connected icon, I receive a notification that "the network has been disconnected", and it goes back to the disconnected icon.
Oh, and by the way, I know that I could probably find a workaround, but I have limited resources, and this used to work. The Linux is a Dell desktop with Fedora 12 and the Windows is a Windows 7 HP laptop.EDIT: I hope that I didn't mess something up, but I accidentally used system-network-config to try putting in the IP address there, and ended up changing it back to the original settings, but the computer is now calling it Auto Ethernet in the taskbar icon, although sudo iwconfig in the terminal still calls it eth0.
I am having a heck of a time trying to find directions on networking my two computers together in order to share files. I have two machines running Ubuntu 10.10 Desktop & Netbook remix.
They are both connected to my wireless router to connect to the internet.
trying to bond two 3G modems but I cant Im really new in this matther so I really This is the error that appears
ubu@ubu-AOD255E:~$ sudo /etc/init.d/networking restart
* Reconfiguring network interfaces... Ignoring unknown interface ppp0=ppp0.
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i know exactly what i need to do, im just not familiar enough with command line to do it properly.i have 7 computers.the first 4 are connected to a router via wireless at one end of the house. of the last 3 only 1 will be able to access the router via wireless, so it needs to share it's one wireless connection via ethernet. this computer i'm going to call 'server'server will have two IP'swlan0 192.168.1.6 this connects to the router that has internet access.eth0 i intend to have the following settingsip:192.168.0.1sub: 255.255.0eth0 will connect to a second router, where the cat5 cable goes from the server, into the internet port of the router where i will define the router's static IP:IP: 192.168.0.100sub: 255.255.255.0gateway 192.168.0.1i have then set the router IP for LAN handling as 192.168.27.1 and all ethernet connections will have a 192.168.27.x IP.
so i need to know how to, without a gui application, use the terminal to assign server eth0 a proper IP address, and tell the server to take the connection it has and share it through eth0 to supply internet for the last 2 computers via ethernet.i had it set up in this way with a windows machine being the one that had the wifi access, but i'd rather have it setup for the ubuntu server to do this task. security is imperative for these 3 remaining machines, so just getting 2 more wifi adapters for a connection to the initial router isn't an option.the 2 that connect to server do so through SSH and though server IS connected via wireless it only makes outward connections through
I have installed fedora 12 recently. after installation i tried to connect to the internet using BSNL broadband connection. I filled in the details such as IP, Netmask, Gateway and even DNS servers. In the services also I ensured that the network manager services is on. However even though my computer cannot connect to the internet. I then tried the ping test of the modem from the address 192.168.1.1 and found that the ping test is successful. Then i tried the network administrator and there I noticed something unusual.
There are two options in the devices eth0 and eth1 thats ok but the unusual; thing is that the Activate (green button), Deactivate (red button) and even the delete buttons are in the background and I cannot select them. Isthis the problem for the network connectivity.
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I then tried the ping test of the modem from the address 192.168.1.1 and found that the ping test is successful. Then i tried the network administrator and there I noticed something unusual. There are two options in the devices eth0 and eth1 thats ok but the unusual; thing is that the Activate (green button), Deactivate (red button) and even the delete buttons are in the background and I cannot select them. Isthis the problem for the network connectivity.
