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  • bluetooth doesn't recognize mouse (and other devices)... sometimes

    - by Angelo
    I have a problem with bluetooth with Vista, running on my MacBook. It often doesn't recognize my wireless Magic Mouse. And I saw that it even doesn't seem to start as the pictogram in the task-bar isn't there most of the time I run Vista. But I'm only an Apple-nerd, so I don't know to much about this issue on Vista. When reinstalling Boothcamp or other updates, then once in a while bluetooth recognizes my own mouse (and other devices from some neighbours... so that implicates that the problem must be the bluetooth function in the first place, not my mouse.) Is there some update for the bluetooth application? Angelo

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  • DD-WRT Router Can't hold a connection after initial setup...

    - by AC
    Struggeling with my new DDWRT router (Buffalo WZR-HP-G300NH) configuration. I configured it using one machine while comparing the settings on my existing Linksys WRT54GL on another machine. To the best of my knowledge, I've set it up the same way as my Linksys, but DDWRT has so many other options. After configuring it, I plugged it into the modem, VOIP device & my network. I see the phones come back online. However after a few minutes, it seems I lose the outbound connection (phones die and I can't get out over HTTP). What's confusing me is it works for a few minutes, then it fails. No idea what to look for. Ideas?

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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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  • How do I map a network drive in Ubuntu? I want to save my Firefox downloads directly in the mapped n

    - by NJTechie
    I work in an environment wherein files are exchanged over email which are then processed into databases. In Windows, mapping a network drive and storing files directly to a folder in the network drive from Firefox/Chrome downloads is a breeze. How to achieve the same in Ubuntu? I don't see the SFTP'ed drive/directory as options in Firefox- Downloads setup. Thanks in advance!

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  • How do I map a network drive in Ubuntu? I want to save my Firefox downloads directly in the mapped n

    - by NJTechie
    I work in an environment wherein files are exchanged over email which are then processed into databases. In Windows, mapping a network drive and storing files directly to a folder in the network drive from Firefox/Chrome downloads is a breeze. How to achieve the same in Ubuntu? I don't see the SFTP'ed drive/directory as options in Firefox- Downloads setup. Thanks in advance!

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  • Wifi Works with Android and Windows 8 but not Linux and Win 7

    - by eramm
    Support has told me that our company wide wifi network is setup to support mobile phones only. However it doesn't make sense to me that they can identify a mobile device rather they have setup the Access Point to use a protocol that is only supported on Android and Windows phones. Because the Access Point supports Windows mobile this means that laptops running Windows 8 can also connect to the Access Point (proven). So it stands to reason that since Android is based on Linux there must be a way to connect using Linux as well. iwlist shows IEEE 802.11i/WPA2 Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : TKIP CCMP Authentication Suites (1) : 802.1x WIreshark seems to show that a connection is being made to a website to get a certificate and use a Domain Controller for authentication. Questions: 1) what protocol could they be using that is supported on Win Mobile and Android but not on Win 7 and Linux (Debian) ? 2) what tools can I use to help me discover what protocol i need to support ? I have used iwlist and wireshark but I was not able to glean to much useful information from them. I can post the results if needed. 3) is there an app i can use on my Android phone to help me understand what kind of network it is connecting to ? I can provide more information if you tell me how to get it. I just don't know what I am looking for.

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  • scp to remote servers stalls, unable to isolate cause

    - by Rolf
    When I copy a large file (100+mb) to a remote server using scp it slows down from 2.7 mb/s to 100 kb/s and downward and then stalls. The problem is that I can't seem to isolate the problem. I've tried 2 different remote servers, using 2 local machines (1 osx, 1 windows/cygwin), using 2 different networks/isps and 2 different scp clients. All combinations give the problem except when I copy between the two remote servers (scp). Using wireshark I could not detect any traffic volume that would congest the network (although about 7 packets/sec with NBNS requests from the osx machine). What in the world could be going on? Given the combinations I've used there doesn't seem to be any overlap in the thing that could be causing the trouble.

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  • Aircrack-ng Usage on Windows (XP) -- Needs clear steps

    - by Alvin
    I've found that Aircrack-ng is very powerful tool for wireless hacking. But it is a bit complicated to use (even with its documentation). Also, when I run the GUI, it needs to add a "capture file". What is that? Additionally, it says Windows version is weaker than the Linux version. So how can I get it to run like a Linux version? What are some step-by-step instructions (to use on Windows XP)?

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  • VPN into multiple LAN Subnets

    - by Rain
    I need to figure out a way to allow access to two LAN subnets on a SonicWall NSA 220 through the built-in SonicWall GlobalVPN server. I've Googled and tried everything I can think of, but nothing has worked. The SonicWall NSA management web interface is also very unorganized; I'm probably missing something simple/obvious. There are two networks, called Network A and Network B for simplicity, with two different subnets. A SonicWall NSA 220 is the router/firewall/DHCP Server for Network A, which is plugged into the X2 port. Some other router is the router/firewall/DHCP server for Network B. Both of these networks need to be managed through a VPN connection. I setup the X3 interface on the SonicWall to have a static IP in the Network B subnet and plugged it in. Network A and Network B should not be able to access each other, which appears the be the default configuration. I then configured and enabled VPN. The SonicWall currently has the X1 interface setup with a subnet of 192.168.1.0/24 with a DHCP Server enabled, although it is not plugged in. When I VPN into the SonicWall, I get an IP address supplied by the DHCP Server on the X1 interface and I can access Network A remotely although I do not have access to Network B. How can I allow access to both Network A and Network B to VPN clients although keep devices on Network B from accessing Network A and vice-versa. Is there some way to create a VPN-only subnet (something like 10.100.0.0/24) on the SonicWall that can access Network A and Network B without changing the current network configuration or allowing devices on both netorks "see" each other? How would I go about setting this up? Diagram of the network: (Hopefully this kind of helps) WAN1 WAN2 | | [ SonicWall NSA 220 ]-(X3)-----------------[ Router 2 ] | | (X2) 192.168.2.0/24 10.1.1.0/24 Any help would be greatly appriciated!

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  • OpenVPN bridge network from routed clients

    - by gphilip
    I have the following setup: subnet 1 - 10.0.1.0/24 with a machine used as NAT and also running an OpenVPN client subnet 2 - 192.168.1/24 with an OpenVPN server (the server in subnet 1 connect here) subnet 3 - 10.0.2.0/24 that uses the NAT machine (subnet 1) to access the internet, so all non-local traffic is routed there to the eth0 interface The OpenVPN client creates the tun0 interface and appropriate routing so that I can access machines from 192.168.1/24 [root@ip-10-0-1-208 ~]# telnet 192.168.1.186 8081 Trying 192.168.1.186... Connected to 192.168.1.186. Escape character is '^]'. [root@ip-10-0-1-208 ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 10.0.1.1 0.0.0.0 UG 0 0 0 eth0 10.0.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 10.8.0.1 10.8.0.5 255.255.255.255 UGH 0 0 0 tun0 10.8.0.5 0.0.0.0 255.255.255.255 UH 0 0 0 tun0 169.254.169.254 0.0.0.0 255.255.255.255 UH 0 0 0 eth0 192.168.0.0 10.8.0.5 255.255.0.0 UG 0 0 0 tun0 However, when I try the same from subnet 3, it can't reach that machine. [root@ip-10-0-2-61 ~]# telnet 192.168.1.186 8081 Trying 192.168.1.186... I suspect that it's because subnet 3 is routed to eth0 on the NAT machine in subnet 1 and it cannot jump to tun0. What's the easiest way to resolve it? I don't want to use iptables. I can't change the routing from machines in subnet 1 because it's done in AWS and so it works only with specific interfaces. Also, the NAT machine gets its IP with DHCP and so bridging is a bit complicated. IP forwarding is set on the NAT machine [root@ip-10-0-1-208 ~]# cat /proc/sys/net/ipv4/ip_forward 1 Thank you!

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  • Jumbo Frames on DIR-655

    - by Spookyone
    Hello, I am trying to set up jumbo frames on my gigabit home LAN but no luck so far. My setup is: D-Link DIR-655 router, HW Revision A3, Firmware 1.21 EU Synology DS107+, Firmware 3.0-1337 Laptop w/ Win7 x64, external PCIx NIC managed by "Generic Marvel Yukon 88E8053 based Ethernet Controller" The router is supposed to support jumbo frames but doesn't feature any relevant setting. I set the Jumbo Packet value to 9000 on both the NIC and the Synobox but it doesn't work, ping -f -l 8972 says "Packet needs to be fragmented but DF set". Is there any other setting I overlooked, the DIR-655 doesn't actually support jumbo frames, or what else could be the problem?

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  • Logitech MX3200 keyboard stopped working

    - by Roy Rico
    I have a Logitech MX3200 wireless keyboard and mouse set, and keyboard stopped working. I was working with it and it just stopped in the middle of using it. Some notes: The mouse still works flawlessly, i've tried to reconnect the KB i've tried to reconnect everything, mouse reconnects, keyboard reconnects (or pretends to) I've tried to hard reset (holding the connect button on the receiver for 10 seconds). I've tried new batteries I took out the batteries out of the KB & Mouse and unplugged the receiver over night. The media keys still work (launches winamp) but they main keys does not At this point, i've tried everything I've seen online. I just want to know is my keyboard dead in the water? I would say it's been about 8 months to a year since i've bought it, and the articles i find on the internet all say that's as long as they last... is this true? what's everyone's experience? I hope it's not true.

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  • Can connect to WAN via PC but router doesnt.

    - by user16877
    I have a very strange problem regarding the office network. We are currenltly in a executive suite and when i connect to wan via ethernet cable i get dhcp assigned IP address in my network config. I hooked up the linksys router to the wall expecting it to receive all the necessary ip info but that didnt work. So we have been assigned static ip address to put in to our router later but even with the static ip router doesnt seem to connect to internet. But using the same ip address and assigning to laptop works. I m very puzzled what might be the cause of this so any help is really appreciated.

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  • Linux bonded Interfaces hanging periodically

    - by David
    I've several hosts that are showing problems with connectivity. When working from the command line, for example, typing is frozen for a second or so, then recovers - then it does it again. The most egregious example host would freeze (input) for 15-30 seconds, then recover and go out 5 seconds later. Switching cables didn't do anything - but removing one of the physical cables caused everything to clear up instantly (which why I think this is a network problem). Looking at the network I couldn't see any packets floating that would explain this. These ethernet interfaces (Gigabit Dell) were working normally previously, but since we moved the systems - and put them on a new set of switches - this has been a problem on multiple theoretically identically-configured hosts. The original switches were an HP Procurve 1810-24G and an HP Procurve 1800-24G connected with LLDP; the new switches are both Cisco SG 200-26, which I understand are rebranded Linksys switches. Is this caused by a problem with the switches? Is it the switch configurations? Are the Cisco switches incapable of handling this? I don't see where the configuration is located; I searched the usual /etc/sysconfig/network/devices but there's nothing in there about options (like mii polling) and nothing about the method of balancing the two. Searching scripts, I can't find anything in /etc/init.d/network either. The hosts are almost all Red Hat Enterprise Linux 5.x systems (5.6, 5.7) but some are Ubuntu Server 10.04.3 Lucid Lynx. I need help with both if it comes to that. UPDATE: We're also seeing some problems with servers on the original switches. The HP switches and the Cisco switches are also interconnected (temporarily); there is a cable run from one switch to the next. Pings on any of these hosts show about one ICMP packet out of every 5-6 getting dropped (timed out). Could there be an interaction between the two switches? Oh, and the hosts are using bonding with Balance-RR as the method.

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  • convert home phone wiring to Ethernet

    - by aaa
    can i convert phone wiring in walls to act as only Ethernet network cause the phone wiring is not in use and not connected to the phone company so there is no voltage in the wires i remove the wall plate and i find 6 wires blue,blue/white,green,green/white,orange,orange/white , and i know that Ethernet use 8 here is what i am thinking get Ethernet cable cut it in half and attach wires from wall to the first computer and the same with the other computer so if this is possible do i just attach wires in the same color and ignore brown wire or do i have to rearrange wires , and how much the speed will be thank you in advance

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  • convert home phone wiring to Ethernet

    - by aaa
    can i convert phone wiring in walls to act as only Ethernet network cause the phone wiring is not in use and not connected to the phone company so there is no voltage in the wires i remove the wall plate and i find 6 wires blue,blue/white,green,green/white,orange,orange/white , and i know that Ethernet use 8 here is what i am thinking get Ethernet cable cut it in half and attach wires from wall to the first computer and the same with the other computer so if this is possible do i just attach wires in the same color and ignore brown wire or do i have to rearrange wires , and how much the speed will be thank you in advance

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  • Mass Port Forwarding?

    - by Devoted
    Hi I had trouble but I finally port forwarded 21-23 and thus got SSH working on my Ubuntu machine. If I want to do other things with it such as FTP, should I just port forward 1-10000 so I don't have to worry about port forwarding each individual port? What are the advantages/disadvantages of this?

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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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  • Too many Tunnel Adapter Interfaces

    - by Tomas Lycken
    If I open a command prompt on my machine and type ipconfig /all, I see lots of Tunnel adapter Local Area Connection* 9: Media state . . . . . . . . . . . . . : Media disconnected Connection-specific DNS Sufficx . . . : Description . . . . . . . . . . . . . : Microsoft 6to4 Adapter #5 Physical address. . . . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . . . : No Autoconfiguration Enabled . . . . . . : Yes In fact, they're so many that my "real" adapters are pushed out of the stack, and can't be seen anymore. Is there any flag I can use on ipconfig to hide all virtual interfaces? Or is there some other way around this problem? Since they always say "Media disconnected" I suppose disabling could be an option, but if possible I'd rather not turn any functionality off. I just want to control what output I get from ipconfig. Also, I know these are related to IPv6 stuff. However, most of what I find on google merely states what these are, and that they're harmless - nothing about hiding/removing them.

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  • Network topology for both direct and routed traffic between two nodes

    - by IndigoFire
    Despite it's small size, this is the most difficult network design problem I've faced. There are three nodes in this network: PC running Windows XP with an internal WiFi adapter.Base station with both WiFi and a Wireless Modem (WiModem)Mobile device with both WiFi and WiModem The modem is a low-bandwidth but high-reliability connection. We'd like to use WiFi for high-bandwidth stuff like file transfers when the mobile is nearby, and the modem for control information. Here's the tricky part: we'd like the wifi traffic to go directly from the mobile to the PC, as rebroadcasting packets on the same WiFi channel takes up double the bandwidth. We can do that with a manual configuration by giving the both the PC and the base station two IP addresses for their WiFi interfaces: one on a subnet shared with the mobile, and one on their own subnet. The routes on the PC are set up so that any traffic going to the mobile via WiModem goes through the secondary IP address so that return traffic from the mobile also goes through the WiModem. Here's what that looks like: PC WiFi 1: 192.168.2.10/24 WiFi 2: 192.168.3.10/24 Default route: 192.168.2.1 Base Station WiFi 1: 192.168.2.1/24 WiFi 2: 192.168.3.1/24 WiModem: 192.168.4.1/24 Mobile WiFi: 192.168.3.20/24 WiModem: 192.168.4.20/24 We'd like to move to having the base station automatically configure the mobile and PC, as the manual setup is problematic when you start having multiple mobiles and PCs. This means that the PC can only have 1 IP address and needs to be treated as being pretty simple. Is it possible to have a setup driven by DHCP on the base station that is efficient with bandwidth?

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  • Random and Selective ARP blindness in VMWare ESXi 4.1

    - by Peter Grace
    We have multiple VMWare ESX servers spread out amongst our company, doing various tasks. One particular ESXi host is exhibiting very peculiar behavior. We detect it when our monitoring system (Orion) notifies us that it can no longer ping the box. Upon jumping on the local console of the guest in question, we see that it cannot ping any new addresses that aren't already in its ARP table. At first we thought that the problem was just related to one of our guests, as the problem seemed to always happen to another guest, DevRedis. However, this afternoon the problem swapped and started happening on ApacheBox rather than DevRedis. When I have been fortunate to catch the problem, I have run tcpdump on both sides of the connection (one side being vmware, the other side being a physical webserver) and have noticed the following course of events: Guest ApacheBox sends an ARP request for the physical address of server WindowsBeast WindowsBeast tenders an ARP is-at back to the network indicating its physical mac address. ApacheBox never sees the ARP is-at response. The ESX host in question is running VMware ESXi, 4.1.0, 348481 The two guests (DevRedis and ApacheBox) are both running CentOS 6.3, however they are running two separate kernel versions ( 2.6.32-279.9.1.el6.x86_64 and 2.6.32-279.el6.x86_64 ) so I'm not entirely sure it's a CentOS problem. Does anyone have any thoughts on what might cause this? Has anyone run into it before?

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  • Can't connect back to the wireless network after the password was changed

    - by 7777
    Family changed the network password and some other network settings after new computers were brought into the house because apparently they wouldn't work with what we had. Actually an off-site tech remotely changed it, and I have no idea what he did. My laptop detects the network (it shows up under available networks) but whenever I try to connect it says: Windows is unable to connect to the selected network. The network may no longer be in range. Please refresh the list of available networks, and try to connect again. I wish I could give more details, config settings, but frankly I have no idea what I'm looking for. This is XP (also, not a password issue, I know the password, it's just that I have no idea where to enter it, etc.)

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