CentOS 5 Server :: Home DNS Server Refuses To Answer Requests
Aug 25, 2009
I have a home DNS server that has been working for some time today. Today I restarted to restarted it to clear the cache on it and now it refuses to answer and requests. Named starts fine with no errors. Here is named config file that worked for about 2 weeks fine and now doesn't want to work.
I have installed bind from the repos and am trying to setup a caching name server. After copying the stock name-cachinging.conf to named.conf, I tweaked named.conf to reflect my LAN:
options { listen-on port 53 { 127.0.0.1; 192.168.1.102; }; listen-on-v6 port 53 { ::1; };
I have one server at home, connected through a router that gives me a static IP:192.168.1.2 - My PC192.168.1.3 - CentOS serverI enabled the port 80 into router forwarding system and I can connect properly to CentOS server, using the IP my internet provider gives me. My router automatically forwards a changed IP to my dyndns.com account so I can also access the server through a domain name (I pay to have it linked to one of my domains).My next step is to configure the mail server (dovecot) , so I can send emails from my local server(192.168.1.3).I was wondering if anyone has any tutorial links or tips to have the mail server configured through a home internet provider + home router.
I installed vsftpd server in one of my servers using "yum install vsftpd" command. NFS server is running in the other server and mounted as "/data" in this FTP server. root in FTP server has also root authority in NFS server. All the files and sub-folders under "/data" in FTP server have 755 or 766 mode. Even I modified vsftpd setting to allow root login.
When I login as root to FTP server with FileZilla client, I can see all the file list in root home directory and move to /data directory. I can download any file in a local HDD but I can not download any file in /data directory.
I am trying to set up a web based FTP site on my home server, I got ftp up and running and I can log into it using an ftp client but I want to set it up so I can get to it from the web. I put the directory in the www/html folder but that does not seem to help it
If anyone could point me in the right direction that would be great. I also need to let anonymous users get access to it.
Squid document says that Squid accepts only HTTP requests but speaks FTP on the server side when FTP object are requested.
We call Squid HTTP and FTP caching proxy server. Does it also caches FTP contents? Is it possible to configure FTP clients to use Squid cache? When we make an FTP request to an FTP site via Squid will it be bypassed?
I'm having a problem whereby I'm able to send mail to a mailbox from several different email addresses and SMTP servers (gmail, RoadRunner broadband), but I'm unable to send mail to the same address from one particular account, the SMTP server for which runs on a mediaTemple (dv) 3.0 box with CentOS 5 Final.I've spent a full workday on the forums, trying to troubleshoot the issue, and I'm running out of ideas.The server on which I'm having the mail processing problem is a mediaTemple (ve) running Ubuntu 10.04 x64 (Linux 2.6.18-028stab070.7 #1 SMP Fri Oct 1 13:53:00 MSD 2010 x86_64 GNU/Linux), with ISPConfig 3. Here's how I setup the mail-related aspects of the Ubuntu box:
I built a home server (NAS/WWW/SSH/media server etc) and chose CentOS 5 as the OS (stability, easy of configuration).I was just about to start tuning the power consumption when I realised that the kernel CentOS uses is so "old" that it does not support the latest reduced power consumption enhancements that Linux has achieved in big strides in the recent past (we are probably still talking 6-12+ months ago e.g. tickless kernel)..
So my questions; 1) I know CentOS was maybe not meant for home servers (certainly its not its primary purpose), but if it is, any ideas of what kind of power consumption it takes (I know its relative) and if there are particular power consumptions that are worthwhile?
2) Do you recommend me compiling my own 2.6.21+ kernel from kernel.org or am I just likely to have compatibility issues (I really did not want to do that) or when is CentOS 5.4 supposed to have a newer 2.6.21+ version kernel?
Was it wrong of me in principle to choose CentOS for a home server when I am power conscious? (I don't have a low-power VIA processor either but a P4 so I am really just hoping to make do with software changes).
I am having issues getting the modem it the dial-in server I have set up to answer on the correct ring. I have the /etc/inittab set:
Code: S1:2345:respawn:/sbin/mgetty -n 7 -x 6 -D ttyS2 yet I have to play with 'init q' and minicom to get it to answer on ring 7. Then a reboot destroys the setting and I have to go through the whole hassle again and it goes back to answering on the first ring.
This is not acceptable. This dial-in server is only a very back door into my network. It is only turned on when needed. Most of the time it is not powered up. When it is turned on it is by a non-tech person with out the ability to jump through the hoops to get it to answer on the correct ring.
Ideally I want this modem to just listen to the line after it stops ringing to check for a data signal and if it does not find it just hang up. If it finds a data signal then establish a connection and all that. That way it does not interfere with answering machine on the line. Google has yielded very little info about setting up dial-in servers. Modems are not used very much any more.
I just installed 5.4 on a home machine and I would like to get a UPS that will auto shutdown the server if the power goes out. Here an inexpensive tripplite from Costco. [URL] I only need it to shut down the 1 centos 5.4 machine if the power fails. Tripplite has linux software now that will shutdown machines. [URL]
i recently installed apache2 mysql php exc. to run a realtime stat site for my servers.the only thing is that the buttons/ images are not showing up.i checked that my GD was up to date and installed perl5 GD. dont know what else to check.my site with problems go to:http://24.20.177.228/stats_public
I would like to remove openldap from my Centos home-server..
Centos offers me:
Quote:
Removing: openldap i386 2.3.43-12.el5_5.2 installed 592 k openldap x86_64 2.3.43-12.el5_5.2 installed 598 k
[Code]...
..obviously I'll not remove openldap by this operation.. but my question is: there is another way to remove a single package with yum without "consequences"?
Im trying to make a webserver at home. I have a static IP Address of my ISP (o2) I have built a server ( 2.8 p4HT, 2GB Ram, 500GB HDD) Just to test... But, i dont know what to do in the IP Address settings for the IPv4 ( I think thats what it is) Do i put my static IP address in my ISP gave me, or the local IP of the server ( Wich is 192.168.1.72) Im realy confused. Ive tried everything i can think of, Reinstalled the os about 40 times up to now...
I'm trying to forward VNC requests from server a to server b, acctually I need the server a to be just VNC proxy and other servers behind server a can be responsible for VNC requests.I did it with this iptables rule but it didn't workAnd for notification all VNC sessions of mine are in range of 59100 to 59199
I'm just asking about a script (ex, bash script) that will let me know how many requests to each website on the server? So is there a way to get know from shell how many requests or connections to each web site on the server, in order to determine which website is under flood or DoS/DDoS attack.
I noticed in Fedora that in Authenticate Configs ->Advanced, that there is an option to "Create home directories on the first login".I'd like to know if its possible to enable that through a text config file on a CentOS box that has ldap authentication enabled. Right now it's complaining that the home folder does not exist upon loggin with an ldap account.
I have a CentOS box set up as a small home server right now. It is running a Apache Server. A SVN server and is going be a file server for all my friends. The problem is that it I need to add more SATA ports. RAID is not a big deal to me so the card can be a simple add in card. I am limited to PCI because the board does not have any pci expres slots. I am also interested in what hard drives that card would work with. I am hoping to keep them to 500 Gigs min. The motherboard has two built in SATA prots but I don't use them have had bad luck with them in the past
System: AMD Athlon 64 3400+ cpu MSI K8N Neo Series motherboard 3 IDE Hard Drives 1 CD Drive CentOS 5
I have an nfs server that is getting tons of mount requests, and i suspect it's becoming a performance issue. Even when noone is in the office I see mount/unmount requests in my logs. Is this normal?
/var/log/messages: Mar 30 10:32:42 morgan mountd[29643]: authenticated unmount request from uranus:757 for /morgan/users (/morgan/users)
Background:I have a small PC104 running opensuse 11.1. I'm writing a small client/server application for debugging purposes using mono and WCF. All the client does is make a request for information every 100ms.Problem:After about 20 requests the server quits responding to the client. Even if the client is running on the same machine. I've run the exact code on another laptop running opensuse as well as a laptop running windows and everything works great. Hopefully that closes the option that it is a code, mono, or opensuse flaw.Is there a kernel option or a network option that anyone knows about that might cause this sort of behavior?
We have a cisco ASA firewall at work,which redirects all http traffic to our webserver. We have to install a new website ,but it can't be installed to the same server. Setting up a squid reverse proxy can redirect the incoming http requests to the appropriate webserver? If yes, could I get some directions on howto?
using 'apache2ctl status' when my server is slow i've noticed that it seems to max out at '128 requests currently being processed' causing my site to have page loads of upto 20+ seconds (normal requests is about 30-50) and when it gets lower my server seems to go back to normal speeds so i'm wondering is there a way to increase that as my server more then has the resources to do soserver specs:Quote:AMD Athlon 64 X2 4800+ 2.5GHz)4GB DDR2 RAM100Mbits UnmeteredUbuntu Server 8.10apache2 settings:Quote:
I am currently running the latest version of Bind, and for some completely unknown reason I can NOT get queries to work for PTR records. All queries to the servers for reverse name lookup get query denied:
Using domain server: Name: 66.150.173.1 Address: 66.150.173.1#53 Aliases:
Host 27.173.150.66.in-addr.arpa not found: 5(REFUSED)
And it shows in my logs:
I am at my wits ends with the piece of crap. Can anyone shine some light on why this damn Bind install won't respond to these queries?
I recently upgraded my flavor (Arch, latest version) and now I am unable to connect to samba (latest version; obtained through pacman) either through Windows or Linux. My error logs reveal: (/var/log/samba/log.smbd)
[code]....
nmblookup shows what it should but smbclient -L gives the generic "Error NT_STATUS_UNSUCCESSFUL". I also tried to reinstall Samba. I am not sure why it continues to try for CUPS, as I do not have printers listed in smb.conf.
How can I set the outgoing port for the socket? In wireshark, my outgoing port is 1024, and i want to set it to 6800 (or a similar port) I see the outgoing broadcast-message in wireshark, but no answer. There are three ECU's in the LAN, which should answer. The following code is a mixture of C/C++ and jointed from different articles:
[code]...
In wireshark I can only see the outgoing message. But the "recvBuffer" (in the lower part of the code) contains the same content as the sendBuffer. Is it right, that I need a sender and further more a receiver? Or should I receive the broadcast-answer on the same socket on which I send the bc?
I'm working on a thorny mod_rewrite problem. I have a mac connected to my LAN running MAMP (Mac/Apache/MySQL/PHP). I request a non-existent file:
Code: http://192.168.1.2:8888/careers/db/1.html I see this in the mod_rewrite log file:
Code: 192.168.1.102 - - [14/Nov/2009:13:46:07 --0800] [192.168.1.2/sid#807df8][rid#8ec850/initial] (2) init rewrite engine with requested uri /careers/db/1.html 192.168.1.102 - - [14/Nov/2009:13:46:07 --0800] [192.168.1.2/sid#807df8][rid#8ec850/initial] (1) pass through /careers/db/1.html Note that the requested uri is /careers/db/1.html
If I change just the file extension on my request to PHP like so:
Code: [URL]
Then the request uri is totally different now. Here's the rewrite log:
Code: 192.168.1.102 - - [14/Nov/2009:13:47:23 --0800] [192.168.1.2/sid#807df8][rid#8fc850/initial] (2) init rewrite engine with requested uri /Applications/MAMP/htdocs/careers/ 192.168.1.102 - - [14/Nov/2009:13:47:23 --0800] [192.168.1.2/sid#807df8][rid#8fc850/initial] (1) pass through /Applications/MAMP/htdocs/careers/ Note that the requested uri now has a full path which does not include the actual filename, /Applications/MAMP/htdocs/careers/
What the heck? More info. If I request [URL], I can actually access p1.php. The requested uri is /careers/db/p1.php. The problem appears to be because the filename starts with a number. I can also request [URL] and get thru to 1.php with requested uri /careers/db//1.php. Does mod_rewrite think /1 refers to a backreference or something? Why can apache handle the html file request properly and not the php file request?
