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• Connect to MS Sql 2008 on local VM

  - by Campo

  I have a test machine. Server 2008 with Hyper V MSSQL 2008 Enterprise Lets call it MACHINE A on the VM it is as well Server 2008 with another MSSQL 2008 Ent Call it VM B I setup a DB on MACHINE A then backed it up and restored following the prepare database for mirroring instructions on MSDN onto VM B. I used to be able to connect to the VM B Instance from the main test server (MACHINE A) but now I cannot for some reason. It cannot seem to find the instance at all even when I browse network databases. I can ping the VM from any computer on the network and access its shares so I know it is discoverable. Just the end of a long day maybe I am missing something here.

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• Pronunciation of "char"

  - by Zannjaminderson

  I know there's another question on here already about pronunciation here, but it's got a whole list of programming terms. I'm just interested in finding out how everybody pronounces just one thing - "char". I personally like "care" as in the first syllable of "character", since that's what it represents, but in past experience I've found there are far more people who say "char" as in "char-broiled", and some who say "car". Sorry to start a holy war, but I'm curious.

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• How do I rate limit google's crawl of my class C IP block?

  - by Zak

  I have several sites in a class C network that all get crawled by google on a pretty regular basis. Normally this is fine. However, when google starts crawling all the sites at the same time, the small set of servers that back this IP block can take a pretty big hit on load. With google webmaster tools, you can rate limit the googlebot on a given domain, but I haven't found a way to limit the bot across an IP network yet. Anyone have experience with this? How did you fix it?

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• High number of ethernet errors. Tool for testing the ethernet card?

  - by Fabio Dalla Libera

  I have an Asus Sabertooth X79. I often get corrupted files. I checked the RAM, but memtest finds no errors. To avoid the possibility of disk errors, I tried copying the files to tmpfs. If I copy from the network, I get md5sum mismatches about once every 10 times using a 6Gb file. Copying from RAM to RAM, I didn't get mismatches. I get a very high number of errors in ifconfig (compared to others PCs I just took as reference, which have 0 with much more traffic). Here is an example RX packets:13972848 errors:200 dropped:0 overruns:0 frame:101 The motherboard is new, but do you think there're some problems with it? What could I use to test the (integrated) network adapter? What else do you think I should double check? --edit-- I tried another NIC, it gives a lot of Corrupted MAC on Input. Disconnecting: Packet corrupt lost connection. I noticed that another PC downloads at 11.1MB/s without problems. This pc at 66.0 MB/s. Is there any way to try to limit the speed?

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• networking tunnel adapter connections?

  - by Karthik Balaguru

  I understand that Tunnel Adapter LAN is for encapsulating IPv6 packets with an IPv4 header so that they can be sent across an IPv4 network. Few queries popped up in my mind based on this :- If i do 'ipconfig', Apart from ethernet adapter LAN details, I get a series of statments as below - Tunnel adapter Local Area Connection* 6 Tunnel adapter Local Area Connection* 7 Tunnel adapter Local Area Connection* 12 Tunnel adapter Local Area Connection* 13 Tunnel adapter Local Area Connection* 14 Tunnel adapter Local Area Connection* 15 Tunnel adapter Local Area Connection* 16 Except for the *16, all the other Tunnel Adapter Local Area Connections show Media Disconnected. Why is the numbering for the Tunnel adapter LAN not sequential? It is like 6, 7, 12, 13, 14, 15, 16. A strange numbering scheme! I tried to figure it out by thinking of some arithmetic series. But, it does not seem to fit in. There is a huge gap between 7 and 12. Any ideas? What is the need for so many Tunnel Adapter LAN connections? Can you tell me a scenario that requires all of those ? I did ipconfig /all to get more information. From the listing, I understand that: 16, 15, 14, 12 are Microsoft 6to4 Adapters 13, 6 are isatap Adapters 7 is Teredo Tunneling Pseudo-interface I understand that the above are for automatic tunneling so that the tunnel endpoints are determined automatically by the routing infrastructure. 6to4 is recommended by RFC3056 for automatic tunneling that uses protocol 41 for encapsulation. It is typically used when an end-user wants to connect to the IPv6 Internet using their existing IPv4 connection. Teredo is an automatic tunneling technique that uses UDP encapsulation across multiple NATs. That is, It is to grant IPv6 connectivity to nodes that are located behind IPv6-unaware NAT devices ISATAP treats the IPv4 network as a virtual IPv6 local link, with mappings from each IPv4 address to a link-local IPv6 address. That is to transmit IPv6 packets between dual-stack nodes on top of an IPv4 network. That is, to put in simple words, ISATAP is an intra-site mechanism, while the 6to4 and Teredo are for inter-site tunnelling mechanisms. It seems that Teredo should alone enabled by default in Vista, But my system does not show it to be enabled by default. Interestingly, it shows a 6to4 tunnel adapter (Tunnel adapter LAN connection 16) to be enabled by default? Any specific reasons for it? If i do ipconfig /all, why is only one Teredo present while four 6to4 are present ? I searched the internet for answers to the above queries, but I am unable to find clear answers.

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• Windows server 2008 R2 IIS7 file permissions

  - by StealthRT

  Hey all i am trying to figure out why i can not access a index.php file from within the wwwroot/mollify/backend directory. It keeps coming up with this: Server Error 403 - Forbidden: Access is denied. You do not have permission to view this directory or page using the credentials that you supplied. I've given all the permissions (Full control) to the wwwroot directory i could think of (IUSR, Guest, GUESTS, IIS_IUSRS, Users, Administrators, NETWORK, NETWORK SERVICE, SYSTEM, CREATOR OWNER & Everyone). I also added index.php to the "Default Document" under my website settings in IIS 7 manager. What else am i missing? Thanks! David

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• dhcpd won't let go of old leases

  - by Jakobud

  We have DHCP setup to hand out leases in the following range: 192.168.10.190 - 192.168.10.254 (roughly 65 leases) Our small business network only has about 30 computers that use DHCP. We noticed that dhcpd stopped handing out new dynamic leases to the computers, even though there are definitely not 65 computers on the network. Why has it stopped handing out leases? Is it not releasing old un-used leases? How do we tell dhcpd to let go of old leases and start handing out fresh ones again?

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• Static Routes and the Routing Table

  - by TheD

  This is very much a learning question if someone would be happy to explain a couple of concepts. My question is - the default routing table that exists in, in my case, a default Windows 7 install, what do each of the routes in the table do? Here is a screenshot: The 10.128.4.0 is just a route I've added while messing. I understand from a question I posted on Superuser the first route is just a default route that will route all traffic for any IP to my default gateway on my Interface in use. But what about the others? And how would the routing table handle a machine with multiple NIC's, perhaps connected to two different networks, or maybe even two NIC's on the same network so a VM can have a physical Network card instead of each VM sharing the hosts. Thanks!

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• CentOS 6.5 proxy bypass/no_proxy not working

  - by Naruto Uzumaki

  I am running CentOS 6.5 on my desktop. I've set the Network Proxy using the network proxy application provided under Preferences. I've also set the following exceptions: localhost,127.0.0.0/8,172.16.0.0/12,192.168.0.0./16 But whenever I am using wget (I'm testing the proxy settings using using wget) then wget tries to connect to the proxy for private addresses, but wget localhost works fine and doesn't use the proxy. I also removed all the proxy settings and set the proxy in the shell: export http_proxy="<proxy_url>:<port>" export https_proxy="<proxy_url>:<port>" export no_proxy="localhost,127.0.0.0/8,172.16.0.0/12,192.168.0.0./16" It work when I use the command wget <external_url> or wget localhost but fails when I use the command wget <private address from the $no_proxy variable>. I also tried setting the variables in Ubuntu 14.04 also and facing the same issue. Regards,

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• Tablets Running IDEs

  - by Seth P.

  I am new to the tablet market, but i am trying to learn more. Are any current tablets capable of running programming software such as Visual Studio? I understand they'd have to come up with some kind of streamlined version, but I can imagine the programmers out there excited about the possibility. Does anything like that already exist, or are there rumors of it being available in the near future? Thanks, Seth

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• Setting up a static IP address (public) in Ubuntu

  - by ycseattle

  I have a business class internet connection and need to setup a static ip address for a machine. I did a search online and only find how to setup static local ip addresses (like 192.168..). I tried the same technique, and only setup the ip address and netmask, but after restart networking the computer could not connect to the outside world. This is what I did: 1) edit /etc/network/interfaces iface eth0 inet static address 173.10.xxx.xx netmask 255.255.255.252 2) edit /etc/resolv.conf search wp.comcast.net nameserver xx.xx.xx.xxx nameserver xx.xx.xx.xxx 3) restart network sudo /etc/init.d/networking restart Now the last step didn't report error, ifconfig shows the ip address was set, but this server cannot connect to outside world, ping google.com and reports "unknown host google.com". Any ideas?

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• static routes, cisco ASA, remote locations

  - by Jeff

  192.168.3.1(ASA) - 192.168.2.1(ASA) - ( internet ) - 192.168.1.1(ASA) DomainController, FS, Exchange 192.168.0.1(ASA) - above is a rough idea what my network setup looks like. each internal ip (192.168.x.x) is located behind an ASA. Each location has a different gateway for the internet. They all talk to the 192.168.1.1 network for dns, dhcp, dc, exchange and so on. They can only see the 192.168.1.1, they can not see each other. In my Static Routes on my 192.168.1.1 ASA, should i have them configure as follows? example: 192.168.x.x 255.255.255.0 Locations_Internet_Gateway_IP OR 192.168.x.x 255.255.255.0 Main_Locations_Internet_Gateway_IP not sure which configurtation is correct, thanks in advance for any help!

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• Where does the "mm" come from in GTKmm, glibmm, etc

  - by Cole Johnson

  I understand that the "mm" suffix [in various GTK-associated C++ binding libraries] means "minus minus," but where exactly does it come from? I understand that there is a programming language called "C--," but if there were bindings (and I'm pretty sure I've seen some), they would be suffixed "--". TL;DR: Is there some page on gnu.org that explains the "mm" suffix in various C++ bindings or is it just a de facto standard adopted by the open source community with no reasoning behind it?

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• Configuring Ubuntu for Global SOCKS5 proxy

  - by x50

  Does anyone know the best way to configure Ubuntu to use a SOCKS5 proxy for all network traffic? Server is ubuntu server - all cli. So I cannot set via the Proxy Settings GUI. We want to push all outbound traffic through the proxy (apt-get, http, https, etc). I do need to separate ssh traffic so it stays locally. Everything else should hit the proxy server. not that it matters, but I'm using Squid for the proxy server. I know this is easy on Mac and Windows as you can set a proxy on the actual network interface. Can you do the same on Ubuntu?

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• MIDI Over Networking on OSX: Lots of beachballing

  - by Yar

  I have 4 computers connected to a Wifi router (with no Internet uplink). Whenever we enter the Network interface for Audio/Midi preferences in ANY of the computers, the Mac beachballs and then finally finds its way. Occasionally, however, one of the computers fails to receive the MIDI information that was destined for it via the Network MIDI interface. Changing to all wired connections does NOT help. Adding Internet uplink DOES help and the problem is resolved. This makes no sense to me as the computers can access each other just fine with or without the Internet uplink. Any ideas? [NOTE: I'll update the question if people correct my terminology, or feel free to do that if you have the rights].

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• What problems will I face if I remove the concept of interfaces from my code?

  - by Vishwas Gagrani

  I have been programming for many years but I am still not comfortable with the concept of "Interfaces". I try to use interfaces but many times I don't see a mandatory use for it. I think this is probably because the projects weren't so big, or because interfaces are more useful when teamwork is involved. So, making another attempt to understand the importance of interfaces, here is my question: What problems will I face if I remove the concept of interfaces from my code?

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• What the hell was THAT?!?

  - by Massimo

  My system is Windows XP SP3, updated with the latest patches. The PC is connected to a Cisco 877 ADSL router, which does NAT from the internal network to its single static public IP address. There are no forwarded ports, and the router's management console can only be accessed from the inside. I was doing two things: working on a remote office machine via VPN and browsing some web pages on the Cisco web site. The remote network is absolutely safe (it's a lab network, four virtual servers, no publicly accessible services and no users at all; also, none of what I'm going to describe ever happened there). The Cisco web site... well, I suppose is quite safe, too. Suddenly, something happened. Strange popups appears anywhere; programs claiming they're "antimalware", "antispyware" et so on begins autoinstalling; fake Windows Update and Security Center icons pop up in the system tray. svchost.exe began crashing repeatedly. Then, finally, after some minutes of this... BSOD. And, upon rebooting, BSOD again. Even in safe mode. Ok, that was obviously some virus/trojan/whatever. I had to install a new copy of Windows on another partition to clean things up. I found strange executables, services and DLLs almost anywhere. Amongst the other things, user32.dll and ndis.sys had been replaced. A fake software called "Antimalware Doctor" had been installed. There were services with completely random names or even GUIDs (!), and also ones called "IpSect" and "Darkness". There were executable files without an .exe extension. There were even two boot-class drivers, which I'm quite sure are the ones that finally caused the system to crash. A true massacre. Ok, now the questions: What the hell was that?!? It was something more than a simple virus! How did it manage to attack my computer, as I am behind a firewall and was not doing anything even only potentially harmful on the web at the time?

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• default gateway of a host

  - by varun

  if my understanding is correct, the following is what happens when a host A wants to communicate with a machine X outside its network. 1) The host ,checks it routing table to find out if there is any direct routes to the machine. 2) It finds out that the machine is outside its network and has to sent the packets to the default gateway(router) R. 3) The host sents an ARP broadcast to get the mac of the router R. 4) After getting the MAC, the host creates a packet with src IP and MAC as that of the host A, dest IP of the remote machine X and dest MAC of the router R. 5)The router R receives the packet, either drops its or sents its to its next hope, which can be another router or the remote machine X itself. Can anyone explain, how the steps would be, if i set the default gateway of the host A as host A itself...?

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• Cloning Windows Solitaire Game in Silverlight 3 - Part 1

  In the two parts of this series, you will learn to write a Silverlight 3 based solitaire game like the one shipped with various Windows versions. The main purpose to write this game is to explore the mouse drag and drop related programming in Siverlight 3.

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• Using virtual functions

  - by Tucker Morgan

  I am starting to use virtual functions, and i am programming a simple text game, my question is this, if i have a virtual function called spec_abil with in a Super class called rpg_class. If you allow the player to class what class they want to play, say a mage class, a archer class, and a warrior class, which all have their own spec_abil function. How do you write it so that the program knows which one to use depending on the chosen class.

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• Useless Plesk Error?

  - by Josh Pennington

  I am trying to determine why Plesk on my server won't start and I have no idea where to even start (since my hosting company appears to not want to help me out). Anyways, the error in my Plesk error_log is as follows: 2010-12-25 21:30:28: (log.c.75) server started 2010-12-25 21:30:28: (network.c.336) SSL: error:00000000:lib(0):func(0):reason(0) 2010-12-25 21:30:28: (log.c.75) server started 2010-12-25 21:30:28: (network.c.336) SSL: error:00000000:lib(0):func(0):reason(0) It leads me to believe its a problem with the SSL on the server but I am not sure what to make of the error. Can someone lead me in the right direction? Thanks Josh Pennington

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• Show Notes: Getting Past the Cloud Hype

  - by Bob Rhubart

  This week’s ArchBeat podcast features an unvarnished bit of conversation culled from a recent virtual meet-up. These meet-ups are informal conversations among architects, many of who have participated in previous ArchBeat programs. There’s no prearranged topic, so the participants talk about whatever is on their minds. The most recent meet-up included Oracle ACE Director Ran Batra, director of cloud computing product development with AT&T, and Daniel Templeton, principal product manager for Oracle Grid Engine, and the man behind Dan T’s GridBlog. The conversation took place at the end of the year – and the end of the decade – a time when most tech publications feature their predictions for the coming year.  I wanted a different spin on that theme, so I asked Ron and Dan to talk about the technologies about which they weren’t all that optimistic.   I found that ten-minute chunk of conversation particularly interesting, so that’s what you’re going to hear this week. Listen Get Social If you have questions or comment for Ron and/or Daniel you can connect via the following: Ron Batra Blog | Twitter | LinkedIn | Oracle Mix | Oracle ACE Profile Daniel Templeton Blog | Twitter | LinkedIn Coming Up Oracle ACE Director Debra Lilley talks about her role in the UKOUG’s development group and that group’s collaboration with Oracle on Oracle Fusion Applications. Dr Frank Munz, author of Middleware and Cloud Computing: Oracle Fusion Middleware on Amazon Web Services and Rackspace Cloud. Stay tuned: http://feeds2.feedburner.com/OtnArch2ArchRSS   del.icio.us Tags: oracle,oracle technology network,archbeat,cloud computing,software architect,podcast Technorati Tags: oracle,oracle technology network,archbeat,cloud computing,software architect,podcast

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• Wireless not detected on an hp Pavilion g6 - RT5390PCIe

  - by Earl Larson

  I just bought an HP Pavilion g6 laptop and I installed Natty Narwhal alongside Windows 7. In Windows 7, my WiFi works perfect but in Ubuntu it absolutely (no matter what I do) won't detect my home WiFi network. Here is the output of "lspci": earl@ubuntu:~$ lspci 00:00.0 Host bridge: Advanced Micro Devices [AMD] RS880 Host Bridge 00:01.0 PCI bridge: Advanced Micro Devices [AMD] RS780/RS880 PCI to PCI bridge (int gfx) 00:04.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 0) 00:05.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 1) 00:06.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 2) 00:11.0 SATA controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] 00:12.0 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI0 Controller 00:12.2 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB EHCI Controller 00:13.0 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI0 Controller 00:13.2 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB EHCI Controller 00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 42) 00:14.1 IDE interface: ATI Technologies Inc SB7x0/SB8x0/SB9x0 IDE Controller (rev 40) 00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) (rev 40) 00:14.3 ISA bridge: ATI Technologies Inc SB7x0/SB8x0/SB9x0 LPC host controller (rev 40) 00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge (rev 40) 00:14.5 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI2 Controller 00:16.0 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI0 Controller 00:16.2 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB EHCI Controller 00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor HyperTransport Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Address Map 00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Miscellaneous Control 00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Link Control 01:05.0 VGA compatible controller: ATI Technologies Inc M880G [Mobility Radeon HD 4200] 01:05.1 Audio device: ATI Technologies Inc RS880 Audio Device [Radeon HD 4200] 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05) 03:00.0 Network controller: Ralink corp. Device 5390 04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5209 (rev 01) earl@ubuntu:~$

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• Ethernet card not detected on Ubuntu Server 12.04

  - by Dana

  My onboard ethernet isn't detected after a re-install of Server 12.04. For reasons I won't get into here, I had to put the server's drive into another machine to install Ubuntu, then swap back into the server. So the server starts up fine, except for the "Waiting for network configuration". I read in another article that Server, by default, doesn't handle new mac addresses for hardware changes dynamically, unlike Ubuntu Desktop, but a look at /etc/udev/rules.d/70-persistent-net.rules shows only one ethernet interface. Shouldn't it show both the old, and the new? lspci -vv shows an ethernet interface, so what the heck is going on? I should mention that the onboard LAN is enabled in the BIOS. And I know this isn't important, but all this started when I changed some network configuration settings in webmin before the re-install. It couldn't download any updates, so I tinkered a little. Broke, it, installed FreeNAS, which worked, but I didn't like it, then went back to Ubuntu Server, and now I'm in this pickle. Thanks for any advice!

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• "Account locked out" security event at midnight

  - by Kev

  The last three midnights I've gotten an Event ID 539 in the log...about my own account: Event Type: Failure Audit Event Source: Security Event Category: Logon/Logoff Event ID: 539 Date: 2010-04-26 Time: 12:00:20 AM User: NT AUTHORITY\SYSTEM Computer: SERVERNAME Description: Logon Failure: Reason: Account locked out User Name: MyUser Domain: MYDOMAIN Logon Type: 3 Logon Process: NtLmSsp Authentication Package: NTLM Workstation Name: SERVERNAME Caller User Name: - Caller Domain: - Caller Logon ID: - Caller Process ID: - Transited Services: - Source Network Address: - Source Port: - It's always within a half minute of midnight. There are no login attempts before it. Right after it (in the same second) there's a success audit entry: Logon attempt using explicit credentials: Logged on user: User Name: SERVERNAME$ Domain: MYDOMAIN Logon ID: (0x0,0x3E7) Logon GUID: - User whose credentials were used: Target User Name: MyUser Target Domain: MYDOMAIN Target Logon GUID: - Target Server Name: servername.mydomain.lan Target Server Info: servername.mydomain.lan Caller Process ID: 2724 Source Network Address: - Source Port: - The process ID was the same on all three of them, so I looked it up, and right now at least it maps to TCP/IP Services (Microsoft). I don't believe I changed any policies or anything on Friday. How should I interpret this?

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