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• Problem connecting to certain wifi networks

  - by Romas

  I'm using lenovo u300s (it has Intel Centrino Wireless-N 1030 card), and I can connect to wireless network at home with no problem, but I can not connect to any networks at my university. I'm not sure if it's the case but most of university networks are open and you need to sign up your username as you enter browser. There is also an eudoroam network, but I can not connect to it either. Any suggestions? Yes I have the latest ubuntu version.

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• 13.10 suspend kills wifi

  - by ser

  i tried to post to this thread Hardware wireless switch has no effect after suspend and 13.10 upgrade for if i understand their question i am having the same problem but the answer option won't work for me and maybe i am not supposed to post there anyway, i dunno lol...ack when i come out of suspend, the wireless is disconnected with the only way to get it to reinitialize/be recognized is to do a full restart. at first i thought it was my gnome shell (for lock screen disappeared there with 13.10) but when i switched to the default ubuntu it's still doing it and it's kinda driving me nuts for i have to reopen all my files and browsers/tabs/windows everytime. i'm only a geekling so i don't know how to show the terminal stuff the above asker shows, but it sounds like the same issue and it only started with 13.10 upgrade a few days ago. any help would be much appreciated!!! thanks so much ser

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• No WIFI on Ubuntu 12.04 LTS after today software update

  - by Adchara

  I just got new dell inspiron3537 with Ubuntu 12.04 LTS (no windows O/S). It got some wireless (hard block) yesterday. So, this morning, I ran the software update all the security update. After that I can't see "Wireless" in system setting. So, I updated all the software update and looked thru several web site and found "sudo lshw -c network" command. I tried and found the result below. *-network description: Ethernet interface product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:01:00.0 logical name: eth0 version: 07 serial: 74:86:7a:40:5d:48 size: 100Mbit/s capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full ip=192.168.1.10 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s resources: irq:60 ioport:4000(size=256) memory:c0700000-c0700fff memory:c0400000-c0403fff *-network UNCLAIMED description: Network controller product: QCA9565 / AR9565 Wireless Network Adapter vendor: Qualcomm Atheros physical id: 0 bus info: pci@0000:02:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:c0600000-c067ffff memory:9fb00000-9fb0ffff Please suggest what I should do to fix it. Thx in advance

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• How do I install Inventel UR056g usb wifi?

  - by kuberprok

  I am am using a Inventel UR054g (R01) usb wireless adaptor on my desktop. I had quite trouble setting it up but after installing ndiswrapper and prism2 drivers I got it up and running. However, I need to run in the command line the following to get it started; sudo dhcpcd wlan0 I want this top start automatically when I restart the PC. Further, I aslo want this connection to be available to other users. Any help would be appreciated.

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• System for public internet access

  - by Pydev UA

  I'm looking for solution for a public wifi spot.. I want that all people who connect to our wifi network should be redirected to special website(after they open any internet page) where they should reed and agree with our terms of services(by clicking a button). After that they can open any internet page. I have a router and a linux box with site(with agreement page ready), so I'm looking for some software/or hardware solution for this, preferable open-source.

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• Why is adhoc connection without internet faster than via router?

  - by user29951

  Hi, I'm transferring some data from my desktop to my laptop trough wifi. My home network is managed with windows 7 homegroup When my 2 pc's are connected via my router (with internet access) i get max 200 KB/s and when i create a ad hoc wifi i get 1.5 MB/s why is that... (copying data via network name ex: \\PC2)

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• failed to connect to internet ?

  - by raj

  New wifiadapter that is able to identify the router but connection cannot be established? OS Win 7 Another laptop with wifi is able to connect to internet through the router but not using this wifi adapter.

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• How to provide wireless internet in a small business?

  - by ColinYounger

  My wife has a small business that she wants to offer a free WiFi hotspot in. She suggested opening up our private 'net connection to the customers - T&Cs of our internet provider and thoughts of random people viewing kiddy porn floated through my mind. So, first action will be to get a separate internet connection. But I have no experience of setting up a public WiFi connection. What considerations should I make with regards to: WAP Security Access logging?

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• How to provide wireless internet in a small business?

  - by ColinYounger

  My wife has a small business that she wants to offer a free WiFi hotspot in. She suggested opening up our private 'net connection to the customers - T&Cs of our internet provider and thoughts of random people viewing kiddy porn floated through my mind. So, first action will be to get a separate internet connection. But I have no experience of setting up a public WiFi connection. What considerations should I make with regards to: WAP Security Access logging?

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• Windows 8 & Hyper-V Can't Bridge Wifi Connection

  - by xinunix

  So I have an odd issue that I can't quite figure out... I am running Windows 8 Enterprise on a Dell 6420 laptop. I have a Broadcom 802.11n wireless adapter. I am connected to an home router (Netgear WNDR3700) that is connected to the internet. It is a very simple home network setup. I am trying to stand-up a few VMs in Hyper-V and want the VMs to be able to access the internet over my wireless connection. I have found numerous examples of how to set this up using both External and Internal Virtual Switches but have yet to be able to get it to work on my machine. I have narrowed the issue down to the fact that my host machine always loses internet connection when I bridge my wifi connection (both when it is bridged automatically by windows when I setup an external virtual switch bound to the wifi adapter or if I do it manually by creating an internal virtual switch, right click on it and my wifi network and select "Bridge Connections".) In both cases after the bridge is established, my host machine can no longer connect to the internet. I am not sure where to start with troubleshooting this problem. After the bridge is setup, an ipconfig shows all netowrk devices on the machine as "Media Disconnected". I do know that the wireless adapter is connected to the router b/c it shows the connection as active and full-strength. The only thing I can possibly think of is that this machine also has the Cisco VPN client installed on it which installs a Cisco Virtual Network Adapter. Is it possible that this Cisco Virtual Adapter is causing me issues when I try to bridge? I saw some people had a similar issue with a VirtualBox virtual adapter when trying to share via Hyper-V. Any thoughts or suggestions on how to troubleshoot?

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• Macs don't connect to wifi access point but PCs will

  - by Josh

  So, as a side project I'm going to try and figure out why the wifi APs in my building exhibit the following behavior: - They typically allow all types of computers to connect without issues - Sometimes Apples can't get an IP address but will still connect to the AP's signal - Less often, PCs can't connect to the wifi (same as above - yes signal, no IP addy) - Don't let Raiders fans on no matter the time of day! My first thought was that the DHCP leases were all taken up when the Apples would try to connect, and it was just their unlucky timing, but I would then try to log on with a PC that had a new, unleased MAC address and it would work... Could this be something to do with interoperability between an apple wifi card, and the APs? Different parts of the DHCP lease being taken up first? The fact that the Seattle Mariners might actually be good this year?? If this hasn't used up everyone's patience (with my crappy sports jokes), something else I could use some help with: - We don't have the model or type of AP - This is because there is no documentation available for them, and they literally look like small white boxes with no writing on them. Also, the company that installed them is out of business, so the situation might be that no docs will ever be on the way. -- Do you guys have any ideas on how to figure out what we have? Thanks as always for all the help, and I'm looking forward to the day when I know enough to start contributing back to the site, Josh

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• Host spreads wrong MAC Adress of router on the WIFI

  - by JavaIsMyIsland

  Strange things are going on our network. Since yesterday a host which is actually not on our subnet spreads wrong ARP Replys on our network. To be precise, only on the WIFI. If I connect my Laptop to the cable ethernet, it gets the right MAC adress of the router. Also my Android phone and my Ubuntu system do get the right MAC Adress. So I took a look at wireshark. When I clear the ARP cache of the windows machine, the first ARP response is correct and comes from the router. But like 10 ms later another ARP response comes from another host in the WIFI. The host changes its IP Adresses from time to time and they look like they are not on our subnet. So I can not use the internet because DNS is not working anymore. Sometimes the router wins the race condition and the mac adress is set correctly in the arp cache. I first thought, this is an arp-poisoning mitm attack but it does not make sense if the packets get not routed correctly?! I restarted the router but it didn't help. I have no access to the router, else I would change the shared key to make sure there is no intruder on the wifi.

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• Connection problems via Wifi (multiple devices)

  - by Kelvin Farrell

  I'm having connection issues with my router (Linksys WRT610N) at home. There are a number of things that are happening (may be more, this is just what I've mainly noticed)... 1) Using my laptop (Macbook Pro OSX Lion), I am unable to complete any operations with my external FTP server, hosted with FatCow. I can connect to it, navigate through all the files, but when I try to edit/delete/add a file the operation times out. EVERY time. I've used two other Wifi connection on my laptop and neither have this issue. 2) I am unable to upload photos/videos to Facebook or Twitter using my phone (Samsung Galaxy S2) or my tablet (HP Touchpad - CM9). Neither am I able to upload files to Dropbox via either of the devices. Same thing happens in all situations; the upload will begin and it will just hang on 0% forever. After about 10 mins I am always forced to disconnect the Wifi to stop the action. 3) My laptop is having slow internet speed, even though we are on 20mb broadband. Speedtests say I'm getting a good connection and my Ping is good, but when using streaming services like Spotify, it takes forever to load a page and frequently stops to buffer whilst playing a song. Don't know if it's worth mentioning but I have no issues with my XBox (Ethernet), AppleTV (Wifi) or my girlfrield's phone (Nokia Lumia 800 - WP7.5) on the network. I'd really appreciate any help. This is driving me insane and is really affecting both my working and leisure use of the internet.

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• Routing WIFI and LAN for specific traffic

  - by jakebird451

  I have two network devices aboard my macbook pro: WIFI (en1): Used for general traffic. Connects to an ip of 192.168.19.* via DHCP LAN (en0): Used for specific traffic. Connects to an ip of 192.168.2.10 as a static IP. Does not connect to a router, only a switch for direct routing connection. I have 4 IP addresses I need to access on the LAN: 192.168.2.1 192.168.2.21 192.168.2.20 192.168.2.30 The rest of the traffic needs to go to WIFI. I have tried setting up a routing table for the specific ip addresses, but I only managed to mess up my network. I do not venture out into the world of networking too often, but this was the latest command I have been trying: sudo route add -host 192.168.2.30 -interface en0 This command killed my ability to use ping. It told me that ping could not allocate memory (is that even possible)? It also killed my wifi access. Logging out and back in fixed the issue. I really do not mind to make this solution permanent, so I am fine with a temporary routing.

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• Can only ssh when not using wifi

  - by AChrapko

  So I have 3 machines, a windows 7 desktop that is always wired to my router, osX laptop, and raspberry pi running debian linux. My router is a Linksys e1000 wireless N. My goal is to be able to ssh the raspi from any machine, while it is connected via wifi. My problem is that when trying to ssh from either the win7 or osX to the Pi it either times out, or gives an error: "ssh: connect to host 192.168.1.### port 22: No route to host" The only times that I have managed to connect to the pi from any machine were when it connected to the router via an Ethernet cable. Currently with win7 desktop wired, macbook wireless, and pi wireless tests give the following: win7 ping macbook: Destination host unreachable. macbook ping win7: Request timeout. win7 ping pi: Destination host unreachable. macbook ping pi: Request timeout. blah blah blah Plugging the macbook into the router with an Ethernet cable all communication between win7 and macbook works. Pings, ssh, ftp, smb ect... No changes to the pi, still no connections possible to or from any of the other 2 machines. Note All machines, are able to connect to the internet and ssh to the same machine on a completely different network, wired or over wifi. Plugging the Pi in with Ethernet (and macbook still wired) I can ssh to the pi from both win7 and macbook. I can ssh from the pi to macbook. All machines still able to connect the the off network machine. Also another little side note- I was playing warcraft 3 with my roommates the other day, and the only time they were able to see my LAN game was when they were plugged into the router with an Ethernet cable. Once or twice one of the laptops was able to connect over wifi, but not without another computer connecting first via Ethernet. So basically does anyone have any info as to why my router seems to completely ignore local wireless traffic?

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• disconnect to wifi progammatically

  - by www.ruu.cc

  Could i disconnect to wifi progammatically in cocoa ?

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• Dell Upgrade to 12.04 LTS No wifi, graphic card driver and bluetooth Problem?

  - by Mattlinux1

  (Dell inspiron m5040 Upgrade to 12.04 LTS from 11.10 wifi wont work and has two bluetooth icons?) Old title of post! No Wifi/Bluetooth Problem. "Both Fixed", see below comments for bluetooth fix and see bottom answer for wifi fix. My online upgrade of 12.04 LTS, was installed to my laptop the Dell inspiron m5040, when it was done i found that my wifi did not even get picked up anymore and i now have two bluetooth icons at the top?? So what i have been doing for now is at the boot screen. I hit the use previous linux version, this works fine but also has the two bluetooth at the top. Is very thankful for any answers for this fix, Thank You. Ok bluetooth problem solved by – fossfreedom answer by deleting the other bluetooth program running in software center. Now the other problem is Wifi: just have to restart system as it works in previous linux version boot opt, but on the first boot screen opt run ubuntu it will not pick up wifi drivers. Broadcom 802.11 Linux STA wireless driverfor use with Broadcom's BCM4311-, BCM4312-, BCM4313-, BCM4321-,BCM4322-, BCM43224-, and BCM43225-, BCM43227- and BCM43228-basedhardware. And 3D-accelerated proprietary graphics driver for ATI cards. This driver is required to fully utilise the 3D potential of some ATI graphics cards, as well as provide 2D acceleration of newer cards. will not instill is there anyway for me to make a copy of the drivers via usb HDD and then put them on new upgraded version.

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• Ad-hoc network(hot spot created) not detected by android phone

  - by Nirmik

  I created a hot spot via network wireless use as hotspot. Other laptops successfully detected the hot-spot,could connect and use it without any problem. But no android phone could detect it.! I tried with many android phones but none could.(I found out that even an ad-hoc created in windows is not detected by any phone) So is there anything wrong i am doing(rather i am not doing anything actually other than clicking on the "use as hotspt" button..but still..)? or is that the network cannot be shared with phones? and if not,how can i share it with phones?

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• Direct Link to IRC Server with Double ##

  - by bemental

  Trying to create a direct link to an IRC channel with double octothorpes (##). Freenode policy dictates off-topic channels require ## before the channel name. This O'Reilly 'hack' post gives solid instructions for how to link to a channel and open in the default client on a system, but no guidance for channels with doubles. Links to single channels are formatted as "irc://irc-server:port/channel?key"

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• How to customize the re-direct page when a user tries to access a blocked site

  - by user42891

  How to customize the html page which is re-directed when a user tries to access a URL which has been blacklisted by squid proxy server. acl blocksites url_regex "/etc/squid/squid-block.acl" http_access deny blocksites I would like to re-direct to a custom HTML page explaining why he is not allowed to go the blocked site or send him to an empty page.

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• What kernel modules are required for wi-fi to work?

  - by Leonid Shevtsov

  My custom-built 2.6.32 kernel cannot connect to any WPA-protected network. The kernel includes (probably?) everything that should be needed for wifi, including IPv4 network support (IPv6 is disabled), the ath5k wireless driver (which is used in the generic Ubuntu 2.6.31 kernel) and all crypto APIs. The card is being detected, however, iwlist scan returns wlan0 Failed to read scan data : Network is down and network-manager log says <info> (wlan0): driver supports SSID scans (scan_capa 0x01). <info> (wlan0): new 802.11 WiFi device (driver: 'ath5k') <info> (wlan0): exported as /org/freedesktop/NetworkManager/Devices/1 <info> (wlan0): now managed <info> (wlan0): device state change: 1 -> 2 (reason 2) <info> (wlan0): bringing up device. <info> (wlan0): preparing device. <info> (wlan0): deactivating device (reason: 2). supplicant_interface_acquire: assertion `mgr_state == NM_SUPPLICANT_MANAGER_STATE_IDLE' failed <info> modem-manager is now available <WARN> default_adapter_cb(): bluez error getting default adapter: The name org.bluez was not provided by any .service files <info> Trying to start the supplicant... <info> (wlan0): supplicant manager state: down -> idle <info> (wlan0): device state change: 2 -> 3 (reason 0) <WARN> nm_supplicant_interface_add_cb(): Unexpected supplicant error getting interface: wpa_supplicant couldn't grab this interface. The exact same configuration works with the generic kernel. Is anything except wifi and crypto api needed for wi-fi to work?

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• openvpn port 53 bypasses allows restrictions ( find similar ports)

  - by user181216

  scenario of wifi : i'm using wifi in hostel which having cyberoam firewall and all the computer which uses that access point. that access point have following configuration default gateway : 192.168.100.1 primary dns server : 192.168.100.1 here, when i try to open a website the cyberoam firewall redirects the page to a login page (with correct login information, we can browse internet else not), and also website access and bandwidth limitations. once i've heard about pd-proxy which finds open port and tunnels through a port ( usually udp 53). using pd-proxy with UDP 53 port, i can browse internet without login, even bandwidth limit is bypassed !!! and another software called openvpn with connecting openvpn server through udp port 53 i can browse internet without even login into the cyberoam. both of softwares uses port 53, specially openvpn with port 53, now i've a VPS server in which i can install openvpn server and connect through the VPS server to browse internet. i know why that is happening because with pinging on some website(eb. google.com) it returns it's ip address that means it allows dns queries without login. but the problem is there is already DNS service is running on the VPS server on port 53. and i can only use 53 port to bypass the limitations as i think. and i can not run openvpn service on my VPS server on port 53. so how to scan the wifi for vulnerable ports like 53 so that i can figure out the magic port and start a openvpn service on VPS on the same port. ( i want to scan similar vulnerable ports like 53 on cyberoam in which the traffic can be tunneled, not want to scan services running on ports). improvement of the question with retags and edits are always welcomed... NOTE : all these are for Educational purpose only, i'm curious about network related knowledge.....

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• ddwrt client brigde acces point lost

  - by llazzaro

  Ok I have an AP with ddwrt firm (i know its not the best, but continue reading!) AP is configured to work like a wifi "transparent" brigde, also it had a virtual wifi network card to expand radius of wifi signal in that same AP. The brigde is working, computers behind AP gets ips from main routers which shares internet....BUT! I cant access webgui of the bridge AP... Main problem : AP is lost, but its working as brigde. I cant find it in the network (it didnt have any ip!) so I cant change any configuration... First solution : Reset AP, but it cannot be done. Reset button dont works due to a bug in ddwrt micro firm that mi linksys WAP54g had installed (I really hate this firmware I like more openwrt that my main router has) Second Solution : arp -a from main router , from computers behind AP...It dont appears in the list. Any more ideas, the router at some level must be there, the brigde is working. I know its possible that the AP is with an ip like 192.168.100.2 , my subnect actually is 172.16.X.X. :) thanks!

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• Keep getting invalid IP via WiFi

  - by nmuntz

  There is something wrong with my WiFi. I keep getting an invalid IP via DHCP (169.254.x.x), this happens for ALL wifi connections (home, office, etc). If I try a Local Ethernet connection via cable it works fine. I have tried downloading the latest drivers for my wireless adapter, resetting the TCP Stack and still have this issue. One strange thing I notice is under Device Manager, Network Adapters I have 4 "Unknown Devices" and three "Remote NDIS based Internet Sharing Device". My guess is that this belongs to McAfee. Not sure if this is related or not, anyways to try to fix this I tried downloading the NetLUIDfix.exe utility from McAfee but it didn't work. Any ideas how to solve this annoying issue? Thanks!!

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• UDP multicast streaming of media content over WIFI

  - by sajad

  I am using vlc to stream media content over wireless network in scenario like this (from content streamer to stream receiver client): The bandwidth of wireless network is 54 Mb/s and UDP stream's required bandwidth is only 4 Mb/s; however there is trouble in receiving media stream and quality of playing specifically in multicast mode; means I can play the stream but it has jitter and does not play smoothly. In uni-cast I can stream up to 5 media streams correctly, but in multicast mode there is problem with streaming just one media! However when I stream from client some multicast streams; the wifi access-point can receive data correctly and I can see the video in "udp streamer" side correctly even when number of multicast streams increases to 9; But as you see I want to stream from streaming server and receive media in client size. Is this a typical problem of streaming real-time contents over wireless networks? Is it necessary to change configurations of my WIFI switch or it is just a software trouble? thank you

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