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  • Is this an apt-get issue or network issue?

    - by zharvey
    I just installed my first Ubuntu server (12.04) instance and immediately am noticing a few things: Running apt-get install or update fails (see below) Running ifconfig produces peculiar IP addresses starting with 10.x.x.x and my router does not see the server at all in its "Attached Devices" page (its a consumer grade Netgear) When I run apt-get I get 50+ of the following errors: Failed to fetch <some-http-url. Temporary failure resolving <blah.ubuntu.com I read up on this error for 12.04, and found some similar posts on this forum and on serverfault that recommended going into /etc/resolv.conf and adding an entry: nameserver 8.8.8.8 To my surprise, I found that /etc/resolve.conf was a symlink pointing to somewhere else and I had to delete it first, then create a new one with the entry indicated above. I restarted the server and tried running apt-get again: same results. How do I start diagnosing the problem (I'm a relatively new Linux/Ubuntu user)? Additional details that may help: This is actually a virtual machine running as a VirtualBox guest OS The physical host that is running this VM is my laptop which has a wireless connection; I'm wondering if (somehow) the laptop is getting the network wirelessly, but perhaps either the VBox VM and/or the Ubuntu server OS isn't configured for wireless and so nothing is "getting through"? Thanks in advance for any pointers! Edit: Here is a snapshot of my VM's Network settings (only Adapter 1 has any information populating its fields, so I assume my VM has only 1 adapter): Here is the output when I run ifconfig from the terminal: And here is the output when I run route from the terminal: Running ping google.com:

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  • Is what someone publishes on the Internet fair game when considering them for employment as a programmer?

    - by Jon Hopkins
    (Originally posted on Stack Overflow but closed there and more relevant for here) So we first interviewed a guy for a technical role and he was pretty good. Before the second interview we googled him and found his MySpace page which could, to put it mildly, be regarded as inappropriate. Just to be clear there was no doubt that it was his page (name, photos, matching biographical information and so on). The content was entirely personal and in no way related to his professional abilities or attitude. Is it fair to consider this when thinking about whether to offer them a job? In most situations my response would be what goes on in someone's private life is their own doing. However for anyone technical who professes (implicitly or explicitly) to understand the Internet and the possibilities it offers, is posting things in a way which can so obviously be discovered a significant error of judgement? EDIT: Clarification - essentially it was a fairly graphic commentary on porn (but of, shall we say, a non-academic nature). I'm actually more interested in the general concept than the specific incident as it's something we're likely to see more in the future as people put more and more of themselves on-line. My concerns are not primarily about him and how he feels about such things (he's white, straight, male and about the last possible victim of discrimination on the planet in that sense), more how it reflects on the company that a very simple search (basically his name) returns these things and that clients may also do it. We work in a relatively conservative industry.

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  • Ubuntu 12.04 Server ping gateway responds with destination host unreachable

    - by blckblttkd
    I consider myself fairly avid with Ubuntu and Linux, but this one has me stumped. I built up a Xen Server using Ubuntu 12.04 as the base operating system. It has multiple domUs running on it. My home network has a statically defined network where I got all the network connectivity going peachy. The server was moved to a permanent home this morning. So, the network configuration on the main system had to change. Again, another static network, but now I can't ping the upstream gateway from the host. As the VMs use this NIC over a bridge, they too are broken. Ping responds with "destination host unreachable." I simplified the networking down to a simple static network as seen below (no bridge or anything) just to get it to work. Here's the contents of my /etc/network/interfaces file: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 216.7.188.228 gateway 216.7.188.225 netmask 255.255.255.240 broadcast 216.7.188.255 network 216.7.188.0 dns-nameservers 8.8.8.8 8.8.4.4 Here's the contents of route -n 0.0.0.0 216.7.188.225 0.0.0.0 UG 100 0 0 eth0 216.7.188.224 0.0.0.0 255.255.255.240 U 0 0 0 eth0 And the results of pinging the gateway: PING 216.7.188.225 (216.7.188.225) 56(84) bytes of data. From 216.7.188.228 icmp_seq=1 Destination Host Unreachable From 216.7.188.228 icmp_seq=1 Destination Host Unreachable From 216.7.188.228 icmp_seq=1 Destination Host Unreachable Again, this worked in one network flawlessly (obviously with different parameters in the interfaces file). I did try using eth1 (as there are two NICS on the server (in case the MAC address got flipped on bootup). No success there. Yes, the cable is in the right port now :) Any thoughts? I appreciate the help!

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  • How to make routes on a windows 7 laptop persistent?

    - by askvictor
    I have a number of (windows 7) laptops that normally connect via wireless. We also have a wired network for special purposes. When one of these laptops plugs in to the wired network, at the moment, it makes the wired network the default route. Instead, I would like it to keep the wireless network the default, and route only 10...* through the wired. I can achieve this with: route delete 0.0.0.0 IF 22 route add 10.0.0.0 ... IF 22 (where IF 22 is the wired network interface). But how can I get this to stick? Currently, if the wired network is unplugged then re-plugged, it grabs the default route again. So I want a way of making the wireless network not get the default route, and to make the 10...* network persistent. Is there a hook to run commands after a network connection is established in windows? In linux I would use post-up hooks.

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  • Is it possible to use 3G internet for a TCP/IP game server?

    - by Amit Ofer
    I'm working on a turned based multiplayer android game with a friend. I started working on the game server and client using socket programming. I found a few tutorials on how to implement a basic chat on android and I started extending that example to suit my needs. Basically the game is really simple and the communication only include sending a few string from the client to the server every turn and sending the calculated scores back to all the clients after each turn. the idea is that one of the players creates the game and thus initialize the server, and each player connects to this client using ip. I tried this solution and it seems to work great when all the players are using the same wifi connection or by using router port forwarding. The problem is when trying to use 3G internet for the server, I guess the problem is that 3G ip address isn't global and you can't use port forwarding there, correct me if I'm wrong here. Is there a way to overcome this issue? or the only solution is to limit my game to wifi only or think of a different solution than the standard socket programming solution? I.E web server etc. what do you think would be the best approach here? Thanks.

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  • Wireless connected but internet not working, modem is fine because I'm typing over wifi on my android

    - by Sandro Livaja
    I can't connect to the Internet in 11.10. I tried switching my wifi card to another USB slot but nothing changed. Is it possible that the card is able to connect while not being able to receive packages? $ ifconfig eth0 Link encap:Ethernet HWaddr 40:61:86:35:11:b0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:43 Base address:0x6000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) wlan0 Link encap:Ethernet HWaddr 74:ea:3a:8c:d5:5c inet addr:192.168.2.5 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::76ea:3aff:fe8c:d55c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:12 errors:0 dropped:0 overruns:0 frame:0 TX packets:102 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1209 (1.2 KB) TX bytes:15329 (15.3 KB)

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  • Server 2008 Active directory file sharing Restriction

    - by Usman
    My network scenario is: Two location connected each other through Wireless towers. 1st network ip address are 10.10.10.1 to 10.10.10.150 2nd network ip address are 10.10.10.200 to 10.10.10.254 Both location using their own ACTIVE DIRECTORY (MS SERVER 2008) and share their data with each other network through file sharing. My Problem is that every single client can explore the whole network. by simply typing \computername. i want to implement some restriction on network regarding file sharing. i want to restrict 1st Network Clients to open 2nd network Computer or server. Is there have any Group Policy or Folder permission scenario that i implement on my both network..

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  • What are some internet trends that you've noticed over the past ~10 years? [closed]

    - by Michael
    I'll give an example of one that I've noticed: the number of web sites that ask for your email address (GOOG ID, YAHOO! ID, etc.) has skyrocketed. I can come up with no legitimate reason for this other than (1) password reset [other ways to do this], or (2) to remind you that you have an account there, based upon the time of your last visit. Why does a web site need to know your email address (Google ID, etc.) if all you want to do is... download a file (no legit reason whatsoever) play a game (no legit reason whatsoever) take an IQ test or search a database (no legit reason whatsoever) watch a video or view a picture (no legit reason whatsoever) read a forum (no legit reason whatsoever) post on a forum (mildly legit reason: password reset) newsletter (only difference between a newsletter and a blog is that you're more likely to forget about the web site than you are to forget about your email address -- the majority of web sites do not send out newsletters, however, so this can't be the justification) post twitter messages or other instant messaging (mildly legit reason: password reset) buy something (mildly legit reasons: password reset + giving you a copy of a receipt that they can't delete, as receipts stored on their server can be deleted) On the other hand, I can think of plenty of very shady reasons for asking for this information: so the NSA, CIA, FBI, etc. can very easily track what you do by reading your email or asking GOOG, etc. what sites you used your GOOG ID at to use the password that you provide for your account in order to get into your email account (most people use the same password for all of their accounts), find all of your other accounts in your inbox, and then get into all of those accounts sell your email address to spammers These reasons, I believe, are why you are constantly asked to provide your email address. I can come up with no other explanations whatsoever. Question 1: Can anyone think of any legitimate or illegitimate reasons for asking for someone's email address? Question 2: What are some other interesting internet trends of the past ~10 years?

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  • What is a good layout for a somewhat advanced home network and storage solution?

    - by Shaun
    My home network/storage needs are changing and I am searching for some opinions and starting points on what a good network/storage layout would be that can serve my needs for a few years into the future. I think I have a decent starting point for equipment, but I am also willing to invest fairly heavily in a solution that can last me for a while. I am a bit of a tech nerd and I have a moderate tolerance for setup of the solution. I would prefer if maintenance of the system is somewhat low once it is setup, but I am willing to accept some tradeoffs. Existing equipment: Router - Netgear WNDR3700 (gigabit) Router - DLink Gamerlounge DGL-4300 (gigabit) Switch - 16 port Trendnet green switch (gigabit) Switch - 5 port Trendnet green (gigabit) Computer - i7-950 office computer (gigabit ethernet) Computer - Q6600 quad core media center, hooked up to TV, records shows (gigabit ethernet) Computer - Acer 1810T ultraportable laptop (gigabit and N ethernet) NAS - Intel SS4200-E (gigabit) External hard drive - 2TB WD Green drive (esata) All kinds of miscellaneous network connected TV, Bluray, Verizon network extender, HDhomerun TV tuners, etc. Requirements: -Robust backup solution for a growing collection of huge family picture files and personal files, around 1.5TB. (Including offsite backup) -Central location for all user's files, while also keeping them secure from each other. -Storage for terabytes of movie backups and recorded TV, and access to them from all computers (maybe around 4TB eventually) -Possibility to host files to friends and family easily Nice to have: -Backup of terabytes of movie backups Intriguing possibilities: -Capability to have users' Windows desktops and files look the same from all network computers I am not sure if the new Windows Home Server 2011 would fit into this well, if I need a domain server, how best to organize my backups, or how to most effectively use RAID. Currently I am simply backing up all computers to a RAID 1 on the NAS box, which I was thinking could prevent a situation where I reach for a backup and find that the disk is corrupt. One possibility that I am thinking about now is simply using my media center PC with a huge RAID of hard drives on which all files are stored. Pseudo-backup of all files would be present because of the RAID, but important files would also be backed up off site via carrying hard drives to work. But what if corruption seeps into the files and the corrupted data is then backed up? Does RAID protect against this? I really want to take next to zero risks with the irreplaceable files. I can handle some degree of risk with the movies and other files. I'm looking for critiques on this idea as well as other possibilities. To summarize, my goal is high functionality, media capable, and robust backup of irreplaceable files.

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  • No Internet access while being connected to VPN using Cisco VPN Client 5.

    - by szeldon
    Hi, I have an access to corporate VPN using Cisco VPN Client 5.0.00:0340, but when I'm connected to it, I don't have an Internet access. I'm using Windows XP SP3. As it was suggested here http://forums.speedguide.net/showthread.php?t=209167 , I tried to enable "Allow local LAN Access" but it doesn't work. I also tried a second solution - deleting entry using "route" command, but it didn't help. I used "route delete 192.168.100.222". It's a third day of my attempts to solve this issue and I don't have an idea what else to do. I'm not very experienced in VPN stuff, but I know something about networking. Basing on my knowledge, I think that it's theoretically possible to achieve Internet access using my local network and only corporate stuff to be routed using VPN connection. I think that theoretically this should look like this: every IP being inside by corporation - VPN interface IP every other IP - my ethernet interface I've tried many possibilities of how to change those routes, but neither of them work. I'd really appreciate any help. My route configuration before connecting to VPN: =========================================================================== Interface List 0x1 ........................... MS TCP Loopback interface 0x2 ...00 c0 a8 de 79 01 ...... Atheros AR5006EG Wireless Network Adapter - Teefer2 Miniport 0x10005 ...02 00 4c 4f 4f 50 ...... Microsoft Loopback Card 0x160003 ...00 17 42 31 0e 16 ...... Marvell Yukon 88E8055 PCI-E Gigabit Ethernet Controller - Teefer2 Miniport =========================================================================== =========================================================================== Active routes: Network Destination Netmask Gateway Interface Metrics 0.0.0.0 0.0.0.0 192.168.101.254 192.168.100.222 10 10.0.0.0 255.255.255.0 10.0.0.10 10.0.0.10 30 10.0.0.10 255.255.255.255 127.0.0.1 127.0.0.1 30 10.255.255.255 255.255.255.255 10.0.0.10 10.0.0.10 30 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1 192.168.100.0 255.255.254.0 192.168.100.222 192.168.100.222 1 192.168.100.222 255.255.255.255 127.0.0.1 127.0.0.1 1 192.168.100.255 255.255.255.255 192.168.100.222 192.168.100.222 1 224.0.0.0 240.0.0.0 10.0.0.10 10.0.0.10 3 224.0.0.0 240.0.0.0 192.168.100.222 192.168.100.222 1 255.255.255.255 255.255.255.255 10.0.0.10 10.0.0.10 1 255.255.255.255 255.255.255.255 192.168.100.222 192.168.100.222 1 255.255.255.255 255.255.255.255 192.168.100.222 2 1 Default gateway: 192.168.101.254. =========================================================================== My route configuration after connection to VPN: =========================================================================== Interface List 0x1 ........................... MS TCP Loopback interface 0x2 ...00 c0 a8 de 79 01 ...... Atheros AR5006EG Wireless Network Adapter - Teefer2 Miniport 0x10005 ...02 00 4c 4f 4f 50 ...... Microsoft Loopback Card 0x160003 ...00 17 42 31 0e 16 ...... Marvell Yukon 88E8055 PCI-E Gigabit Ethernet Controller - Teefer2 Miniport 0x170006 ...00 05 9a 3c 78 00 ...... Cisco Systems VPN Adapter - Teefer2 Miniport =========================================================================== =========================================================================== Active routes: Network Destination Netmask Gateway Interface Metrics 0.0.0.0 0.0.0.0 10.251.6.1 10.251.6.51 1 10.0.0.0 255.255.255.0 10.0.0.10 10.0.0.10 30 10.0.0.0 255.255.255.0 10.251.6.1 10.251.6.51 10 10.0.0.10 255.255.255.255 127.0.0.1 127.0.0.1 30 10.1.150.10 255.255.255.255 192.168.101.254 192.168.100.222 1 10.251.6.0 255.255.255.0 10.251.6.51 10.251.6.51 20 10.251.6.51 255.255.255.255 127.0.0.1 127.0.0.1 20 10.255.255.255 255.255.255.255 10.0.0.10 10.0.0.10 30 10.255.255.255 255.255.255.255 10.251.6.51 10.251.6.51 20 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1 192.168.100.0 255.255.254.0 192.168.100.222 192.168.100.222 10 192.168.100.0 255.255.254.0 10.251.6.1 10.251.6.51 10 192.168.100.222 255.255.255.255 127.0.0.1 127.0.0.1 10 192.168.100.255 255.255.255.255 192.168.100.222 192.168.100.222 10 213.158.197.124 255.255.255.255 192.168.101.254 192.168.100.222 1 224.0.0.0 240.0.0.0 10.0.0.10 10.0.0.10 30 224.0.0.0 240.0.0.0 10.251.6.51 10.251.6.51 20 224.0.0.0 240.0.0.0 192.168.100.222 192.168.100.222 10 255.255.255.255 255.255.255.255 10.0.0.10 10.0.0.10 1 255.255.255.255 255.255.255.255 10.251.6.51 10.251.6.51 1 255.255.255.255 255.255.255.255 192.168.100.222 192.168.100.222 1 255.255.255.255 255.255.255.255 192.168.100.222 2 1 Default gateway: 10.251.6.1. ===========================================================================

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  • How can I bridge a VM to a remote network?

    - by asciiphil
    I have a system running QEMU/KVM (via libvirt). One of its VMs needs to have a presence on a subnet that is not local to the VM host. I have a Linux system on the remote subnet. Is there a way to set up some sort of tunneled bridge to cause the VM to appear present on the remote system? This will be a temporary situation (hopefully just until the VM owner can configure their system) and network performance and long-term maintainability aren't really issues. To give some more concrete information: My VM host has IP address 192.168.54.155/24. The VM has IP address 192.168.65.71/24. I have a remote system at 192.168.65.254/24. Both the VM host and remote system are running Scientific Linux 6.5. I do not control the network or routing in between the VM host and remote system. I do not have access to the guest OS on the VM. I would like traffic to the VM's IP address to end up at the VM even though its host isn't directly connected to the appropriate network. I've tried using iproute2's tunnelling, but Linux won't let me add a tunnel to a bridge. I've considered using some sort of iptables mangling to route traffic over the tunnel and make the VM think it's on the right network, but I'm not sure whether there are better approaches. What's the best way to accomplish this hack?

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  • Can you make a Windows network default user profile NOT apply to a certain operating system?

    - by Jordan Weinstein
    I would like to create a network Default User account for Windows 7 only. This is on a Windows 2003 domain with servers from Windows 2000 to 2008 R2 and Windows XP on workstation side. We're about to do a full migration to Windows 7 and I'd like to start using the network default user profile functionality as we're not migrating user profiles over. Want everyone to start clean. I followed the simple steps from this page: http://support.microsoft.com/kb/973289 under the heading: "How to turn the default user profile into a network default user profile in Windows 7 and in Windows Server 2008 R2" but the problem is that profile would then apply to a new user\admin logging into a 2008 server. That's no good. Anyone have any ideas on how to limit what actually uses that network profile? I was thinking about setting deny permissions for all my admin\service accounts on that "\\dcserver\netlogon\Default User.v2" folder but then it might be timing out and cause other problems. Haven't tried yet as that seems like a bad way of making this work.

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  • Windows 7 wireless not seeing any networks

    - by jkohlhepp
    I think I have managed to confuse Windows 7. When I did the install, I had the network cable plugged in to my router, but the wireless card was also enabled. During the install, Windows 7 seemed to see my wireless network and even asked me for the WEP key. I know that it used the WEP key because I initially entered an invalid one and it gave me an error. Then the network said "SoAndSoWireless Connected". However, when I unplug or disable my wired network card, then I have no internet, and it can't see any networks. When I plug in the wired network card, it says "SoAndSoWireless Connected". Under Network and Internet Network Connections I have "Local Area Connection" and "Wireless Network Connection". The wired one's status is "SoAndSoWireless" and the wireless status is "Not Connected". Also, the wireless connection can't seem to see any other wireless networks in the area and I know there are tons. My neighbors have several. I've somehow seemingly confused Windows 7 into thinking that my wired network card is my wireless card or something. Any ideas on how to un-confuse it? This is a desktop machine by the way, if it matters. EDIT: Ah, I think part of the problem is that I named my network accidentally the same as the name of the wireless network being broadcast by the wireless router. So that might be why it says that name on the hard-wired connection. Perhaps the drivers just are completely not working for the wireless card. Thanks, ~ Justin

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  • Why can't I connect to computers on my network using our external IP address?

    - by Kivin
    My home network is serviced by an ADSL line. The modem is in bridged mode. The router performs the PPPoE. Three computers are connected to the router: two wired Windows 7 boxes and a Ubuntu Linux box over wifi. The computers are hosting various forms of services including FTP and HTTP. The router has port forwarding mapped from the relevant ports to the reserved IP addresses for the computers. If I attempt to connect to a server inside the network, such as ftp://67.xx.xxx.xxx from inside the network, the request times out. However if I connect using the internally mapped address, such as ftp://192.168.0.100, all is well. This is a nuisance for setting up software, especially on the laptop which needs to be able to phone home from anywhere, and I just don't have enough expertise with networking to know why this is occurring to even have a clue whether it can be solved or not. edit: It should be noted that the servers can be accessible outside the network - say, at the starbucks across the street - perfectly fine, using the ISP provided address and the appropriate port.

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  • WTH? Upgrading Ubuntu 9.10 to 10.04 Problem: No Internet Connection?

    - by damx
    Earlier today I tried upgrading my Ubuntu 9.10 Karmic Kaola from the update manager. (FYI: all 9.10 updates were applied prior to this) Everything was going well downloading until I got an error dialog informing me that some software packages weren't downloaded because of an Internet connection. Would say it was halfway thru. Anyway, Was told that the software packages that it did download, however, would kept and I figure it's not a big deal. Just run it again. But first ran Firefox to verify my connection as I haven't had any connection problems. But my internet connection was/is fine as evident by this posting. With that cleared, I ran the update manager again, clicked on "Upgrade" and this time I received "Could not download the release notes. Please check your internet connection" huh? This is my first time dealing w/ Ubuntu and my first upgrade so I am hoping someone can help. Not sure what the problem can be. I am can surf the web w/ no problems. Please help. PS: There was no installing at any point. Just downloading. PSS: The software it managed to download the first time around is now visible in the update manager but don't think I should install as I see in the compiz description it's for v1:0.8-4-0ubuntu2 I figure it's designed for 10.04 and might ruin things further if I install

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  • Upgrading Ubuntu 9.10 to 10.04 Problem: No Internet Connection?

    - by damx
    Earlier today I tried upgrading my Ubuntu 9.10 Karmic Kaola from the update manager. (FYI: all 9.10 updates were applied prior to this) Everything was going well downloading until I got an error dialog informing me that some software packages weren't downloaded because of an Internet connection. Would say it was halfway thru. Anyway, Was told that the software packages that it did download, however, would kept and I figure it's not a big deal. Just run it again. But first ran Firefox to verify my connection as I haven't had any connection problems. But my internet connection was/is fine as evident by this posting. With that cleared, I ran the update manager again, clicked on "Upgrade" and this time I received "Could not download the release notes. Please check your internet connection" This is my first time dealing with Ubuntu and my first upgrade so I am hoping someone can help. Not sure what the problem can be. I can surf the web with no problems. PS: There was no installing at any point. Just downloading. PSS: The software it managed to download the first time around is now visible in the update manager but don't think I should install as I see in the compiz description it's for v1:0.8-4-0ubuntu2 I figure it's designed for 10.04 and might ruin things further if I install.

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  • how does a computer know which IP address will route information to the internet? [closed]

    - by JohnMerlino
    Possible Duplicate: How does IPv4 Subnetting Work? For example, I have a computer with a Network Inteface Card (NIC) which is an Ethernet card that is connected by Ethernet cables to a router. There is also another computer with a cable that is connected in another port of the router. This is a Belkin router operating over an Ethernet in the LAN. When I connect to serverfault.com, it maps to an IP address. My computer now has a task of connecting to that IP address. But my computer itself cannot connect to the serverfault IP address. Only the router can. So the task of my computer is to find the IP address associated with the node that will do the routing to the public internet. How does my computer know that a particular IP address in the local network belongs to the router, and is not another computer connected to the network? Is this information configured manually in the operating system itself? Somehow my computer must know that it must send ethernet frames to the router with the expectation that the router will then send the packet to a public IP. How does it know to send it to the router? Is the router's ip address stored in my computer like a key/value pair e.g. "router"="192.168.2.6", so that when I put a public ip address, my computer first knows to connect to 192.168.2.6?

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  • How do i set up a fully featured small business network?

    - by JoshReedSchramm
    This has the possibility to be a very large question but I recently acquired a few rack mount servers and the hardware necessary to run them. Unfortunately I'm a programmer with very little understanding of how to set up a good working network so I'm hoping someone on here might be able to help. What I want to do is run a domain with a series of subdomains which would all be externally accessible. The setup would live inside my home and my internet connection is your run of the mill cable model (which means a dynamic IP) I want to be able to set up a couple site, specifically: www.mycompany.com (mycompany.com with no subdomain would redirect to this) build.mycompany.com (for my continuous integration server) ruby.mycompany.com (for ruby projects) win.mycompany.com (for windows project) etc. Additionally this is still my home network so our personal machines need to be able to get on via wifi with at least the same security we have now through an out of the box router from best buy. I'm thinking i need a DNS server, DHCP server and one of those would run either no-ip or dyndns to accommodate the dynamic ip. I don't necessarily need mail but it might be helpful to have some sort of mail server i could use for testing, it doesn't need to get out to the greater internet though. So how do i set up this kinda of network? tl;dr Need to know how to set up your standard office style network in my home off my normal consumer level cable modem connection.

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  • How can I debug solutions in Visual Studio 2010 from a network share?

    - by alastairs
    I've recently got a new Mac laptop and am running VS2010 in a Parallels virtual machine. It's mostly working out well for me, but I'm having some problems with debugging specific project types, related to the fact that the projects are being accessed via a network share. Test projects don't run because the test runner can't load the tests' DLL. Web projects fail to run in the Visual Studio mini web server, throwing the following exception: 'An error occurred loading a configuration file: Failed to start monitoring changes to path\to\web.config'. I've spent the evening trawling the web with little luck on this. After reading these two posts, I tried out the usual CasPol changes, but then found this post from one of the early VS2010 betas indicating that CasPol is no longer needed/supported in .NET 4.0 and VS2010. The network share is accessible via both a mapped drive and the UNC path. The virtual machine runs its applications under the administrator account, which appears to have all the necessary permissions on the network share to create, read, write and delete files and folders. I say "appears to have" as I can't view the Security Properties of the appropriate folder via Explorer: the Security tab just isn't present. Has anyone managed to successfully load and debug web and test projects from a network share in VS2010?

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  • How to route between 2 networks with a server with 2 network cards?

    - by LumenAlbum
    This is the first time I am faced with routing and it seems I have hit a dead end. I have the following scenario: client1: 192.168.1.10 255.255.255.0 gateway: 192.168.1.100 DNS server: 192.168.1.100 client2: 192.168.1.20 255.255.255.0 gateway: 192.168.1.100 DNS server: 192.168.1.100 server (Windows Server 2008 R2 with enabled RAS & Routing Services) network card 1 (connected to a switch along with the clients) 192.168.1.100 255.255.255.0 DNS server: 127.0.0.1 network card 2 (connected to the router) 192.168.2.100 255.255.255.0 gateway: 192.168.2.1 DNS server: 127.0.0.1 (DNS forwarding to 192.168.2.1) ISP router (with connection to internet) 192.168.2.1 Now in this scenario I have tried to route traffic from the 192.168.1.0/24 network with the clients to the 192.168.2.0/24 network with the routers to connect them to the internet. However, no matter what I do I get no positive ping to the router 192.168.2.1. Ping from 192.168.168.1.10 to 192.168.1.20: Success to 192.168.1.100: Success to 192.168.2.100: Success to 192.168.2.1: not reachable The routing table contains the 2 routes 192.168.1.0 and 192.168.2.0 as directly connected. Does anyone know where the routing fails? I have searched different forums but mostly found nothing relevant. One post however pointed out that in a similar situation the problem was that the router doesn't know the way back and the internet router would need a static route back to the first router. If that really is the case, I take it there is no solution with my equipment, because the standart ISP router doesn't allow to set any static routes.

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  • why is Mac OSX Lion losing login/network credentials?

    - by Larry Kyrala
    (moved from stackoverflow...) Symptoms So at work we have OSX 10.7.3 installed and every once in a while I will see the following behaviors: 1) if the screen is locked, then multiple tries of the same user/pass are not accepted. 2) if the screen is unlocked, then opening a new bash term may yield prompts such as: `I have no name$` or lkyrala$ ssh lkyrala@ah-lkyrala2u You don't exist, go away! Even when our macs are working normally, everyone here has to login twice. The first time after boot always fails, but the second time (with the same password, not changing anything, just pressing enter again) succeeds. Weird? Workarounds There are some workarounds that resolve the immediate problem, but don't prevent it from happening again: a) wait (maybe an hour or two) and the problems sometimes go away by themselves. b) kill 'opendirectoryd' and let it restart. (from https://discussions.apple.com/thread/3663559) c) hold the power button to reset the computer Discussion Now, the evidence above points me to something screwy with opendirectory and login credentials. Some other people report having these login problems, but it's hard to determine where the actual problem is (Mac, or network environment?). I should add that most of the network are Windows machines, but we have quite a few Macs and Linux machines as well, but I'm not sure of the details of how the network auth is mapped from various domains to others... all I know is that our network credentials work in Windows domains as well as mac and linux logins -- so something is connecting separate systems, or using the same global auth system.

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  • 2 Computers, same network, different outgoing speeds when uploading to internet?

    - by user117339
    I have 2 work machines in my office, a PowerMac G5 and a MacBook Air. Both behind an IPCop firewall. The PowerMac is connected through a gigabit switch, the MacBook Air is connected through a Netgear 802.11g access point that is then plugged into the gigabit switch. There is also a FreeNAS box, both machines are able to read and write files to it at close to their pipe speeds. The main problem is when I am trying to upload files to the internet at large. The G5 is only hitting 0.1 - 0.25 Mbps. The Macbook is able to hit 2-3 Mbps. The setup (G5 / IPCop / Network) has been the same for 5 years. The issues with the internet speed started about 3 months ago. I hadn't tested on the Macbook at this point. I had complained to the ISP, they said their modem needed a firmware update, did that nothing changed. Reset IPCop, turned off squid, etc. No changes. The ISP switched the office over to a better plan with a theoretical 6 Mbps up, still no change. At this point I tried testing the Macbook, and lo and behold there's the speed. But why? I have tried changing out everything, cables, switches, using another ethernet port on the G5, wiping the system, using DHCP, using manual IPs, changing DNS servers, etc. Nothing works. I figured that if there was something horribly wrong with the network, then internally I would find a similar issue, but that is perfect. iperf, ping, etc show no dropped packets and near saturation of the internal network. I'm at a loss as to what the heck is going on. Any ideas would be appreciated! Below are some screenshots of speedtest.net: G5: Macbook Air:

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  • Bypass network stack. Which options do we have? Pros and cons of each option [on hold]

    - by javapowered
    I'm writing trading application. I want to bypass network stack in Linux but I don't know how this can be done. I'm looking for complete list of options with pros and cons of each of them. The only option I know - is to buy solarflare network card which supports OpenOnLoad. What other options should I consider and what is pros and cons of each of them? Well the question is pretty simple - what is the best way to bypass network stack? upd: OpenOnload It achieves performance improvements in part by performing network processing at user-level, bypassing the OS kernel entirely on the data path. Intel DDIO to allow Intel® Ethernet Controllers and adapters to talk directly with the processor cache of the Intel® Xeon® processor E5. What's key difference between these techologies? Do they do roughly the same things? I much better like Intel DDIO because it's much easy to use, but OpenOnload required a lot of installation and tuning. If good OpenOnload application is much faster than good Intel DDIO application?

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  • How to improve network performance between two Win 2008 KMV guest having virtio driver already?

    - by taazaa
    I have two physical servers with Ubuntu 10.04 server on them. They are connected with a 1Gbps card over a gigabit switch. Each of these host servers has one Win 2008 guest VM. Both VMs are well provisioned (4 cores, 12GB RAM), RAW disks. My asp.net/sql server applications are running much slower compared to very similar physical setups. Both machines are setup to use virtio for disk and network. I used iperf to check network performance and I get: Physical host 1 ----- Physical Host 2: 957 Mbits/sec Physical host 1 ----- Win 08 Guest 1: 557 Mbits/sec Win 08 Guest 1 ----- Phy host 1: 182 Mbits/sec Win 08 Guest 1 ----- Win 08 Guest 2: 111 Mbits /sec My app is running on Win08 Guest 1 and Guest 2 (web and db). There is a huge drop in network throughput (almost 90%) between the two guest. Further the throughput does not seem to be symmetric between host and guest as well. The CPU utilization on the guests and hosts is less than 2% right now (we are just testing right now). Apart from this, there have been random slow downs in the network to as low as 1 Mbits/sec making the whole application unusable. Any help to trouble shoot this would be appreciated.

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  • How can one restrict network activity to only the VPN on a Mac and prevent unsecured internet activity?

    - by John
    I'm using Mac OS and connect to a VPN to hide my location and IP (I have the 'send all traffic over VPN connection' box checked in teh Network system pref), I wish to remain anonymous and do not wish to reveal my actual IP, hence the VPN. I have a prefpan called pearportVPN that automatically connects me to my VPN when I get online. The problem is, when I connect to the internet using Airport (or other means) I have a few seconds of unsecured internet connection before my Mac logs onto my VPN. Therefore its only a matter of time before I inadvertently expose my real IP address in the few seconds it takes between when I connect to the internet and when I log onto my VPN. Is there any way I can block any traffic to and from my Mac that does not go through my VPN, so that nothing can connect unless I'm logged onto my VPN? I suspect I would need to find a third party app that would block all traffic except through the Server Address, perhaps Intego Virus Barrier X6 or little snitch, but I'm afraid I'm not sure which is right or how to configure them. Any help would be much appreciated. Thanks!

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