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  • Machine only responds to network requests from machines it is pinging

    - by ILikeFood
    I have two machines. WOPR: Ubuntu server edition 10.10 LTS 32 bit Adam Selene: Windows 7 home premium 64 bit / Ubuntu Desktop 10.10 LTS 64 bit I want to be able to SSH from Adam Selene to WOPR, so I connect them to the same network. Here's where things get weird. I cannot connect to WOPR in any way under normal circumstances. But, if WOPR is pinging Adam, then it starts responding to ping requests, HTTP gets, and SSH tunnels. I'm an amateur, and brand new to Ubuntu server, so I suspect there's a misconfiguration somewhere, but there's an off chance it's a bug in the OS. Does anyone know what might cause this behavior? Thanks a lot!

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  • Connecting multiple access points

    - by mohsen farahanipoor
    I'm working on a big project. We want to create a wireless network throughout the building with 15 floors. My idea is that we should set up one unified wireless access point at least in each floor...in case of signal attenuate, we use Access point extender/repeater. I selected DWL-6600AP from among D-Link industrial access points. I want to implement a single wireless LAN throughout the building. Is it possible to combines multiple DWL-6600 access points to achieving just a single WLAN? Can a wireless switch controller do this task? Can these Access Points interfere with each other? What is the solution? I read D-Link website's learning materials, but I am still confused. My other question is around the connecting these APs to Wireless Switch Controller - Is it possible to use power line for connecting DWL-6600 to Wireless Switch Controller device? My main goal is that clients with portable devices such as laptops should be easily connected to the network to share & have communication without any more manual configuration as they are already connected to a single network.

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  • Ubuntu Natty 11.04, Turning the wireless switch off; switches it off permanently!

    - by ZiGi
    i'm using an hp pavilion dv2000 i turned the wifi switch off by mistake, the LED turned orange and the wifi got disconnected. and now when i turn the switch on, it remains orange and the wifi still isn't functional. this happened before; i found a fix that worked searching google. it was done via terminal commands and i didn't have to download anything but i can't find the solution anymore! wlan0 shows up when i use: :~$iwconfig #BLA BLA BLA #... wlan0 IEEE 802.11abg ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=off Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off more results: :~$ sudo ifconfig wlan0 up SIOCSIFFLAGS: Operation not possible due to RF-kill :~$ rfkill list all 1: phy0: WirelessLAN Soft blocked: yes Hard blocked: yes :~$ sudo rfkill unblock all :~$ rfkill list all 1: phy0: WirelessLAN Soft blocked: no Hard blocked: yes :~$ sudo ifconfig wlan0 up SIOCSIFFLAGS: Operation not possible due to RF-kill it's still hard blocked! even though the switch is turned on; gives the same result eitherways a direction to a page with a working solution is a much appreciated answer!

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  • Is it possible to combine two internet connections to increase performance?

    - by cornjuliox
    I've got a small home network, 3 PCs plus a laptop or two when the relatives come to visit, connected to a single cable internet connection. Now, as soon as everyone starts using the 'net the performance starts to suffer and if the load is heavy enough nobody can get anything done and everyone complains. At one point it was so bad that only one of us could use it at a time. I was researching possible solutions to this problem and I heard that internet cafes that utilize 2 internet connections, possibly from different providers, and have some sort of router that allows them to split the traffic between the both of them, with online games going through one and web traffic going through another. Is this possible? What is the technical term for it, and can/should it be applied to a home network setup or is there another solution to this problem?

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  • Why can't I connect to my router's config page with Windows 7?

    - by user17940
    I've got a Belkin wireless router, and just bought a new Dell computer with Windows 7 pre-installed. I can connect to the Internet and my home network just fine, but when I try to visit my router's configuration page at http://192.168.2.1, I get a "Connection was reset" error. Nothing I do will make the router's configuration page come up in my web browser. More background information: I could always get to the router's config page from my Windows XP machine. I never had any trouble prior to getting this Windows 7 computer. I can ping 192.168.2.1 successfully from my Windows 7 computer. My PC is connected to the router by a physical CAT5 cable, not via wireless. Every device connected to my router, including the new computer, can get to the Internet with no problem. Here are some things that did not solve the problem: I tried turning off IPV6 in Windows. I tried turning off my firewall and antivirus software I tried using https instead of http I tried disabling and then enabling the network connection in Windows I tried reverting my network card driver back to an older version I have tried both Firefox and Internet Explorer web browsers. Has anyone experienced something like this before, and solved it? Thanks a lot for your help!

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  • Laptop's wifi router is not emitting signals therefore my PC and Nokia cell are not connecting to internet

    - by umer sanny
    I have a USB internet connection which I plugged into my laptop. I converted my laptop's Wifi into a Wifi router so that I can attach my PC and cell to this network and enjoy internet, but it doesn't work. I have a Dell Inspiron N5110 i7 Windows 7 64-bit laptop, Dell D865 PC and Nokia C5. My PC and cell are showing that there is a new Wifi connection available, but when I connect to it, it won't load any web page. Reason is my laptop's Wifi is not emitting any internet signals or may be some other issue which i dont know.. laptop's adapter is 802.11b/g/n I don't know why. How can I enjoy Wifi internet on laptop, PC and cell at the same time?

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  • Laptop connecting to Wifi but not to internet

    - by eddard stark
    My friends laptop is able to connect to the wifi router . Typing 192.168.1.1 in the browser shows the login page for the router . But he cannot connect to the internet. This is true on both windows and linux (dual booting setup) . There are 3 other laptops connecting to the internet via wifi just fine and his was fine too until this happened all of a sudden . I tried doing a tracert from windows to an external ip . The first hop to the modem is fine but then the packets seem to be getting dropped . If his wifi adapter is damaged how is it connecting to the modem via wifi . I havent asked a question here before but this is really weird . If anyone needs any more information I shall post it here.

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  • Wireless card overheating?

    - by Sidney
    Ok, so I've had my laptop for several years (I wanna say 4, but possibly more), it's a Toshiba Satellite. I'm running Linux mint 15, and am having a strange new issue, after several hours of running my wireless stops. It can SEE wireless networks, but refuses to connect to any of them. (On a sidenote, connecting to a router with a cable at this point works fine) The fact that it can SEE the networks make me think the card is in good condition, and it's software related The fact that it works for several hours before booting me makes me think perhaps the transmitter is getting too hot. I don't use my laptop in dusty environments, and keep it on an elevated surface (alternatively, I actively try not to let it sit on soft surfaces where the vents get covered). I spray out the cpu fan about once a year with compressed air about once a year, so I really don't think the insides should be too dirty. Finally, unfortunately, sensors only gives me CPU temps, but they run about 40-50 degrees C, which from my understanding is perfectly normal for an I3. Does anyone have any suggestions on what I can do to determine the root cause of this?

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  • Can't access LAN computers with SSH

    - by endolith
    I got a new Windows 7 machine, and was using VNC,SSH etc to connect to my Ubuntu machine, and it worked fine previously. Now it doesn't work if I use the machine's hostname or local IP, but if I use the DynDNS name, it works. I can also access it from my Android phone using the local hostname over SSH. If I try to connect with SSH to the hostname, it says "Host does not exist". VNC says "Failed to get server address". NX says "no address associated with name", and I don't see it in Windows' "Network" folder. I've rebooted everything. I've turned off Windows firewall. It was working fine a few days ago, but now it's not. How do I figure out what's blocking it?

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  • Using a second wifi router as a wireless bridge

    - by Greg-J
    I purchased a D-Link DGL-4500 to replace my aging WRT54G around a year ago, only to find it nowhere near as reliable. It's been collecting dust since. I'm wondering if there is a way to use it as a wireless bridge so I can connect it to my home network and then use it's ethernet ports to provide network access to several devices. Is this something that can be done? If not, are there devices meant for this? Any help would be appreciated.

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  • Turn my machine in a hotspot/proxy

    - by Leonardo
    My workplace does not provide a wifi... only wired connection... but my machine has a working wifi card... is there a way to "bridge" my wired connection, making my iphone connect to it and use it as if the own machine is being used? (the idea is to make my machine provide a wifi-connection and route it through my wired connection) Details: My machine OS is win 2012 server I have full admin rights to my machine There is a corporate-proxy PS: If more details needed pls ask!

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  • port forwarding/network settings preventing from game hosting

    - by Xitcod13
    I asked where to post this question on stackoverflow meta and they directed me here. Im on wireless connection and I want to host games in StarCraft: Brood War and i've been looking everywhere on how to accomplish that. My internet is amazingly fast so its not an internet problem (and when i play other peoples games dont experience lag) I found out that i need to have a static IP but I have already checked that i do (i downloaded a program to make my id static and it already was; The program asked for which router I used So i think it checked the router settings already) I found out that i need to allow Sc access through the firewall which i already did (i have zone-alarm but I allowed it everything possible except receiving emails lol) I have recently noticed that few people actually can join my games but most of them cannot. I dont know whats going on here. I really want to be able to host games overall how do I go about checking what is wrong with the network. Update: Alright I figured out what i did wrong in the first part I did not actually set up forwarding on the router -.- I have tried to fix my mistake. I went to forwarding options in my router (as this guide for my specific router suggests) but when i click ok I get a message incorrect ip address. 192.168.1.1 is my routers address. The default address that appears there is 192.168.1 (blank) I have set it to my computers current Ip4 adress which 192.168.1.23 I hope this works If so i will post it as an answer and mark it.

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  • Create a wireless Network in Ubuntu 10.04?

    - by Vinaychalluru
    Hello., Whenever i need to copy some files and couldnt find a pen drive, [ i dont have bluetooth enabled in my lap], I create a new ad hoc (wireless) network in windows and share the necessary files on the network and share files with the other system. Now, i want to do the same with Ubuntu. But, i couldn't. I could create a new network, but i am not able to chare or send or even dont know how to access the system connected to the network. So, how can i do this? Thanks

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  • DD-WRT Acces Point as a Router

    - by Dzh
    Following suggestion to this question asked on Network Engineering, I am asking the question here. this is an extension to my previous question (I think it was deleted), where I was claiming that DDWRT was disabling it's DHCP server once connected to the network. I was wrong, as it now seems that it is bridging itself with another parallel connected wireless router. I have two Draytek 2820 and one Netgear WG602v3 with latest DDWRT. Lets call one wired-Draytek and it has wireless disabled. The other one, let's call it wireless-Draytek, is connected to wired-Draytek and has wireless with MAC filtering enabled. Once I connect Netgear to the wired-Draytek, the client that connects to Netgear, will be assigned with IP address from the wireless-Draytek. If the MAC address is not on the wireles-Draytek, the client is unable to obtain IP address and has no connectivity at all, even with manually assigned static IP configuration. To illustrate further, this is how network is set up: wired-Draytek ---------- wireless-Draytek \_________ Netgear What I wish to have, is that Netgear issues IP addresses from it's own IP pool and ignores the MAC filtering rules from wireless-Draytek. This is kind of puzzling how this they are bridging (if they are) themselves automatically. Thanks. UPDATE: It's not a home network. I gave you a bit simplified set-up. If there is a better site on Stack Exchange to ask this, please let me know. The Drayteks are running stock firmware, it's only Netgear that I've flashed to get more stability. In addition to these routers, I have also three 3COM Baseline switch 2824, and another Draytek router with Prosafe FS752TP PoE switch dedicated for VoIP phones. Wired-Draytek has IP 10.0.0.1, DHCP disabled as there is AD DC which is issuing IP addresses. Wireless-Draytek has IP 1.1.1.1 and DHCP enabled. Netgear has default - 192.168.1.1. As per suggestion, the specific question is - how do I isolate these two wireless routers?

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  • Decreasing lagging on router, while gaming

    - by user2699451
    I had absolutely no idea where to post this question and get a professional answer for it but here goes... Okay, so I guess everyone whos is reading this had played online, and so I was playing LoL again tonight and my brother decided that now was a great time to go on youtube and start watching a movie, so my ping (connecting from South Africa to EU west server) is around 190-220 average, however it started spiking to 2000 and average was 600-800, so it arised the question, how ther hell can I "kick" him off for the time being I tried reasoning it out with him but its like playing chess with a pigeon, he's studying to be an engineer, and I just cant win an argument with him, so i need to step it up a level... I have in the past used the aireplay method by sending deauth packets but it only helped so much, is there another way of either kicking a peer of the local wifi or decreasing the lag spikes while in session or even splitting the bandwidth equally in 2 or 3,etc What do I do p.s. sorry if off topic, if it is not appropriate, just say which website will be able to help or assist me...

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  • How to troubleshoot latency between 2 linux hosts

    - by Jimm
    The latency between 2 linux hosts is about .23ms. They are connected by one switch. Ping & Wireshark confirm the latency number. But, i dont have any visibility into what is causing this latency. How can i know if the latency is due to NIC on host A or B or the switch or the cables? UPDATE: The .23 ms latency is bad for my existing application, which sends messages at very high frequency and i am trying to see if it can be brought down to .1ms

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  • Sharing Windows Folders on a Network... other PCs see but can't access

    - by John
    I'm soooo tired of network setup issues. All I want to do is share a folder and all it's sub-folders so other PCs on my network can view and change this remote location. Why is it that setting a dir to "shared" doesn't actually make it usable in any way? The other PC can see the fodler but is unable to actually open it and look inside. It seems every time I want to do this I go through some semi-random process of right clicking the folder and enabling sharing, then looking in the folder properties to add permissions and other sharing... and then I end up with some folders working but others will randomly block permission on certain files or sub-dirs. I have 5 PCs in my local testing network and I cannot believe it should be this complicated... where is the simple "make this folder work on the network" option?! I have a mixture of XP, Vista & W7 machines, but this seems common to all of them.

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  • some websites not opening completely

    - by mkk
    Hi everybody, I am using bsnl broadband connection, modem: wa3002g1 os: xp(86x) / vista(64x) A few days back I have changed the modem (don't know the previous modem no) because of some issues. since then I am not able to open most of the websites in firefox, IE6/8, chrome, opera. If i connect with other network like reliance data card, those websites are opening, if i connect bsnl the problem will be same again. I called to customer care many times, but no use. Please help me to find the solution. Thank you in advance.

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  • Cable installed - now my hub has no connection the router/modem - what do I need to buy?

    - by bcmcfc
    My previous setup was as follows: [modem/router]------[switch]+------ [pc1] +------ [pc2] I've just moved and had cable installed and I no longer have the option of running a lengthy LAN cable from the router to the switch to provide network and internet access to the two PCs. The cable company provided 2 wireless N USB adapters. What do I need to buy to plug into where in order to restore the network to its previous state? PC1 dual boots Windows 7 and Ubuntu 12. PC2 runs Debian 6. Edit: USB adapters - Netgear WNDA3200 Switch - TP-Link TL-SF1008D 8 port Ethernet switch Cabling - various patch cables cat5e rj45 Modem/Router - pretty standard cable company job - wireless Intention is something like- [modem/router] --wifi-- [some-new-hardware or perhaps to pc1] ----[switch]---[pc1/2]

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  • Why can't connect with second computer in same LAN and settings?

    - by user930450
    I'm trying to connect to WLAN with notebook. The notebook works fine with other WLANs. It can authenticate, signal is "very good" but it says "can't access internet". (On Windows it's small yellow exclamation mark on the signal). With other computer exactly in the same location, with the same settings, it's possible to connect. Both are configurated to get IP dynamically. One difference is that the other computer is using "Ralink wireless" instead normal windows client to connect. But does this make a difference? the settings are the same. What could be the reason?

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  • Appropriate Network switch for small server cluster

    - by Chris Dutrow
    Need to build a small business server cluster for the purpose of crunching data. It will not host a web site that needs to be available 24/7. It does need to support servers that host Redis, a Cassandra database cluster, and a Python web server. Operating system will most likely be Centos 6.4 Other servers in the cluster should be able to communicate very fast with each other, especially the Redis server. This will probably require the use of internal IP addresses. We will need to use multi-data center replication to synchronize the Cassandra cluster with the one that we currently have hosted on the cloud Was looking into network switches and we are unsure of the appropriate specifications that we should be looking for. Does the switch need to be "managed" or can it be "unmanged"? Does the switch need to support IPv6 or just IPv4? Do we need an enterprise level Cisco switch, or can we go with something like a $200 DLink managed (or unmanaged) small business switch? Thanks so much!

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  • Ubuntu hardware wireless switch has no effect after suspend and 13.10 upgrade

    - by blaineh
    I'm posting this on SU after it stalled on askubuntu. I hope someone here can help! If you'd prefer to answer on AU itself, here's the link: http://askubuntu.com/questions/365177/hardware-wireless-switch-has-no-effect-after-suspend-and-13-10-upgrade Wireless works fine after a reboot, but after a suspend the hardware switch (for my laptop this is f12) has no effect on the wireless, it is just permanently off, and shows that it is with a red LED. My rfkill list all reads: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: yes 1: hp-wifi: Wireless LAN Soft blocked: no Hard blocked: yes Any combination with rfkill <un>block wifi doesn't work, although one time first blocking then unblocking actually turned it on again. sudo lshw -C network reads: *-network DISABLED description: Wireless interface product: AR9285 Wireless Network Adapter (PCI-Express) vendor: Qualcomm Atheros physical id: 0 bus info: pci@0000:02:00.0 logical name: wlan0 version: 01 serial: 78:e4:00:65:2e:3f width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=ath9k driverversion=3.11.0-12-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn resources: irq:17 memory:90100000-9010ffff *-network DISABLED description: Ethernet interface product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: eth0 version: 02 serial: c8:0a:a9:89:b4:30 size: 10Mbit/s capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s resources: irq:42 ioport:2000(size=256) memory:90010000-90010fff memory:90000000-9000ffff memory:90020000-9002ffff Also, adding a /etc/pm/sleep.d/brcm.sh file as recommended here simply prevents the laptop from suspending at all, which of course is no good. This question has an answer urging to install the original driver, but it wasn't an "accepted answer" so I'd rather not take a chance on it. Also I'll admit I'm a bit lost on that and would like help doing so with the specific information I've given. I would be happy to provide more information, so long as you're willing to help me find it for you! This is a very annoying bug. I have a Compaq Presario CQ62. Edit. Output of lspci | grep Network: 02:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01) Edit. This morning, I had had the laptop suspended all night, and then when I tried to awake it, it simply wouldn't. It would try, and then it would sleep again (I guess it felt a little bit like me! </badjoke>). Is it possible these problems are related? Edit. I don't have enough reputation on SU proper to post links to pastebins and other questions I've tried, so I'm putting them in comments, and of course they're available in the original question.

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  • windows hosted networok on windows 8

    - by tanmaysingh
    my sister is using Acer laptop, that has an intel WLAN card and supports windows hosted network(checked in command prompt).Am using the basic way using netsh wlan command also, then am using netsh start wlan command.The hosted network gets created and it could b seen in "Network and Sharing Center" as the . I also went to Device manager, selected WLan card, made sure"allow this device to wake computer from sleep" is selected. Now I went to the newly created , clicked properties, and under sharing enabled allow this to be shared(but I am not able to select The name of the wifi my sis wants to share (in this case her college wifi name, LEts say QP4,Ethernet and Local Area connection are the only two option that are coming). Also the SSID name is not being shown in her mobile nor when I click the tower icon at the tray area,Any suggestions on what might be going wrong?She is using windows 8. Should I look for updated drivers? Her laptop is only 6 months old, i don't think the drivers are outdated. Any advice shall be appreciated.

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  • Windows 7 Default Gateway problem

    - by Matt
    I have a strange problem (or at least seems strange to me) the below are IP configurations for two laptops on my home network which consists of a main router 192.168.11.1 and a connected wireless router (i know this can cause problems but has always worked until I got the win7 machine) at 192.168.11.2 with DHCP disabled. Laptop 1 - Win XP IP: Dynamically assigned by main router default gateway: 192.168.11.1 (main router) This machine gets perfect connectivity. Laptop 2 - Win7 IP: dynamically assigned by main router Default Gateway: 192.168.11.2 THIS IS THE PROBLEM... I cannot seem to get this machine to default to the main router for the gateway UNLESS I go to a static configuration which I would rather not do since I regularly go between my home and public networks. Why is my Win7 machine not finding the main gateway the same way that the other laptop is? I believe that the rest of my setup is fine as it has always worked and it works perfectly when set as static ip and gateway. Please help! Thanks

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