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• Still prompted for a password after adding SSH public key to a server

  - by Nathan Arthur

  I'm attempting to setup a git repository on my Dreamhost web server by following the "Setup: For the Impatient" instructions here. I'm having difficulty setting up public key access to the server. After successfully creating my public key, I ran the following command: cat ~/.ssh/[MY KEY].pub | ssh [USER]@[MACHINE] "mkdir ~/.ssh; cat >> ~/.ssh/authorized_keys" ...replacing the appropriate placeholders with the correct values. Everything seemed to go through fine. The server asked for my password, and, as far as I can tell, executed the command. There is indeed a ~/.ssh/authorized_keys file on the server. The problem: When I try to SSH into the server, it still asks for my password. My understanding is that it shouldn't be asking for my password anymore. What am I missing? EDIT: SSH -v Log: Macbook:~ michaeleckert$ ssh -v [USER]@[SERVER URL] OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug1: /etc/ssh_config line 53: Applying options for * debug1: Connecting to [SERVER URL] [[SERVER IP]] port 22. debug1: Connection established. debug1: identity file /Users/michaeleckert/.ssh/id_rsa type -1 debug1: identity file /Users/michaeleckert/.ssh/id_rsa-cert type -1 debug1: identity file /Users/michaeleckert/.ssh/id_dsa type -1 debug1: identity file /Users/michaeleckert/.ssh/id_dsa-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.2 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.5p1 Debian-6+squeeze3 debug1: match: OpenSSH_5.5p1 Debian-6+squeeze3 pat OpenSSH_5* debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: RSA [STRING OF NUMBERS AND LETTERS SEPARATED BY SEMI-COLONS] debug1: Host ‘[SERVER URL]' is known and matches the RSA host key. debug1: Found key in /Users/michaeleckert/.ssh/known_hosts:2 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Trying private key: /Users/michaeleckert/.ssh/id_rsa debug1: Trying private key: /Users/michaeleckert/.ssh/id_dsa debug1: Next authentication method: password [USER]@[SERVER URL]'s password: debug1: Authentication succeeded (password). Authenticated to [SERVER URL] ([[SERVER IP]]:22). debug1: channel 0: new [client-session] debug1: Requesting [email protected] debug1: Entering interactive session. debug1: Sending environment. debug1: Sending env LANG = en_US.UTF-8 Welcome to [SERVER URL] Any malicious and/or unauthorized activity is strictly forbidden. All activity may be logged by DreamHost Web Hosting. Last login: Sun Nov 3 12:04:21 2013 from [MY IP] [[SERVER NAME]]$

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• Why are my scene's depth values not being written to my DepthStencilView?

  - by dotminic

  I'm rendering to a depth map in order to use it as a shader resource view, but when I sample the depth map in my shader, the red component has a value of 1 while all other channels have a value of 0. The Texture2D I use to create the DepthStencilView is bound with the D3D11_BIND_DEPTH_STENCIL | D3D11_BIND_SHADER_RESOURCE flags, the DepthStencilView has the DXGI_FORMAT_D32_FLOAT format, and the ShaderResourceView's format is D3D11_SRV_DIMENSION_TEXTURE2D. I'm setting the depth map render target, then i'm drawing my scene, and once that is done, I'm the back buffer render target and depth stencil are set on the output merger, and I'm using the depth map shader resource view as a texture in my shader, but the depth value in the red channel is constantly 1. I'm not getting any runtime errors from D3D, and no compile time warning or anything. I'm not sure what I'm missing here at all. I have the impression the depth value is always being set to 1. I have not set any depth/stencil states, and AFAICT depth writing is enabled by default. The geometry is being rendered correctly so I'm pretty sure depth writing is enabled. The device is created with the appropriate debug flags; #if defined(DEBUG) || defined(_DEBUG) deviceFlags |= D3D11_CREATE_DEVICE_DEBUG | D3D11_RLDO_DETAIL; #endif This is how I create my depth map. I've omitted error checking for the sake of brevity D3D11_TEXTURE2D_DESC td; td.Width = width; td.Height = height; td.MipLevels = 1; td.ArraySize = 1; td.Format = DXGI_FORMAT_R32_TYPELESS; td.SampleDesc.Count = 1; td.SampleDesc.Quality = 0; td.Usage = D3D11_USAGE_DEFAULT; td.BindFlags = D3D11_BIND_DEPTH_STENCIL | D3D11_BIND_SHADER_RESOURCE; td.CPUAccessFlags = 0; td.MiscFlags = 0; _device->CreateTexture2D(&texDesc, 0, &this->_depthMap); D3D11_DEPTH_STENCIL_VIEW_DESC dsvd; ZeroMemory(&dsvd, sizeof(dsvd)); dsvd.Format = DXGI_FORMAT_D32_FLOAT; dsvd.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D; dsvd.Texture2D.MipSlice = 0; _device->CreateDepthStencilView(this->_depthMap, &dsvd, &this->_dmapDSV); D3D11_SHADER_RESOURCE_VIEW_DESC srvd; srvd.Format = DXGI_FORMAT_R32_FLOAT; srvd.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D; srvd.Texture2D.MipLevels = texDesc.MipLevels; srvd.Texture2D.MostDetailedMip = 0; _device->CreateShaderResourceView(this->_depthMap, &srvd, &this->_dmapSRV);

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• JavaOne 2013: (Key) Notes of a conference – State of the Java platform and all the roadmaps by Amis

  - by JuergenKress

  Last week’s JavaOne conference provided insights in the roadmap of the Java platform as well as in the current state of things in the Java community. The close relationship between Oracle and IBM concerning Java, the (continuing) lack of such a relationship with Google, the support from Microsoft for Java applications on its Azure cloud and the vibrant developer community – with over 200 different Java User Groups in many countries of the world. There were no major surprises or stunning announcements. Java EE 7 (release in June) was celebrated, the progress of Java 8 SE explained as well as the progress on Java Embedded and ME. The availability of NetBeans 7.4 RC1 and JDK 8 Early Adopters release as well as the open sourcing of project Avatar probably were the only real news stories. The convergence of JavaFX and Java SE is almost complete; the upcoming alignment of Java SE Embedded and Java ME is the next big consolidation step that will lead to a unified platform where developers can use the same skills, development tools and APIs on EE, SE, SE Embedded and ME development. This means that anything that runs on ME will run on SE (Embedded) and EE – not necessarily the reverse because not all SE APIs are part of the compact profile or the ME environment. However, the trimming down of the SE libraries and the increased capabilities of devices mean that a pretty rich JVM runs on many devices – such as JavaFX 8 on the Raspberry PI. The major theme of the conference was Internet of Things. A world of things that are smart and connected, devices like sensors, cameras and equipment from cars, fridges and television sets to printers, security gates and kiosks that all run Java and are all capable of sending data over local network connections or directly over the internet. The number of devices that has these capabilities is rapidly growing. This means that the number of places where Java programs can help program the behavior of devices is growing too. It also means that the volume of data generated is expanding and that we have to find ways to harvest that data, possibly do a local pre-processing (filter, aggregate) and channel the data to back end systems. Terms typically used are edge devices (small, simple, publishing data), gateways (receiving data from many devices, collecting and consolidating, pre-processing, sending onwards to back end – typically using real time event processing) and enterprise services – receiving the data-turned-information from the gateways to further consolidate, distribute and act upon. A cheap device like the Raspberry PI is a perfect way to get started as a Java developer with what embedded (device) programming means and how interaction with physical input and output takes place. Roadmaps The over all progress on Java is visualized in this overview: Read the full article here. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: Amis,OOW,Oracle OpenWorld,JavaOne,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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• PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/json.so' undefined symbol: ZVAL_DELREF

  - by crmpicco

  I have an issue where I am unable to use JSON, which would appear to be because of the following error. There is another thread on this forum this touches on a similar issue, but it's not quite the same. I am using CentOS 5.6 and have the following pear packages installed: [crmpicco@eq-www-php53 ~]$ pear list PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/json.so' - /usr/lib64/php/modules/json.so: undefined symbol: ZVAL_DELREF in Unknown on line 0 Installed packages, channel pear.php.net: ========================================= Package Version State Archive_Tar 1.3.7 stable Auth_SASL 1.0.2 stable Console_Getopt 1.3.1 stable Image_Barcode 1.1.2 stable Mail 1.1.14 stable Net_SMTP 1.2.10 stable Net_Socket 1.0.8 stable PEAR 1.9.4 stable Structures_Graph 1.0.4 stable XML_RPC 1.5.4 stable XML_Util 1.2.1 stable json 1.2.1 stable and have the following PHP packages installed: [crmpicco@eq-www-php53 ~]$ yum list installed | grep php php.x86_64 5.3.10-1.w5 installed php-cli.x86_64 5.3.10-1.w5 installed php-common.x86_64 5.3.10-1.w5 installed php-devel.x86_64 5.3.10-1.w5 installed php-gd.x86_64 5.3.10-1.w5 installed php-ldap.x86_64 5.3.10-1.w5 installed php-mcrypt.x86_64 5.3.10-1.w5 installed php-mysql.x86_64 5.3.10-1.w5 installed php-pdo.x86_64 5.3.10-1.w5 installed php-pear.noarch 1:1.9.4-1.w5 installed php-pear-Net-Socket.noarch 1.0.8-1.el5.centos installed php-soap.x86_64 5.3.10-1.w5 installed php-xml.x86_64 5.3.10-1.w5 installed The error: [crmpicco@eq-www-php53 ~]$ php -v PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/json.so' - /usr/lib64/php/modules/json.so: undefined symbol: ZVAL_DELREF in Unknown on line 0 PHP 5.3.10 (cli) (built: Feb 2 2012 23:23:12) Copyright (c) 1997-2012 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies My repolist reads as: [crmpicco@eq-www-php53 ~]$ yum repolist Loaded plugins: changelog, fastestmirror Excluding Packages in global exclude list Finished repo id repo name status base CentOS-5 - Base 3,548+43 epel Extra Packages for Enterprise Linux 5 - x86_64 6,815+156 extras CentOS-5 - Extras 245+23 rpmforge Red Hat Enterprise 5 - RPMforge.net - dag 11,016+67 updates CentOS-5 - Updates 233 webtatic Webtatic Repository 5 - x86_64 211+183 repolist: 22,068 I am getting HTTP 500 errors everywhere that I use JSON so my application is non functional right now.

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• ssh + tinyproxy: poor performance

  - by Paul

  I am currently in China and I would like to still visit some blocked websites (facebook, youtube). I have VPS in the USA and I have installed tinyproxy on it. I log in on my VPS with SSH port-forwarding and I have configured my browser appropriately. Everything works more or less: I can surf to those websites but everything is inusually slow and sometimes data transfer stops abruptly. This probably has to do with the fact that I see some errors in my shell on the VPS like : channel 6: open failed: connect failed: Also in the log-file of tinyproxy I see some bad things: ERROR Sep 06 14:52:14 [28150]: getpeer_information: getpeername() error: Transport endpoint is not connected ERROR Sep 06 14:52:15 [28153]: writebuff: write() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:15 [28168]: readbuff: recv() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:15 [28151]: readbuff: recv() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:15 [28143]: readbuff: recv() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:17 [28147]: writebuff: write() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:23 [28137]: writebuff: write() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:26 [28168]: getpeer_information: getpeername() error: Transport endpoint is not connected ERROR Sep 06 14:52:27 [28186]: read_request_line: Client (file descriptor: 7) closed socket before read. ERROR Sep 06 14:52:31 [28160]: getpeer_information: getpeername() error: Transport endpoint is not connected

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• BIOS interrupts, privilege levels and paging

  - by Jack

  Hi, I was learning about Intel 8086-80486 CPUs and their interactions with HW. But I still don´t understand it quite well. Please, help me fill blank spots. First, I know that CPU communicates with HW using BIOS interrupts. But, what really happens in PC, when I call some INT instruction? I know that according the interrupt table some instructions begin to execute, but how by executing some instructions can BIOS recognize what I want to do? Becouse as far as I know, CPU has no extra communication channel with BIOS, it can only adress memory and receive data. So how can I instruct BIOS to do something, when I can only address RAM? Next thing I don't understand is about privilege levels. I know about ring model, and access rights, but how does the CPU know which privilege level has executed an instruction? I think that these privileges apply only when intruction is trying to address memory, but how does an application get its privilege level? I mean I know its level 3, but how is it set? And last thing, I know that paging is address scheme that is used to support aplication-transparent virtual memory, or swapping, but I could not find any information about how paging is tied with protected mode. Like if paging is like next mode independent of protected mode, or its somehow implemented within protected mode. And if it is implemented in protected mode, isn´t it too slow, to first address application space, then offset, and then paging folder, page and offset once again?

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• Connecting Adium to Google Talk with a 2-factor authentication account isn’t working

  - by Robin

  Anyone else having this problem? After turning on 2-factor authentication on my Google Account I stopped being able to log in through Adium (Mac IM client that uses Pidgin’s libpurple for IM). Obviously you need to generate an application-specific password but these won’t let me log in. Application specific passwords work with other applications (e.g. Reeder for feeds and calendering on my phone). Google specifically mention Adium in their examples of setting up an application password for Google Talk so I doubt it’s a generic Adium problem. I can still access Google Talk for this account if I use a talk widget on a Google Website (Plus, or iGoogle for example). My bug report to Adium including a connection log file is up on their Trac: http://trac.adium.im/ticket/15310 . No activity there though. I also asked around in their IRC channel but no-one else could replicate the problem. If I had to guess then I’d think it was a consequence of me not having a GMail account associated with my Google account. I don’t see exactly why that would cause it, but it seems like a fairly unusual setup that might not have been tested for.

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• blu-ray archiving in vmware ESXi 4

  - by spacecadet77

  Hi, I need some advice about using blu-ray writer for archiving data on vmware ESXi 4. At office we have IBM System x3400 Tower server with ESXi 4 hipervisor and OpenSuse and CentOS GNU/Linux system as guests. Will blu-ray writer work in this setup, and if it will is there any particular model you can suggest. Best regards IBM System x3400 Tower server specification: 1x Intel Quad-Core Xeon E5410 2.33GHz/ 12MB/ 1333MHz (2x CPU max) Intel 5000P chipset, 2x 1GB PC2-5300 DDR2 667MHz SDRAM ECC Chipkill (32GB max) 2x4GB (2x2GB) PC2-5300 CL5 ECC DDR2 FBDIMM (x3400, x3550, x3650) SAS/SATA Hot-Swap Open Bay (0xHDD std, 4xHDD max, 8xHDD optional) ServeRAID 8K dual channel SAS/SATA controller (RAID 0,1,1E,10,5,6, 256MB, Battery Backup) Graphics ATI® RN50(ES1000) 16MB DDR, CD-RW/DVD Combo no FDD GigaEthernet, Tower with Power Supply 835W (opt Redudant) Slot 1: half-length, PCI-Express x8(x4 electrical) Slot 2: full, PCI-Express x8 Slot 3: full, PCI-Express x8 Slot 4: full, 64-bit 133MHz 3.3v PCI-X Slot 5: full, 64-bit 133MHz 3.3v PCI-X , Slot 6: half-length, 32-bit 33MHz 5.0v PCI ports: 4x USB (Vers 2.0), 2x PS/2, parallel, 2x serial (9-pin), VGA, RJ-45 (ethernet ), RJ-45 (sys mgm) HDD 4 x TB 7200rpm / Serial ATA II 3.0Gb/s / 16MB, RoHS

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• BIOS interrupts, priviledge levels and paging

  - by Jack

  Hi, I was learning about Intel 8086-80486 CPUs and their interactions with HW. But I still don´t understand it quite well. Please, help me fill blank spots. First, I know that CPU communicates with HW using BIOS interrupts. But, what really happens in PC, when I call some INT instruction? I know that according the interrupt table some instructions begin to execute, but how by executing some instructions can BIOS recognize what I want to do? Becouse as far as I know, CPU has no extra communication channel with BIOS, it can only adress memory and receive data. So how can I instruct BIOS to do something, when I can only adress RAM? Next thing I dont understand is about priviledge levels. I know about ring model, and acess rights, but how CPU knows which priviledge level has executed instruction? I think that these priviledges apply only when intruction is trying to adress memory, but how applications gets its priviledge level? I mean I know its level 3, but how its set? And last thing, I know that paging is adress scheme that is used to support aplication-transparent virtual memory, or swaping, but I could not find any informations about how is paging tied with protected mode. Like if paging is like next mode independent of protectet mode, or its somehow implemented within protected mode. And if it is implemented in protected mode, isn´t it too slow, to first adress application space, than offset, and than paging folder, page and offset once again? Thank you for every response.

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• Ubuntu 9.10 RSA authentication: ssh fails, filezilla runs fine

  - by MariusPontmercy

  This is quite a mistery for me. I usually use passwordless RSA authentication to login into my remote *nix servers with ssh and sftp. Never had any problem until now. I cannot connect to an Ubuntu 9.10 machine: user@myclient$ ssh -i .ssh/Ganymede_key [email protected] [...] debug1: Host 'ganymede.server.com' is known and matches the RSA host key. debug1: Found key in /home/user/.ssh/known_hosts:14 debug2: bits set: 494/1024 debug1: ssh_rsa_verify: signature correct debug2: kex_derive_keys debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug2: set_newkeys: mode 0 debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: .ssh/Ganymede_key (0xb96a0ef8) debug2: key: .ssh/Ganymede_key ((nil)) debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Next authentication method: publickey debug1: Offering public key: .ssh/Ganymede_key debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Trying private key: .ssh/Ganymede_key debug1: read PEM private key done: type RSA debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,password,keyboard-interactive debug2: we did not send a packet, disable method debug1: Next authentication method: keyboard-interactive debug2: userauth_kbdint debug2: we sent a keyboard-interactive packet, wait for reply debug2: input_userauth_info_req debug2: input_userauth_info_req: num_prompts 1 Then it falls back to password authentication. If I disable password authentication on the remote machine my connection attempt just fails with a "Permission denied (publickey)." state. Same thing for sftp from command line. The "funny" thing is that the exact same RSA key works like a charm with a Filezilla sftp session instead: 12:08:00 Trace: Offered public key from "/home/user/.filezilla/keys/Ganymede_key" 12:08:00 Trace: Offer of public key accepted, trying to authenticate using it. 12:08:01 Trace: Access granted 12:08:01 Trace: Opened channel for session 12:08:01 Trace: Started a shell/command 12:08:01 Status: Connected to ganymede.server.com 12:08:02 Trace: CSftpControlSocket::ConnectParseResponse() 12:08:02 Trace: CSftpControlSocket::ResetOperation(0) 12:08:02 Trace: CControlSocket::ResetOperation(0) 12:08:02 Status: Retrieving directory listing... 12:08:02 Trace: CSftpControlSocket::SendNextCommand() 12:08:02 Trace: CSftpControlSocket::ChangeDirSend() 12:08:02 Command: pwd 12:08:02 Response: Current directory is: "/root" 12:08:02 Trace: CSftpControlSocket::ResetOperation(0) 12:08:02 Trace: CControlSocket::ResetOperation(0) 12:08:02 Trace: CSftpControlSocket::ParseSubcommandResult(0) 12:08:02 Trace: CSftpControlSocket::ListSubcommandResult() 12:08:02 Trace: CSftpControlSocket::ResetOperation(0) 12:08:02 Trace: CControlSocket::ResetOperation(0) 12:08:02 Status: Directory listing successful Any thoughts? M

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• Problems configuring an SSH tunnel to a Nexentastor appliance for use with headless Crashplan

  - by Rob Smallshire

  Problem I am attempting to configure an SSH tunnel to a NexentaStor appliance from either a Windows or Linux computer so that I can connect a Crashplan Desktop GUI to a headless Crashplan server running on the Nexenta box, according to these instructions on the Crashplan support site: Connect to a Headless CrashPlan Desktop. So far, I've failed to get a working SSH tunnel from from either either a Windows client (using Putty) or a Linux client (using command line SSH). I'm fairly sure the problem is at the receiving end with NexentaStor. A blog article - CrashPlan for Backup on Nexenta - indicates that it could be made to work only after "after enabling TCP forwarding in Nexenta in /etc/ssh/sshd_config" - although I'm not sure how to go about that or specifically what I need to do. Things I have tried Ensuring the Crashplan server on the Nexenta box is listening on port 4243 $ netstat -na | grep LISTEN | grep 42 127.0.0.1.4243 *.* 0 0 131072 0 LISTEN *.4242 *.* 0 0 65928 0 LISTEN Establishing a tunnel from a Linux host: $ ssh -L 4200:localhost:4243 admin:10.0.0.56 and then, from another terminal on the Linux host, using telnet to verify the tunnel: $ telnet localhost 4200 Trying ::1... Connected to localhost. Escape character is #^]'. with nothing more, although the Crashplan server should respond with something. From Windows, using PuTTY have followed the instructions on the Crashplan support site to establish an equivalent tunnel, but then telnet on Windows gives me no response at all and the Crashplan GUI can't connect either. The PuTTY log for the tunnelled connection shows reasonable output: ... 2011-11-18 21:09:57 Opened channel for session 2011-11-18 21:09:57 Local port 4200 forwarding to localhost:4243 2011-11-18 21:09:57 Allocated pty (ospeed 38400bps, ispeed 38400bps) 2011-11-18 21:09:57 Started a shell/command 2011-11-18 21:10:09 Opening forwarded connection to localhost:4243 but the telnet localhost 4200 command from Windows does nothing at all - it just waits with a blank terminal. On the NexentaStor server I've examined the /etc/ssh/sshd_config file and everything seems 'normal' - and I've commented out the ListenAddress entries to ensure that I'm listening on all interfaces. How can I establish a tunnel, and how can I verify that it is working?

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• How do I make my internal dns forward requests to a given server

  - by ankimal

  We have a DNS server internally that looks up IP addresses for all internal hosts and connects to root dns servers for all other domains (the rest of the internet). Here is my config options { listen-on port 53 { 127.0.0.1;any; }; listen-on-v6 port 53 { ::1; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; allow-query {192.168.1.0/24; 127.0.0.1; }; recursion yes; }; logging { channel default_debug { file "data/named.run"; severity dynamic; }; }; view “internal” { // What the home network will see match-clients { 127.0.0.1;any; }; match-destinations { 127.0.0.1;any; }; recursion yes; zone "." IN { type hint; file "named.ca"; }; include "internal_zones.conf"; }; We need to tweak this to go to our ISPs dns, x.y.z.w instead of the root dns servers if the host cannot be resolved internally. Config: Fedora 10/Bind 9.5.2

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• Any Recommendations for a Web Based Large File Transfer System?

  - by Glen Richards

  I'm looking for a server software product that: Allows my users to share large files with: The general public securely to 1 or more people (notification via email, optionally with a token that gives them x period of time to download) Allows anyone in the general public to share files with my users. Perhaps by invitation. Has to be user friendly enough to allow my users to use this with out having to bug me as the admin. It needs to be a system that we can install on our own server (we don't want shared data sitting on anyone else's server) A web based solution. Using some kind or secure comms channel would be good too, eg, ssh Files to share could be over 1 GB. I found the question below. WebDav does not sound user friendly enough: http://serverfault.com/questions/86878/recommendations-for-a-secure-and-simple-dropbox-system I've done a lot of searching, but I can't get the search terms right. There are too many services that provide this, but I want something we can install on our own server. A last resort would be to roll my own. Any ideas appreciated. Glen EDIT Sorry Tom and Jeff but Glen specifically says that he's looking for a 'product' so given that I specialise in this field thought that my expertise in this area may have been of use to him. I don't see how him writing services is going to be easy for him to maintain going forward (large IT admin overhead) or simple for his users and the general public to work with.

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• Strange performance issue with Dell R7610 and LSI 2208 RAID controller

  - by GregC

  Connecting controller to any of the three PCIe x16 slots yield choppy read performance around 750 MB/sec Lowly PCIe x4 slot yields steady 1.2 GB/sec read Given same files, same Windows Server 2008 R2 OS, same RAID6 24-disk Seagate ES.2 3TB array on LSI 9286-8e, same Dell R7610 Precision Workstation with A03 BIOS, same W5000 graphics card (no other cards), same settings etc. I see super-low CPU utilization in both cases. SiSoft Sandra reports x8 at 5GT/sec in x16 slot, and x4 at 5GT/sec in x4 slot, as expected. I'd like to be able to rely on the sheer speed of x16 slots. What gives? What can I try? Any ideas? Please assist Cross-posted from http://en.community.dell.com/support-forums/desktop/f/3514/t/19526990.aspx Follow-up information We did some more performance testing with reading from 8 SSDs, connected directly (without an expander chip). This means that both SAS cables were utilized. We saw nearly double performance, but it varied from run to run: {2.0, 1.8, 1.6, and 1.4 GB/sec were observed, then performance jumped back up to 2.0}. The SSD RAID0 tests were conducted in a x16 PCIe slot, all other variables kept the same. It seems to me that we were getting double the performance of HDD-based RAID6 array. Just for reference: maximum possible read burst speed over single channel of SAS 6Gb/sec is 570 MB/sec due to 8b/10b encoding and protocol limitations (SAS cable provides four such channels).

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• Building new computer, turns on, but no post

  - by addybojangles

  Pardon my ignorance here, finally decided to put together a computer and egads. I purchased a new motherboard, power supply, processor, video card and memory. ASUS M4A79XTD EVO AM3 AMD 790X ATX AMD Motherboard OCZ Fatal1ty OCZ550FTY 550W ATX12V v2.2 / EPS12V SLI Ready 80 PLUS Certified Modular Active PFC Power Supply AMD Phenom II X4 965 Black Edition Deneb 3.4GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM3 125W Quad-Core Processor XFX HD-577A-ZNFC Radeon HD 5770 (Juniper XT) 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Dual Channel Kit Desktop Memory Model F3-12800CL9D-4GBNQ (originally had links for you guys, but I lack the rep, sorry!!) And I've got it all in the tower. I put in power supply, installed processor on motherboard, installed heatsink, put in ram, and I am using an older IDE hard disk. When I start the computer, the monitor tells me "check signal cable." As far as I can tell, the heatsink on the processor is spinning, the power supply is on (obviously), and the green LED on the motherboard is on. I originally only had the bigger output plugged in to the motherboard (what I saw in a YouTube vid as well as the mobo instructions), but after doing some research, it said plug in the other ATX power supply. Which I did. And trying to power the computer results in nothing. No beeps on startup, no post, anyone have any ideas? Your ideas and help is greatly appreciated.

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• How do I fix this Windows 7 wireless connectivity issue?

  - by Charles Randall

  I have a laptop with an Intel Wireless Centrino 6300 module. Recently, the machine has stopped properly connecting to my wireless router. It will get stuck in a loop of connecting, then disconnecting and reconnecting. While connected, it will simply say "No Internet Access." Running inSSIDer 2.0, it shows my network jumping around between two channels -- I know this isn't the case, because I've set my router to sit on one single channel. My MacBook Pro, Boxee Box, PS3, and Xbox 360 all connect fine to the wireless and have no problems at all. I know it's not the wireless module, as I bought a second one recently assuming the first had died -- but I get the same behavior with both. Sometimes, I can fix the issue temporarily by deleting the network (Using the Manage Wireless Networks page), and then re-adding it (via standard wireless methods). Then it will work for a few days. But inevitably the problem comes back, and now the laptop simply won't connect to the wireless at all, even if I take steps that usually work. Since I've ruled out the hardware, and it's unlikely some kind of interference issue (because I would expect to see it on any multitude of other devices), I would think at this point that it's a problem with Windows itself. One thing that might be a hint, even though I delete the network, when I add it again, it's always listed as "Wireless Network Connection 2" even though there isn't another in the list.

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• Google Chrome mouse wheel takes keyboard focus

  - by Steve Crane

  I recently switched the default browser on all my machines from Firefox to Google Chrome. In general I’m loving Chrome but there is one behaviour that is driving me nuts. Scrolling with the mouse wheel takes keyboard focus away from the document. Here’s what happens. I’ve just opened a page or switched to a new tab and the page has keyboard focus as I can use the keyboard up/down and PgUp/PgDn keys to scroll it; no problem there. But if I then use the wheel on my mouse to scroll the page, it loses the keyboard focus and no longer responds to up/down, PgUp/PgDn, or in fact any other keyboard keys. I have to click on the page background to restore the keyboard focus. This is a minor inconvenience for scrolling but where it really drives me nuts is in Google Reader and Gmail where I use keyboard shortcuts a lot. Here I find that I scroll the article or e-mail I’m reading with the mouse wheel then get no response when I press j/k to move to the next or previous article or e-mail. I am using Windows 7 and the Chrome dev channel (version 4.0.249.43).

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• Troubleshooting wireless connection problem / site survey?

  - by johnnyb10

  I just started in the IT department of a small company (200 users) and it's clear that one of the main problems that is driving everyone crazy is the spotty nature of the wireless connectivity throughout the office, particularly in certain conference rooms. This is a huge problem because the connection often drops during important presentations to clients. I was hired to help ease the load on the existing IT admin, who has done a great job, but is overloaded with many other tasks to deal with. So I would like to try to help out with this wireless issue. I am looking for advice on the best way to solve this problem--a realistic troubleshooting methodology that does not require me to spend any money. So far, I've experimented with Ekahau Heat Mapper, which is free and helps create a site survey. But I'm not exactly sure what I'm looking for or if there are other programs/tools/methods I should try as well. Any advice would be greatly appreciated. [Some background: The wireless setup consists of an HP ProCurve Mobility MSM (710?) controller that controls 10 access points throughout the building. There are three virtual wireless networks configured on the controller: one seems to be a default that cannot be changed, one is for internal employees and authenticates via Active Directory, and the third is a guest network for visitors. When I use HeatMapper, these show up as three different SSIDs, with different MAC addresses, all on the same channel. At first I thought maybe this would cause interference, but this seems to be the way the controller works;apparently, it automatically configures the channels to avoid interference from the other APs on the network.]

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• Why would I be getting IXFR and AXFR transfer denied on my DNS server?

  - by danielj

  From everything I've researched and tried, it appears that my named.conf is configured correctly, including the allow-transfer section. Here is a sample of the errors. It is only happening with a couple of my secondary servers, but it is happening for every zone for those servers that are failing. One of the servers is attempting IXFR, the other AXFR. The result is the same: 18-Mar-2011 14:27:51.372 security: error: client 84.234.24.90#59208: zone transfer 'juansgaranton.com/IXFR/IN' denied 18-Mar-2011 14:32:18.015 security: error: client 174.37.196.55#50783: zone transfer 'cheshirecat.net/AXFR/IN' denied Here is the relevant part of named.conf. options { directory "/etc/bind"; pid-file "/var/run/named/named.pid"; files 4096; allow-transfer { 140.186.190.103; 84.234.24.90; 207.246.95.34; 203.20.52.5; 140.186.190.103; 127.0.0.1; 174.37.196.55; }; }; logging { channel "bind" { file "/var/log/bind.log" versions 3; print-time yes; print-severity yes; print-category yes; severity info; }; category lame-servers { null; }; category "default" { "bind"; }; };

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• Cannot connect on TFS 2012 server through SSL with invalid certificate

  - by DaveWut

  I saw the problem on some forums and even here, but not as specific as mine. So here's the thing, So I've configured a TFS 2012 server, on one of my personnel server at home, and now, I'm trying to make it available through the internet, with the help of apache2 on a different UNIX based, physical server. The thing is working perfectly, I don't have any problem accessing the address https://tfs.something.com/tfs through my browser. The address can be pinged and I do have access to the TFS control panel through it. How does it work? Well, with apache2 you can set a virtual host and set up the ProxyPass and ProxyPassReserver setting, so the traffic can externally comes from a secure SSL connection, through a specified domain or sub-domain, but it can be locally redirect on a clear http session on a different port. This is my current setup. As I already said, I can access the web interface, but when I'm trying to connect with Visual Studio 2012, it can't be done. Here's the error I receive: http://i.imgur.com/TLQIn.png The technical information tells me: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. My SSL certificate is invalid and was automatically generated on my UNIX server. Even if I try to add it in the Trusted Root Certification Authorities either on my TFS server or on my local workstation, it doesn't work. I still receive the same error. Is there's a way to completely ignore certificate validation? If not, what's have I done? I mean, I've added the certificate in the trusted root certificates, it should works as mentioned on some forums... If you need more information, please ask me, I'll be pleased to provide you more. Dave

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• I keep losing wireless connection

  - by posfan12

  I have a WRT54GL v1.1 wireless router and a WUSB54G v4 wireless adapter, both made by Linksys. The router is in the living room by the TV and the my computer is in the bedroom. My ISP is Brighthouse. Operating System Microsoft Windows 7 Home Premium 64-bit SP1 CPU Intel Core 2 Duo E6600 @ 2.40GHz 36 °C Conroe 65nm Technology RAM 3.00GB Single-Channel DDR2 @ 333MHz (5-4-4-14) Motherboard eMachines EMCP73VT-PM (CPU 1) 26 °C Graphics ASUS VS247 (1920x1080@60Hz) 767MB GeForce GTX 460 (nVidia) 43 °C Hard Drives 466GB Seagate ST350041 8AS SCSI Disk Device (SATA) 35 °C Optical Drives HL-DT-ST DVDRAM GH41N SCSI CdRom Device Audio High Definition Audio Device The problem is that my Internet connection will work fine for 15 minutes or so. Then the data will just stop flowing. Windows says I am still connected, and the systray icon still shows five bars. But Comodo Firewall will stop showing up and down traffic, and another of my systray applications complains about a lack of connection. What I usually do is either disconnect from the network manually, or unplug and re-plug the USB adapter. At which point the connection will work properly for another 15 minutes. I've tried unplugging my router for 30 seconds and letting it reboot. I've also tried looking for a newer driver for my adapter but I seem to have the latest version 3.1.3.0. This is a recent problem starting about a week ago. For the previous several months things were working just fine. I haven't made any changes to my system that I am aware of. The only thing I did was open my case to blow the dust out of it, then put everything back together. How do I fix this issue?

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• Linux NIC Bonding Issue (CentOS 4 / RHEL 3)

  - by jinanwow

  I am having an issue with bonding NICs on CentOS 4. It appears the bonding driver does work, but it is stuck in round-robin mode and I am trying to get to active-backup. The current config is: ifcfg-bond0 DEVICE=bond0 IPADDR=192.168.204.18 NETMASK=255.255.255.0 ONBOOT=yes BOOTPROTO=none USERCTL=no TYPE=Bonding BONDING_OPTS="mode=1 miimon=100" ifcfg-eth1 DEVICE=eth1 BOOTPROTO=none ONBOOT=yes TYPE=Ethernet MASTER=bond0 SLAVE=yes ifcfg-eth3 DEVICE=eth3 ONBOOT=yes BOOTPROTO=none TYPE=Ethernet MASTER=bond0 SLAVE=yes cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v2.6.3-rh (June 8, 2005) Bonding Mode: load balancing (round-robin) MII Status: up MII Polling Interval (ms): 0 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth1 MII Status: up Link Failure Count: 0 Permanent HW addr: 00:17:a4:8f:94:b1 Slave Interface: eth3 MII Status: up Link Failure Count: 0 Permanent HW addr: 00:1b:21:56:b8:69 cat /etc/modprobe.conf alias eth0 tg3 alias eth1 tg3 alias eth3 e1000 alias eth2 e1000 alias bond0 bonding options bond0 mode=1 miimon=100 I have tried moving the bonding information out of the ifcfg-bond0 into the modprobe configuration file. It seems that it is stuck in RR and I am trying to get it into the Active-backup (mode 1) state. Any ideas what would be causing this issue?

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• Controller Error: Do I need to worry?

  - by Kryten

  Hi, I have a HP Pavillion dv5224ea Laptop with Windows 7 on it. Recently I discovered a Error in Event Viewer: The driver detected a controller error on \Device\Ide\IdePort1. (more details): - System - Provider [ Name] atapi - EventID 11 [ Qualifiers] 49156 Level 2 Task 0 Keywords 0x80000000000000 - TimeCreated [ SystemTime] 2010-03-07T12:43:07.090197600Z EventRecordID 30198 Channel System Computer Alistair-Win7 Security - EventData \Device\Ide\IdePort1 0000100001000000000000000B0004C002000000850100C00000000000000000000000000000000000000000000000000000000004100000 -------------------------------------------------------------------------------- Binary data: In Words 0000: 00100000 00000001 00000000 C004000B 0008: 00000002 C0000185 00000000 00000000 0010: 00000000 00000000 00000000 00000000 0018: 00000000 00001004 In Bytes 0000: 00 00 10 00 01 00 00 00 ........ 0008: 00 00 00 00 0B 00 04 C0 .......À 0010: 02 00 00 00 85 01 00 C0 ......À 0018: 00 00 00 00 00 00 00 00 ........ 0020: 00 00 00 00 00 00 00 00 ........ 0028: 00 00 00 00 00 00 00 00 ........ 0030: 00 00 00 00 04 10 00 00 ........ Event Viewer is recording A LOT of these errors (sometimes 13, one after the other!). Do I need to worry? What does this error mean? What device could "\Device\Ide\IdePort1" be? What is a ATAPI Error? Do I need to re-install Windows? I generally find the occurs when I try to backup my machine (using Windows Backup) or when using a program that uses Volume Shadow Copy. I have run "sfc", no problems. There are no Device Errors in Device Manager. I have also run "vssadmin list writers", no problems. Whats going on??? Would it be a good idea to re-install Windows 7?

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• Windows Server 2008 R2 install reboots unexpectedly during "Completing installation" phase

  - by knda

  I am attempting to install Windows Server 2008 R2 onto a Cisco UCS C201 M2 rack mounted server but am having major difficulties and wondering if anyone has some insight or items they could recommend for me to look at to get this one resolved. Installation is being attempted via the Cisco remote console (using CIMC's Virtual dvd-rom).. following the first phase of Setup where the installation files are copied to the target hard drive, then a reboot occurs to load Setup from the HDD, mid-way in the "Completing Installation" phase the system then reboots unexpectedly. System configuration Cisco UCS C201 M2 (2RU rack mounted server) 16GB RAM, 2x 73GB 15K SAS, 4x 300GB 10k SAS Add-on cards - Intel quad-port GigE card (no fibre channel cards) Storage - LSI MegaRAID SAS 9261-8i. onboard SATA is disabled (no SATA drives connected) KVM - Belkin No physical DVD-ROM.. :( I have... Run memtest86+, no RAM faults Disabled/enabled SATA support (BIOS) Attempted install from USB DVD-ROM, no effect Attempted unattended install scripted via Cisco Configuration Manager DVD provided Removed Belkin KVM in case that was causing drama Discovered that the Cisco website is "awesome" for searching for PDFs/Drivers cough, reverted back to Google Downloaded latest LSI drivers from LSI's site and used during Server 2008 install checked Windows ISO against checksum's from MS site checked Windows ISO by using it for an install in a VM Running out of ways to troubleshoot this as I am not sure how to enable any sort of 'verbose' mode during the setup process. Next step I have planned is to remove the Intel NIC and try the installation again.. Edit: Problem was the "Cisco INTEL QUAD PT GBE" (1000/PT) .. will have to see if this card is faulty or if it's just drivers.. thanks for the help.

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• Audio card with built-in ground isolator?

  - by Dave Jarvis

  What audio cards would you recommend that eliminate hum, and hard-drive & mouse movement signal interference? Hardware components: Motherboard. Asus P5Q SE Audio. Realtek ALC 1200, 8-Channel High-Definition Audio CODEC (on board) Harddrive. WD Caviar 320 GB Mouse. Logitech Marbleman USB Mixer. Mackie d.4 Pro Amplifier. Sonance Sonamp 260 All components are plugged into the same Monster Power HDP 910 powerbar (does not help eliminate noise). I have no other components plugged in. The computer uses a Monster iCable 1000 to go from mini (on board audio) to RCA (mixer). I have moved the cable as far from other cables as possible. A ground loop isolator between the mixer and on board audio eliminates all noise. I would rather not use a ground loop isolator; an internal audio card that is Linux-compatible (Kubuntu) would be ideal. Suggestions?

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