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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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  • File sharing from a cable connected pc to wifi connected laptop (windows 7 ultimate)

    - by Aiden Jones
    I have a one desktop running windows 7 ultimate connected to Ethernet cable. And I want to share folder to another wifi connected laptop (also windows 7 ultimate). Both machines are on the same home internet connection. I have tried to share folders by going to properties sharing advanced sharing permissions checked all the boxes to allow all but I don’t see any shared files on my laptop. I know it’s possible to share folders between two Wi-Fi connected machines but how can it be done when one pc is cable connected and other is Wi-Fi connected on the same internet connection.

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  • Will new Acer Revo (with Atom 330) be fast enough to be MythTV client/server?

    - by vava
    As a geek I really like Atom CPUs but can't find a reason to buy one yet :( Although I was thinking about making my own DVR with NAS and media center functionality. Unfortunately, even today's Acer Revo, built on ION platform is not fast enough for streaming Full HD videos. So what do you think, will new two core CPU make it better, will it be able to show Full HD videos, store them to disk and transfer something over the network at the same time? Will it be able to scale videos from Hulu and YouTube to fullscreen?

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  • Is possible to boot on PXE over a WiFi device?

    - by Diogo Rocha
    As I know it is possible to boot up some bootable images (like Linux, Clonezilla, management applications and others) over a PXE (Preboot Execution Environment) server with an Ethernet device (802.3). Can the same thing be done with an Ethernet WiFi (802.11) device? I tested with my notebook but my BIOS appears to not enable booting from WiFi devices. Is it possible with some specific WiFi cards and/or a specific BIOS?

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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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  • Share a USB sound card over a network/bluetooth (Mac & PC)

    - by AlexW
    I've been wondering how I can stream audio to an external Edirol USB sound card, wirelessly, on both Mac and PC. I'm not looking for high quality transmission, just to play mp3s from my Mac laptop to a USB sound card that is attached to two very nice balanced studio reference monitors. Is there any way I can firstly power the sound card box, and secondly, provide with an audio stream along it's USB input. I've looked at the Belkin USB hub, and I have a Time Capsule with the AirPort interface inside. These things seem to do vaguely what I want but when it comes to audio, the specifications are less clear. Any suggestions very welcome.

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  • Accessing my Rails webrick behind proxy?

    - by Eki Eqbal
    In my mackbook, when I try to connect to my rails application in office I can't , in the office there are some http proxy , and when I run my rails like this : sudo rails s -p8080 => Booting WEBrick => Rails 3.0.5 application starting in development on http://0.0.0.0:8080 => Call with -d to detach => Ctrl-C to shutdown server [2012-03-20 12:49:34] INFO WEBrick 1.3.1 [2012-03-20 12:49:34] INFO ruby 1.8.7 (2010-01-10) [universal-darwin11.0] [2012-03-20 12:49:34] INFO WEBrick::HTTPServer#start: pid=17439 port=8080 The local IP is : en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether f8:1e:df:d8:8c:25 inet6 fe80::fa1e:dfff:fed8:8c25%en1 prefixlen 64 scopeid 0x5 inet 10.21.21.240 netmask 0xffffff00 broadcast 10.21.21.255 media: autoselect status: active so when I try in the browser to trigger localhost:8080 or 10.21.21.240:8080 , it seems that I can't trigger my application as for the proxy check out the following : Any Ideas ?

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  • How do I decrypt WPA2 encrypted packets using Wireshark?

    - by Rox
    I am trying to decrypt my WLAN data with Wireshark. I have already read and tried eveything on this page but without any success (well, I tried the example dump on that page and succeeded, but I fail with my own packets). I caught the four-way handshake from another client connecting to the network. My network info is as follows: SSID: test Passphrase: mypass The above info would give this preshared key: 58af7d7ce2e11faeab2278a5ef45de4944385f319b52a5b2d82389faedd3f9bf In Wireshark in the Preferences--IEEE 802.11 I have set this line as Key 1: wpa-psk:58af7d7ce2e11faeab2278a5ef45de4944385f319b52a5b2d82389faedd3f9bf I have tried the different options of "Ignore the protection bit" but none works. What could I have missed?

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  • Does Guest WiFi on an Access Point make any sense?

    - by uos??
    I have a Belkin WiFi Router which offers a feature of a secondary Guest Access WiFi network. Of course, the idea is that the Guest network doesn't have access to the computers/devices on the main network. I also have a Comcast-issues Cable Modem/Router device with mutliple wired ports, but no WiFi-capabilities. I prefer to only run one router/DHCP/NAT instead of both the Comcast Router and the Belkin Router, so I can disable the Routing functions of the Belkin and allow the Comcast Router to But if I disable the Routing functions of the Belkin device, the Guest WiFi network is still available. Is this configuration just as secure as when the Belkin acts as a Router? I guess the question comes down to this: Do Guest WiFi's provide security by 1) only allowing requests to IPs found in-front of the device, or do they work by 2) disallowing requests to IPs on the same subnet? 1) Would mean that Guest WiFi on an access point provides no benefit 2) Would mean that the Guest WiFi functionality can work even if the device is just an access point. Or maybe something else entirely?

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  • Why is Wifi data transfer is slow?

    - by Ali Azam Rana
    I have a wifi router which was attached with my modem, and the pc was connected to the wifi router through an ethernet cable. Yesterday I moved my modem and router to another room and connected my PC with wifi through an external wifi usb dongle (tp-link tl-w722n). I noticed that the file transfer speed from my cell to PC via wifi is greatly affected. I am not clear why is this happening because although PC is now connected through wifi but the dongle supports more than 54Mbps which is still enough.

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  • TP-LINK-8901 modem does not connect automatically; only works in bridged mode [closed]

    - by Arash
    Possible Duplicate: Cannot Connect To Internet In Automatic (pppoe) Mode Of Modem My TP-LINK-8901 modem does not connect to internet with "always on" (automatic) connection. I have to put it in bridge mode and make a connection in Windows to connect to internet. Also, there is no configuration problem. What I did: Reset modem Update firmware Is there any way to solve the problem myself, e.g. through hardware or software? I can't have it repaired because the warranty already expired.

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  • Ip doesn't change when switching networks, although automatic ip is set. Cause of the issue known

    - by Julio Acevedo
    I have two routers at my house. Both of them have DCHP server enabled. One of them is 192.168.1.1 and gives adresses from 192.168.1.2 to 192.168.1.32 The other one is 192.168.1.50 and gives adresses from 192.168.1.51 to 192.168.1.99 The problem is that I only have internet access in one because my ip is 192.168.1.7, and when I switch to the other one, the ip remains 192.168.1.7, even though I have automatically get a ip adress in Ipv4. When I manually change my ip to one in the range allowed by the router, I can browse the internet. Any ideas how to solve this? Thank you.

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  • Can't communicate with Primary DNS Server

    - by horsley
    A computer, with Windows 7, can't access any website by domain suddenly. Whether this computer use a wired link or connect to the WLAN, The fault persists IP and DNS obtained automatically, and seems normal (ipconfig /all return the correct info) I can visit websites by using HTTP proxy The DNS server is available, other computer in my room works properly. I can ping myself, the gateway and any other IP, but domains I can use nslookup and obtain the correct IP info There are some error information in the event log about dns client events explaining the client can not verify the DNS server available Windows network diagnosis explain that Windows can't communicate with the device or resource (Primary DNS Server) I guess the dns client should be blame. I tried to do the following things but the fault persist. Reinstall the driver of network adapter Reset TCP/IP (netsh int ip reset) Reset Winsock (netsh winsock reset) Reset LSP I don't want to reinstall the whole os, what should I do?

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  • How to detect/list rogue computers connected to a WIFI network without access to the Wifi Router interface?

    - by JJarava
    This is what I believe to be an interesting challenge :) A relative (that leaves a bit too far to go there in person) is complaining that their WIFI/Internet network performance has gone down abysmally lately. She'd like to know if some of the neighbors are using her wifi network to access the internet but she's not too technically savvy. I know that the best way to prevent issues would be to change the Router password, but it's a bit of a PITA having to re-configure all wifi devices... and if the uninvited guest broke the password once, they can do it again... Her wifi router/internet connection is provided by the telco, and remotely managed so she can log-on to their telco account's page and remotely change the router's Wifi password, but doesn't have access to the router status page/config/etc unless she opts out of the telco's remote support and mainteinance service... So, how could she check if there are guests in the wifi with this restrictions and in the most "point and click way"? In this case I'd probably use nmap to look for other devices in the network, but I'm not sure if that's the easiest way to do it. I'm not a wifi expert, so I don't know if there are any wifi-scanning utils that can tell us who's talking to the router... Lastly, she's a Windows user as I guess that'll influence the choice of tools available Any suggestions more than welcome Regards!

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  • Can admins monitor my activity locally even when I use a VPN?

    - by Arjun Create
    My school has one of those super overreacting web blockers (specifically Fortisnet) that blocks things that should be accessible by a high-school senior trying to research projects. Despite many students' complaints the administration's hands are tied due to parents' complaints. I have setup a VPN account from http://www.vpnreactor.com. With this I am able to bypass the blocker. I know this service hides my IP from websites and servers on the web. I also know that the school pays an IT guy just to monitor sites and network traffic that the students are using. Basically, will he be able to see my network traffic? More importantly, will he be able to trace it to my computer or its MAC address? I am connecting over Wi-Fi, not ethernet.

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  • What is a good custom MAC address? [closed]

    - by rausch
    My new notebook has been dropping the WiFi connection infrequently. The reason was, that my PS3 had the same MAC address. I changed the MAC address of my notebook and the WiFi is now stable. At first I just reduced the address' last block by 1, which happened to be the MAC address of another device. I reduced it again and for now it's fine. In order to avoid conflicts in the future, is there an address range that is safe to use for custom/non-vendor MAC addresses?

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  • Verizon 4G LTE vs. a LAN

    - by n8wrl
    I have been having quite a bit of trouble getting my new Verizon 4G-LTE service running on a Windows 7 desktop. My desktop is on a LAN here at home with two other PC's. We all share printers, files, media, etc. Until yesterday, we also shared a Verizon 3G modem via a NetGear 3G broadband WAP. That isn't compatible with the 4G so now I am just trying to get the 4G modem working directly connected to one of the desktops. After some USB wrangling, it seems to work. Except, every 7-10 minutes the connection would drop. After some time on the phone with a very nice Verizon technician, it seems to be staying up - it's been up for 20 minutes now. He told me that my LAN was causing the 4G to drop. That traffic on my LAN, even though it is not destined for the internet (ICS not working yet) was causing the cell tower to detect an 'IP change' and a 'security violation' in my modem and drop my connection. Is this Verizon's way of forbidding more than one computer to share a modem? I have my computer running now without a LAN connection and the 4G is still up. But this isn't practical. Has anyone heard of this?

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  • IBM X3200 M2 upgrade and VT-x / usb passthrough for esxi

    - by enzo
    Hi, I have an IBM server x3200 m2 4368-k1g. Only to understand, simply because on IBM support does not exist no more upgrades kit on sale... if I buy a xeon processor, for example x3330 (4core @ 2.6ghz), and put it on my motherboard... 1) it works? 2) on the bios (where now there is no trace about...) will compare a VT-x menu to select and enable? 3) with esxi, once the VT-x is on... I'll be able to have usb passthrough ? Thank you in advance for your reply

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  • Prevent outgoing traffic unless OpenVPN connection is active using pf.conf on Mac OS X

    - by Nick
    I've been able to deny all connections to external networks unless my OpenVPN connection is active using pf.conf. However, I lose Wi-Fi connectivity if the connection is broken by closing and opening the laptop lid or toggling Wi-Fi off and on again. I'm on Mac OS 10.8.1. I connect to the Web via Wi-Fi (from varying locations, including Internet cafés). The OpenVPN connection is set up with Viscosity. I have the following packet filter rules set up in /etc/pf.conf # Deny all packets unless they pass through the OpenVPN connection wifi=en1 vpn=tun0 block all set skip on lo pass on $wifi proto udp to [OpenVPN server IP address] port 443 pass on $vpn I start the packet filter service with sudo pfctl -e and load the new rules with sudo pfctl -f /etc/pf.conf. I have also edited /System/Library/LaunchDaemons/com.apple.pfctl.plist and changed the line <string>-f</string> to read <string>-ef</string> so that the packet filter launches at system startup. This all seems to works great at first: applications can only connect to the web if the OpenVPN connection is active, so I'm never leaking data over an insecure connection. But, if I close and reopen my laptop lid or turn Wi-Fi off and on again, the Wi-Fi connection is lost, and I see an exclamation mark in the Wi-Fi icon in the status bar. Clicking the Wi-Fi icon shows an "Alert: No Internet connection" message: To regain the connection, I have to disconnect and reconnect Wi-Fi, sometimes five or six times, before the "Alert: No Internet connection" message disappears and I'm able to open the VPN connection again. Other times, the Wi-Fi alert disappears of its own accord, the exclamation mark clears, and I'm able to connect again. Either way, it can take five minutes or more to get a connection again, which can be frustrating. Why does Wi-Fi report "No internet connection" after losing connectivity, and how can I diagnose this issue and fix it?

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