Managing and using network connectivity on a Ubuntu system

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16
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1answer
26k views

Where to set proxy ignore list?

I upgraded to ubuntu 11.10 from 11.04, shocked to see few things... My system is behind a proxy, so I did set a proxy setting. Being a web developer, I want to remove a lot of addresses that I type ...
2
votes
1answer
252 views

Network Storage Device No Longer Accessible After 11.10 Upgrade

After upgrading to 11.10, I lost access to my Network Storage Device (NSD). I had access earlier in the day before upgrading. It sees the NSD but bombs out trying to access it. I get Unable to ...
1
vote
1answer
2k views

Can get IP after upgrading to 11.10

Had upgraded my laptop from 11.04 to 11.10, desktop ubuntu. And made fresh install of ubuntu server 11.10 on another comp. And now a have exactly same problem on both computers: It doesn't have ...
2
votes
2answers
946 views

Wireless slow on an Intel AGN5100 on an hp Presario C45

I have installed ubuntu 11.10 on my laptop yesterday, everything worked fine except for the wireless, which is very very slow compared to xp on the same machine. I didnt have this problem when using ...
0
votes
3answers
2k views

Network Connections - able to connect to wireless but network connections does not display my connection

Im using Ubuntu Oneiric and AR9285 Wireless Network Adapter. I can connect to my wireless network without problem. However when I click the "Network Connection" icon on system tray, it is disabled ...
1
vote
1answer
3k views

Why does dhclient <interface> return a services related message?

I'm trying to use dhclient to set up a tether with dhclient, which worked in 11.04. However, upon upgrading to 11.10, I get the following message when trying to use it. Rather than invoking init ...
1
vote
5answers
7k views

Ubuntu 11.10 network speed [closed]

Just upgraded to 11.10 from 11.04 . My internet speed is VERY slow now. I did a speed test with two similar laptops. The one running windows has a download speed of 14Mb/s while the one running Ubuntu ...
10
votes
2answers
1k views

How to stop Network Manager from continually prompting for wireless password

How do you prevent Network Manager from continually prompting for wireless password when it tries to reconnect after the connection temporarily drops? Unlike this post, this happens for me without ...
1
vote
1answer
4k views

Lenovo b570 Broadcom Corporation BCM4313 wireless doesn't work

prumar@bluelaptop:~$ rfkill list 0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: ideapad_wlan: Wireless LAN Soft blocked: yes Hard blocked: no 2: ideapad_bluetooth: Bluetooth ...
0
votes
1answer
1k views

mediatomb autostart doesn't work

mediatomb works fine when starting manually but the autostart doesn't work. In the wiki it says it should start automatically at system start, but it doesn't. tryed many things but still doesn't work ...
0
votes
0answers
3k views

Wired Network “device not managed” [duplicate]

Possible Duplicate: network manager says “wired device not managed” I have been having serious problems connecting Ubuntu 11.04 to the internet. I have three computer in my ...
1
vote
2answers
2k views

How to share internet from one network card to another ethernet port

I basically seek a way to "bridge" the internet connection coming into my linux machine through one ethernet port (on the mother board's NIC) and share it with another computer connected to a separate ...
4
votes
3answers
2k views

Persistent 3G connection with network manager fails [closed]

I maintain a persistent 3G connection on a remote device using network manager. However, every so often, the link fails and then does not restart itself. I managed to identify an occurrence of this in ...
0
votes
2answers
2k views

How to disable a laptop's built-in WiFi NIC when using a PCMCIA one?

I have a weak (having to reconnect frequently) "Intel Ultimate N WiFi Link 5300" built-in WiFi module in my Dell E5500 laptop and prefer to use a PCMCIA "Atheros AR5008" instead. On Windows I just ...
0
votes
1answer
544 views

Why does my wifi not work?

Yesterday evening, my connection was working perfectly well. Then I connected to my school's wifi this morning, fine. As I was switching it on, my friend pressed my wifi button. I shut down my ...
1
vote
3answers
1k views

NAS device for Ubuntu

Fellows, I would like to know if you use, how you use and which device as Network Attached Storage. I've being reading some reviews online, and there is a lot off downsides in many models - more ...
7
votes
2answers
11k views

Waiting for network configuration message at boot, then blank screen

When I boot (11.10), I get the message that it's "waiting for network configuration" and then the same, but "60 seconds longer" and then finially it "boots" but to a black screen. No cursor, just ...
1
vote
1answer
2k views

PXE server to boot ISO or other linux distro over network

How do i setup my ubuntu desktop to act as a pxe server to boot ISO's across the LAN. And is it possible to run linux distros like linux mint, moblin etc so that boot at client would be faster. I ...
2
votes
2answers
767 views

Access to network files under \\directory

I was doing Start - Run - '\\myfiles' under Windows XP and had access to some file directories over my network. I dont know how to do the same thing under Ubuntu.
1
vote
1answer
616 views

Unable to connect my computer from LAN (http, smb)

I installed ubuntu 10.04, Apache, PHP, mysql, smb. Everything work fine in locally in my IP. When i trying to access my computer from LAN (other computer), it shows unable to connect. when i ping my ...
1
vote
3answers
290 views

Why does Ubuntu go on disconnection fits?

Got a new router (Netgear DGN2200) and wireless performance has been woeful, with disconnection fits happening several times a day - it disconnects out of the blue, and then fails to connect ...
1
vote
0answers
415 views

Wireless connection not recognized after trying to set up xl2tpd or pppoeconf [closed]

To be able to use some vpn, i installed the xl2tpd on Ubuntu, but it did not work and i removed it. I changed a bunch of configuration files during the process. I used this tutorial: ...
3
votes
2answers
292 views

Aptget without networking

i had a accident and i removed network-manager package, now i cannot get network access or internet access to apt-get install it back and reconfig the internet what should i do? download the DVD and ...
0
votes
1answer
439 views

how to access and change tcp configuration

I wanna play the buffer size and other settings in the tcp configuration in order to finish the project that am working on and analyzed the results ?? I want to know if there is a file or something ...
16
votes
4answers
14k views

How to find unused IP Address on a network?

I just want to find out unused IP Address on a network. I think it is possible with nmap. Can any one say me the way pls? Note: I just need the free IP list alone.
4
votes
1answer
10k views

Understanding my route table

this isn't programming at all, but I've seen related topics so I thought why not. I am using ubuntu and currently trying to learn basic networking. I read a lot of theory, so I understand the terms ...
1
vote
2answers
3k views

How to setup one ethernet interface as dhcp server and another interface as static ip?

I am getting a static ip from provider. But in my Ubuntu 11.04 pc i have two reserved ethernet interface mostly both are like getting automatic dhcp IP as of now. But i want my Ethernet interface 0 ...
5
votes
2answers
5k views

Why is ddclient giving me an “Invalid IP” error when trying to update dynamic DNS?

I am having a really hard time getting ddclient (which updates OpenDNS with my current IP address) to work. I have it running as a daemon, but it never succeeds in updating my IP address at openDNS. ...
2
votes
1answer
277 views

Enforce outgoing port for a machine inside LAN

I'm running Ubuntu Server (natty) in as a gateway/firewall in front of a private network. I have successfully enabled IP forwarding and NAT so the machines behind the firewall can connect to Internet ...
5
votes
1answer
1k views

Crashed my server, how do I find out what happened?

From a remote machine, I ran 100 concurrent requests against my Ubuntu VPS ab -n 100 -c 100 http://... And, as I suspected, the server "crashed". I can still ping it, and it responds very quickly ...
1
vote
2answers
3k views

How do I fix UPnP Port Forwarding on Ubuntu using miniupnp?

From what I understand, Transmission bittorrent client uses the miniupnp library to do it's UPnP port forwarding of routers, however on Ubuntu upnpc (a test client of the miniupnp library) doesn't ...
1
vote
3answers
1k views

How do I diagnose an onboard wired network interface that quit working?

I have an installation of 10.10 that has been working fine since I upgraded. One day I booted it and there was no network connectivity. The network indicator now says "Networking disabled". If I go ...
1
vote
1answer
527 views

Connect remote via putty

How to connect with putty to a ubuntu 11.04 server which is connected to the internet through a router configured with static specifications? I have ssh server installed, and when i try to connect ...
1
vote
1answer
1k views

Internet connection with static IP

I have installed ubuntu server 11.04 edition (with LAMP, mail server, and SSH server) and I try to connect to the internet. When I plug the cable from my ISP with the configuration provided below to a ...
0
votes
2answers
3k views

Access workstations without public IP - maybe with VPN

My friend told me, that without public IP of the workstations, I can access machines remotely. But I'm a rather confused in using VPN, I don't understand how can it manage to connect. I saw this video ...
2
votes
1answer
213 views

net not working in 11.04

i have the following system: amd athlon II x4 635 kingston 4gb ddr3 1333 500gb seagate sata cm gx 450w 85+ bronze i have win7 along with ubuntu 11.04 now the thing is when I installed 11.04 inside ...
2
votes
2answers
5k views

How to access shared files on Ubuntu from a windows machine?

I have shared a folder on my ext4 drive mounted at /media/data using the GUI. Now it appears in my Places -> Network and I'm able to access it, after giving password, at smb://wim-ubuntu/ab/ ...
2
votes
1answer
489 views

How to make some Virtual IP Address?

I want to make some Virtual IP Addresses for my network adapter or wireless adapter, so that I can connect to network with more than one IP address from one computer or laptop. How can I do it? (I ...
3
votes
2answers
602 views

What is easiest solution for twisted cable connection between two PCs running Ubuntu

I plan to change OS on my other PC from Windows XP to Ubuntu and want to have access to it. Basically please imagine two PCs, each running Ubuntu 11.04 and connected together with twisted cable ...
28
votes
6answers
46k views

“Waiting for network configuration” adding 3 to 5 minutes to boot time

I get the following pieces of information at the startup, takes about 3 to 5 minutes, while normally about 1 minute: Waiting network configuration Booting system without full network configuration ...
0
votes
1answer
454 views

How to connect to internet via mobile broadband?

I am trying to connect to internet in ubuntu-11.04 with Nokia-x2.01 and BSNL(name of the operator) SIM card in India. Can someone help me on how to connect to mobile broadband? I did connect to the ...
1
vote
1answer
402 views

Uninstalling knetworkmanager removes icon from system tray

I happened to install KNetworkManager over my default installation of KUBUNTU 11.04. Then I tried to open if from the K_Menu-System-. I got a message asking me if want to use it always. I replied yes. ...
4
votes
3answers
9k views

How to override the DHCP-provided nameserver?

I (think) that I've configured a static IP address in /etc/network/interfaces: # The primary network interface auto eth0 iface eth0 inet static address 10.1.1.2 netmask 255.255.255.0 ...
4
votes
2answers
7k views

Where is dnsmasq started and configured?

Where is dnsmasq started and configured during the system startup under Ubuntu Lucid server? I have not been able to find any startup script or service that actually starts and sets up dnsmasq. I ...
1
vote
1answer
169 views

Internet speed problem [closed]

I'm using Ubuntu 11.04 and I'm having a hard time while browsing the web. When for an example I'm trying to watch a movie on youtube, at the same time I can't access any other webpage - it's simply ...
3
votes
3answers
6k views

Why is my ethernet connection connecting and disconnecting repeatedly?

Just trying to get my ethernet connection to work in Oneiric, and when I plug the cable in it connects and disconnects forever. /var/syslog says this (repeats it over and over again): Sep 26 ...
2
votes
2answers
4k views

No internet connection, ifconfig shows errors

I'veen using ubuntu for long time now but lately facing a new problem with the network adapter. I am not able to connect to the internet. After searching the Internet for a while, I found out that my ...
1
vote
2answers
3k views

How do I connect a wired desktop to internet via a wireless laptop?

I have a desktop system running Ubuntu 10.10. It has no wireless card just a wired Ethernet card. I have a Thinkpad T42 laptop running Ubuntu 10.10 in the same room as the desktop. It uses its ...
4
votes
1answer
639 views

Has “Auto eth0” been renamed to “Automatic ethernet”?

Today when I checked my network settings I saw that there in addition to the connection "Auto eth0" was the connection "Automatic Ethernet" (and I haven't added it myself nor done any changes to the ...
5
votes
2answers
3k views

timeout errors in apt-get update/install

I'm trying to do an apt-get update or apt-get install xyz and I'm seeing timeouts like this: W: Failed to fetch http://eu-west-1.ec2.archive.ubuntu.com/ubuntu/dists/oneiric-updates/Release.gpg ...