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• Offloading backups to secondary network

  - by user1467163

  I'm trying to solve a problem- Currently, we are constantly backing up and have no budget for additional servers. Our production network is still a 10/100 and handles voip, SQL plus our backup traffic, and I'd like to offload the backup traffic onto a secondary network- all of our servers have secondary NIC's that are not in use, and all support gigabit (Our switching hardware does not- a topic for another day). I'd like to move my backups off the production network, but I am having a hard time getting the computers to communicate. I am using a Netgear GS724T switch for the backup network- Chosen for cost and because I have used them extensively on networks saturated with ghosting traffic, so I know it's up to the task. I have defined a VLAN, with ports that are not members of any other VLAN. All traffic is untagged on the VLAN. I have set the servers with 192.168.1.10 and 192.168.1.11 addresses, 255.255.255.0 netmask and I have tried a blank GW, using the local IP of the server 192.168.1.whatever address, and I have tried using the switch's production-side IP as the GW. The machines cannot find each other. DNS addresses are blank because I am going purely by IP for now... Any ideas how to get these machines to talk? they are Windows machines, running Server 2008R2 and 2003R2. Thanks!

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• Ubuntu Connect Button Disabled, cannot connect

  - by CSharperWithJava

  I'm trying to connect to my school network from Ubuntu 12. The network is WPA encrypted and I can connect just fine if the network manager establishes a connection automatically. However, when I get disconnected and try to reconnect a username and password prompt pops up. The credentials are already stored and are autofilled in correctly, but the Connect button is disabled so I can't actually connect to the network. What can I do? The only guess I've found so far is the password is too short and Ubuntu is expecting a full WPA key. I don't administer the school network though so I certainly can't change that.

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• Can't ping static IP from internal network, only from outside

  - by Mike

  I'm running ubuntu and I have apache running, however, I can't ping internally to my static IP nor browse http://207.40.XXX.XX the web server using my static IP. I can only ping/browse localhost, 127.0.0.1, and 192.168.0.120 OR 207.40.XXX.XX only from the outside world. # cat /etc/hosts 127.0.0.1 localhost 127.0.1.1 my-server.myhost.com my-server # hostname my-server # netstat -tapn tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:29754 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN Any ideas why this is not working?

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• Network structure --> Server 2k8r2 <--> Livebox <--> Router <--> Other PCs

  - by Yusuf

  I have a Livebox connection to the Internet and I have set up my network as follows: - Livebox <--> Win2k8R2 Server - Livebox <--> Netgear N150 Router - Router <--> Other PCs Therefore, in my LAN, - the Livebox has IP address 192.168.1.1, - the Router 192.168.1.12 (when accessed from the Livebox or the server), - the Router 10.0.0.1 (when accessed from the PCs connected to the Router), - the server 192.168.1.2, - the PCs 10.0.0.x I was using a previous configuration, which was as follows: - Livebox <--> Netgear N150 Router - Router <--> Win2k8R2 Server - Router <--> Other PCs Everything was simple, and I just had to forward all ports for incoming connection on the Livebox to the Router, and then forward the specific ports to the Server as needed (it must be however noted that any server I use is found on the Win2k8R2 server itself). In this previous configuration, the IP addresses were as follows: - Livebox 192.168.1.1 - Router 192.168.1.12 (when seen from Livebox) - Router 10.0.0.1 (when seen from server & PCs connected to it) - Server 10.0.0.2 - PCs 10.0.0.x So now of course, my port-forwarding does not work anymore since the server is not connected (directly) to the Router. What I would like to know is how do I configure the Livebox and Router to still have the features like before? From what I understand of networks (which is very limited, btw), I see these options: Make the router assign IPs like 192.168.1.x (but then I want the forwarding to be done from the router itself, is it possible?) The forwarding on the router to the server uses IP address 10.0.0.2. I could change it to 192.168.1.2 (Is that even possible, does it work?) Forward all ports from the Livebox itself to the server, and then manage them there (Is software-based port-forwarding as secure as hardware-based?)

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• Joining a network with a Virtual Windows Server 2008 R2

  - by Triztian

  Hi all, here's my case, I have set up a share in a virtual windows server 2008 R2, the server is hosted by GoDaddy my question is, how do I access the server's public folders, I need to open a file locally (on the client) and to do that I need the server to show up in my Network locations, I have the right credentials and have created a special group that has access to the particular folder that I'm sharing the problem is I don't know how to add the server to my network locations. I have tried VPN Connection but it is my understanding that it cannot be done since it is virtual share server. Any help is trully appreciated.

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• Connection reseted- error 101

  - by Maja

  I have a problem with internet connection- when i try to load website, it will always write this error:Error 101 (net::ERR_CONNECTION_RESET): Connection was reseted. I'm using Win7 64 bit and I have this router: asus rt n10. First, i tried to change MTU from 1504 to 1472 and it worked for a while, but yesterday it started again. Now I have MTU 1440 but I don't want to lower it more. Is there another solution? Btw I have no malware in my laptop (I used the avast scan) and I've also deleted cookies and disabled proxy server (I'm not using any).

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• How to build a private Wi-Fi Network server with VMware?

  - by Maarten Schermer

  For a school project, we have to build a Private network with VMware vSphere , which we can connect to with a Username and Password. On the network we want to create a folder for each Useraccount. Also we must have add a few groups (Admin,Customer,Manager). We must be able to connect to our network via the school Wi-Fi. We want to build a safe and secure network, with an easy way to access the network. Do you have any tips on how to approach this?

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• unable to start apache after changes to rc.conf and resov.conf

  - by shupru

  I had a working configuration this morning with the following simple /etc/rc.conf ifconfig_rl0="DHCP" ifconfig_xl="inet 192.168.1.11 netmask 255.255.255." defaultrouter="192.168.1.1" I added the following lines: firewall_enable="YES" firewall_type="SIMPLE" firewall_logging="YES" sshd_enable="YES" apache_enable="YES" mysql_enable="YES" my httpd.conf includes: NameVirtualHost 192.168.1.11 <VirtualHost 192.168.1.11> ... </VirtualHost> now apache and ssh server are down. changed rc.conf back to last working configuration and still no ssh or apache apachectl start #--> /usr/local/sbin/apachectl start: httpd could not be started apachectl status #--> Looking up localhost Making http connection to localhost Alert!: Unable to connect to remote host.

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• openVPN as a way to connect to a LAN by another client, different from server

  - by Einar

  Setup: one LAN handled by a router without a publicly available IP address but without any outbound connection restrictions ("target LAN"); a separate server publicly reachable from the Internet ("gateway"). I am trying to set up openVPN so that a third client can connect to the "gateway" and access the "target LAN". As the router of "target LAN" is not reachable from the Internet directly, it connects to the gateway itself via openVPN as well. The problem is how to handle routing. The LAN router has two network interfaces (for the outside network and the LAN itself). In openVPN (the server on the gateway) I set client-to-client and push "route 192.168.10.0 255.255.255.0" but I assume this would be horribly wrong (it actually messed up the routing on the LAN router until I killed openVPN). openVPN is not using bridging, is configured via tun. Other config details from the server server 10.8.0.0 255.255.255.0 client-config-dir ccd route 192.168.10.0 255.255.255.0 And the client file in ccd is iroute 192.168.10.0 255.255.255.0 What can be adjusted to ensure that a third client can connect through openVPN and access the LAN mentioned earlier?

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• Does ICS modify windows firewall policies in the registry?

  - by insipid

  I had a host machine I wanted to enable ICS on. First I realized that doing so was not possible until I enabled the Windows Firewall. Once I enabled the firewall and set up ICS, I noticed due to group policy I could no longer disable the firewall. Also, any ports I tried to open seemed to be ignored. Although nothing seemed to be configured when I used the mmc snap-in to view local computer policy, when I checked the registry I noticed several policies set there in HKLM (such as disabling AllowLocalPolicyMerge). I was able to remove the policies from the registry and my open ports worked, but they were eventually re-added without my input. The network I am sharing the internet from is an "unsecured" wireless network with an authentication page, is it possible that this is causing those policies to be set? Did ICS set those policies? When you go to the properties of the ICS enabled adapter and go to the ICS settings it takes you to a tab called services where you can add and remove "services running on your network that internet users can access". Is this related to the windows firewall?

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• How to create a VPN between a Host and VMWare VMs?

  - by Anindya Chatterjee

  I have a set of machines as follows My home laptop running Win7 Ultimate with internet connection. A vmware workstation vm running Windows Server 2003 Standard edition server in my laptop w/o internet connectivity Some of my peers' machines connected to internet I want to create a VPN with these machines, provided the VM will not have any direct internet connection and my peers should able to connect to the SVN server application running on this Win2003 server VM. Can anybody please suggest me how to setup this network, what software I need to install in both physical machine and vm, what kind of network connectivity should be there between vmware guest and host machine? EDIT: I deliberately don't want to connect the VM with internet. The host will work more of a gateway of the VPN connection for the VM.

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• AuthInfoRequired cups overwrites

  - by mooscape

  My problem is basically identical to the following: http://bbs.archlinux.org/viewtopic.php?id=61826 Put simply, I have a machine in ubuntu trying to connect to another ubuntu machine via a network in order to use the printer attached. There is no problem printing until I restart the guest machine. Immediately it overwrites the printers.conf file (under /etc/cups/printers.conf). It always adds the same line: AuthInfoRequired username,password I stop cups and change it to *#*AuthInfoRequired username,password to comment out the command. Start cups. Works great 'til the next shutdown. Then it gets overwritten again. Googling indicates it may be GTK problem and not CUPS, but I have found no permanent solution to date. Any suggestions appreciated ....

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• USB MFP print server that works with Windows x64?

  - by hangy

  Right now, we are using the Longshine LCS-MFP101-2 to connect to our MFP device (printer/scanner combo) over LAN. However, the required driver (RMVUSB, Remote Virtual USB) cannot be installed on 64 bit Windows operating systems such as Windows XP x64 or Windows 7 x64. Since the distributor lists the product as "phased out", I do not expect any updated 64 bit drivers any time soon. :/ Because of that, I am searching for a relatively cheap SOHO MFP print server (1 USB port should be enough) which can be used with 32 bit and 64 bit versions of Windows. Do you have any ideas or recommendations? Thanks!

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• No Drivers in Ubuntu 9.1!!!

  - by Chris

  I have a Lenovo G550 and I installed Ubuntu on it through Windows and I have no drivers. No sound, no wireless. I previously had installed it through Windows Vista with no problems at all. I now run Windows 7 and cannot seem to get it to function properly. I tried installing the recommended drivers to make sure the proper ones were installed and that still did nothing. Any one have ANY idea what could be happening? I just don't feel like dealing with it.

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• WNDR3700 Router + Cisco SG200-08 + LACP + Dual Uplink

  - by kobaltz

  Background I have a storage server that has several virtual machine images stored on them. I would store them locally, but I have limited space on my desktop (using SSD storage). I would like to increase the bandwidth between the desktop and the storage server by using two NICs on each computer. My original configuration allowed about 55MBps between the desktop and storage server. This storage server also has several TBs of documents, pictures, movies, vms, and ISO/programs. The storage server has 8 1.5TB hard drives in a RAID 10 configuration with a hardware RAID controller. The benchmarks on the RAID 10 are about 300MBps. Configuration In short, I am trying to bridge my switch and router. The switch is a small 8 port Cisco smart switch that supports 802.3ad LACP. I have two computers plugged into the switch, each with 2 Intel Gigabit NICs. The first computer is a Windows 7 machine that has the Intel ANS software installed. I have LACP configured with the computer and now show 3 NICs (2 Physical + 1 TEAM Virtual @ 2Gbps). It looks like this computer is configured correctly. I trunked the two ports that this computer is plugged into with the switch's web interface. The second computer is a homebrew storage box running debian. I also have the bonding enabled on this machine and the switch configured with LACP. Without having the WNDR3700 router in the picture yet, I am able to communicate between the Windows 7 machine and the debian box since they both have static IP addresses. With LACP enabled on both machines I am getting about 106-108MBps speeds. Issue I plug in a network cable from the switch into the router and enable DHCP on the desktop. I saw no need to have a static address on the desktop. My transfer rates are still from 106MBps-108MBps. While this is still a boost, I am trying to figure out how to get about 140-180MBps. I am thinking that I need to increase the bandwidth from the router to the switch. My switch allows 4 groups for port trunking. I plugged in a second network cable from the router to the switch. My question is, what is the proper way to fix this issue. Should I port trunk the two ports that are going from the switch to the router? Keep in mind that the router is a WNDR3700 and is unsure whether or not it supports LACP. I do have OpenWRT installed on the router, but it still wasn't clear in any documentation that I found if it supported 802.3ad LACP standards. I am also wondering if there needs to be anything changed within the Cisco settings. [Edit] - Corrected some numbers, wasn't really paying attention. It looks like the speeds though at least two NICs are bonded with LACP is still reaching the max bandwidth of one port. Is there a way to configure the switch so that I can increase this bandwidth? Also, on the storage server, I had a couple of extra NICs laying around and threw them on there as well. Another EDIT and More Findings I happened to look at the traffic of each individual NIC and think that I see the problem. I tested with a simple transfer for a 4GB file. I noticed that only one of the NICs was taking the load of the traffic. I then copied the file back to the Storage Server and noticed that the other NIC was sending out the traffic. I have 802.3ad LACP enabled on the two NICs and I see that it gets enabled dynamically on the switch's interface. Should I be using Static Link Aggregation?

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• Can I limit remote desktop to a particular network card?

  - by Jack Mills

  I have two routers/internet connections connected to my PC. One is a slower connection with a fixed IP that I use for business, the other is a faster connection I use for day to day surfing. I have to use the fixed IP connection to log onto certain servers (due to security) to work but I'm finding that often my PC will try to use my other internet connection to connect which will get rejected (as it doesn't have the fixed IP). Can I limit remote desktop to use a particular network card to get around this problem. Note: I'm running Windows 7

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• PC cannot ping another PC on my home network

  - by Mike C.

  Hello, I am running Windows 7 on my PC, and I am running a Windows 2008 Server VM in Windows Virtual PC. Both machines have network connectivity. However, I cannot ping the VM from the host neither by computer name nor IP. I can ping the host machine from the VM both by computer name and IP. Is there something I need to enable on the VM to allow it to be seen by other machines on my network? Thanks!

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• Be your own cloud [closed]

  - by Jedi

  I have reasonably many electronic gadgets that can go LAN or WI-FI. But how do you share and/or syncronize all your files among them? Well, between my laptops and my desktop I use Dropbox. A nice way to share files among computers. But what if your HDD on your laptop is not large enough to carry music, pictures and films. Normally you would buy an extern USB HDD and store them there, but then you cannot reach the files from other computers which are not connected to the USB device. Many would say I should use a solution like a cloud with a disc station or something like that. But my needs are follows: A mass storage which can be reached among devices (laptops, desktops, iPhone, Android phone, XBox or Playstation). Has low power requirements and is silent. Can be reached inside home and it would be nice if it could be reached outside home as well. Cheap I have looked around and I have found an wireless router which can share a USB device: D-Link Wireless N HD Media Router. I thought it would be an interesting solution for a simple local cloud solution. D-Link uses a little program called SharePort Plus which mount the USB device to your computer. Unfortunately is the transfer rate to the USB storage device rather disappointing. The transfer rate was 5.8 Mbps even though the distance between the laptop and the router was 2 meter. The same is happening when I use cable from the computer to the router. Another thing is that SharePort Plus only allows one computer be connected to the device at a time. The last thing was something I could live with. I have search on the Internet for other solutions and found this video from Synology. I'm not sure if their solution is the right one. I think a disc station connected to my home LAN could the right solution. What have you done in your home to store and share files among your computers and game consoles?

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• How two use 2 subnets on one network

  - by BGuy2010

  I have some servers at a colocation. They've given us an IP range,subnet,and gateway. Now we have run out of IP's and they've given us a new range of IP's but with a different subnet and gateway. We have a Juniper NetScreen firewall and a load balancer, and I am not sure how to proceed in order to be able to use these new IPS that are on a different subnet. Do I need to setup a new VLAN? on our firewall? I tried adding one of the new IP's on one of our servers, with the new subnet and gateway. I could ping the alternate gateway, but could not ping the assigned IP from outside or from inside.

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• two identical broadband lines working as one

  - by Katafalkas

  I have been trying to find an answer to this, but all I get is hobbyists trying to connect they linksys's and get some magic out of it. So I am thinking of a way I could combine two 100Mbp Fiber Optics lines into a single connection for our office. I assume it involves some CISCO learning or something like this. Was thinking that I might need to configure some big router to load-balance the NAT'ing in some way. I assume that meny of you have done something similar and maybe someone could share the knowledge or at least provide some tips ?

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• Systemd-networkd: How can I prepend a static nameserver entry to DHCP-discovered nameservers?

  - by runiq

  I'm using systemd 213 on Arch Linux, and systemd-networkd with DHCP to connect to the internet. I'm also running a caching DNS server on 127.0.0.1. I'd like to make this server the first DNS server in the list, but I'd also like to use the nameservers discovered by systemd-networkd's DHCP facility. Using a static resolv.conf isn't really possible, because I connect to networks with different DNS settings. I know I can set fallback DNS servers in /etc/systemd/resolved.conf, but is there a way with systemd-networkd to prepend my local DNS server to those discovered by DHCP?

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• linux macvlan - stop from broadcasting hostname

  - by staticfloat

  I am trying to simulate two different computers on one box, using the macvlan module (which is awesome, by the way) but I have one small problem; When I create the macvlan Ubuntu 11.10 very helpfully starts broadcasting its hostname on both interfaces, creating an amazing amount of confusion for everything that deals with hostnames. Does anyone know how to stop ubuntu from advertising its hostname on a certain interface? Thanks!

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• How does Subnetting Work?

  - by Kyle Brandt

  How does Subnetting Work, and How do you do it by hand or in your head? Can someone explain both conceptually and with several examples? Server Fault gets lots of subnetting homework questions, so we could use an answer to point them to on Server Fault itself. What is classless routing and why is class-based routing obsolete? If I have a network, how do I figure out how to split it up? If I am given a netmask, how do I know what the network Range is for it? Sometimes there is a slash followed by a number, what is that number? Sometimes there is a subnet mask, but also a wildcard mask, they seem like the same thing but they are different? Someone mentioned something about knowing binary for this? What is NAT (Network Address Translation). Not looking for links to other sites (unless maybe you have one post with a bunch of good ones). I already know how to subnet, I just thought it would be nice if Server Fault had a generic subnetting answer.

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• G4 server running slow

  - by Abby Kach

  I have HP proliant ML 350 servers. We have 8 remote locations where users connect and log on to our server through DYNDNS to access our company ERP's to conduct day to day work. The base of our company ERP's is oracle for which we have a separate server.Now the problem is day by day the load on the server is increasing and the speed is getting slower and slower and users are facing a lot of issues . so I are planning to implement Sonic wall VPN. I conducted a demo of sonic wall but it was slower than the current speed of dyndns. the configuration of my server is as follows :- Linux HP ProLiant 370 Intel Xenon 3.20 GHZ 150 GB (72 * 2) 3 GB Suse Omega HP ProLiant 370 Intel Xenon 3.20 GHZ 300GB (72.8 * 4) Raid 5 4 GB Windows Server 2K3 Enterprise Edition Storage Box HP Storage Works 1400 Intel Xenon 2.00 GHZ 4 TB(1 TB * 4) Raid 5 2 GB Windows Server 2K8 Enterprise Edition Domain & Terminal HP ProLiant 350 Intel Xenon 3.20 GHZ 250 GB(72.8 * 3) Raid 5 4 GB Windows Server 2K3 Enterprise Edition Can some one help me as to how can i speed up my network at remote locations and reduce the problems of speed etc..

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• Terrible ping time with TP-Link wireless router

  - by rabbid

  I am literally a foot away from this useless TL-WR340G/TL-WR340GD router and check out this ping time: 64 bytes from 192.168.1.8: icmp_seq=291 ttl=64 time=9477.516 ms 64 bytes from 192.168.1.8: icmp_seq=292 ttl=64 time=8954.423 ms 64 bytes from 192.168.1.8: icmp_seq=293 ttl=64 time=8262.836 ms 64 bytes from 192.168.1.8: icmp_seq=294 ttl=64 time=7937.853 ms 64 bytes from 192.168.1.8: icmp_seq=295 ttl=64 time=7517.768 ms 64 bytes from 192.168.1.8: icmp_seq=296 ttl=64 time=7106.063 ms 64 bytes from 192.168.1.8: icmp_seq=297 ttl=64 time=6492.109 ms 64 bytes from 192.168.1.8: icmp_seq=298 ttl=64 time=5835.305 ms 64 bytes from 192.168.1.8: icmp_seq=299 ttl=64 time=5314.897 ms 64 bytes from 192.168.1.8: icmp_seq=300 ttl=64 time=4902.705 ms 64 bytes from 192.168.1.8: icmp_seq=301 ttl=64 time=4716.959 ms 64 bytes from 192.168.1.8: icmp_seq=302 ttl=64 time=5224.450 ms 64 bytes from 192.168.1.8: icmp_seq=303 ttl=64 time=5024.079 ms 64 bytes from 192.168.1.8: icmp_seq=304 ttl=64 time=5044.100 ms 64 bytes from 192.168.1.8: icmp_seq=305 ttl=64 time=4477.990 ms 64 bytes from 192.168.1.8: icmp_seq=306 ttl=64 time=3582.432 ms 64 bytes from 192.168.1.8: icmp_seq=307 ttl=64 time=2911.896 ms At this time mine is the only computer using the router. This happens from time to time. I'd restart the router, and then it'll have a 1-2 ms ping for a while, and then back to terrible ping. Is it just a poor quality router? Suggestions? Thank you

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