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• Execute remote shell commands on windows XP embedded

  - by BartD

  The following situation: We have Windows XP Embedded clients that have all admin shares disabled and only have read-only shares (for security reasons). What we want to do is run remote shell (dos) commands on these machines. At first we looked at PsExec & BeyondExec applications (and all sorts of variants), but all of them rely on having at least an admin$ share, which are disabled on our systems. Telnet is not secure enough, as is RSHD servers. So we looked at the next obvious solution: and SSH server. We also prefer an open-source or freeware solution that is still maintained. I looked at freeSSH server for Windows, but that didn't run stable, I tried installing copSSH, WinSSH & openSSH for Windows, but none of these applications seem to work on Windows XP Embedded. The services can either not be installed or cannot be started. I don't know why. Some kind of dependency that is missing. So are there any other solutions out there? I don't care about having to an agent installation locally of some kind on each system, as long as the size of the software is small enough. Can someone suggest some alternatives to what I've already mentioned? Thank you very much.

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• How to organize deployment process in Chef-controlled environment?

  - by Alex

  I have a web Linux-based infrastructure which consists of 15 virtual machines and over 50 various services. It is fully controlled by Chef. Most of the services are developed internally. Basically the current deployment process is triggered by a shell script. A build system (a mix of Python and shell scripts) packages the services as .deb files and puts these packages into a repo. It runs apt-get update on all 15 nodes then because the standard Chef apt cookbook only runs apt-get once per day and we definitely do not want to run apt-get update unconditionally on each chef-client wake. The build system restarts chef-client daemons on all 15 nodes finally (we need this step because of pull Chef nature). The current process has a number of drawbacks we want to address. First off, it is asynchronous because the deployment script does not check chef-client logs after restart so we don't even know if the deployment was successful. It does not even wait for Chef clients to complete the cycle. Second, we definitely do not want to force chef-client restarts on all nodes because we usually deploy only a small number of packages. And third, I am not quite sure using chef-client for deployment is legitimate, probably we are just doing it wrong from the start. Please share your thoughts/experience.

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• Configure samba server for Unix group

  - by Bird Jaguar IV

  I'm trying to set up a samba server with access for users in the Linux (RHEL 6) "wheel" group. I am basing smb.conf off of the example here where it goes through the [accounting] example. In my smb.conf I have [tmp] comment = temporary files path = /var/share valid users = @wheel read only = No create mask = 0664 directory mask = 02777 max connections = 0 (rest of the output from $ testparm /etc/samba/smb.conf is here). And groups `whoami` returns user01 : wheel. When I use the following command from another machine (Mac OS) as the Linux user (user01): $ smbclient -L NETBIOSNAME/tmp it asks for a password, I hit return without a password, and get: Enter user01's password: Anonymous login successful Domain=[DOMAIN] OS=[Unix] Server=[Samba 3.6.9-151.el6_4.1] Sharename Type Comment --------- ---- ------- tmp Disk temporary files IPC$ IPC IPC Service (Samba Server Version 3.6.9-151.el6_4.1) But when I try $ smbclient //NETBIOSNAME/tmp I try entering the password I use for the Linux login, and get a bunch of stuff logged, including check_sam_security: Couldn't find user 'user01' in passdb. ... session setup failed: NT_STATUS_LOGON_FAILURE (I can give more logging information if it would be helpful.) I can't find a reference to more steps I need to add group users in the resource. Should I be manually adding samba users from the group somehow? Thank you

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• In Icinga (Nagios), how do I configure hosts with multiple IPs?

  - by gertvdijk

  I'm setting up Icinga (Nagios fork) and I have some machines with multiple interfaces. Some services are only listening on one of them and to check them correctly, I like to know if it's possible to have multiple IP addresses configured for a single host in Icinga. Here's a minimal example: Remote Server: eth0: 1.2.3.4 (public IP) eth1: 10.1.2.3 (private IP, secure tunnel) Apache listening on 1.2.3.4:80. (public only) OpenSSH listening on 10.1.2.3:22. (internal network only) Postfix SMTP listening on 0.0.0.0:25 (all interfaces) Icinga Server: eth0: 10.2.3.4 (private IP, internet access) Now if I define a host: define host { use generic-host host_name server1 alias server1.gertvandijk.net address 10.1.2.3 } This will not check the HTTP status correctly. And defining an additional host: define host { use generic-host host_name server1-public alias server1.gertvandijk.net address 1.2.3.4 } will check everything, but shows up as two independent hosts. Now I want to 'aggregate' these two hosts to show up as a single host, yet providing an easy configuration to check the services on their proper address. What is the most elegant number-of-configuration-lines-saving solution to this? I read about several plugins available to workaround this, but I can't figure out what is the current way to address it. Solutions go back to 2003, but I'm running Icinga 1.7.1, already capable of the address6 option, yet that triggers IPv6-only resolving on the hostname... Ideally, I wish to configure Icinga to be intelligent enough to know that the Postfix instance running on 10.1.2.3:25 is the same as 1.2.3.4:25 and thus not triggering two alarms. I guess this must have been tackled before and sysadmins have it set up now. Please share your solution to this. Thanks! :)

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• Windows 7 comments field missing when browsing network

  - by Toymangenie

  I have just purchased three Windows 7 Professional Dell 64-bit PCs for testing prior to upgrading our company’s 120+ PCs from Windows XP Professional. The setup is a standard domain with a Windows Server 2003 32-bit server. We name each PC XP1 to XP150 so that when users join or leave, I don’t have to rename the PC. We use the Description field to allocate the user’s name to each PC. We also have a share set up on each PC using the user’s name. When I browse the network using Windows Explorer in XP, I get a useful display. The left pane showing the PC number and the right pane showing NAME and COMMENTS So, for example I would see: XP01 Fred Bloggs (Each PC on a new row.) The right pane is my main tool for administering the network. I can easily see the PC number and the name of the user. However, in Windows 7, this seems to have been thrown out of the window and replaced with fields that I do not need and in my case always display the same info. "Name", "Category", "Workgroup", "Network Location" In my case the Name column gives the PC number (XP10) etc and all three other columns display identical useless information. So I can’t see who is using XP10. When I am in “help desk” mode, I would naturally ask the user’s name and use my remote desktop client to view their screen. The user isn’t aware of their PC name, so I am finding it impossible to match the user name with a PC number. Any ideas how to overcome this "by design" change to Windows 7?

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• Scaling databases with cheap SSD hard drives

  - by Dennis Kashkin

  Hey guys! I hope that many of you are working with high traffic database-driven websites, and chances are that your main scalability issues are in the database. I noticed a couple of things lately: Most large databases require a team of DBAs in order to scale. They constantly struggle with limitations of hard drives and end up with very expensive solutions (SANs or large RAIDs, frequent maintenance windows for defragging and repartitioning, etc.) The actual annual cost of maintaining such databases is in $100K-$1M range which is too steep for me :) Finally, we got several companies like Intel, Samsung, FusionIO, etc. that just started selling extremely fast yet affordable SSD hard drives based on SLC Flash technology. These drives are 100 times faster in random read/writes than the best spinning hard drives on the market (up to 50,000 random writes per second). Their seek time is pretty much zero, so the cost of random I/O is the same as sequential I/O, which is awesome for databases. These SSD drives cost around $10-$20 per gigabyte, and they are relatively small (64GB). So, there seems to be an opportunity to avoid the HUGE costs of scaling databases the traditional way by simply building a big enough RAID 5 array of SSD drives (which would cost only a few thousand dollars). Then we don't care if the database file is fragmented, and we can afford 100 times more disk writes per second without having to spread the database across 100 spindles. . Is anybody else interested in this? I've been testing a few SSD drives and can share my results. If anybody on this site has already solved their I/O bottleneck with SSDs, I would love to hear your war stories! PS. I know that there are plenty of expensive solutions out there that help with scalability, for example the time proven RAM-based SANs. I want to be clear that even $50K is too expensive for my project. I have to find a solution that costs no more than $10K and does not take much time to implement.

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• Replacing DropBox with: Amazon S3 + SSL + GPG/TrueCrypt + Mounting on OSX ??

  - by Matt Rogish

  So, right now we're using DropBox to share various data files around between approximately 10 Mac OS X systems. However, we already have an S3 account and everyone on the lowest DropBox plan of $10/mo seems too expensive. So, I am contemplating something that would allow us to replace DropBox with our own home-grown solution. We are all fairly technical people and/or smart enough to follow some steps, so if it's not as "user friendly" as DropBox we're all comfortable with that. There are plenty of docs out there that have bits and pieces of what I want but some of the tools don't seem to fit the requirements: Transport security via SSL to the bucket Encryption of bucket contents Bi-directional syncing Most of the scripts I can find on the internet use "duplicity" which appears to fail #1 (it doesn't look like duplicity supports SSL to S3 - the docs don't state but the protocol looks plain old http http://www.nongnu.org/duplicity/duplicity.1.html#sect6 ) Many scripts use gpg to encrypt files. This seems like it could work, however I have to make sure that each OSX client is able to use the same key to encrypt and decrypt files (key management is left to me to manage). Finally, most of the scripts use one-way replication, e.g. using Amazon S3 as a simple backup store. As we'd be using Amazon S3 as the "repository" they fail this one. Whew. So, I'd love a single tool that does this but after an exhaustive search I don't think one exists. I'd be happy just knowing which tools out there can fulfill my 3 requirements, after that I can stitch together the rest. Any thoughts? THANKS!

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• Connecting multiple access points

  - by mohsen farahanipoor

  I'm working on a big project. We want to create a wireless network throughout the building with 15 floors. My idea is that we should set up one unified wireless access point at least in each floor...in case of signal attenuate, we use Access point extender/repeater. I selected DWL-6600AP from among D-Link industrial access points. I want to implement a single wireless LAN throughout the building. Is it possible to combines multiple DWL-6600 access points to achieving just a single WLAN? Can a wireless switch controller do this task? Can these Access Points interfere with each other? What is the solution? I read D-Link website's learning materials, but I am still confused. My other question is around the connecting these APs to Wireless Switch Controller - Is it possible to use power line for connecting DWL-6600 to Wireless Switch Controller device? My main goal is that clients with portable devices such as laptops should be easily connected to the network to share & have communication without any more manual configuration as they are already connected to a single network.

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• Prevent Amazon EC2 Time zone from reverting back on yum update

  - by D.Tate

  I use an Amazon EC2 server instance that runs a distro called Amazon Linux AMI. (I've read that it is based on CentOS/Red Hat). My specific version is the 2012.09 release. Anyway, I was able to change the time zone about a week ago from the default UTC to America/New_York (which is EST/EDT). The command I used to change it was: ln -sf /usr/share/zoneinfo/America/New_York /etc/localtime ...thanks to this other Server Fault question. At that point, I was able to run date from the the command line, and it correctly displayed the EDT time. And even after EDT "fell back" to EST this past Sunday, I was pleased to find that running date still produced the correct local time. So that was great. However, after running a yum update yesterday, it seems that my time zone got reverted back to plain 'ol UTC. I even checked the last modified time of /etc/localtime file, and indeed it confirmed that it had been modified around the same time I had updated. Is there any way to prevent this from happening again, or will I be stuck resetting the time zone every time I do a yum update?

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• Guide To Setting Accessing PhpMyAdmin On NGINX, Ubuntu 11.04, EC2 Remote MySQL Instance

  - by darkAsPitch

  I have setup a domain name to run on amazon ec2 running ubuntu 11.04, nginx and php5-fpm. The domain name works great, I have setup it's own sites-available configuration file and sym-linked it to sites-enabled. I installed phpmyadmin via sudo apt-get install phpmyadmin and followed the instructions. I then added this just above my /etc/nginx/nginx.conf file and restarted nginx. server { listen 80; server_name phpmyadmin.domain.com; location / { root /usr/share/phpmyadmin; index index.php; } #make sure all php files are processed by fast_cgi location ~ \.php { # try_files $uri =404; fastcgi_index index.php; fastcgi_pass 127.0.0.1:9000; include fastcgi_params; fastcgi_split_path_info ^(.+\.php)(/.+)$; fastcgi_param PATH_INFO $fastcgi_path_info; fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; } } I have also added the appropriate dns A records for phpmyadmin.domain.com phpmyadmin.domain.com just shows a 404 error code. All other subdomains do not respond at all so at least something is working here. FYI I have edited the /etc/phpmyadmin/config.inc.php file so that I can connect to a remote MySQL Database. What else do I need to do?

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• Problems installing Windows service via Group Policy in a domain

  - by CraneStyle

  I'm reasonably new to Group Policy administration and I'm trying to deploy an MSI installer via Active Directory to install a service. In reality, I'm a software developer trying to test how my service will be installed in a domain environment. My test environment: Server 2003 Domain Controller About 10 machines (between XP SP3, and server 2008) all joined to my domain. No real other setup, or active directory configuration has been done apart from things like getting DNS right. I suspect that I may be missing a step in Group Policy that says I need to grant an explicit permission somewhere, but I have no idea where that might be or what it will say. What I've done: I followed the documentation from Microsoft in How to Deploy Software via Group Policy, so I believe all those steps are correct (I used the UNC path, verified NTFS permissions, I have verified the computers and users are members of groups that are assigned to receive the policy etc). If I deploy the software via the Computer Configuration, when I reboot the target machine I get the following: When the computer starts up it logs Event ID 108, and says "Failed to apply changes to software installation settings. Software changes could not be applied. A previous log entry with details should exist. The error was: An operations error occurred." There are no previous log entries to check, which is weird because if it ever actually tried to invoke the windows installer it should log any sort of failure of my application's installer. If I open a command prompt and manually run: msiexec /qb /i \\[host]\[share]\installer.msi It installs the service just fine. If I deploy the software via the User Configuration, when I log that user in the Event Log says that software changes were applied successfully, but my service isn't installed. However, when deployed via the User configuration even though it's not installed when I go to Control Panel - Add/Remove Programs and click on Add New Programs my service installer is being advertised and I can install/remove it from there. (this does not happen when it's assigned to computers) Hopefully that wall of text was enough information to get me going, thanks all for the help.

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• Understanding Authorized Access to your Google Account

  - by firebush

  I'm having trouble understanding what I'm am granting to sites when they have "Authorized Access to my Google Account." This is how I see what has authorized access: Log into gmail. Click on the link that is my name in the upper-right corner, and from the drop-down select Account. From the list of links to the left, select Security. Click on Edit next to Authorized applications and sites. Authenticate again. At the top of the page, I see a set of sites that have authorized access to my account in various ways. I'm having trouble finding out information about what is being told to me here. There's no "help" link anywhere on the page and my Google searches are coming up unproductive. From the looks of what I see there, Google has access to my Google calendar. I feel comfortable about that, I think. But other sites have authorization to "Sign in using your Google account". My question is, what exactly does that authorization mean? What do the sites that have authorization to "Sign in using my Google account" have the power to do? I hope that this simply means that they authorize using the same criterion that gmail does. I assume that this doesn't grant them the ability to access my email. Can someone please calm my paranoia by describing (or simply pointing me to a site that describes) what these terms mean exactly? Also, if you have any thoughts about the safety of this feature, please share. Thanks!

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• Want to install GDB on Fedora 7 machine..

  - by RBA

  Hi, I want to install GDB GNU debugger for debugging C Programs, onto my fedora machine.. I installed the gzip file from gnu website, but it gives error during MAKE command.. I am doing all the steps correctly which reading from the readme file, and tutorial on internet. Please guide. Also i am trying to do from yum install gdb command and sudo apt-get install gdb, yum is not found in my system, i installed it, but now it is giving some unusual error, some file missing.. So no success with this.. sudo apt-get is working, but it is also giving some following errorss... [oracle@localhost Programs]$ sudo apt-get install gdb Password: Sorry, try again. Password: Sorry, try again. Password: oracle is not in the sudoers file. This incident will be reported. [oracle@localhost Programs]$ sudo apt-get install gdb I am in real nead of this gdb tool.. how to go about it.. Please share your experiences over this.. Thankx..

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• Self-connecting printers

  - by Martin Cerny

  Hello, I work as an administrator in a small company using XP Professional on all computers and two servers with Win 2003 Server. Recently a very unusual problam occured one of the computers keeps connecting to all the printers on the network it doesn't matter if it's an administrator or Domain User as soon as somebody logs in the commputer connects all the printers. The printers are either installed on local computers or on the server and shared. There is no log-on script connecting the printers, I install them manualy and none of the other computers shows such behaviour. We have a printer which is installed on two computers and both of them share it (I'm moving it to Server from a small PC which shared it up to now, but some computers still use the old connection), meaning this specific computer connects to one of the printer two times and it can't use either of the connections. How to prevent this self-connecting to all printers (none of the other computers has this problem). If I delte them from the "Printers" folder everything works fine untill I reconnect and the Folder is once again full of all the printers we have. I solved the smaller problem, computer is now capable of printing on all of the printers (it seems there have been some registry issues), after cleaning the registry and reinstalling the printer it seems to work just fine. But the second thing prevails, the computer connects to all the printers in the network (when I remove one/multiple it is reconnected right after the next log-in by any user).

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• Reliable custom Windows shortcut keys?

  - by Peter Baer

  I have global Windows shortcut keys assigned to several different cmd.exe instances. I do this by creating shortcuts to cmd.exe on my desktop, and assigning each one a unique shortcut key (for example, CTRL + SHIFT + U). Pretty basic stuff. I'm using Win2K8 (R1 and R2). This works just fine... most of the time. But with infuriating regularity, sometimes it doesn't. Or it will work with a long delay (many seconds). It doesn't matter what app currently has focus (it can even be one of the command prompts). It doesn't matter what keys I assign (I've tried a few variations of WIN, CTRL and SHIFT). I did notice that this is often, but not always, correlated with explorer.exe struggling in some way or another (say, an explorer window opened to a file share that's unavailable, or an app being unresponsive, or whatever). In other words the shortcut key handling appears to be very sensitive to unrelated system activity. Note that whenever I have this problem I can always successfully ALT + TAB to the window I want to get to, but that's tedious. I use the shortcuts to these command windows hundreds of times a day so even a 1% failure rate becomes really annoying. Is there a way to fix this, or is there some third-party utility out there that will RELIABLY intercept custom key combinations to bring focus to whatever apps I want, in a way that is independent of other system activity? ADDENDUM: There is a property of the Windows shortcuts that I would not want to lose if switching to a third-party hotkey tool: Windows shortcuts are idempotent. Once you've launched a shortcut to some app, pressing the shortcut key combo again takes you to the already launched process - it does not launch a new process.

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• nginx phpmyadmin 404

  - by borannb

  I am trying to install phpmyadmin on my nginx web server. I installed phpmyadmin without a problem. I created subdomain for it. For security reasons I didnt call my subdomain "phpmyadmin" i used a different name. Then I used this config for my subdomain server { listen 80; server_name myphpmyadminsubdomain.domain.com; access_log off; error_log /srv/www/myphpmyadminsubdomain/error.log; location / { root /usr/share/phpmyadmin; index index.php; } location ~ \.php$ { try_files $uri =404; fastcgi_split_path_info ^(.+\.php)(/.+)$; include fastcgi_params; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; # fastcgi_intercept_errors on; fastcgi_pass php; } location = /favicon.ico { log_not_found off; access_log off; } location = /robots.txt { allow all; log_not_found off; access_log off; } location ~ /\. { deny all; access_log off; log_not_found off; } } Then I enabled it like this; /etc/nginx/sites-available/myphpmyadminsubdomain /etc/nginx/sites-enabled/myphpmyadminsubdomain I have restarted the nginx and go to myphpmyadminsubdomain.domain.com and it is giving me nginx 404 Not Found error. what am I doing wrong?

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• batch copy files with error log on missing permissions

  - by sc911

  Hi *, I'm searching for a tool to batch-copy files, that should support the following points: copy files from a net-share report any errors show errors only or filter log on errors don't stop on an error also report if a file or a folder could not be copied due to missing permissions if possible it should have a queue where new job can be added while copying I tried the following tools: TerraCopy: takes a lot time to just calculate the time and the size of the job and does not report errors due to missing permissions (it doesn't even add those files to the copy-queue) Karne's replicator: does not report errors due to missing permissions xcopy: does a great job when using the right parameters and piping the output to a file (in the German localization xcopy /k /r /e /i /s /c /h SOURCE TARGET>LOGFILE 2>&1 will do the job. opening the logfile in IE will give you a great monitor). but quing jobs it not possible (ok, you can join them all in a batch-file, but you can not queue jobs while another one is running (hm, thinking of a batch-script that loops through a file with the source-target-config...)) to be continued Which tools do you use? Tell me! Thx sc911

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• Mac Mavericks, ngircd localhost works, private IP doesn't

  - by user221945

  I have configured ngircd to listen on my private ip address. It doesn't. Localhost works fine. Configuration test: ngIRCd 21-IDENT+IPv6+IRCPLUS+SSL+SYSLOG+TCPWRAP+ZLIB-x86_64/apple/darwin13.2.0 Copyright (c)2001-2013 Alexander Barton () and Contributors. Homepage: http://ngircd.barton.de/ This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Reading configuration from "/opt/local/etc/ngircd.conf" ... OK, press enter to see a dump of your server configuration ... [GLOBAL] Name = irc.bellbookandpistol.com AdminInfo1 = Jaedreth AdminInfo2 = San Diego County CA, US AdminEMail = [email protected] HelpFile = /opt/local/share/doc/ngircd/Commands.txt Info = Server Info Text Listen = 10.0.1.5,127.0.0.1 MotdFile = MotdPhrase = "Welcome to irc.bellbookandpistol.com" Password = PidFile = Ports = 6667 ServerGID = wheel ServerUID = root [LIMITS] ConnectRetry = 60 IdleTimeout = 0 MaxConnections = 0 MaxConnectionsIP = 6 MaxJoins = -1 MaxNickLength = 9 MaxListSize = 0 PingTimeout = 120 PongTimeout = 20 [OPTIONS] AllowedChannelTypes = #&+ AllowRemoteOper = no ChrootDir = CloakHost = CloakHostModeX = CloakHostSalt = kBih5mu\kVI!DC6eifT(hd4m/0'zb/=: CloakUserToNick = no ConnectIPv4 = yes ConnectIPv6 = no DefaultUserModes = DNS = yes IncludeDir = /opt/local/etc/ngircd.conf.d MorePrivacy = no NoticeAuth = no OperCanUseMode = no OperChanPAutoOp = yes OperServerMode = no RequireAuthPing = no ScrubCTCP = no SyslogFacility = local5 WebircPassword = [SSL] CertFile = CipherList = HIGH:!aNULL:@STRENGTH DHFile = KeyFile = KeyFilePassword = Ports = [OPERATOR] Name = [REDACTED] Password = [REDACTED] Mask = [CHANNEL] Name = #BBP Modes = tnk Key = MaxUsers = 0 Topic = Welcome to the Bell, Book and Pistol IRC Server! KeyFile = As you can see, it should be listening on 10.0.1.5, but it isn't. After turning on Apache manually, port 80 works on 10.0.1.5, but port 6667 doesn't. It only works on localhost. Is there some terminal command I could use or some config file I could edit to get this to work?

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• Vlan on DD-WRT v24 filesharing without internet

  - by user148888

  I'm planning to do a vlan with shared files without internet. my vlan is working correctly until I could lock the internet but I can not share files only I can ping from 172.168.1.x to 172.168.2.x but not backward. can u help me please?? This is my config. WRT54g DD-wrt v24 vlan0 eth 1,2,3 172.168.1.1/24 vlan1 Wan vlan2 eth 4 172.168.2.1/24(don't want internet here just Lan Conection) Pc (my pc) 172.168.1.10/24 gtway 172.168.1.1 (with internet) Ubiquity Nanostation loco M2 172.168.2.20/24(AP)(connect to eth 4 vlan2)(don't want internet here) Ubiquity Nanostation loco M2 172.168.2.21/24(Client)(don't want internet here) Friend pc 172.168.2.115/24(connected from the client)(don't want internet here) Any Help Please.. ![Lan Map][1] ![Vlan Config1][2] ![Vlan Config2][3] ![Vlan Config3][4] ![Command to block internet][5] [url=http://imageshack.us/photo/my-images/194/lanxl.jpg/][img=http://imageshack.us/a/img194/4197/lanxl.th.jpg][/url] [url=http://imageshack.us/photo/my-images/600/commandmf.jpg/][img=http://imageshack.us/a/img600/9530/commandmf.th.jpg][/url] [url=http://imageshack.us/photo/my-images/811/57398524.jpg/][img=http://imageshack.us/a/img811/1917/57398524.th.jpg][/url] [url=http://imageshack.us/photo/my-images/717/48064277.jpg/][img=http://imageshack.us/a/img717/829/48064277.th.jpg][/url] [url=http://imageshack.us/photo/my-images/685/21456517.jpg/][img=http://imageshack.us/a/img685/256/21456517.th.jpg][/url]

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• mount multiple folders with nfs4 on centos

  - by microchasm

  I'm trying to get nfs4 working here. Machine 1 (server) I have a folder and in it 2 other folders I'm trying to share independently. /shared/folder1 /shared/folder2 Problem is, I can't seem to figure out how to mount the folders independently on the client. (Machine 1 - server) /etc/exports: /var/shared/folder1 192.168.200.101(rw,fsid=0,sync) /var/shared/folder2 192.168.200.101(rw,fsid=0,sync) ... exportfs -ra (Machine 2 - client) /etc/fstab: 192.168.200.201:/folder1/ /home/nfsmnt/folder1 nfs4 rw 0 0 ... mount /home/nfsmnt/folder1 mount.nfs4: 192.168.200.201:/folder1/ failed, reason given by server: No such file or directory The folder is there. I'm positive. I think there is something simple I'm missing, but I'm totally missing it. It seems like there should be a way in fstab to tell nfs which folder on the server I want to mount. But I can only find references to what looks like a root mount point (e.g. 192.168.1.1:/) which I assume is handled by exports on the server. But even with the folders set up in exports, there doesn't seem to be an apparent way to pich and choose which gets mounted. Is it not possible to mount separate folders from the same server to different mount points on the client? Any help appreciated.

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• Best NIC config when virtual servers need iSCSI storage?

  - by icky2000

  I have a Windows 2008 server running Hyper-V. There are 6 NICs on the server configured like this: NIC01 & NIC02: teamed administrative interface (RDP, mgmt, etc) NIC03: connected to iSCSI VLAN #1 NIC04: connected to iSCSI VLAN #2 NIC05: dedicated to one virtual switch for VMs NIC06: dedicated to another virtual switch for VMs The iSCSI NICs are used obviously for storage to host the VMs. I put half the VMs on the host on the switch assigned to NIC05 and the other half on the switch assigned to NIC06. We have multiple production networks that the VMs could appear on so the switch ports that NIC05 & NIC06 are connected to are trunked and we then tag the NIC on the VM for the appropriate VLAN. No clustering on this host. Now I wish to assign some iSCSI storage direct to a VM. As I see it I have 2 options: Add the iSCSI VLANs to the trunked ports (NIC05 and NIC06), add two NICs to the VM that needs iSCSI storage, and tag them for the iSCSI VLANs Create two additional virtual switches on the host. Assign one to NIC03 and one to NIC04. Add two NICs to the VM that needs iSCSI storage and let them share that path to the SAN with the host. I'm wondering about how much overhead the VLAN tagging in Hyper-V has and haven't seen any discussion about that. I'm also a bit concerned that something funky on the iSCSI-connected VM could saturate the iSCSI NICs or cause some other problem that could threaten storage access for the entire host which would be bad. Any thoughts or suggestions? How do you configure your hosts when VMs connect direct to iSCSI?

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• Hyper-V: Dedicated NIC for Guests VMs

  - by TheLizardKing

  I have two NIC cards and created a private virtual network for my virtual machines and unchecked "Allow management operating system to share this network adapter" which basically turns my Guest NIC into this sorta shell of a NIC card on the host machine and the only thing checked in it's properties is "Microsoft Virtual Network Switch Protocol" which I am fine with. Everything works and everything is connected. My issue is that for some reason my guest (Ubuntu Server with legacy network drivers) is not talking properly to my DHCP server. Specifically my DHCP server reserves the guest's IP address using it's MAC address but the guest isn't picking it up. It's picking up any old IP it can get and I can't even ping the hostname from another PC on the network but it pings fine if I use the IP. I see the guest showing up in my DHCP table but I can't get the reservation to stick. Is there some reason it's only partially communicating with my DHCP server? Pinging it's hostname on itself reveals it's using 127.0.0.1 instead of it's network IP. Is this an issue with the legacy drivers used in Hyper-V?

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• Broad Band LAN connection through existing 6 wire phone line ( no phone connected )

  - by Paul Taylor

  I have an (up to but never achieved ) 10 mb broadband signal coming into my house along the telephone line. The modem then connects the broadband signal via a LAN connection and Wi-Fi signal to my computers and iPad. My workshop desk is 54 yards (approx. 50m) downhill from the modem (part of a separate building) – too far to give a good direct signal. The inside corner of the workshop (by a window) receives a weak signal. I have a disconnected telephone cable consisting of 6 wires going from the house to the workshop. The telephone is no longer used in the workshop - we use our mobile number for business calls. A broad band signal using the cable would not have to share with a phone. What would be the most economic price/efficient way to get the broadband signal to the workshop? I am writing in hope that since the telephone didn't need the six wires, an Ethernet connection might be similar and not need all the eight wires for a LAN connection. In theory could use the telephone wire to pull an Ethernet cable trough the underground pipe but I doubt if the cable would survive the strain. The broad band connection in the workshop does not have to have network facility. My skill level is high enough to do house wiring, plumbing and gas fitting; so given any sound advice and a wiring diagram or instructions I can probably work out the rest myself.

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• IPv6 Addresses causing Exchange Relay whitelists to fail

  - by makerofthings7

  Several of our new Exchange servers are failing to relay messages because it is communicating over IPv6 and not matching any receive connector I previously set up. I'm not sure how we are using IP6 since we only have a IPv4 network and we are routing across subnets. I discovered this by typing helo in from the source to the server that is confused by my IP6 address. I saw the IPv6 message and the custom message I gave this receive connector. (connectors with more permission have a different helo) 220 HUB01 client helo asdf 250 HUB01.nfp.com Hello [fe80::cd8:6087:7b1e:99d4%11] More info about my environment: I have two dedicated Exchange forests each with a distinct purpose. They have no trust and only communicate by SMTP. They both share the same DNS infrastructure via stub zones. What are my options? This is my guess, but I'm no IPv6 expert so I don't know which one is the best option Disable IPv6 Add the IPv6 address to the whitelist (isn't that IP dynamic?) Tell Exchange to use IPv4 instead Figure out why we are using IPv6 instead of IP4

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• XenServer 5.5 running WHS.. trying to add local or network printer/scanner/copier

  - by ProstheticHead

  Hi guys. Just wondering if anyone has prior experience in sharing a multifunction printer across a (mostly windows) network? My situation at the minute is complicated.. I DID have the printer attached directly to a Windows Home Server box and was able to scan to a share and print across the network from my other computers. Compatibility problems have forced me to virtualize WHS on XenServer 5.5... This is actually quite useful because I can now run other things on the same box, but the problem is that now WHS doesn't get direct hardware access so it doesn't see a USB attached PSC... Grrrr! So now I have a choice to make. I've read somewhere that I can buy an add in PCI USB controller and somehow set up a passthrough to one VM at a time. To me, this sound complicated but if it's likely to work reliably I'd prefer this method. I've read about another approach, which I'm not sure about either, but I guess sounds plausible. A Network USB server, (NOT a print server) that can somehow make a USB port accessible across a network. My worry here is that it likely needs some kind of 3rd party software to work.. so not ideal. If there are any other methods you can suggest I'd be happy to hear them... I need your help guys. I'm also in the market for a PCI express SATA controller, nothing flashy, just need up to 8 ports, JBOD and 100% compatability.. Any suggestions? Regards Kevin

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