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• Using m0n0wall in a VM for testing.

  - by tombull89

  I'd like to use m0n0wall inside a (VirtualBox) VM to play about with and see what it can do. Ultimately the goal is to have a number of virtual machines connected to a internal virtual network which goes through to the m0n0wall VM, and then the m0n0wall box connected to the internet through NAT or a bridged addaptor on my host machine. I can find out how to set the LAN and WAN addresses, but this seems to be only for using m0n0wall as a router intead of attached to another router. Let's see if I can diagram this: [Virtual Machine]---Internal (VM Only) Network ---[m0n0wall VM]---Bridged/NAT Addaptor---["real" router]---Internet. Can anybody suggest how I should do this or am I thinking m0n0wall isn't meant to be used like this?

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• Apress Deal of the Day - 22/Feb/2010 - Entity Framework 4.0 Recipes: A Problem-Solution Approach

  - by TATWORTH

  Todays $10 deal from Apress at  http://www.apress.com/info/dailydeal is "Entity Framework 4.0 Recipes: A Problem-Solution Approach" Whilst I am still wary of using the Entity framework and I would caution against its use for updates in financial systems, unless you use a technique such as you can find on pages 509-512 of this book. This book is very impressive as I found the answer to this in about 2 minutes from the time I downloaded the e-book. Entity Framework 4.0 Recipes: A Problem-Solution Approach With this book, you will learn the core concepts of Entity Framework through a broad range of clear and concise solutions to everyday data access tasks. Armed with this experience, you will be ready to dive deep into Entity Framework, experiment with new approaches, and develop ways to solve even the most difficult data access challenges. $49.99 | Published May 2010 | Larry Tenny

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• SQL Server Migration Assistant 2008 (SSMA)

  One of my client’s requirements is to migrate and consolidate his company departments’ databases to SQL Server 2008. As I know the environment, they are using MySQL , MS-Access and SQL Server with different applications. Now the company has decided to have a single dedicated SQL Server 2008 database server to host all the applications. So there are a few things to do to upgrade and migrate from MySQL and MS-Access to SQL Server 2008. For the migration task, I found the SQL Server Migration Assistant 2008 (SSMA 2008) is very useful which reduces the effort and risk of migration. So in this tip, I will do an overview of SSMA 2008. Join SQL Backup’s 35,000+ customers to compress and strengthen your backups "SQL Backup will be a REAL boost to any DBA lucky enough to use it." Jonathan Allen. Download a free trial now.

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• ubuntu 13.10 liveboot/installer loads dots, then does nothing

  - by user200245

  Problem: When I load an Ubuntu 13.10 (64-bit) live USB / installer on my laptop, the purple Ubuntu screen with the white dots appears, the dots turn orange (indicating its loading), then after a few seconds the screen turns completely black and nothing else happens. I can not install Ubuntu 13.10 on this computer. What I've Tried: I've re-downloaded the .iso file from canonical. I've burned the .iso to the USB using the default linux usb image writer, and the Windows programs YUMI and Linux Live USB Creator; same thing happens each time. Yes, I'm sure my computer is 64 bit. I'm currently running Linux Mint 15 on it, which runs perfectly. It's a Sager NP7330 / Clevo w230st. extra info A few months I installed Ubuntu 13.04 on this machine, which installed perfectly. Normally I'd install that then dist-upgrade to 13.10, HOWEVER this computer is only a few months old and the wireless/network drivers for my network card were not implemented until kernel 3.11 (which comes w ith 13.10). I tried manually downloading kernel 3.11 and installing it (on 13.04), however the wireless card nor ethernet card still did work with Ubuntu 13.04. So my only real hope is to get 13.10 working. Does anyone know what's up with this?

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• Can i change the subnet on the vpn side of a server without having to change its whole lan (to avoid collission)

  - by Gusty

  Ohai, ive got a xp server with a client connecting via VPN. Problem (as we all know) is that sometimes the subnets clash. Instead of changing the whole server network every time this happens, cant i just have the server appear to have a different subnet to vpn clients? I have no interest in accessing other computers than the server on its LAN. I tried just turning off automatic dhcp in the servers vpn settings and changed it to 172.31.255.x. The client gets the address assigned alright and it can ping 172.31.255.1 but i cannot ping the server name (because the dns on the clients vpn connection points at 192.168.0.1?) wisdom? PS everything worked until the client hit a network with the same subnet as the server lan. thanks

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• Set up router to vpn into proxy server

  - by NKimber

  I have a small network with a single LinkSys router connected to broadband in US via Comcast. I have a VPN proxy server account that I can use with a standard Windows connection, allowing me to have a geographic IP fingerprint in Europe, this is useful for a number of purposes. I want to setup a 2nd router that automatically connects via VPN to this proxy service, so any hardware that is connected to router 2 looks as though it is originating network requests in Europe, and any hardware connected to my main router has normal Comcast traffic (all requests are originating from USA). My 2nd router is a LinkSys WRT54G2, I'm having trouble getting this configured. Question, is what I'm trying to do even feasible? Should the WRT54G2 be able to do this with native functionality? Would flashing it with DD-WRT allow me to achieve my objectives?

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• pfSense router gives DNS rebinding warning when accessing subdomains

  - by Richard Maddis

  I have just set up a router running pfSense on our network and forwarded the appropriate ports. I have a small web server running in my network, and a domain name pointing to our (WAN) IP. When accessing that domain name, everything works fine. However, when accessing a subdomain of the domain name, pfSense will give a DNS rebinding warning. This did not happen back when I used a DD-WRT router. What is the proper way to fix this? The DNS records for the subdomain also point to the same address (I use a virtual server to differentiate the subdomains.)

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• Bringing the xenbr0 interface up on XEN under Ubuntu 8.04

  - by iyl

  I installed XEN on Ubuntu 8.04 using this tutorial: http://www.howtoforge.com/ubuntu-8.04-server-install-xen-from-ubuntu-repositories but after I reboot with the XEN kernel, I don't have xenbr0 device. I see that network-bridge script runs and it creates peth0 device, but not xenbr0. I have a very basic IP setup, with a single static IP defined in /etc/network/interfaces. The only unusual thing is that my hosting (1&1) gave me a netmask 255.255.255.255, so I had to add the default gateway with this script: /sbin/route add -host 10.255.255.1 dev eth0 /sbin/route add default gw 10.255.255.1 Everything else is plain vanilla Ubuntu 8.04.

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• Cannot schedule task for domain user account

  - by Filburt

  On our Win 2008 machines I can't schedule tasks for domain users because the domain name does not resolve to network name but the AD dc name. The "network name" looks like ABCDEFGE-HIJKLM and the "dc" / "name" would look like ABCDEFGE-HIJKLMN. When selecting the domain user account the account qualifier will look like ABCDEFGE-HIJKLMN\task.user. This results in an "invalid account" error. When however keeping the currently logged in user it will display ABCDEFGE-HIJKLM\current.user. Does this behaviour result from the presumable "illegal" domain name? Is there a workaround for this?

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• Oracle Event: Database Enterprise User Security

  - by user12603048

  One of the high-value benefits of an integrated Identity and Access Management platform is the ability to leverage a unified corporate directory as the primary authentication source for database access. On July 11, 2012 at 08:00 am PDT, Oracle will host a webcast showing how Enterprise User Security (EUS) can be used to externalize and centrally manage database users in a directory server. The webcast will briefly introduce EUS, followed by a detailed discussion about the various directory options that are supported, including integration with Microsoft Active Directory. We'll conclude how to avoid common pitfalls deploying EUS with directory services. Discussion topics will include Understanding EUS basics Understanding EUS and directory integration options Avoiding common EUS deployment mistakes Make sure to register and mark this date on your calendar! - Click here to register.

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• Leapfrog Crammer won't mount as a USB flash drive

  - by William

  I can't seem to get the Leapfrog Crammer study and sound system to show up as a flash drive under ubuntu so I can transfer stuff to it. I don't want to install the leapfrog bloatware, can someone help me with this? Additional Information: When I plug my crammer into my computer it shows a 1 MB file system with a link to download the crammer software. I want to know how to access the rest of the crammer's file system so I can transfer music to it. The crammer does not show any other partitions in natulius. According to an article on the internet, the crammed is divided into three partitions: One with a link to install the crammer software, one with all content(music, flash cards, etc.) and one for firmware. I want to know how to access the one with the content so I can add music to the player. Can anyone help me with this? Thanks in advance.

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• "The requested operation could not be completed due to a file system limitation" 3202

  - by user46529

  I backup SQL Server database and it fails BACKUP DATABASE dd TO DISK = '\backupServer\backups\dd.bak' WITH COMPRESSION, CHECKSUM, NOFORMAT, INIT , BlockSize = 65536 , BufferCount = 2200 , MaxTransferSize = 4194304 The backup size is 3TB and I have 6TB free space on bacup server. I am using backup parameters per SQLCAT whitepaper. Everything works ok when I backup to local HDD and it always fails when I backup to network share. After about 6 hours. Can't find why. Thank you. Yes. The backup over the network is fastest and saves me 3Tb of local disk space :) Thanks for pointing to the memory issue. I left 4Gb to OS and it worked!

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• External hard drive failing, is backup recovery possible?

  - by backitup

  I have a Seagate Freeagent external hard drive. While I was backing it up on Windows XP my pc crashed and I received the horrifying "Delayed Write Error" when I rebooted citing "$MFT" and a few other files. I tried to unmount it, but to no avail. Now my pc just crashes when I try to access it via Windows. In Ubuntu I am able to view it through disk utility. SMART status is "DISK FAILURE IMMINENT". Fdisk doesn't work, and the SMART tests fail on "Reallocated Sector Count". Is there any way for me to rescue any of my data. I can still access the drive but as soon as I do that it crashes.

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• Can't get utouch to show available wifi networks

  - by kellrobinson

  I have ubuntu touch installed on a 2014 Nexus 7. Swiping down from the wireless symbol reveals a "Network" menu with the choices Flight Mode, Wifi Settings, and Cellular Settings. Wifi Settings leads to another menu: Previous Networks, and Other Networks. Previous Networks shows a list of networks used in the past; Other Networks opens an empty box for typing in the name of a network. I don't see any way to show a list of available networks detected by the device. On rare occasions, swiping down the wireless symbol actually does bring up a list of detected networks. But most of the time ubuntu touch exhibits the behavior described above, with no apparent way to bring up the list of available wireless networks. I would like to see a list of the availble networks, if there is a way to do so. Edit: The wifi menu works properly now. Just needed a couple of reboots, it seems. I have other problems, though. If these other problems persist I will make a post specific to them. This device is a 2013 Nexus 7 4G. Not sure how to find the ubuntu version. Can't navigate the settings menu right now because it got stuck and there's no way to go back, except to reboot(!) I'll open multirom manager or boot into recovery and look for the information there.

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• Gmail/Facebook/Hotmail not opening in Firefox/IE on Windows 7 Home

  - by singlepoint

  Hi, I am unable to open Gmail/Facebook/Hotmail on Firefox/IE on Widows 7 Home. I just unboxed a brand new hp laptop with Norton Security Suite running inside. I get following error message on Firefox. Please help. The connection has timed out The server at www.google.com is taking too long to respond. * The site could be temporarily unavailable or too busy. Try again in a few moments. * If you are unable to load any pages, check your computer's network connection. * If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web

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• Manually forcing TCP connection to retry

  - by Vi

  I have a TCP connection (SSH session to some computer for example) Network suddenly goes down and drops all packets (disconnected cable, out of range). TCP resends packets again and again, retrying with increasing delays. I see the problem and plug the cable back (or restore network somehow). TCP connection finally successfully resends some packet and continues. The problem is that I need to wait for a some timeout on point 5. I want to use my opened SSH session now and not wait for 5-10 seconds until it finds out that connection is working again. How to force all TCP connections to resend data without now in GNU/Linux?

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• Unable to ping between subnets and out to internet

  - by battlemidget

  My setup is Modem - Linksys router - Laptop with 2 devices (wlan0/eth0) - desktop machine Router is 192.168.1.1 gateway to the internet Laptop wlan0 is 192.168.1.4 with a gw of 192.168.1.1 Laptop eth0 is 192.168.2.254 which acts as a second gateway desktop is 192.168.2.100 On laptop i've setup ip_forward to 1, and have inserted 2 iptables rules -A FORWARD -i eth0 -o wlan0 -j ACCEPT -A FORWARD -i wlan0 -o eth0 -j ACCEPT The laptop can ping outside the network (i,e, yahoo.com) it can not ping 192.168.2.100. The desktop can ping 192.168.2.254 but nothing outside the network or 192.168.1.0 subnet. On laptop ip route show lists: 192.168.2.0/24 dev eth0 proto kernel scope link src 192.168.2.254 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.4 127.0.0.0/8 dev lo scope link default via 192.168.1.1 dev wlan0 What am I missing to make my desktop go through the laptop in order to access the router which provides access to the internet? Thanks

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• SQL ERROR: Verify that the instance name is correct and that SQL Server is configured to allow remote connections?

  - by scepak

  I am getting following error while connecting to my local Sql Express. An error has occurred. Details of the exception: A network-related or instance-specific error occurred while establishing a conne ction to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Serve r/Instance Specified) Unable to connect to SQL Server database. I am able to connect to Sql Server using Management Studio.

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• Given a used laptop with Ubuntu installed, how do I get past the password demands?

  - by user287494

  Recently given a laptop with Ubuntu 12.1 installed alongside Windows 7. Can only access Ubuntu, which is fine for everyday use (LibreOffice, Firefox, etc.) but there's an authentication password required to install the 500+ updates, and when trying to run anything in terminal, it asks for "quiz's" password. It won't allow me to go into root mode to bypass the password (if that's even a real thing?). I'm completely new to Linux, but am fascinated at the capabilities and would like to mess around some more, but keep getting stopped by these passwords. What do I have to do? Uninstall and re-install? How does one do that if I don't even have access to the Windows 7 OS because it is password protected as well? Thanks in advance for any information and help.

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• I need to make Windows 7 STOP disabling the wifi adapter when the wired LAN is connected

  - by Escobar Ceaser

  This is a Dell Latitude E6430. There is a setting in the bios to control this behavior and I have DISABLED it but it still happens. I am also running the latest bios. When I plug in a network cable the wifi adapter becomes disabled. I need it to stay enabled. What else could be making this happen? EDIT: The reason I need to do this is because with NETSH WLAN commands you can create a wifi hotspot by sharing the internet connection on the wired adapter and broadcasting a ssid on the virtual wifi nic. I do this all the time but it's not working on this laptop. I'm wondering if it's a network security thing where I am. I'm going to try from my hotel tonight and report back.

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• New Servers Active Directory and Exchange

  - by user3164638

  I have 3 Dell PowerEdge server, each with 2 quad-core processors. I am going to bring this office out of the stone-age network (P2P, share files on a flash drive, emails through Google, etc) and set up Active Directory and Exchange 2013. Our needs are not that great at the moment - our staff consists of approximately 40 people, and our network may eventually be managed by an external company. We need only one domain for our emails (though we may serve emails for a few other partners domains as well). I was thinking of setting something up like this: Server 1: Primary DC. Active Directory and Exchange on separate virtual machines. Server 2: Redundant of server 1. Server 3: Shared resources, storage, backups, etc. How would you utilize 3 servers for an Active Directory / Exchange setup for a small/medium office? We do have plans to grow, so my solution must be scalable, though I'm not sure that I want to split permissions, though I'd consider it if that was something that could be changed on down the road.

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• Linux will not activate wireless after device has been re-enabled

  - by XHR

  Using a Eee 900A netbook by Asus. By pressing Fn + F2, I can disable or enable the wireless chip on the netbook, a blue LED indicates the status. I've been able to connect to wireless networks just fine with this netbook. However, if the wireless chip ever becomes disabled, I have to reboot to get my network connection back. This generally happens when suspending. For some reason the LED will be off and I have to hit Fn + F2 for it to light up again. However, after doing so, Linux will not reconnect to the network. It simply changes the wireless status from "wireless is disabled" to "device not ready". Even worse, I've recently had issues with the chip being enabled at boot, thus making it nearly impossible to get connected. I've searched around on-line but haven't found much of anything useful on this. This happens on all kinds of different distros including Ubuntu 9.10 Netbook, EeeBuntu 4 beta, Jolicloud and Ubuntu 10.04 Netbook.

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• How do I know if I need a layer 3 switch?

  - by eekmeter

  We currently have a flat network with a bunch of unmanaged switches. I would like to use VLANs to segregate certain users like guests and I would like to use 802.1x. However, I'm not sure if what I need is a layer 3 or a level 2 switch. From what I understand a layer 3 switch does routing between VLANs. I don't think I need this at the moment but as I said I'm not sure since this is all new to me. What else would a layer 3 switch do for me? Our network is relatively small, less than a 100 users. What exactly does a layer 3 switch do that I can't get with a layer 2 switch? When would I need a layer 3?

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• IPv6 scope id issue with IE

  - by eych

  I have an ASP.NET website that works with Firefox because FF doesn't need the % in the scope-id to be encoded (%25). The website also works on the same machine using IE because I can leave out the scope-id. However, to access the website from another machine in the network, I need to add the scope-id to the IPv6 address. For some reason, using the scope-id doesn't allow an authentication cookie to be created, and the website keeps going back to the login page. Anyone using IE7+ to access an ASP.NET website on a network using IPv6 with an encoded %?

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• Port forwarding using IP Tables

  - by Darider

  I have a server with a LAN facing address of 192.168.5.100 (eth0) and another LAN facing address of 192.168.6.6 (eth1). On this server I have a Virtualbox instance of fedora running an apache webserver (on port 8080) with a bridged interface to eth1 on the host server with address of 192.168.6.7 Users on the 192.168.6.x network can access the Webserver on the Vbox instance (192.168.6.7) with no problems. My question is what kind of iptables entries or commands should be made/executed so as to allow for users on the 192.168.5.x network to access the webserver on the vbox instance. (I'm hoping their url can be something like: http://192.168.5.100:8080)

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