Server :: SOA For Nameserver Can't Be Retrieved, Possible Port Or BIND Misconfiguration?
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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Jul 8, 2011
what is bind vs bind-chroot vs caching-nameserver ?what is the different between eatch others ?
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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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Nov 7, 2010
I want to run a soft that is daemonized, and listens on port 6789. This soft is launched through a php page, so, by the apache user. The probl�me is that the apache user does not has rights to open / listen on a port. I tried to add apache user to the root group, but it won't help. In the application log, I have this every second :
[code]...
I tried to add apache user in the sudoers with a nopasswd but it's still a no go.
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Jun 15, 2011
I have just installed Debian 6.0.1 base install, for the use of a file server. I installed samba using apt-get and am using: smbd version 3.5.6
Here is my smb.conf file. Very basic, which by the way, seems OK according to the output of testparm.
Code:
[global]
log level = 3
workgroup = INERT
wins support = yes
[test]
[Code]....
I don't understand why smbd is not reportedly binding to IPv4 ports.
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Apr 27, 2011
I'll explain this in one sentence: Is it possible to program a port-binding shellcode in which people across the Internet can connect to, without being thwarted by the router blocking their data because the port its bound to doesn't allow port-forwarding
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Mar 5, 2011
I installed squid on my centos and I tried to follow some guides but it still gives the same error
Quote:
ERROR The requested URL could not be retrieved
While trying to retrieve the [URL]...The following error was encountered: Access Denied. Access control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect.
[Code]...
ZON-BFC0 is the name presented in my wireless connection, plus the actual ip I'm using there is the ipv4 I found with a quick "ipconfig" search on DOS.
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Mar 7, 2010
today there was problem with isp but we fix it now other machine run internet fine but when we run through squid proxy machine it give this message to all users. what fields column values config i should check it. i also reset the cache make empty folder. restart machine also service clear the logs . it is on centos 5.4
see below message
ERROR: The requested URL could not be retrieved While trying to retrieve the URL: [URL] The following error was encountered: Read Error
The system returned:
(104) Connection reset by peerAn error condition occurred while reading data from the network. Please retry your request. Your cache administrator is root.
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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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Jan 31, 2016
Is is possible, via iptables or something similar, to bind a service running on a specific port to a specific interface? My case: I use a VPN service for privacy. I would like to have all traffic except ftp and ssh to run over tun0. Ports 21 and 22 will need to be accessible to the outside world (eth0) while the VPN is running.
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Oct 20, 2010
I'm using Goddard and AMD 64;
1) Just playing with PHP and needed to do some debugging.
2) Installed Xdebug from RPO
3)PHP.INI edited
4) Phpinfo() reports xdebug running.
I try
[code]...
I thought about selinux and mapped 9000 [URL]...
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Dec 29, 2010
64 bit lubuntu
trying to start a .bin file from desktop
gone to properties of file and made executable
open folder where .bin resides
open terminal
Quote:
dabud@GG64bit:~/Desktop/WCS185b32010b$ ./wcs185b3.bin
29/12/2010 00:37:00 Loading Config...
29/12/2010 00:37:00 Config Loaded
29/12/2010 00:37:00 Loading IP to Country Data
[Code]....
I am thinking it might be internet related. Google does come up with things re the error but I am not clear as to what I should do. WCS 1.8.5b3-Linux is a chat program
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Jul 26, 2010
If I open a raw SCTP socket, am I able to bind to a specific port? (I only want to see SCTP packets from a particular IP address AND port.) Or, any raw SCTP socket, regardless of port binding , will get all SCTP packets received by the OS from that IP address? The port doesn't matter and is ignored.
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Feb 16, 2010
I have a QMgr running on a SUSE 11.1 - I start my runmqlsr under qmgr control on 1414. After a few minutes the listener dies saying that it can't bind to port. I did a netstat -a and I see no service on 1414. I did an lsof | grep 1414 and found nothing. what am I missing here?
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May 10, 2011
- I setup port forwarding of openssh :
connect 1: ssh -g -f -p 11111 -i /<path-to-private-key> user1@ip-server1 -L 22222:ip-server1:161
- Then I setup second connection
connect 2: ssh -g -f -p 11111 -i /<path-to-private-key> user1@ip-server1 -L 22223:ip-server1:3306
- Openssh waring to me "bind: address already in use"
- So I think port 22223 have had another program use,I use command:
ps aux | grep ssh /* find process id of second connection */
kill -9 <process-id-second-connection>
netstat -an | grep 22223 /*find which program use port 22223> */
- but I can't find anywhat
- Then I run again command :
connect 2: ssh -g -f -p 11111 -i /<path-to-private-key> user1@ip-server1 -L 22223:ip-server1:3306
- And I receive a error from OpenSSH :" bind: address already in use"
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Feb 27, 2009
I use web server apache use php fastcgi (Centos 5.2, apache 2.2.9 , php 5.2.5 and fcgi-2.2.4 ). I receive error : "The server encountered an internal error or misconfiguration and was unable to complete your request. contact the server administrator, no-reply@zz.vn and inform them of the time the error occurred, and anything you might have done that may have caused the error. I view log :
[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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Oct 24, 2010
My understanding is SELinux adds type enforcement to standard Linux. This means that both the standard Linux and enhanced SELinux access controls must be satisfied to access an object. Which means that thing that is prevented to do in the normal standard Linux will be also prevented in the SELinux System? Does SELinux make it possible to run a non-root software to bind to a port < 1024? something that standard Linux won't allow? If not, what other suggestions do you have for allowing a program to run as non-root but able to bind to privileged ports? I know all about using the port re-direction such as ipchains, iptables.
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Sep 26, 2010
I am trying to create a socket to listen for a bootp response so I am using a PF_PACKET socket so that I get the response based on my mac. My problem is that I don't want to hear all traffic (as I do now) so would like to use a specific port number and bind to it.
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Jun 26, 2011
I am learning network prgramming in linux in c,and try to build a server and in this server I want to bind the listening socket to a paricular Ip address and port.Bind function is showing error,I did not want to use wild card. Here is the code.
#include<stdio.h>
#include<sys/socket.h>
#include<strings.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<string.h>
[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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Feb 5, 2011
I just upgraded from FC 13 to FC 14. I run an ssh server on a port in the 3000s (call it 3xxx, to protect the innocent). When I try to start sshd with the "Port 3xxx" option in sshd_conf, I get the following error in /var/log/secure
sshd[5104]: error: Bind to port 3xxx on 0.0.0.0 failed: Permission denied.
sshd[5104]: error: Bind to port 3xxx on : : failed: Permission denied.
I did not use to have this problem in FC 13. how I can give sshd the necessary permissions now?
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Jul 19, 2011
I'm trying to add a key public key for my dev box which is a vm running ubuntu natty, and I am unable to connect via ssh. I've tried rsa and dsa, as well as these commands:
exec ssh-agent bash
ssh-add ~/.ssh/id_rsa
ssh-add ~/.ssh/id_dsa
[Code]...
I think I've found the error by running sudo /usr/sbin/sshd -Dd, but I'm not sure how to fix it:
ebug1: sshd version OpenSSH_5.8p1 Debian-1ubuntu3
debug1: read PEM private key done: type RSA
debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048
[Code]...
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May 2, 2010
I have a mail server i need it to send message via port 587 not port 25, i make some changes to my postfix server which i use and it is already successed making a telnet to 587 port like it :
[Code]....
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May 26, 2010
I am preparing a poster using draw and impress. Everything go well till I save the file and quit the impress. When I open the previous prepared poster in impress, none of pictures embedded retrieved. I have also prepared a diagram using draw. There is no problem importing it into impress. The problem comes when I close the poster and re-open it in impress. It goes crazy. 1.png is before closing the impress and 2.png is after re-opening it.
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Jul 9, 2010
I'm setting up Ubuntu 10.04 Server x64 on a Gateway DX4710. I installed on a 500GB SATA, using encrypted LVM, added webmin, and used ufw to configure iptables. All seemed fine.I then set up RAID1 on two 1TB SATAs. Using webmin, I created Linux RAID partitions on sdb and sdc. I then ran ...
sudo mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1
sudo mkfs.ext3 /dev/md0
sudo mkdir /data
sudo chmod -R 777 /data
sudo mount /dev/md0 /data
All still seemed fine.I could see /data in the webmin filesystem list, and had ca. 1.4TB total local disk space.At that point, I decided that I really wanted an encrypted filesystem on /dev/md0. I also needed to tweak the fan setup. And so I shut down, without adding /dev/md0 to fstab. And it was probably still synching.Now /dev/md0 is semi missing. That is ...
sudo mdadm -D /dev/md0 => doesn't exist
sudo mdadm -E /dev/sdb1 => part of RAID1 with sdc1
sudo mdadm -E /dev/sdc1 => part of RAID1 with sdb1
What do I do now? Can I recover /dev/md0? Is it just that I didn't add it to fstab? Can I just do that now? Or do I need to delete sdb1 and sdc1, and start over?
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Feb 21, 2011
i started on the "Installation & Upgrades" Forum. So this is basically a repost. I configured an encrypted swap during the installation process of my kubuntu maverick using the manual install CD. I do not use LVM. This worked fine but I made the mistake of assigning a password to the encrypted swap. I would like to change this in favor for a random key. I tried to change /etc/crypttab in the following way:
[code]...
Now the system still asks for a password for sda7_crypt at startup, but does not recognize the old password. It seems that the swap gets a random key and works fine anyway, so I really want to remove only the question for the PW at boot time. This is not a big issue, but it is annoying. When the system is up I can do swapoff and swapon without problems and no password is needed. Directly after boot swap works:
[code]...
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Oct 21, 2010
VERY new to linux, erm but I have an issue that needs solving!I recently moved to university, where their network blocks sftp port 22, this means that I cannot connect to my FTP server which is running a version of linux.Now I've got this ftp server connected to a seedbox and it was created using the following walk through..Code:I have written this guide for a friend, but I though it would be useful for others as well.
There are several guides floating around, but I found that most always cock up in some way. This one is tried and tested to work on Debian Etch (on an OVH rps, but should apply to most servers).If there is a new stable release of rtorrent/libtorrent then I will update this guide to show you how to update it (without reinstalling the whole server).
At the bottom there are also instructions to install ftp access & some network monitoring software.Basically, I would really like someone to be able to construct the commands on how to change the listen port for sftp connection on linux or add another port to the list that Linux would use so that I could put in through putty.
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Apr 23, 2010
I want to host sites.
[url]
[url]
I have a public IP rest is on LAN.The main site is on public IP and want any request on site1.myserver.com to be redirected to internal LAN web server which will process the requests.
I am using a Debian Lenny and apache2.
In an earlier post on the forum I was able to configure Apache Reverse Proxy by changing apache2.conf the sites hosted at that time were
[url]
[url]
Now I have formatted my server and it is a fresh installation of Debian Lenny and apache2 on it so previous settings are not there.
This time I created two virtual hosts.There are two files in /etc/apache2/apache2.conf site1.[url]
and [url] then a2ensite [url] a2ensite site1.[url]
The configuration of these are as follows:
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Nov 14, 2009
When computer idles for 20 minutes & I return, the cursor is completely gone & cannot be retrieved, though the mouse looks like it is working, just no cursor. Also my monitor keeps changing parameters, I tried to set Sax2 but it won't save changes? What do I do? I didn't notice the cursor thing until I set up the screensaver to go off at 6 minutes.
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