Networking :: Can't Obtain IP From Wifi Router Using DHCP?

Sep 29, 2010

I installed PCLOS 2010.07 into my laptop and dual booting with windows vista. Now I got a weird problem that is when I connected linux to my wifi router, it cannot obtain IP! (it still work correctly in windows, problem just with linux) I had to manually set ip and that worked. Now i wonder what is happening, because I didn't see this problem with PCLOS 2009 borrowed from my friend few months ago.

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Ubuntu Networking :: Cannot Obtain DHCP Lease ?

Feb 7, 2010

I have a home WiFi network that has been working fine for ages, which currently supports two Windows-based laptops and a WM5 smartphone. They all connect to the WiFi router (Linksys WRT54G) which in turn connects to the ADSL modem (Huawei MT882). The router is configured with a WEP key, the SSID is not being broadcast, and all MAC addresses must be whitelisted. I try to follow good wireless network security practice. I also have NAT running between the router and the modem.

Everything is working fine for the Windows clients, and now I am trying to add my Linux box to the mix. I am setting up an older HP Pavilion 510a desktop with Ubuntu v8.04LTS, using a Realtek RTL8185 WLAN card. The machine has an onboard RTL8139 LAN adaptor also, which works fine when I plug it in directly to an ethernet port on the wireless router. The WLAN, however, does not seem to be getting a DHCP packet, and keeps on autoconfiguring with a 169.254.x.x address. When I try giving it a static IP address it doesn't connect either.

As you can see from the screenshots below, the WLAN is working fine. I have it installed using the ndiswrapper and Windows drivers. I've been through the Comprehensive ndiswrapper troubleshooting guide but that did not resolve my problem.

I configured the network myself, and it works perfectly for my Windows machines. It is just my lack of experience with Linux which is preventing me from getting the wireless to work under Linux. I can get a HDCP packet in Linux when I am connected to the LAN using the RTL8139 adaptor, but not on the WLAN using the RTL8185 adaptor.

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Ubuntu Networking :: Wireless Connection Cannot Obtain IP With DHCP

Feb 16, 2010

I have router and wireless card Linksys. Driver are installed correctly for wireless card.

Using WifiRadar I can see the access point is detected.

DHCP woks perfectly for wired lan.

However when I try to connect to the detected access point the ip addres is never retrieved and the connection never established.

I tried most of he basic instructions posted on ubuntu forums, but the problem doesn't seem to be with basic configuration: driver, essid, wep key, etc..

The problem seems to be with DHCP not able to retrieve an IP address from the DHCP server of the router. Of course the router works file with other laptops (windows based) that have wireless card.

I also tried the Network Connections setup part of ubuntu. That one shows the access point by its essid name in the list of wireless network, but when I try to connect it takes sometime and eventually asks for the wep key, which I provide and then it times out and keep asking it. The same wep key works for other pcs.
Can't figure it out. I am using ubuntu 9.10.

Some more details are the following:

1) Here the output from the log file: /var/log/wifi-radar.log

Of course it is set ... and dhcp client works for wired lan anyway.

2) diego@mysuperlaptop:/var/run$ sudo iwlist wlan0 scan [sudo] password for diego:

I tried everything I could think about in the UI windows setting (WifiRadar and Wireless Network Connections) a well in the config files from the shell. I just don't get what the deal is. I am pretty sure it is a DHCP issue but can't figure out what.

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Ubuntu Networking :: Unable To Obtain DHCP Through Wireless

Feb 17, 2010

Linksys router and an acer aspire one. I have updated to the 9.10 netbook remix and the laptop associates with the router but will not pickup dhcp. If I specify an address then the machine looks like its connected but will not go to a website. I manually inserted dns but still nothing. So I updated to
linux-backports-modules-karmic-generic
linux-backports-modules-wireless-karmic-generic
Still will not use DHCP , I to am using ethernet at the moment. It was working before the update.

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Networking :: Can't Access Public Wifi BUT Wifi Works On Router At Home?

May 13, 2009

the only error message I can find comes from "dmesg|tail"all it shows is
"no IPv6 router"any body know what is going on here or where where to look for more clues the next time I get around public wifi Oh the windoze washers and apple polishers don't seem to have any problems at all

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CentOS 5 Networking :: CentOS 5 BCM4315 WPA-PSK DHCP Won't Obtain IP Address

Nov 7, 2010

I am having a problem getting a wireless network connection on my DELL laptop running CentOS 5. I have no problem getting a wireless connection when the laptop is booted in Windows XP. I also don't have a problem when booted under CentOS 5 and there is no authentication setup on the wireless router. I only have a problem when I setup authentication. The router wireless log shows the PC connectinng, authenticating, and succeeding authentication.I am using the Broadcom Hybrid-wl wireless driver.

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Ubuntu Networking :: Share Wifi Over LAN To Wifi Router?

Sep 1, 2011

I have a pc which has 2 network cards, 1 wifi and 1 ethernet card.

I'm using wifi card to connect to wifi network (internet) and i'm planing to share this wifi/internet connection via ethernet to wireless router (siemens sx763) so i can have internet on my other devices, e.g. mobile phone, laptop.

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Fedora Networking :: Get The Router To Assign An IP Address Through DHCP?

Jan 24, 2009

I noticed that my internet connection wasn't automatically brought up each time I logged into Fedora so I opened the system-config-network tool and edited my network adapter by checking the box marked "automatically start at boot/login." To my surprise, the connection went down and upon trying to click on the device to let the manager bring up the connection the greyed-out phrase "device not managed" appeared underneath the device name and wouldn't allow me to connect.

Even when I used ifconfig/dhclient to get the connection up nothing happened. I could get the router to assign an IP address through DHCP, pinged a few sites to make sure it was legit, but still couldn't use firefox to browse anything. Seems as if network manager GUI is conflicting with command line attempts to bring the network up. I'd like to permanently disable system-config-network if possible because it's acting screwy!

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Ubuntu Networking :: Server: Dhcp - No Static - Cannot Ping Router ?

Dec 9, 2010

Fresh install of 10.04.1 server; installs seamlessly; finds network no problem.

However, establishing static connection is driving me batty. Will not take. I've reconfigured "interfaces" file several times. My fingers are numb ifdown-ing and ifup-ing and /etc/init.d/network restart-ing.

I have two files in /etc/network ... interfaces and interfaces~ (one static and the other dhcp). I can switch them in and out of play. The dhcp works and pings out like a champ. static is dead, just dead. Cannot ping router ... nothing.

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Ubuntu Networking :: Bypass Router DNS Caching With Public DNS (but Keep DHCP)?

Dec 18, 2010

My router is crap. If I use DHCP it sets all the computers DNS to itself and all DNS requests get cached in the router. It even starts to loose some DNS request if to many are made at once. On my windows PCs this isnt a problem I just set DNS to google's public DNS servers (8.8.8.8 & 8.8.4.4) and bypass my router and ISP alltogether but when i go to pref>network_connections i have to either set DHCP or manual, there is no option to set DHCP with custom DNS.
I'm sure there must be a way to do this in terminal, can someone tell me how?
I'm using ubuntu 10.10.

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Ubuntu Networking :: DHCP Clients Table In Router Is Dropped

May 23, 2011

when I change the hostname on my Ubuntu server, the DHCP clients table in my router is dropped.I'm running 32-bit Ubuntu Server 10.10. My router is a Linksys WRT54GL with firmware version 4.30.15. I'm changing the hostname by modifying /etc/hosts and /etc/hostname. I've also tried changing the hostname using the Linux hostname command in a terminal, but this does not seem to behave correctly according to the manpages (it does not actually change the hostname, or update either of the aforementioned files).

I've also tried using a different router - a Linksys BEFSR41 - but the DHCP table is still dropped when I change the hostname on my server (although this router is not all that different from my other one).

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General :: DHCP Negotiations Consistently Fails To Obtain Lease On First Try And Works On Second Try

Jul 16, 2010

I'm having some problems bringing up my wireless card at boot time on my Red Hat Linux 9.0 box. After some investigation with the boot scripts, I noticed that it was having problems with the DHCP negotiations when the ifup wlan0 command is issued.I then tested the command outside of the booting process and everytime the command is issued the first time, the dhclient fails to get any DHCP offers and returns with the message Unable to obtain a lease on first try. Exiting. and then exits.

If I then issue the same ifup command again a second time, it successfully receives a DHCP offer from the router and receives the needed IP address, and after this, the Internet connection on the box works fine. It is consistently doing this everytime. Why is it failing to obtain a lease the first time?

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Networking :: Getting An Ip Address From The DHCP Router, But Cannout Ping Any Other Ips Or Connect To The Internet?

Jan 31, 2010

I've only been using linux for a few days so I don't know all the tricks. I'm pretty savy configuring windows networks however.My adapter is (according to windows) a: CNet PRO200WL PCI fast ethernet adapterLinux says it is a: 21x4x DEC-tulip compatible 10/100 EthernetI do seem to be getting an ip address from the DHCP router, but I cannout ping any other ips or connect to the internet.I've tried a bunch of different options, switching things back and forth, but it still doesn't work, and honestly i don't even know what some of the options mean.

ALSO, if this helps:
paladin:~ # ifconfig eth0
Eth0 Link encap:Ethernet HWaddr 00:08:A1:03:3C:99

[code]....

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OpenSUSE Network :: Obtain The RPM For WiFi Radar?

Aug 16, 2011

I'm running 64 bit openSUSE 11.4 with KDE. I would like to install Wi Fi Radar. where I can obtain the RPM for it? I have looked but can only find older versions of it for older versions of SUSE..

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OpenSUSE Network :: KNetworkManager Connection - Never Obtain An IP Address From Wireless Router

Feb 24, 2010

I have an open WEP wireless internet connection with a security key. KNetworkManager can never obtain an IP address from my wireless router, but I know that the router works because Windows can connect correctly and Ubuntu's NetworkManager can connection correctly. Does anyone know what is happening? KNetworkManager just asks for my security again and again and again after it fails to connect.

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Ubuntu Networking :: Cannot Connect To WiFi Router

Mar 15, 2011

I think I have unique problem. I have a d-link DWL G510 rev c.(Austrailian) WiFi card in my pc which is detected as

Quote:

Network controller [0280]: RaLink RT2561/RT61 rev B 802.11g [1814:0302] in lspci -nn.

iwconfig shows:

Quote:

lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bg ESSIDff/any
Mode:Managed Access Point: Not-Associated Tx-Power=6 dBm
Retry long limit:7 RTS thrff Fragment thrff
Power Managementff
ppp0 no wireless extensions.

Now sometimes it detects my wifi router and shows its ssid in nm-applet. but when I try to connect, it tries for 3 or 4 minutes and then fails. for most of time it even does not finds my router.

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Ubuntu Networking :: Logging Into WiFi Router

Jun 17, 2011

I have a Dell Studio XPS15 laptop running 11.04 which works flawlessly with my router (it's a broadcom card btw). Now I'm setting up a new laptop for my Father-in-law which is a Dell Inspiron 15 which has intel Centrino 1000 wireless. I've installed and setup 11.04 on it. Everything runs great except..

Now it can see all the access points around so I assume the wireless card is properly detected and working. But when I try to log into my router and give it my password, it just keeps trying to connect and can't. I've double checked the settings with my own laptop and everything seems the same. why it won't log in? I'm leaving it as a dual boot with Win7 and I know that Win7 will log into the same router with the same password.

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Networking :: Home.asp Application On Wifi Router?

Sep 9, 2010

I updated a firmware of my wifi router (small black box with antenna). The router is managed via web browser at address 192.168.1.100. I opened Mozilla Firefox connected to the router, but a 'home.asp' application - an interface one can to set up a configuration - running on the router didn't work properly. When I tried to change some settings, and eg. clicked a confirmation button nothing happened. I solved the problem staring Windows and making a connection using IE - this time that home.asp application did OK. The question is what may caused problems? A bug in this app or in general *.asp applications don't communicate well with browsers other than IE or simply they don't 'like' Linux?

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Ubuntu Networking :: Setup As Router Box And WiFi Hotspot?

May 12, 2010

I've got an Ubuntu box set up as a router and wifi hotspot. I can access the internet and any website using this box. I can connect a laptop to my wifi access point, and connect to both the router box and the internet. I'm writing this message from it. If I access either hsbc Hong Kong internet banking or speedtest.net from my laptop I can't connect. Every other site I've tried is fine. What could be causing this? I don't know where to start. I've set up the firewall rules and routing tables, so I vaguely know what I'm doing... but clearly not enough to debug this issue.

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Ubuntu Networking :: See The Manufacture Of Wifi Router/card?

Sep 7, 2010

Is there a way to see the manufacture of wifi router/card remotely like "inSSider" shows, for example ???

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Ubuntu Networking :: WiFi Router Connects But No Internet?

Nov 11, 2010

trying to run 10.04 netbook live from a memory stick with a view to installing it on my laptop. However although I can see my wireless router and connect to it I cannot access the internet. I have tried this on my laptop and desktop with the same result. I was however able to download Seamonkey browser using the software manager....this also cannot access the internet. Both of my PC's have no problem when using XP or Linux Mint.

I have also discovered that if I piggyback, using Ubuntu 10.04, on a neighbours open wifi link I can gain access to the internet. My wifi is using WEP protection but as I said I can set the link up to the router, entering the appropriate key code, and have a good signal strength, I just cannot access a google search page.

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Ubuntu Networking :: No Wireless Or Wifi 10.10 Following Upgraded Router?

Dec 14, 2010

Upgraded broadband service yesterday and now using a combined router and modem (Virgin Media Hub). But I now have no wired or wifi internet connectivity on either of my ubuntu 10.10 systems. I tested it on my work laptop which uses Window and it works fine for wired and wifi.

With 10.10 I no longer have a network icon upper right panel to check, so not sure how to set up wireless. Both machines have static IP addresses and are able to ping each other but there is no internet connection on either.

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Ubuntu Networking :: Wifi Router & Firefox Thunderbird?

Apr 2, 2011

am having some problems with getting a pc to use the above software. background is my wife wanted access to mail in her "office". purchased a Tenda wireless router and installed ok (with TPlink pci wireless card on her pc). am using latest version of ubuntu (10.10 x64) on her pc and went to use firefox - timed out, same with evolution and thunderbird. synaptic works fine, opera and google chrome work fine. i'm guessing some sort of tweaking of the router is required but not sure where to start.

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Ubuntu Networking :: Set Wifi Router's Password In Terminal?

Jun 26, 2011

I am using an Asus R2 G32 Wifi Router. The CD's and the manual that comes along with the Router does not support Linux . Now the wifi connection was installed in Windows 6 months back with a password and but it got reset to default somehow. Now i want to set password again. Whenever i try to log in 192.168.1.1 in my browser, and Change the password and select Apply . Nothing happens to the page, as if it is static. No Submit Buttons work in this. Um a bit in mess ryt now as my wifi is vulnerable to any1 ryt now.

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Networking :: ARP Packet From WiFi Router - Ping Not Working

Jun 15, 2011

I am trying to get an arp packet from my wireless wifi router (access point), to which I am not connected. I simply tried ping 192.168.0.1, but the answer was connect: network is unreachable. What can I do about that?

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Ubuntu Networking :: WiFi Adapter WUSB600N V2: Module Detected But No Connection - DHCP Error

Nov 20, 2010

I have just started to work on Ubuntu (Ubuntu 10.4 LTS) and I am having some problems to get a WUSB600N vers. 2 802.11n adapter working. I have followed the procedure described at [URL] . The compilation has been successful and I can see the kernel loaded an the module detected:

Code:

adrien@ubuntu:/$ lsmod | grep rt3572
rt3572sta 612272 1
adrien@ubuntu:/$ lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

[code]....

The wireless adapter is detected by the system and it can scan the neighboring APs (cf. below with MAC address made unreadable):

Code:

adrien@ubuntu:/$ sudo iwlist ra0 scan
[sudo] password for adrien:
ra0 Scan completed :
Cell 01 - Address: --:--:--:--:--:--:--
Protocol:802.11g

[code]....

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Debian Configuration :: Wifi Cant' Obtain IP On Lenny With B43xxx / Sort It?

Nov 20, 2010

I'm new on debian, could someone help me out configuring out my wifi connection?
I can't obtain an Ip i already installed b43xx for my chipset broadcom with wicd manager it seems to detect a wireless
connection but when i tried to connect it can't obtain an ip.

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Ubuntu Networking :: Jaunty Wifi Very Slow - 327W Router

Jun 14, 2010

I was introduced to Ubuntu about a year ago and recently decided to come back to using the OS. I now dual boot it with Windows XP Home. My former setup was with Wubi but now I have it installed on an actual partition. (The Wubi install, for whatever reason, had little internet problems.) I use wireless internet, and though my network card was recognized out of the box and can connect to my network, the Internet is very slow. It takes almost a minute to look up Google. Also, Firefox will often report that it cannot find the server for whatever website I try to look up, after trying to connect to it/look it up. I also cannot access the web configuration page for my router. (192.168.1.1). The network app reports that I often have a signal strength of 40% or lower. The following is my hardware/internet:

Ubuntu 9.04 Jaunty
TrendNet TEW-424UB adapter (54mbps)
Westell VersaLink 327W router
ISP: CenturyTel/CenturyLink High speed internet (512kbps)

I am the only Linux computer on my network. (There is no encryption on my network. I know there should be. but my parents are not very computer literate and they are the ones who have access to the network. It is easier just to go without.)

I have tried disabling ipv6, setting custom DNS server names under ipv4, and setting the wlan rate (or something similar) to 1492. Nothing works. This does not seem to be a network problem because my internet works fine in Windows, and I can access the configuration page for my router to change channels, PPP, etc..

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Ubuntu Networking :: Wifi Status Only Works As Root With New Router?

Jul 27, 2010

I recently bought a new wireless router (Cisco E1000) to use in my house. The E1000 supports mixed-mode 802.11n/g/b, which is what I have enabled. It is the first 802.11n router I've had. My netbook (an HP/Compaq Mini 110) only supports b/g. When connected to this new router, I can only see my status as root. NetworkManager shows a little red exclamation point, and 'iwconfig' shows nothing. It's missing in the 'iwlist scanning' list. Even still, I'm connected and can do everything just fine. However, everything shows up fine when I run 'sudo iwconfig' or 'sudo iwlist scanning'. These have always worked as a standard user before.

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Ubuntu Networking :: Wifi Router Recognised Can't Connect To Internet?

Jan 7, 2011

After forgetting my wifi router password, I had to reset and reconfigure the router. I enabled WEP, and after I typed the password, the computer now recognises it automatically. But I can't connect to the internet no matter how long I wait. (The wired internet connection works fine.) How can I get the wifi to connect to the internet?

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