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• DrayTek Vigor 2920(n): VPN with VLAN restrictions?

  - by Dirk

  Hi, I'm currently installing a DrayTek Vigor 2920n router in a new office. This router is to be used for 2 seperate companies. For one of these companies, the router has a LAN-2-LAN (VPN) connection to a datacenter configured. The other company should not be able to access this other (VPN-)network. I'm aware of the capability of this router to have VLAN's, but I cannot figure out how to configure the VPN-connection to only be accessible for VLAN0 and not for VLAN1. I know I can also add another router to physically split both networks, but we bought the DrayTek with the idea that it could easily have the VPN-connection available for VLAN0 and not for VLAN1. VLAN1 can easily be in another subnet, that's fine, although, I don't know how to configure that on this DrayTek. Can anyone point me in the right direction? Thanks in advance, Dirk

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• Back up Windows 2008 SBS to iSCSI disk

  - by Farseeker

  I've almost no experience with SBS 2008, so please excuse my noob question! SBS 2008 only has the most basic backup utility built in as far as I can tell (similar to Vista), and it will only back up to physical volumes. I've read that you can set up a batch task to backup to a network volume, but right now I just need to get something deployed ASAP. We have an iSCSI target with plenty of free space. Is it worth backing up to an iSCSI target? Or am I wasting my time? If I need to do a recovery from the iSCSI disk, how would I go about it?

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• Unable to setup ssh tunnel on mac

  - by prashant

  On my office windows XP laptop I use a program called Bitvise Tunnelier to establish ssh tunnel to a in-house MySQL database. In the Tunnelier program I also need to provide address of corporate http proxy server in order to establish tunnel. On my personal mac laptop, I use Cisco Anywhere client to establish a VPN connection to my corporate network. But i'm unable to establish ssh tunnel to mysql database using ssh. How do I specify the proxy server address in the ssh command? As additional info when i'm using office laptop (whether in home or office) I can successfully ping to the server address specified in the Tunnelier program. But i cannot ping the same server using my mac machine (even after connecting via VPN). So basically i'm unable to understand what's going on and what steps i can take to debug this problem .

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• Windows 8 Pro Remote Desktop issue

  - by Mike C.

  I have a weird issue here. I'm running Windows 8 Pro. The client computer is also running Windows 8 Pro. Remote Desktop works when I'm in the same network. I tried connecting using my external IP Address and my DynDNS account, neither works. I disabled Windows Firewall and setup DMZ for my computer on the router, still can't get remote desktop to work. I verified www.canyouseeme.org, port 3389 is open, which is obvious since I'm running DMZ! My ISP, Bell Canada (modem/router: Sagemcom F@st 2864), blocks port 80 and 25, but I don't need those for RDP, do I? The funny thing is RDP rejects the connection instantaneously for my IP or DynDNS while it takes a while for another address. Thank you, Michael

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• what firefall linux distro applicance could track internet usage per device in my home?

  - by GregH

  Hello, Anyone know of a community edition/open source/free firewall/gateway software product that I could install onto an old PC to act as my firewall/gateway/proxy etc, BUT for which it has the power to track internet usage per device in my home. So: a) Mandatory - Track internet usage for devices on my home network on a per device basis (e.g. various PCs/Xbox etc) b) Mandatory - Report/graph would would give a breakdown of internet usage, per device (e.g. IP address), per day. c) Desirable - as in b) above but per hour d) Desirable - realtime graph (e.g. 5 minute measurement intervals or something) that shows current internet usage per device e) Mandatory - Handles all internal<=internet requests for all protocols (e.g. HTTP, HTTPS, xbox etc) f) Mandatory - No explicit settings in clients required - i.e. Transparent Monitoring concept (for both HTTP and non-HTTP traffic like xbox, skype etc) g) Mandatory - easy "appliance" like installation onto a dedicated low spec PC thanks in advance

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• what firefall linux distro applicance could track internet usage per device in my home?

  - by GregH

  Hello, Anyone know of a community edition/open source/free firewall/gateway software product that I could install onto an old PC to act as my firewall/gateway/proxy etc, BUT for which it has the power to track internet usage per device in my home. So: a) Mandatory - Track internet usage for devices on my home network on a per device basis (e.g. various PCs/Xbox etc) b) Mandatory - Report/graph would would give a breakdown of internet usage, per device (e.g. IP address), per day. c) Desirable - as in b) above but per hour d) Desirable - realtime graph (e.g. 5 minute measurement intervals or something) that shows current internet usage per device e) Mandatory - Handles all internal<=internet requests for all protocols (e.g. HTTP, HTTPS, xbox etc) f) Mandatory - No explicit settings in clients required - i.e. Transparent Monitoring concept (for both HTTP and non-HTTP traffic like xbox, skype etc) g) Mandatory - easy "appliance" like installation onto a dedicated low spec PC thanks in advance

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• Remotely push DNS server to client via OpenVPN

  - by wishi

  Hi! When I try to push a DNS server via the OpenVPN server-config I don't get that server to be the first DNS server on the connected client system. It ends up being specified as an alternative DNS server. push "dhcp-option DNS 89.238.75.146" # DNS-Server 1 (local djbdns) To overcome certain network restrictions, if they're at place, I use 443 TCP. - That means that my DNS queries are sent via TCP (if I manually reconfigure the DNS server), which doesn't scale very well from a performance perspective. Are there any kewl solutions for that? Marius

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• Announcing Unbreakable Enterprise Kernel Release 3 for Oracle Linux

  - by Lenz Grimmer

  We are excited to announce the general availability of the Unbreakable Enterprise Kernel Release 3 for Oracle Linux 6. The Unbreakable Enterprise Kernel Release 3 (UEK R3) is Oracle's third major supported release of its heavily tested and optimized Linux kernel for Oracle Linux 6 on the x86_64 architecture. UEK R3 is based on mainline Linux version 3.8.13. Some notable highlights of this release include: Inclusion of DTrace for Linux into the kernel (no longer a separate kernel image). DTrace for Linux now supports probes for user-space statically defined tracing (USDT) in programs that have been modified to include embedded static probe points Production support for Linux containers (LXC) which were previously released as a technology preview Btrfs file system improvements (subvolume-aware quota groups, cross-subvolume reflinks, btrfs send/receive to transfer file system snapshots or incremental differences, file hole punching, hot-replacing of failed disk devices, device statistics) Improved support for Control Groups (cgroups)  The ext4 file system can now store the content of a small file inside the inode (inline_data) TCP fast open (TFO) can speed up the opening of successive TCP connections between two endpoints FUSE file system performance improvements on NUMA systems Support for the Intel Ivy Bridge (IVB) processor family Integration of the OpenFabrics Enterprise Distribution (OFED) 2.0 stack, supporting a wide range of Infinband protocols including updates to Oracle's Reliable Datagram Sockets (RDS) Numerous driver updates in close coordination with our hardware partners UEK R3 uses the same versioning model as the mainline Linux kernel version. Unlike in UEK R2 (which identifies itself as version "2.6.39", even though it is based on mainline Linux 3.0.x), "uname" returns the actual version number (3.8.13). For further details on the new features, changes and any known issues, please consult the Release Notes. The Unbreakable Enterprise Kernel Release 3 and related packages can be installed using the yum package management tool on Oracle Linux 6 Update 4 or newer, both from the Unbreakable Linux Network (ULN) and our public yum server. Please follow the installation instructions in the Release Notes for a detailed description of the steps involved. The kernel source tree will also available via the git source code revision control system from https://oss.oracle.com/git/?p=linux-uek3-3.8.git If you would like to discuss your experiences with Oracle Linux and UEK R3, we look forward to your feedback on our public Oracle Linux Forum.

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• Dual mode 802.11n PCI adapters

  - by Mike Thompson

  I have recently bought a DLink DIR-825 router. It is a dual mode (2.4GZ & 5GHZ) 802.11n wireless access point/router. What is a good PCI adapter to pair with it? DLink appear to only make one dual mode adapter, which is the DWA-160 USB adapter. They don't seem to have a PCI adapter in their range, which seems very strange. Do any of the other network manufacturers make a good dual mode adapter?

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• Fedora vs Ubuntu to host Subversion and Bugzilla over Apache

  - by Tone

  I'm not interested in a flame war of Ubuntu vs Fedora vs whatever. What I am interested in is whether or not I should move my current Ubuntu server to Fedora. I have been able to get Subversion setup and hosted via Apache over https and it works quite well (I'm a .NET guy so this was all new to me). I'm having trouble though with installing Bugszilla - have run into some issues getting all the perl scripts to run successfully so my questions are: 1) Will Bugszilla will install easier on Fedora? Can I just install a package instead of having to download the tar.gz file and untar it, run perl scripts, etc. 2) Is Fedora considered to be a better production server system? I have no desire for a GUI, just need it to host Subversion, Bugzilla over Apache2, and act as a file and print server for my home network.

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• Seattle GiveCamp this Weekend

  - by Stephen.Walther

  Seattle GiveCamp is this weekend (October 19, 2012) on the Microsoft Campus. Donate your time and your programming skills to build software applications (mainly websites) for charities. We need you! Go to the following address and sign up to participate right now: http://seattlegivecamp.com/ We have more than 20 charities participating in this year’s GiveCamp and over 100 volunteers. We need people with all sorts of skills including WordPress, design, ASP.NET, SEO, Mobile, and Project Management skills. If you know how to tweak a WordPress theme or you know how to use Adobe Photoshop or you know Salesforce or Microsoft Access then we really, really need you this weekend. This is a great event to network with other developers, show off your ninja programming skills, and help some great charities. Be prepared to show up at Friday night and start working in a team to write some great code. You can stay until Sunday night for the full event or you can leave early (in previous events, some developers did marathon coding sessions for multiple days straight – but those guys are insane). My wife, Ruth Walther, is the director of this year’s GiveCamp. She’ll be there and I’ll be there. I hope to see you at GiveCamp!

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• TCP Zero Window with no corresponding Window Update

  - by Gandalf

  I am trying to debug a network issue and am using Wireshark and tcpdump to grab packets from my server. I have one client application that is grabbing all my available connections and then holding them, trying to send A LOT of data and essentially causing an unintentional DOS attack. While debugging I notice that I see my server sending "Window Closed" and "Zero Window" TCP packets - but never sending any "Window Update" packets. I am guessing this is why the client never lets go of the connections (it still has more data to send and is waiting). Has anyone ever seen this type of behavior before? Let's not get into the reasons why I haven't set up an iptables rule to limit concurrent connections (yeah I know). I also recently changed the MTU from 1500 to 9000 - could this have such a negative effect? (Linux) Thanks.

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• Stupid Geek Tricks: Change Your IP Address From the Command Line in Linux

  - by Taylor Gibb

  Almost everybody can figure out how to change their IP address using an interface, but did you know you can set your network card’s IP address using a simple command from the command line? Changing Your IP From the Command Line in Linux Note: This will work on all Debian based Linux Distro’s. To get started type ifconfig into the terminal and hit enter, take note of the name of the interface that you want to change the settings for. To change the settings, you also use the ifconfig command, this time with a few parameters: sudo ifconfig eth0   192.168.0.1 netmask 255.255.255.0 That’s about all all you need to do to change your IP, of course the above command assumes a few things: The interface that you want to change the IP for is eth0 The IP you want to give the interface is 192.168.0.1 The Subnet Mask you want to set for the interface is 255.255.255.0 If you run ifconfig again you will see that your interface has now taken on the new settings you assigned to it. If you wondering how to change the Default Gateway, you can use the route command. sudo route add default gw 192.168.0.253 eth0 Will set your Default Gateway on the eth0 interface to 192.168.0.253. To see your new setting, you will need to display the routing table. route -n That’s all there is to it. How to Play Classic Arcade Games On Your PC How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8

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• Folder redirection save times are awful slow

  - by wbmeu

  I recently set up folder redirection for Documents on Server 2008, but it's painfully slow at the moment. My users are all using Visual Studio 2010, and a save takes 20-30 seconds (whereas it used to take 2 seconds locally). I understand this is because they are being saved to the server, and that takes time (though I did think it would be faster over a gigabit link, with servers on the same network). I enabled offline files on the share, set the option to All files or folders, and enabled Optimize for performance. I thought that this would pull all the files down locally (which I think it did), allow local editing of said files, synchronizing them quietly in the background from time to time (which it does not do - saves right to the share). Is there any way I can speed this process up a bit? Any other tweaks I can do?

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• Unable to remove broken Exchange 2003 installation (SBS 2003)

  - by Austin ''Danger'' Powers

  We have a non-functional Exchange 2003 installation on our SBS 2003 server that I am trying to uninstall. So far we have never used, and will never use, Exchange on this server- all we need is to remove it from the system (as it is installed on a partition which we want to merge with the main data partition to increase network storage capacity). Attempting to remove it using Add/Remove Programs produces the following error: When doing a search in ADUC to see which users still have a mailbox associated with them, it seems to only be the domain administrator account: As the Exchange installation is broken, it is not possible to run either System Manager or Exchange 5.5 Administrator to make mailbox changes. How can I forcibly remove a mailbox (which does not need to be salvaged or backed up), to allow the uninstall of Exchange to proceed? Any ideas would be appreciated!

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• Looking for detailed Instructions on building a DIY NAS

  - by Kaushik Gopal

  I'm looking for good links with detailed instructions on how to build a DIY NAS (Network Access Storage). I'm planning on doing it cheap (old PC config + open source software). I did a fair bit of searching and found these links (so please suggest others). While these links are great they delve more on the hardware side. I'm looking for more instructions in the software side. Ubuntu Setting up a Home NAS DIY NAS Smackdown How to Configure an $80 File Server in 45 Minutes FreeNAS Build a NAS Device With an Old PC and Free Software Build Your Own NAS Device

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• Windows 7 won't read from NAS on LAN

  - by Alfy

  I've got a Linkstation NAS drive on a local network. Having just got a new laptop with Windows 7 Home Professional, I can no longer read anything of the drive. I've tried accessing the drive using \192.168.1.55\share, using ftp programs such as WinSCP, filezilla and even using firefox to hit ftp://192.168.1.55. The really annoying thing is that through these methods I can see the files on the drive, counting out any kind of connection issues. I can navigate through the NAS file system, but as soon as I try and copy a file off the NAS, things just stop working. Accessing the drive through a Windows XP machine works fine. So far I've tried: Disabling firewalls Adding the LmCompatibilityLevel key to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa Using the 40 - 56 bit encryption instead of the 128 bit. Has anyone got any suggestions of what I can check or try? This is driving me crazy and I'm totally out of ideas?

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• JavaOne Latin America Underway

  - by Tori Wieldt

  JavaOne Latin America started officially today, but lots of networking has already happened. Last night some JUG leaders, Java Champions, and members of the Oracle Java development and marketing teams had dinner together. The conversation ranged from the new direction of JavaFX to how to improve JUG attendance. Maricio Leal shared the idea some Brazilian JUGs have of putting Java Evangelists and experts on a boat and having them visit JUGs on cities along the Amazon river.  We discussed ideas, and shared dessert pizza. It was the perfect community get together! If you see Brazilian Java Man Bruno Souza, ask him what he is bringing to the party.Today, at JavaOne Latin America, all the sessions were full, and developers were spilling into the hallways. Session content was selected with the help of 14 Java thought leaders from Latin America. JavaOne Program Committee Chair, Sharat Chander, said "I'm thrilled that at this JavaOne over half of the content is coming from the community." Between sessions, developers take advantage of the Oracle Technology Network lounge to grab a snack and use their laptops.  OTN LoungeIt promises to be a great JavaOne.

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• Custom Icon for NFS Volume Mount - Possible for OSX?

  - by James

  We are naming our various network volumes after Planets! I renamed the Mercury.icns icon, to .VolumeIcon.icns and copied it over to the mount point folder of the NFS server. So far remounting the NFS share does not seem to employ this icon. Looking on the NFS server, there appears to be two VolumeIcon files. Can someone tell me what I am doing wrong? Permissions? Do I need a .DS_Store file there as well?? It shouldn't be this hard! EDIT: Should have mentioned, the NFS server is Ubuntu 12.04.1. NOT an OSX server.

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• How to find last login user on given computer name on AD

  - by user1215305

  If anyone could help, it would be appreciated. I am trying to audit the network. I have list of computers that are active in last 3 months in domain. I have little script that run when user login to the computer and writes the file with computer name. I have 39 computers and only on 23 computers the script was run. So I am chasing up with other 16 computers. My question is how can I find out who has last login to the given computer name? Many thanks in advance

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• Exim4 delivery to parent domain.

  - by bruor

  I've set up an ubuntu server 9.1 system with exim4 as a relay for e-mail on my network. I've told exim that it is part of a subdomain: sub.domain.com I can test and deliver messages fine to my gmail accounts. I cannot get exim4 to sent messages to [email protected] though. The error received in the logs shows that exim thinks it should be delivering messages for domain.com to localhost instead of the actual MX for domain.com Is there an easy way to modify the debconf update-exim4.conf.conf so that is has the relay_to_domains capability?

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• OSX: DNS records won't change?

  - by Marko

  I've had two sites on my local host and have had mysite1.local and mysite2.local in my /etc/hosts file to pointing in my localhost. Now, I moved those sites into my homeserver (Ubuntu, Local network) and made changes to hosts file + also in /private/etc/hosts is same. 192.168.0.50 mysite1.local 192.168.0.50 mysite2.local I flushed my dnscache sudo dscacheutil -flushcache rebooted machine, reseted safari but still no changes.. Still if I try to go either mysite1.local or mysite2.local it is pointing to localhost?!? What could be the problem?? OS is Snow Leopard 10.6.8

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• is it possible to get IP address of a wifi that you are not connected to

  - by coltonon

  Just like the question states. Is it somehow possible to get the IP address of a network that you don't have access to? For example, if you click the little wifi button on your task bar, and highlight your cursor over one of the options, you get some info. But your external IP address is actually the address of the router, isn't it? Which would mean you would have to connect to the wifi, and then the router to get an IP address, correct? I realy just want a simple answer: No or Yes and here's how

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• Log centralization, display, transport and aggregation at scale v2

  - by Eric DANNIELOU

  This is a duplicate question of Log transport and aggregation at scale and http://stackoverflow.com/questions/1737693/whats-the-best-practice-for-centralised-logging, but the answers might differ now : The softwares described in 2009 may have changed since (for example Octopussy evolved from version 0.9 to 1.0.5). Rsyslog has become the default on most linux distro. Requirements have changed (security, software configuration management, ...). I'd like to ask the following questions : How do you centralize, display and archive system logs? How would you like to do it now if you had to? Most linux distro use rsyslog nowadays, which can provide reliable log transport. But some older unices, network devices and maybe windows box still use old udp rfc-style transport. How did you manage to get reliable transport? Storing logs for a few months can represent a huge amount of disk space. How do you store them? rdbms? Compressed and encrypted text files?

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• One domain hiding two servers

  - by George DSeas

  For our SaaS web-app we have two identical servers in two geographically separated data centers. FOO_1 is the production server and does real-time (MySQL master-slave) replication to its backup F00_2. We want our users to always go to THEFOO.COM which somehow points to the production server. So even if FOO_1 dies, we can just switch THEFOO.COM to redirect to FOO_2 so the failure is transparent. This switch can be manual or automatic but without failback (if FOO_1 somehow becomes available again). Is there a way to do this with DNS? I am getting stuck with ANAME and CNAMEs configuration. We don't use sub-domains, just straight domains. If not, what are other options? Does it make sense to just have a web server at LOVELY_FOO.COM and just redirect all traffic? I also looked at load balancers but didn't see a solution for across data centers/network providers.

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