Ubuntu Networking :: Established Connection But Not To Browse

Jul 5, 2011

there is an open wireless i can connect it -in ubuntu- but can not browse anything.we tried to connect via mobile it's working fine ,in addition via Windows XP it's fine ,but not in ubuntu why???!!

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Ubuntu Networking :: Wireless "connection Established" No Browse No Ping

Jul 7, 2011

Ubuntu 11.04, wireless adapter BCM4312.The connection works for a while, for a random length of time from a few minutes to a few hours, then stops working. The laptop says it's connected, and the router says it's connected, but the browser can't find any Web pages, it can't find the router, and there is no response to pings from the router or any other device on the local network or on the Internet. "Host unreachable." When I try to ping to the laptop from another one, it times out.If I shut down the computer and try again a few hours later, it works fine again for a while, then after a while it stops working again.

In case it's relevant, sometimes when I restart networking from the command line, it says "ignoring unknown interface eth1=eth1," even though ifconfig -a lists eth1 as up with an ip address. eth1 is the wireless adapter. Another laptop with Ubuntu 11.04 connects to the same router with no problems.Using a fixed IP address doesn't change anything.

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Networking :: Openvpn Connection - Can Not Ping When Connection Established

May 8, 2010

I have problem in making connection to my vpn server I can make connection from windows xp to that but can not open any website and I can not ping when connection established.

These are my configuration files:

server config file:


client configuration file:


And this is my server syslog tailed file:


And I added this routing to /etc/rc.d:


And this is my iptable:


And vpn connection is lost after establishing a lot.

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Networking :: Run Script When Connection Established?

Jun 10, 2011

I was wondering, on a GNU/Linux system including but not limited to *ubuntu, how would I go about determining when the network connection is established on any interface, so I can run a shell script only once at that exact time?The idea that comes to mind is polling-and-sleeping, but I'd like to know if there is another, more robust way? Like an onconnectionestablished javascript event or something.

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Ubuntu Networking :: Run A Program When Network Connection Is Established

Jan 5, 2010

I want a program (shell script) to be executed as soon as my DHCP connection is established successfully. Is there any way I can do this ?

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Ubuntu Networking :: Connection Is Established But Not Able To Connect To Internet In 11.04?

May 21, 2011

I bought my new Dell inspiron N1401 64bit laptop. It has windows 7 installed in it, I am begineer to linux. I have installed Ubuntu 11.04 64 bit version. I have a wired internet connection which works fine with my windows 7. When I switch to Ubuntu, when internet cable is plugged, the top right corner, network manager shows connection is established, but when I open firefox I cannot access internet. I tried searching on forums, but I could not make it work. If I type ifconfig command in terminal attached is the output I get, I dont know what is the problem. I want to use Ubuntu than Windows

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Ubuntu Networking :: Internet Connection Is Established But Can't Open Any Sites At All

Feb 13, 2011

I see something like internet connection is established. Ive established etho connection but I cant open any sites at all. I also have Windows on another hard disk and it works well. About a week ago I had Ubuntu 8.04 and it worked really fine. What�s wrong? Is there any remedy?

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Networking :: Shell Script Should Switch If Connection Established But Doesn't?

Jan 18, 2010

I have created the following script

interface=`ifconfig | grep -iE "(wlan0|gprs0)" | awk '{print $1}'`


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Ubuntu Networking :: Sharing Connection - Get "connection Established" *pause* "disconnected"?

Jul 26, 2010

my netbook shares it's wireless connection to my desktop. i've done this through the gui (edit connections > eth0 > ipv4 settings > shared to others) and it has worked for the last i don't know how many months.recently it had become a bit touchy with regards to how it was set up. it didn't work unless the netbook was already booted and wired in at the time of booting the desktop.now however it's gotten even worse and all i get when i connect them together is

"connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" and so on.

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Ubuntu Networking :: Ubuntu 10.04 TLS Connection Established But Internet Not Working

Jul 24, 2010

My wired network dead which i used before 1hr. I seen my firestar firewall application blocked a hit from my internet provider gateway address. I allowed all the connection from my provider gateway after that hit. It did not work. I installed a new OS ubuntu 10.04 tls. and assigned the IP address but still I cant acess the internet. It says connection was established but i cant browse net. Some one pls help me. I tried configuring fire fox. no use.I am using Internet dish. I configure it by browser by entering dish IP.

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Ubuntu Networking :: Unable To Browse On One Connection

Jun 21, 2010

We have two internet connections here, one through Allegro which goes through an ISA 2004 box and an ADSL2+ connection.Everything works fine when connected via the ISA box. Windows machines (and last I checked, a Macbook) work fine on the ADSL2 setup, but nothing Ubuntuesque will work properly through it.DHCP is fine (and the same thing happens with a static IP), it gives a proper address, DNS works fine, it's just whenever a page attempts to load, Firefox will sit at the "Waiting for <site>..." status until it gives up. apt does the same thing.What I've tested it on so far is:

- a homemade 9.10 box
- an IBM xSeries 346 running 10.04
- an Acer Veriton M460 running 10.04
- an Acer Travelmate 6293 running 10.04

None of them will work with it. The Travelmate and the IBM are dual-boot, both will work fine on the connection under Windows. The Veriton is Windows only (tested using a Live CD) and is much the same.The router is a Thompson TG782T (Telsta branded). I'm at a loss with this. Any ideas? I can provide more info if needed.

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Networking :: VPN Connection - Not Able To Browse Other Sites When Connecting To VPN

Apr 30, 2011

The problem that I have been struggling with is while connecting to VPN server, I can't connect to other sites.

I am on 11.04, but this have been happening on 10.10 as well.

On Win7, I was able to browse the VPN and the other sites at the same time without any issue.

I also tried by checking ON the "Use this connection only for resources on its network" option (under IPv4 settings tab) but doing that is allowing me to browse all sites except the VPN site. The method that I am using is "Automatic (VPN)".

Need your help to solve this issue.

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Ubuntu :: Wireless Connection Established But No Internet

Jan 5, 2010

I am new to ubuntu, just installed it a few hours a go. I've managed to get it hooked up to my wireless connection but still the internet doesnt work. What I can do to get it working?

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Ubuntu :: 10.04 Wired Connection Established But No Internet?

Sep 9, 2010

i have just installed ubuntu 10.04 on my laptop hp 550.after i finished installation i connected to internet via eth0 wired connection normally and everything was fine...after about 1 hour i had no internet....i try restart but is the same problem....this is strange because my eth0 says connection established and when i open mozilla i cant open google either..when i ping [URL] it says "cant resolve "

my internet works fine in windows so what should i do to have back my internet on ubuntu...i cant do anything else in ubuntu if i have not internet and i like very much ubuntu so

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General :: PPPoE Connection Not Established Under Debian Testing

Nov 21, 2010

Currently I use openSUSE but the 6 months release cycle is starting to bug me a bit so yesterday I have tried Debian Testing daily snapshot created on 20-11-2010, using KDE desktop (I am a KDE fun). All goes well until I try to make a pppoe using KDE's module network manager.

I created the pppoe connection with user and password but I got 2 problems:
- After I have created the connection it doesn't appear along with "Auto eth0" above the button manage connections.
- The pppoe connection is not established (both password and username are correct).

I know that I could use pppoeconf or ceni for that matter, but I am new to debian as I where new to openSUSE 4 years ago and I am still learning, so please don't tell to use them I just want to know if there's a way to use network manager from kde 4.4.5 to establish a pppoe connection (you could name it the GUI way, no worries I like using the console as well). Under openSUSE I have a program called qinternet that helps me with pppoe connection is there something similar under Debian?

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Ubuntu :: Change Settings On The Notifications That Show On The Screen When A Wireless Connection Is Established?

Sep 3, 2010

I've been wondering about how I can change settings on the notifications that show on the screen when a wireless connection is established, when I get new mail, etc. They look a lot like growl notifications from OSX, but clicking on them doesn't show me anything. If someone could explain a little about what they are/do

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Ubuntu Networking :: Internetconnection Established, Servers Not Found?

Nov 26, 2010

I have received a new modem from my provider and installed it. No problem with that except that there is a problem with my internetconnection. The internetconnection is established.But my computer gives an error every time I want to visit a website:

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Networking :: Established Connections Not Getting Cleared

Apr 13, 2009

We are having an issue with our application where once we start making a few hundred connections to our Linux server, our connections are staying in the established state. When our app is working fine, the client sends a basically a heartbeat every five minutes. It is all nice and clean, receives the FIN and shuts down and that's that. tcpdump as follows:

12:53:10.965206 IP serverA.xxx.xxx.com.40315 > serverB.xxx.xxx.com.1234: . ack 2 win 46 <nop,nop,timestamp 3299017001 2043788445>
12:58:10.892878 IP serverA.xxx.xxx.com.40322 > serverB.xxx.xxx.com.1234: S 494392992:494392992(0) win 5840 <mss 1460,sackOK,timestamp 3299316941 0,nop,wscale 7>
12:58:10.894882 IP serverA.xxx.xxx.com.40322 > serverB.xxx.xxx.com.1234: . ack 3318963465 win 46 <nop,nop,timestamp 3299316941 2044088355>
12:58:10.894886 IP serverA.xxx.xxx.com.40322 > serverB.xxx.xxx.com.1234: P 0:78(78) ack 1 win 46 <nop,nop,timestamp 3299316941 2044088355> .....

Then things start getting busy, and it ends up looking like this:
01:28:10.493760 IP serverA.xxx.xxx.com.41132 > serverB.xxx.xxx.com.1234: S 774853781:774853781(0) win 5840 <mss 1460,sackOK,timestamp 3344315513 0,nop,wscale 7>
01:28:13.491231 IP serverA.xxx.xxx.com.41132 > serverB.xxx.xxx.com.1234: S 774853781:774853781(0) win 5840 <mss 1460,sackOK,timestamp 3344318513 0,nop,wscale 7>
01:28:13.491755 IP serverA.xxx.xxx.com.41132 > serverB.xxx.xxx.com.1234: . ack 3597595480 win 46 <nop,nop,timestamp 3344318513 2089089105> ....

What could be the cause if the fin was received at 01:28:13.492743, but hours later this connection is still established:
gateway 16514 root 111u IPv4 2714750 TCP
serverB.xxx.xxx.com:1234->serverA.xxx.xxx.com:41132 (Established)
There is no corresponding connection in the client's netstat.

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Networking :: Using ESTABLISHED And RELATED Together Seems Dangerous

Apr 16, 2011

I've seen packets coming to my computer through a DD-WRTv24s2 gateway above port 32K several times. I have iptables (using fwbuilder locally) both places. My desktop stops the packets. But I'm guessing the problem is as I described in the title for this post. Yes?If you ESTABLISH a connection to some webpage, and you just accept ESTABLISHED or RELATED datagrams in rule 1 of your iptables, what will keep incoming TCP from that (presumably nefarious) site from going straight to your desktop like the building firewall isn't there?? If the site wants to connect to you above 32k, or portscan you, its RELATED correct? They know your IP. You've ESTABLISHED a connection.If my guess is correct, it would seem wiser to NEVER use these together. Better to ACCEPT all ESTABLISHED. And if something is RELATED, then ACCEPT it only if its the data connection on FTP or individually by service or protocol.

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Ubuntu Installation :: 9.10 With Wired Connection - Browse Internet

Jan 14, 2010

The problem is network manager on top shows connection is established but I cannot browse internet, output for ping www.google.com is unknown host

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Ubuntu :: Browse Internet On Mobile Phone Using PC Connection?

Dec 3, 2010

Here's the situation:
I have a PC/Laptop = connected to the internet.
I have a mobile phone = not connected to the internet.
I connected my mobile phone by a USB cable to my PC/Laptop.

Here is the question:
How do I browse the internet on my mobile phone, using my PC/Laptop's internet connection?

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Networking :: Using Netstat Command - 54406 Established?

Dec 1, 2010

I just found something "strange" by using netstat
tcp 0 0 myhost.deprecated:53719 amaretti.chimfar.:54406 ESTABLISHED
How can I check what is the program that is responsible for this line?

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General :: Internet Connection Active On Laptop But Cannot Browse?

Jul 19, 2011

I cannot Browse Even Internet is Active. Connected using Mobile Broadband using Samsung Mobile USB MODEM. (Modem is recognized Successfully and Connection Shown as active!) I cant browse or even use apt-get update in terminal.. no use. (Even I can see the Gprs icon in the Mobile Phone). WiFi is Perfect in this ubuntu (everything is fine) and Mobile modem working Successfully in Windows too. I have attached the picture.please see it.so you will understand everything

root@saad-laptop:/home/saad# wvdialconf /etc/wvdial.conf
Editing `/etc/wvdial.conf'.
Scanning your serial ports for a modem.
Modem Port Scan<*1>: S0 S1 S2 S3
WvModem<*1>: Cannot get information for serial port.
ttyACM0<*1>: ATQ0 V1 E1 -- OK
ttyACM0<*1>: ATQ0 V1 E1 Z -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyACM0<*1>: Modem Identifier: ATI -- SAMSUNG GT-C6112
ttyACM0<*1>: Speed 4800: AT -- OK
ttyACM0<*1>: Speed 9600: AT -- OK
ttyACM0<*1>: Speed 19200: AT -- OK
ttyACM0<*1>: Speed 38400: AT -- OK
ttyACM0<*1>: Speed 57600: AT -- OK
ttyACM0<*1>: Speed 115200: AT -- OK
ttyACM0<*1>: Speed 230400: AT -- OK
ttyACM0<*1>: Speed 460800: AT -- OK
ttyACM0<*1>: Max speed is 460800; that should be safe.
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK

Found an USB modem on /dev/ttyACM0.
Modem configuration written to /etc/wvdial.conf.
ttyACM0<Info>: Speed 460800; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"

root@saad-laptop:/home/saad# wvdial
--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
--> Sending: AT+CGDCONT=1,"IP","imis"
--> Modem initialized.
--> Sending: ATDT*99#
--> Waiting for carrier.
--> Carrier detected. Starting PPP immediately.
--> Starting pppd at Mon Jul 18 11:26:54 2011
--> Pid of pppd: 3062
--> Using interface ppp0 ....

[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init3 = AT+CGDCONT=1,"IP","imis"
Stupid Mode = 1
Modem Type = USB Modem
ISDN = 0
New PPPD = yes
Phone = *99#
Modem = /dev/ttyACM0
Username = a
Password = b
Baud = 460800

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Ubuntu Networking :: VPN PPTP Connects But Fails If Remote Session Established On Server

May 10, 2010

I am trying to connect to a windows 2000 VPN server at work, with my current settings in DOES connect to the VPN and i can ping the domain server which is but the first issue is i cannot ping the other computers on the network(via hostnames) can't remember the ip address of the other machines . second issue is when the connection is established and i RDP into ok great i am connected to the server but any interaction in the RDP session even moving the mouse on the screen kills the session and the VPN connection fails.

Running Ubuntu 10.04 LTS 64Bit

Image of current settings in network manager:


May 11 12:08:04 oliver-desktop NetworkManager: <info> Starting VPN service 'org.freedesktop.NetworkManager.pptp'...
May 11 12:08:04 oliver-desktop NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.pptp' started


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Ubuntu Networking :: Cannot Able To Browse Any Sites

Mar 15, 2010

Its a single PC, I can ping my connection but I cant able to browse any sites..These are my outputs.

karthick@Learners-desktop:~$ ping -c 3 google.com
PING google.com ( 56(84) bytes of data.
64 bytes from maa03s01-in-f104.1e100.net ( icmp_seq=1 ttl=45 time=355 ms
64 bytes from maa03s01-in-f104.1e100.net ( icmp_seq=2 ttl=45 time=355 ms
--- google.com ping statistics ---
3 packets transmitted, 2 received, 33% packet loss, time 2000ms
rtt min/avg/max/mdev = 355.239/355.534/355.830/0.665 ms

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Ubuntu Networking :: Can Ping And Browse By Ip But Not By Name

Apr 23, 2010

recently I got new wireless card, att usb Quicksilver(based/produce by Option?), for att.Regular gnome network manager freezes the computer when I am plugging it it therefore I installed the one from wicd.net.Also, I am using HSOConnect (to connect by to G3 network), and sometimes I connect to regular wireless g connection through router.

Under both cases I can ping the website by IP and can access the website by ip (ex. google) but can not ping or browse by name.As a side note... I can use and access Skype fine under g3 network and normal wireless.I tried browsing and finding other solutions in past few days but ended up breaking everything and reinstalling to get back to the point I am at now.I am working on the road, so not being to broswse is rather crippling to me.... also I can access internet normally only from home from different computer now.

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Ubuntu Networking :: Can Only Browse IP But Not With Domain Name

Jun 9, 2010

I haven't been playing with linux for some years.

My setup:
Private router which connects to the internet.
Host: win7 with VMWare workstation
Ubuntu 10.04 runs in a virtual machine on VMWare workstation.

Win7 works fine. Ubuntu can ping with valid ip address and firefox can load a webpage if provided with valid ip address. Ubuntu cannot ping with domain name and firefox cannot browse with domain name. Examples:
Ping google.dk results in

ping: unknown host google.dk
Writing google.dk in the address bar of firefox results in

Firefox can't find the server at www.google.dk.

peterbf@ubuntu:~$ ping
PING ( 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=237 time=40.3 ms
64 bytes from icmp_seq=2 ttl=237 time=38.8 ms
--- ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 38.892/39.645/40.398/0.753 ms
Writing in the address bar of firefox results in a correctly loaded google page.

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Ubuntu Networking :: Cannot Browse By FQDN

Sep 5, 2010

brand new install of 10.4 server and I'm having a strange issue. I cannot browse to any website by it's domain name, but I can connect via IP address.

I've been googling around and did the following:

added nameservers to /etc/resolv.conf based on an nslookup from my windows box:

I commented out the hosts line in /etc/nsswitch.conf per another site and changed it to: hosts: files dns

I can see other computers on my local network via IP and I can browse to the server's default apache page by it's hostname, so I'm assuming it's something about the server's dns resolution, but I'm not sure of my next step.

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Ubuntu Networking :: Browse The Domain Via VPN?

Nov 3, 2010

I have Ubuntu 10.10 at work and I've installed a Windows XP virtual box machine under it, that is joind to our Active Directory domain(but Ubuntu is/will not joined). I've set up VPN on XP box and I can connect to it from Ubuntu. I want to browse network shares(that use AD for permissions) and domain sites(like sharepoint) from Ubuntu. But even after connecting to VPN when I can't browse network shares, and nautilus asks for domain user/pass and tries to open share with no success. What extra steps is needed to browse my corporate network from Ubuntu via VPN?

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Ubuntu Networking :: Cannot Browse Window 7 Share?

Feb 18, 2010

I could not get XP & latest Karmic Xubuntu to network. But now I can browse Xubuntu share/s from Win 7 but not vice versa (I cannot browse Windows 7 shares from Xubuntu laptop.) How would I accomplish this?

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