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  • iptables port forward + nginx redirect problem

    - by easthero
    Here is my network browser = proxy(iptables port forward) = nginx server proxy: 192.168.10.204, forward 192.168.10.204:22080 to 192.168.10.10:80 nginx server: 192.168.10.10 nginx version:0.7.65 debian testing in nginx settings, I set: server_name _; server_name_in_redirect off; because my server has no domain now, access 192.168.10.10/index.html or 192.168.10.10/foobar is ok then access 192.168.10.204:22080/index.html is ok but access 192.168.10.204:22080/foobar, nginx 301 redirect to http://192.168.10.204/foobar how to fix? thanks telnet 192.168.10.204 22080 Trying 192.168.10.204... Connected to 192.168.10.204. Escape character is '^]'. GET /index.html HTTP/1.1 Host: 192.168.10.10 HTTP/1.1 200 OK Server: nginx/0.7.65 Date: Fri, 28 May 2010 10:07:29 GMT Content-Type: text/html Content-Length: 12 Last-Modified: Fri, 28 May 2010 07:25:12 GMT Connection: keep-alive Accept-Ranges: bytes hello world telnet 192.168.10.204 22080 Trying 192.168.10.204... Connected to 192.168.10.204. Escape character is '^]'. GET /test2 HTTP/1.1 Host: 192.168.10.10 HTTP/1.1 301 Moved Permanently Server: nginx/0.7.65 Date: Fri, 28 May 2010 10:04:20 GMT Content-Type: text/html Content-Length: 185 Location: http://192.168.10.10/test2/ Connection: keep-alive <html> <head><title>301 Moved Permanently</title></head> <body bgcolor="white"> <center><h1>301 Moved Permanently</h1></center> <hr><center>nginx/0.7.65</center> </body> </html>

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  • Can't connect to MySQL on CentOS 5 Error 13 - Permission Denied

    - by abszero
    Ok, I have an install of CentOS 5 running as a GuestOS in VirtualBox. The network card for the Cent box is bridged with that of my host OS so that the boxes can see each other. Cent has an IP of 192.168.1.108 and my Host box has an IP of .104. Everything, with regard to networking, seems to be working properly as I can access the Drupal install that is on the Cent box from a web browser on my host box by navigating to http://192.168.1.108 however when I try to configure the database for Drupal through the Drupal install interface I am getting the Can't connect to MySQL error. First I thought this might of been a Firewall issue so I stopped iptables but that had no effect. I thought maybe the user I had setup did not have access to the server so I tried root and that did not work. Searching on the net said that I needed to provide a bind-address parameter to my.cnf so I did that with no change. (As a side note the length of my my.cnf file was MUCH shorter than the ones presented online. In fact under mysqld all I have are datadir, socket, user, and bind-address. Is this normal or should the file be more verbose?) After a few hours of messing with permissions and such I tried using 'localhost' as the value for the database server, from my HOST OS, and the Drupal install kicked off without a problem. So while my issue is resolved I am curious as to why 'localhost' works and why 192.168.1.108 did not? Is there something i need to do to specifically access the MySQL box via the aforementioned IP? Thanks.

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  • Setting up MongoDB in High Performance Computing LSF linux cluster

    - by Dnaiel
    I am trying to run mongo in a LSF cluster computing environment where I have no admin control. Our sysadmin installed mongodb, but it is not running. Any ideas on what should I ask the server admin to do for it to run? Or if I could run it locally? [node1382]allelix> mongod --dbpath /users/dnaiel/ma/mongodb/ Tue Oct 2 21:33:48 [initandlisten] MongoDB starting : pid=22436 port=27017 dbpath=/seq/epigenome01/allelix/ma/mongodb/ 64-bit host=node1382 Tue Oct 2 21:33:48 [initandlisten] Tue Oct 2 21:33:48 [initandlisten] ** WARNING: You are running on a NUMA machine. Tue Oct 2 21:33:48 [initandlisten] ** We suggest launching mongod like this to avoid performance problems: Tue Oct 2 21:33:48 [initandlisten] ** numactl --interleave=all mongod [other options] Tue Oct 2 21:33:48 [initandlisten] Tue Oct 2 21:33:48 [initandlisten] db version v2.2.0, pdfile version 4.5 Tue Oct 2 21:33:48 [initandlisten] git version: f5e83eae9cfbec7fb7a071321928f00d1b0c5207 Tue Oct 2 21:33:48 [initandlisten] build info: Linux ip-10-2-29-40 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_49 Tue Oct 2 21:33:48 [initandlisten] options: { dbpath: "/users/dnaiel/ma/mongodb/" } Tue Oct 2 21:33:48 [initandlisten] journal dir=users/dnaiel/ma/mongodb/journal Tue Oct 2 21:33:48 [initandlisten] recover begin Tue Oct 2 21:33:48 [initandlisten] info no lsn file in journal/ directory Tue Oct 2 21:33:48 [initandlisten] recover lsn: 0 Tue Oct 2 21:33:48 [initandlisten] recover /seq/epigenome01/allelix/ma/mongodb/journal/j._0 Tue Oct 2 21:33:48 [initandlisten] recover cleaning up Tue Oct 2 21:33:48 [initandlisten] removeJournalFiles Tue Oct 2 21:33:48 [initandlisten] recover done Tue Oct 2 21:33:48 [websvr] admin web console waiting for connections on port 28017 Tue Oct 2 21:33:48 [initandlisten] waiting for connections on port 27017 It basically waits forever and cannot start mongodb. These servers are not webservers but they do have network access, it's a cloud computing LSF environment system. Any advice would be welcome, thanks in advance.

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  • One Active Directory, Multiple Remote Desktop Services (Server 2012 solution)

    - by Trinitrotoluene
    What I am trying to do is quite complex, so I figured I'd throw it out to a wider audience to see if anyone can find a flaw. What I am trying to do (as an MSP/VAR) is design a solution that will give multiple companies a session based remote desktop (companies that need to be kept completely seperate), using only a handful of servers. This is how I imagine it at the moment: CORE SERVER - Server 2012 Datacentre (All below are HyperV servers) Server1: Cloud-DC01 (Active Directory Domain Services for mycloud.local) Server2: Cloud-EX01 (Exchange Server 2010 running multi tenant mode) Server3: Cloud-SG01 (Remote Desktop Gateway) CORE SERVER 2 - Server 2012 Datacentre (All below are HyperV servers) Server1: Cloud-DC02 (Active Directory Domain Services for mycloud.local) Server2: Cloud-TS01 (Remote Desktop Session Host for Company A) Server3: Cloud-TS02 (Remote Desktop Session Host for Company B) Server4: Cloud-TS03 (Remote Desktop Session Host for Company C) What I thought about doing was setting up each Organisation in their own OU (perhaps creating their OU structure based on the Excahnge 2010 tenant OU structure so the accounts are linked). Each company would get a Remote Desktop Session Host server that would also serve as a file server. This server would be seperated from the rest on its own range. The server Cloud-SG01 would have access to all these networks and route the traffic to the appropriate network when a client connects and authenticated so they are pushed onto the correct server (Based on session collections in 2012). I won't lie this is something I have come up with quite quickly so there may well be something gapingly obvious that I am missing. Any feedback would be appreciated.

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  • A star vs internet routing pathfinding

    - by alan2here
    In many respects pathfinding algorythms like A star for finding the shortest route though graphs are similar to the pathfinding on the internet when routing trafic. However the pathfinding routers perform seem to have remarkable properties. As I understand it: It's very perfromant. New nodes can be added at any time that use a free address from a finite (not tree like) address space. It's real routing, like A*, theres never any doubling back for example. IP addresses don't have to be geographicly nearby. The network reacts quickly to changes to the networks shape, for example if a line is down. Routers share information and it takes time for new IP's to be registered everywhere, but presumably every router dosn't have to store a list of all the addresses each of it's directions leads most directly to. I can't find this information elsewhere however I don't know where to look or what search tearms to use. I'm looking for a basic, general, high level description to the algorithms workings, from the point of view of an individual router.

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  • Windows 7 XP Mode-Program not ending properly

    - by iceman33
    We currently have recently have implemented a few new machines to our network with Windows 7 Enterprise 64-bit installed on them. We have a program that is incompatible with Windows 7 right now and we have it installed on the Windows XP Mode that we have setup on there. There is a shortcut that is on the desktop to have it work with integration services and that part is working successfully. Occasionally, this program will stop working over the server on which it connects to has to get rebooted and the program has to get closed out. However, that process that is in the task manager doesn't seem to close out properly. So in order to correctly get the program shut down, we have to make the users log back into xp mode and do a Ctrl+Alt+Delete to kill the process or have to go back into the machine to perform a restart. I was wondering if anyone has come across a way within XP Mode yet that when the virtual machine goes into hibernation mode that it would shut down all processes or if when restarting the virtual machine your normal machine that it would shut everything down in the virtual XP mode as well and not just keep that program running? Any help would be greatly appreciated.

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  • How to tell statd to use portmap on a non-localhost ipadress?

    - by jneves
    How can I make statd connect to other IP address other than 127.0.0.1? I have a server that is connected to 2 different networks (one is public, another a private). I want it to provide a NFS share for only the private network. The host in an ubuntu 8.04. The private ip address is 192.168.1.202 I changed /etc/default/portmap to add: OPTIONS="-i 192.168.1.202" The command lsof -n | grep portmap returns: portmap 10252 daemon cwd DIR 202,0 4096 2 / portmap 10252 daemon rtd DIR 202,0 4096 2 / portmap 10252 daemon txt REG 202,0 15248 13461 /sbin/portmap portmap 10252 daemon mem REG 202,0 83708 32823 /lib/tls/i686/cmov/libnsl-2.7.so portmap 10252 daemon mem REG 202,0 1364388 32817 /lib/tls/i686/cmov/libc-2.7.so portmap 10252 daemon mem REG 202,0 31304 16588 /lib/libwrap.so.0.7.6 portmap 10252 daemon mem REG 202,0 109152 16955 /lib/ld-2.7.so portmap 10252 daemon 0u CHR 1,3 960 /dev/null portmap 10252 daemon 1u CHR 1,3 960 /dev/null portmap 10252 daemon 2u CHR 1,3 960 /dev/null portmap 10252 daemon 3u unix 0xecc8c3c0 4332992 socket portmap 10252 daemon 4u IPv4 4332993 UDP 192.168.1.202:sunrpc portmap 10252 daemon 5u IPv4 4332994 TCP 192.168.1.202:sunrpc (LISTEN) portmap 10252 daemon 6u REG 0,12 289 3821511 /var/run/portmap_mapping I defined in /etc/hosts the following: 192.168.1.202 server.local In /etc/default/nfs-common I changed STATDOPTS to: STATDOPTS="--name server.local" Yet when I run /etc/init.d/nfs-common start if fails to start. The log shows: Jun 8 06:37:44 cookwork-web1 rpc.statd[9723]: Version 1.1.2 Starting Jun 8 06:37:44 cookwork-web1 rpc.statd[9723]: Flags: Jun 8 06:37:44 cookwork-web1 rpc.statd[9723]: unable to register (statd, 1, udp). An strace -f rpc.statd -n server.local results in a lot of lines, including this one: sendto(9, "\200]3\362\0\0\0\0\0\0\0\2\0\1\206\240\0\0\0\2\0\0\0\1"..., 56, 0, {sa_family=AF_INET, sin_port=htons(111), sin_addr=inet_addr("127.0.0.1")}, 16) = 56

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  • Installing and running a guest OS on KVM-qemu with only serial console access

    - by nixnotwin
    I am trying to installing a bsd distro with virt-installer. With a Linux distro I used this: virt-install -n debian -r 1024 --vcpus=1 --accelerate -v --disk /var/kvm/installation-disks/debian.img,size=6--nographics --network=bridge:br0,model=ne2k_pci,mac=52:54:00:66:68:09 -l http://ftp.de.debian.org/debian/dists/squeeze/main/installer-amd64/current/images/ -x console=ttyS0,115200 This loads the installer directly from the online mirror. With Fedora I used this mirror: http://www.nic.funet.fi/pub/mirrors/fedora.redhat.com/pub/fedora/linux/releases/16/Fedora/x86_64/os/ Are there such mirrors for freebsd or openbsd? The reason I want direct installable ftp/http mirrors is because I can access my physical server only via ssh, and it doesn't have a X server or a window manager to give me a VNC GUI. When I tried installing centos 6 with an online mirror I was able to finish the installation via serial console, but after I rebooted it, the serial console never worked for me. I tried everything possible---editing menu.lst, inttab and securtty files. Fedora 16 booted fine from serial console, but got stuck when it loaded anaconda installer. I tried editing freebsd iso installation media by adding serial console option to boot option. And installation was successful. But couldn't boot into it becuase it wasn't giving console acess. I couldn't edit any files as ufs partition cannot be loaded with write access on my Ubuntu server 10.04. Only debian squeeze worked well, it worked for me even without editing a single configuration file. I want to have CLI versions of fedora/centos and freebsd/openbsd. But, looks like there isn't any hope for me to have them, as I have to depend on a serial console to do everything.

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  • Can I take my ReadyNAS drive in Raid1 and plug it straight into new different machine?

    - by jacko
    I would assume that I can just take my HDD out of my NAS (in raid1 mirror) and plug it into another enclosure and have it work off the bat but I'd like to make sure... Any ideas? Edit: My current setup is a Netgear ReadyNAS in (hardware) raid1. I'm hoping to replace this with a home theatre type PC (possibly running Ubuntu), and would like to migrate my data without having to do a bulk transfer over my network between the 2 machines. Can anyone confirm the case for the Netgear ReadyNAS? Edit: Ok after further reading it seems that the ReadyNAS Duo formats my drive as ext3 in 16k blocks. There are instructions for mounting a drive into a linux box here: Mounting Sparc-based ReadyNAS Drives in x86-based Linux There is also talk about a linux image here: ReadyNAS Data Recovery - VMware recovery tool I'm not sure whether this means they ReadyNAS actually implements software raid under the hood, or what? So it appears like it IS do-able, but do any of you linux guru's know whether this is viable and whether the fact that they are in raid 1 affect matters?

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  • OpenSolaris livecd, NForce NIC driver, and NTFS USB mounting. Oh My!

    - by Jake Wharton
    I'm attempting to install OpenSolaris 2009.06 on my server. Before I do I would like to test that everything works and am running in to problems. It has an Abit AN-M2 motherboard with an NForce chipset. The driver config utility says that I need a third-party driver and links me to http://homepage2.nifty.com/mrym3/taiyodo/eng/. Scrolling to the bottom, I have downloaded both tgzs just in case. Now the fun part: The only way to get this on to the computer is via a USB drive since I can't access the network. Also, install CD in the drive otherwise I'd just burn them to DVD. Since my USB key is NTFS formatted I cannot mount it since the install CD seems to be lacking NTFS drivers which require more downloaded packages. What should I do? The server will simply be a dumb NAS and I know that there exists other OpenSolaris-based flavors such as Nexenta but from what I read the stock install is likely the best. If this is not the case and pursuing a different flavor is required or better I will also accept that as an answer (but please don't jump straight to it).

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  • Filesharing mac 10.6 with windows vista

    - by adam
    Ive followed all the tutorials on the net to no avail. I can see my vista pc in finder on the mac but when I click on it tries to connect but fails. The same is true from vista, it can see the mac but i cant connect. Wont even offer a login box. So I tried to troubleshoot by using a 3rd computer with xp. It joined the network and can access both the mac and vista on the same workgroup. Mac sees it and it shows under finder but i cant access it by clicking on the icon i have to access by using the ip of the xp machine...strange. Ive turned off all my firewalls. The fact that xp can connnet to the others and vice versa boggles my mind why vista and mac cant connect directly. Oh and pings indicates the same. I.e. xp has no problem but mac to vista and vice versa fails. Can anyone help.

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  • Can I use CNAME with ip address? Why If works (sometimes)?

    - by Maciek Sawicki
    I believe that the easiest answer for the first question is "No, You have "A" for this", but I accidentally setup some subdomain using CNAME pointing to ip address and it worked on few computers in my office. I wonder how it was possible? Now, when I'm checking it from home I have following error: beast:~ viroos$ host somesubdomain.somedomain.com Host somesubdomain.somedomain.com not found: 3(NXDOMAIN) I'm 100% it used to work at my office (currently it looks like it doesn't, but I'm checking it on different machine). Therefore I'm not 100% if it worked due to some special network setup or because I tested it just after adding DNS entry. I know this story sounds, a little crazy/incredibly, but can someone help me solve this puzzle. //edit: I'm adding dig output ; <<>> DiG 9.6-ESV-R4-P3 <<>> somesubdomain.somedomain.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 60224 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;somesubdomain.somedomain.com. IN A ;; ANSWER SECTION: somesubdomain.somedomain.com. 67 IN CNAME xxx.xxx.xxx.xx1. ;; AUTHORITY SECTION: . 1800 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2012040901 1800 900 604800 86400 ;; Query time: 72 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Tue Apr 10 00:11:01 2012 ;; MSG SIZE rcvd: 136

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  • Optimizing Disk I/O & RAID on Windows SQL Server 2005

    - by David
    I've been monitoring our SQL server for a while, and have noticed that I/O hits 100% every so often using Task Manager and Perfmon. I have normally been able to correlate this spike with SUSPENDED processes in SQL Server Management when I execute "exec sp_who2". The RAID controller is controlled by LSI MegaRAID Storage Manager. We have the following setup: System Drive (Windows) on RAID 1 with two 280GB drives SQL is on a RAID 10 (2 mirroed drives of 280GB in two different spans) This is a database that is hammered during the day, but is pretty inactive at night. The DB size is currently about 13GB, and is used by approximately 200 (and growing) users a day. I have a couple of ideas I'm toying around with: Checking for Indexes & reindexing some tables Adding an additional RAID 1 (with 2 new, smaller, HDs) and moving the SQL's Log Data File (LDF) onto the new RAID. For #2, my question is this: Would we really be increasing disk performance (IO) by moving data off of the RAID 10 onto a RAID 1? RAID 10 obviously has better performance than RAID 1. Furthermore, SQL must write to the transaction logs before writing to the database. But on the flip side, we'll be reducing both the size of the disks as well as the amount of data written to the RAID 10, which is where all of the "meat" is - thereby increasing that RAID's performance for read requests. Is there any way to find out what our current limiting factor is? (The drives vs. the RAID Controller)? If the limiting factor is the drives, then maybe adding the additional RAID 1 makes sense. But if the limiting factor is the Controller itself, then I think we're approaching this thing wrong. Finally, are we just wasting our time? Should we instead be focusing our efforts towards #1 (reindexing tables, reducing network latency where possible, etc...)?

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  • How should I configure my Active Directory servers so that if one goes down, users are not kicked off SQL?

    - by Matty Brown
    Today, we shut down one of our Active Directory servers during office hours to check the loading on a UPS. Since all the server did was provide Active Directory in a separate building incase the main building caught fire, or whatever, we didn't think it would have any effect on our users. Seconds after the server was shut down, we had a dozen phone calls from users experiencing this issue:- [Microsoft SQL Server Login] SQLState: '28000' [Microsoft][ODBC SQL Server Driver][SQL Server]Login failed. The login is from an untrusted domain and cannot be used with authentication. Once we realized what had happened, we quickly rebooted the down Active Directory server. Problem solved. But why did this happen. And what if one day a server has a breakdown and is offline for hours, or days? Shouldn't the other Active Directory servers in the domain service authentication requests without disruption to users? We have 3 Windows Server 2003 Standard servers running Active Directory as Domain Controllers with Global Catalogs, all physically located on the same network at Gigabit speeds. I believe the domain was originally Windows Server 2000, or maybe even NT 4.0. Could the issue be to down to old Group Policies inherited from these old server OS's, or some default setting in Active Directory that needs changing?

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  • Migrating away from LVM

    - by Kye
    I have an Ubuntu home media server setup with 4.5TB split across a few hard-drives (1x3TB, 2x1TB) and I'm using LVM2 to manage the volumes. I have recently added a 60GB SSD to my server, and I wish to use it to house the 'root' partition of my server (which is currently under the LVM group). I don't want to simply add it to the LVM volume group, because (afaik) there's no way to ensure that the SSD will be used for the root filesystem. If I just throw it at the VG, it may be used to house my media, which would defeat the purpose of having the SSD in the first place. I feel that my only solution is to somehow remove my root partition from the LVM setup and copy it across to the SSD. My boot partition is, of course, not part of the LVM group. My disk setup is as follows: 60GB SSD: EMPTY. 1TB HDD: /boot, LVM space. 1TB HDD: LVM space. 3TB HHD: LVM space. I have a few logical volumes. my root (/), a 'media' volume for my media collection, a backup one for my network backups.etc. Does anyone have any advice as to how to go about this? My end goal is to have the 60GB SSD used for my boot and root partitions, with everything else on the 3TB/1TB/1TB hard-drives.

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  • need advice on data center move, communication with both facilities during transition

    - by Brian Roden
    We are beginning the process of moving to a new facility. Office and warehouse operations will both be moving, and we must get shipping operations up and running at the new location while continuing to ship from the old location. Our contract with some third-party warehouse tenants requires two business day turnaround (only weekends and holidays excluded), so we can't have major downtime during the move. We would like to keep our 172.16.60/61.xxx internal address space in use throughout the move. Is it possible to keep using this same internal range, and have our existing WatchGuard Firebox 520 and whatever router we get for the other location (preferably the same model) just treat both locations as one network, leaving our host IPs the same throughout the move? Renumbering the servers when they move isn't a big deal, but our wireless terminals for order picking in the warehouse have fixed IPs (and a fixed IP, non-DNS reference to the host they speak with) and would be a massive undertaking to reconfigure when the servers move (each device would have to be reconfigured at least 2 times -- some when we start using them in the new building and the host is still here, all of them in both locations when the host moves to the new building, and the rest when they finally make the move to the new building). We're trying to avoid that if possible.

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  • Computer turns itself on after any off mode

    - by Patrick
    Whenever I shut down my computer, or put it in sleep/hybernate, it turns on after two seconds. It doesn't post, it just powers on and then idles. To actually turn it off, I switch off the psu. The problem is now, whenever I switch the psu on and try to boot, it doesn't always turn on. It takes a good amount of flicking the psu switch on and off before the motherboard lights up. So far I've determined the things its not: its not caused by the mouse or network waking up the computer. I've been able to go into hybernate for the past year. And all "wake on X" settings in the bios are diabled. its not a scheduled task waking up the computer at a given hour, it occurs every single time its not due to an upgrade or new installation, since I haven't done either in a very long time I'm sure its a hardware issue. So I'd like to know, is my psu dead, or the motherboard? The psu is an Antec Earthwatts 600w, the motherboard is an Asus P5Q-E, both one year old.

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  • Client certificate based encryption

    - by Timo Willemsen
    I have a question about security of a file on a webserver. I have a file on my webserver which is used by my webapplication. It's a bitcoin wallet. Essentially it's a file with a private key in it used to decrypt messages. Now, my webapplication uses the file, because it's used to recieve transactions made trough the bitcoin network. I was looking into ways to secure it. Obviously if someone has root access to the server, he can do the same as my application. However, I need to find a way to encrypt it. I was thinking of something like this, but I have no clue if this is actually going to work: Client logs in with some sort of client certificate. Webapplication creates a wallet file. Webapplication encrypts file with client certificate. If the application wants to access the file, it has to use the client certificate. So basically, if someone gets root access to the site, they cannot access the wallet. Is this possible and does anyone know about an implementation of this? Are there any problems with this? And how safe would this be?

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  • Configured Samba to join our domain, but logon fails from Windows machine

    - by jasonh
    I've configured a Fedora 11 installation to join our domain. It seems to join successfully (though it reports a DNS update failure) but when I try to access \\fedoraserver.test.mycompany.com I'm prompted for a password. So I enter adminuser and the password and that fails, so I try test.mycompany.com\adminuser and that too fails. What am I missing? EDIT (Update 9/1/09): I can now connect to the machine and see the shares on it (see my response to djhowell's answer) but when I try to connect, I get an error saying The network path was not found. I checked the log entry on the Fedora computer for the computer I'm connecting from (/var/log/samba/log.ComputerX) and it reads: [2009/09/01 12:02:46, 1] libads/cldap.c:recv_cldap_netlogon(157) no reply received to cldap netlogon [2009/09/01 12:02:46, 1] libads/ldap.c:ads_find_dc(417) ads_find_dc: failed to find a valid DC on our site (Default-First-Site-Name), trying to find another DC Config files as of 9/1/09: smb.conf: [global] Workgroup = TEST realm = TEST.MYCOMPANY.COM password server = DC.TEST.MYCOMPANY.COM security = DOMAIN server string = Test Samba Server log file = /var/log/samba/log.%m max log size = 50 idmap uid = 15000-20000 idmap gid = 15000-20000 windbind use default domain = yes cups options = raw client use spnego = no server signing = auto client signing = auto [share] comment = Test Share path = /mnt/storage1 valid users = adminuser admin users = adminuser read list = adminuser write list = adminuser read only = No I also set the krb5.conf file to look like this: [logging] default = FILE:/var/log/krb5libs.log kdc = FILE:/var/log/krb5kdc.log admin_server = FILE:/var/log/kadmind.log [libdefaults] default_realm = test.mycompany.com dns_lookup_realm = false dns_lookup_kdc = false ticket_lifetime = 24h forwardable = yes [realms] TEST.MYCOMPANY.COM = { kdc = dc.test.mycompany.com admin_server = dc.test.mycompany.com default_domain = test.mycompany.com } [domain_realm] dc.test.mycompany.com = test.mycompany.com .dc.test.mycompany.com = test.mycompany.com [appdefaults] pam = { debug = false ticket_lifetime = 36000 renew_lifetime = 36000 forwardable = true krb4_convert = false } I realize that there might be an issue with EXAMPLE.COM in there, however if I change it to TEST.MYCOMPANY.COM then it fails to join the domain with a preauthentication failure. As of 9/1/09, this is no longer the case.

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  • Is iptable capable of this or should I go with mod_proxy?

    - by Jesper
    I'm trying to configure my network to receive an incoming connection on one device and then redirect it to another device on a specific port. Right now I'm on about port 80 and a device running apache. The problem I'm facing is that when the forwarding is done it also sets the source ip to the first device instead of the source ip the user that connects to the service has. Let me illustrate it: [Internet User] = 7.7.7.7 connects to [Device 1] = 1.1.1.1:80 [Device 1] forwards it to [Device 2] = 1.1.1.2:80 [Device 2] outputs response that [Internet User] sees So on [Device 2] I will naturally see [Device 1]s IP in the logs, but I wanna see if there is a way to connect the internet user through [Device 1] to [Device 2] while seeing the real source IP in the logs on [Device 2]. Is that possible? My rule-set looks like this at the moment: (on Device 1) iptables -P FORWARD ACCEPT iptables -t nat -I PREROUTING -j DNAT -p tcp --dport 80 --to-destination 1.1.1.2:80 iptables -t nat -I POSTROUTING -j SNAT -p tcp -d 1.1.1.2 --to-source 1.1.1.1 On [Device 2] it accepts all incoming on port 80 from [Device 1] as well as accepts all related and established connections. So, would there be any way to get the real source onto [Device 2]? Let me know if you need more information!

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  • Website Use Monitoring for 3 People

    - by linkedlinked
    I work in an IT startup with 2 partners, and I'm the programmer/IT guy -- in other words, the work horse. To make a long story short, I'm doing most of the work right now, while they spend all day on Facebook. That's OK, because they're paying my salary, but if the project fails, I'm sure they'll blame me for it (I'm doing my best to make sure that doesn't happen!), and I want some sort of recourse. I already have an app that blocks time-wasters on my local PC, and keeps logs of when the app is enabled (so I can say "I had Facebook blocked from 9am-5pm today.") Is there any way I can get a brief summary of the most heavily visited sites, split up by client PC? At the end of the month, I want to be able to say "You both load Facebook, on average, every 10 minutes. You spend hours a day on Youtube, and haven't opened up our bugtracker in weeks" and maybe have a nifty chart or graph to match it. We have a crappy D-Link router, and no IT budget. They are both on Windows Vista, I run Ubuntu Linux. I don't want to install any monitoring software on their PC, but I'm totally fine with, say, routing all the network traffic through my machine. I guess I can think of lots of ways to accomplish this (telnet into JSSH and list open tabs? log all the DNS requests, per-domain? even thinking of setting up a webcam on my desk and just keeping 5-minute snapshots...), I just don't really know where to start. Any advice is appreciated, thanks!

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  • Help setting up an secondary authoritative DNS server.

    - by GLB03
    We have three Authoritative DNS servers and three recursive/caching DNS servers on my campus. Authoritative servers DNS1- Windows 2003 DNS2- Old Red Hat ----- Replacing w/ newer version DNS3- Windows 2008 (I installed) Caching and Recursive resolvers servers Server1- Windows 2003 Server2- CentOS 5.2 (I installed) Server3- CentOS 5.3 (I installed) I am replacing DNS2 with a newer Red Hat version, but have no documentation on how it was implemented. I have setup caching and windows authoritative servers, but not a linux secondary authoritative server. I have a perl script from the original server that pulls data from our DNS1 server. We use DJBDNS and TinyDNS on our linux servers. Our Network Engineer says the DNS2 server I am replacing is an authoritative server that doesn't need to be caching, but the only instructions I see is for an Authoritative server that does caching as well. Can someone point me in the right directions. I thought I was on the right track with using these instructions but when I query my new dns server I get "No response from server", I have temporarily disabled iptables to eliminate it from being an issue. ps -aux | grep dns avahi 3493 0.0 0.2 2600 1272 ? Ss Apr24 0:05 avahi-daemon: running [newdns2.local] root 5254 0.0 0.1 3920 680 pts/0 R+ 09:56 0:00 grep dns root 6451 0.0 0.0 1528 308 ? S Apr29 0:00 supervise tinydns dnslog 6454 0.0 0.0 1540 308 ? S Apr29 0:00 multilog t ./main tinydns 9269 0.0 0.0 1652 308 ? S Apr29 0:00 /usr/local/bin/tinydns

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  • Remote Socket Read In Multi-Threaded Application Returns Zero Bytes or EINTR (104)

    - by user39891
    Hi. Am a c-coder for a while now - neither a newbie nor an expert. Now, I have a certain daemoned application in C on a PPC Linux. I use PHP's socket_connect as a client to connect to this service locally. The server uses epoll for multiplexing connections via a Unix socket. A user submitted string is parsed for certain characters/words using strstr() and if found, spawns 4 joinable threads to different websites simultaneously. I use socket, connect, write and read, to interact with the said webservers via TCP on their port 80 in each thread. All connections and writes seems successful. Reads to the webserver sockets fail however, with either (A) all 3 threads seem to hang, and only one thread returns -1 and errno is set to 104. The responding thread takes like 10 minutes - an eternity long:-(. *I read somewhere that the 104 (is EINTR?), which in the network context suggests that ...'the connection was reset by peer'; or (B) 0 bytes from 3 threads, and only 1 of the 4 threads actually returns some data. Isn't the socket read/write thread-safe? I use thread-safe (and reentrant) libc functions such as strtok_r, gethostbyname_r, etc. *I doubt that the said webhosts are actually resetting the connection, because when I run a single-threaded standalone (everything else equal) all things works perfectly right, but of course in series not parallel. There's a second problem too (oops), I can't write back to the client who connect to my epoll-ed Unix socket. My daemon application will hang and hog CPU 100% for ever. Yet nothing is written to the clients end. Am sure the client (a very typical PHP socket application) hasn't closed the connection whenever this is happening - no error(s) detected either. Any ideas? I cannot figure-out whatever is wrong even with Valgrind, GDB or much logging. Kindly help where you can.

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  • Grant HTTP access based on unix user group

    - by Sander Marechal
    Is it possible to grant network access or HTTP access based on a user's group? At my company we want to set up an internal composer server using Satis to manage packages for the projects we write (e.g. on repository.mycompany.com), with the packages themselves in our SVN server (svn.mycompany.com). We have several webservers with many different users on them. Some users should be able to reach the composer and SVN server. Some should not. Users that should be able to reach these servers all belong to the same group. How can I set up Apache on the Composer and SVN server to only grant access to those users in that group? Alternatively, can I set up the webservers in such a way that only users from that group are able to make a connection to our Composer and SVN servers? The best thing we have come up with so far is using SSL client certificates. We simply place a client certificate on all servers which can be used to access Composer and SVN. Only the right usergroup will have read access to the certificate. A bit clunky but it may work. But I'm looking for something better.

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  • IP-dependent local port-forwarding on Linux

    - by chronos
    I have configured my server's sshd to listen on a non-standard port 42. However, at work I am behind a firewall/proxy, which only allow outgoing connections to ports 21, 22, 80 and 443. Consequently, I cannot ssh to my server from work, which is bad. I do not want to return sshd to port 22. The idea is this: on my server, locally forward port 22 to port 42 if source IP is matching the external IP of my work's network. For clarity, let us assume that my server's IP is 169.1.1.1 (on eth1), and my work external IP is 169.250.250.250. For all IPs different from 169.250.250.250, my server should respond with an expected 'connection refused', as it does for a non-listening port. I'm very new to iptables. I have briefly looked through the long iptables manual and these related / relevant questions: http://serverfault.com/questions/57872/iptables-question-forwarding-port-x-to-an-ssh-port-of-different-machine-on-the-n http://serverfault.com/questions/140622/how-can-i-port-forward-with-iptables However, those questions deal with more complicated several-host scenarios, and it is not clear to me which tables and chains I should use for local port-forwarding, and if I should have 2 rules (for "question" and "answer" packets), or only 1 rule for "question" packets. So far I have only enabled forwarding via sysctl. I will start testing solutions tomorrow, and will appreciate pointers or maybe case-specific examples for implementing my simple scenario. Is the draft solution below correct? iptables -A INPUT [-m state] [-i eth1] --source 169.250.250.250 -p tcp --destination 169.1.1.1:42 --dport 22 --state NEW,ESTABLISHED,RELATED -j ACCEPT Should I use the mangle table instead of filter? And/or FORWARD chain instead of INPUT?

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