Managing and using network connectivity on a Ubuntu system

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How to search for wireless networks?

I'm using Ubuntu 12.04. I tried with this sudo iwlist eth0 scan but this doesn't seem to work :(..It says "interface dosn't support scanning" What to do? Please help.. I can't access Internet on ...
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1answer
157 views

How to use wired and wireless interfaces simultaneously?

When creating any socket, we don't provide a device name (like eth0, or wlan0). On my laptop, I have a wired interface (eth) and a wireless interface (wlan). I want to run one process on each ...
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1answer
736 views

Configure a network card on public IP and Wifi usb dongle on LAN

I have an Ubuntu Server running on 12.04.1 LTS with the GUI installed too. My server has an internal gigabit ethernet card which is configured to serve a web app on a Public IP. At this point I did ...
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467 views

Incomplete system-wide proxy settings on Ubuntu 12.10 [duplicate]

Possible Duplicate: Where are the system-wide proxy server settings? The new: System Settings>Network>Network proxy does not allow me to configure the user and password for my proxy, and ...
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2answers
3k views

Internet Timeouts with TP-Link TL-WN821N v2 wireless usb stick

A short time after accessing the internet, the browser/download times out. Before the timeout, the internet works OK briefly; afterwards, the wireless is still connected with a strong signal, but ...
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2answers
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How do I enable Compound TCP (CTCP)?

I would like to use Compound TCP in Ubuntu. The Wikipedia page says: In addition to Windows, CTCP was also ported to Linux [...] Since kernel version 2.6.17 the module has been incompatible and ...
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How to setup VLAN on same subnet as Ethernet [closed]

So this is what i'm trying to do: I have a physical NIC with dev name eth0 with ip 192.168.1.2 and gateway 192.168.1.1 and I want to setup a VLAN with ip 192.168.1.x and same gateway as eth0. ...
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2answers
522 views

Why is '127.0.0.1' trying to connect to '10.0.0.2'?

On a LAN each computer is assigned a different IP address each morning. When I installed Kubuntu 12.10 the IP address assigned to the machine was 10.0.0.2, but today it is 10.0.0.1. When I try to ...
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243 views

D-Link DGE-530T not connecting

My onboard LAN died the other day so I installed a new D-Link DGE-530T rev. C1 PCI card and disabled the onboard LAN in the bios. My computer detects the D-Link card (ethO) but will not connect to the ...
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1answer
1k views

sharing canon all in one over network

I have Ubuntu 12.04 installed on an old computer I want to use as a file and printer server in a small office. I have samba sharing set up for file sharing and I've been able to get all the computers ...
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1answer
87 views

Per network settings for a laptop

I often roam in different networks. Some of those need special settings for DNS or block mails to external mailservers and only accept internal smarthosts. I'm looking for some kind of program where I ...
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333 views

Can only connect to Google sites via mobile broadband

I'm on Ubuntu 12.10 (using xubuntu) and I'm trying to surf the web using my mobile phone (plugged to my laptop using a USB cable). For some reason I can only connect to google.com and other google ...
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1answer
378 views

Unable to connect or manage networks in Lubuntu 12.04 [VMWarePlayer]

I'm trying to connect to a VPN inside VMWarePlayer running Lubuntu 12.04 but I'm not able to do it. This is my NM's screen Edit: Can't post screenshot I can't change anything or connect to any ...
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2answers
249 views

Hourly events in the firewall-log, originating from Ubuntu12.04-box. How to find the reason? [duplicate]

Possible Duplicate: How do I disable Online Videos in the Unity Dash? every hour, the logfile on our firewall (IPCop 1.4.20, 192.168.1.8) lists nine lines, apparently caused by my Computer ...
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1answer
211 views

problem with dns

I'm currently experiencing a issue with my dns, affecting 'host' and 'apt-get'. The contents of my /etc/network/interfaces; auto lo iface lo inet loopback auto eth0 iface eth0 inet static address ...
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255 views

How do I output my USB audio input?

I have a record turntable which has an audio output cable so I've connected it to my 12.10 box. Says there's no drivers required and checking pulse audio I can see that there is sound coming in ...
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2answers
29k views

How do I access Ubuntu server running in VirtualBox from outside

I have installed Ubuntu Server 12.04 LTS on my laptop via VirtualBox. I have installed LAMP, OpenSSH, Mail server. As I logged in, I ran ifconfig. It gave me the inet address as 192.168.0.3. So, ...
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1answer
1k views

Wireless networking features not working on 12.10 dual booting with Windows 8

Before I begin, I should probably say that I'm fairly new to Ubuntu, so please forgive me if I miss something obvious. I recently figured out how to dual boot Ubuntu 12.10 with Windows 8 on a Lenovo ...
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1answer
1k views

Wireless internet not working: unclaimed [duplicate]

Possible Duplicate: How can I get Broadcom BCM4311 Wireless working? wireless internet on my Acer Travelmate 5310 with Broadcom BCM5787M Gigabit Ethernet doesn't seem to be working. I am a ...
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1answer
11k views

VLC is lagging when playing HD videos over my home network

I am well aware that this question has been asked about a billion times all over the Internet but so far nothing has worked for me... I have a home server (Ubuntu Server 12.04) and a laptop (Ubuntu ...
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3answers
64k views

How to turn on Network Discovery and Share between computers with Samba

I have an Ubuntu server. Accessing the server from Windows clients works fine. But the server is not listed among the available PCs on Windows client's Network overview. For windows machines it ...
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2answers
849 views

Unable to see 12.10 on network or connect via ssh [closed]

I am sure I am missing something very obvious but cannot figure it out. I am trying to connect to my Ubuntu 12.10 machine via connectbot on my phone. In 12.04 this worked no problem, since I ...
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0answers
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How to Connect internet using Huawei EC1261 (TATA photon+) on Ubuntu 12.10 [duplicate]

Possible Duplicate: How to configure TATA Photon+ EC1261 HUAWEI I have installed Ubuntu 12.10 (64 bit) on Dell inspiron 7520 laptop having Intel i7 3rd generation processor. I am trying to ...
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1answer
1k views

How can I bypass a wireless switch which is broken on a Sony Vaio VGN-FW31E?

I am running dual boot Ubuntu 12.10 and Window 7 on a Sony Vaio VGN-FW31E. The wireless switch has broken and come away from the motherboard, which switches it to the permanently off state. I have ...
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1answer
2k views

How to make nautilus forget saved password? [duplicate]

I am browsing Shared folders on a Windows network through Samba. When I first opened a system on the network I was asked for a login username, password and I checked the save-password setting. Now ...
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3answers
7k views

How to remove the sit0 network interface?

when I type ifconfig -a, there is a sit0, why it is here, and how to delete it? sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 Metric:1 RX packets:0 errors:0 dropped:0 ...
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2answers
656 views

KVM - Guest does not recognize second NIC

I have a server running Proxmox (a virtualization platform), and created a KVM virtual machine with Ubuntu Server 12.10. After configuring the network, everything works fine, but if I add a second ...
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1answer
2k views

Why does IPv6 kill my network in Ubuntu 12.04?

Ok, so I have nice Ubuntu 12.04 headless server running. It's very happy. It's my router/firewall/DNS/etc. eth0 is WAN, eth1 is LAN. I can easily get my IPv6 Hurricane Electric tunnel connected, ...
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3answers
751 views

How do I run a simple Zenity script after disconnecting from WiFi?

I am running Kubuntu 12.10 64bit. I am trying to get a bash script to execute when I am disconnected from the network. I created a file in the folder /etc/network/if-down.d/ called test which has a ...
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2answers
660 views

FTP access to a windows machine on LAN?

I am on a LAN network on which most of the systems are Windows based and only I am using Ubuntu 12.10. I want to access the Shared folders on these systems using my ubuntu. I have installed samba ...
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1answer
2k views

I am unable to enable wireless networks. How can I enable it?

I have Ubuntu 12.10 installed on an hp pavillion dv5 laptop I can't enable wireless networks. I am able to connect to wired networks though. I have a wireless button that's currently set on disabled, ...
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1answer
251 views

How to Backup over LAN

In 12.04 LTS I would like to get grsync to back up to another Ubuntu PC's hard drive. In Nautilus file manager I can connect to the other PCs OK. How do I address another PC's hard drive in Grsync or ...
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1answer
59 views

How to change network configurations, in my case, i want to change Gateway IP Address

my Name is Kamunge, i am trying to make changes for the gateway and have tried all the ways including deleting all the wired connections since its static and restarting the computer having the ...
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1answer
697 views

Connecting and refreshing a wireless network without restart

After I set up my wireless network, I had to restart my computer before it would connect. I have talked to/read comments by, several other Ubuntu users who had to do the same thing. Why does this ...
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1answer
70 views

Huwai E303C is not working

Device - Huwai E303C Network - AIRTEL Location - Bangalore India OS - Ubuntu 12.04 LTS Have tried following but didn't work : Installing Linux driver which comes along with Device Tried with ...
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75 views

make both Atheros ethernet controller and Broadcom wireless contrller of dell vostro 3460 work [duplicate]

Possible Duplicate: Broadcom wireless 43142 conflict Atheros 8161 in kernel 3.5 (unbuntu 12.10) I have bought a new Dell 3460 laptop pre-installed with Ubuntu 11.10. All networking worked ...
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2answers
401 views

Bash script not working properly when run automatically

I have a script that sets my proxy automatically depending upon the connection and so its placed in /etc/network/if-up.d/ folder. I set the proxy using gsettings tool and then I want to show a ...
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75 views

Setting proxy variables automatically for different Network Profiles [duplicate]

I have two network profiles for wired connections in the network manager: 1. Home_Lan--> automatic dhcp requires No Proxy 2. Hostel_Lan--> manual ip settings requires an automatic proxy url ...
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2answers
505 views

Networking security issue with suspicious traffic. How to track it down?

I have specific problem a bit advanced for me. On my router log I have seen following lines: Internal Prot. External NAT Time-out 192.168.0.167:56396 TCP ...
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1answer
8k views

Can't get wireless working on 12.10 and Dell latitude d630

Yes, I've looked at several other posts, and other sites trying to figure out what's up, but I've followed the steps, and had no success. Note that I'm a relative newbie to setting up wireless on ...
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0answers
2k views

Slow Internet on Ubuntu 12.10

I've recently migrated from a windows 7 PC to Ubuntu 12.10 64Bit. Ubuntu Experience Level: NewBee. Recommended/Restricted updates installed. I've added an NVIDIA Binary Driver for my Display. The ...
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2answers
599 views

Unable to access my domain (BIND9 issue)

I successfully run BIND9 for using domain name over the local network (BIND9 installed in 192.168.0.74) but when I added WAN for adding the Internet to all the network, all the PCs became unable to ...
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1answer
231 views

How do I find the chokepoint in my private ethernet network?

I'm currently living in a rather austere part of the world where I have limited access to good computer hardware. I have a private network set up where an old IBM thinkpad laptop (Lubuntu 12.10) sits ...
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3answers
6k views

Web server on local network

I have problem accessing (one of my) web server from my local network. I have a (Ubuntu) computer that that acts as router, web server etc. That works well, I can access the web server both ...
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1answer
2k views

Dell Inspiron 1120 Wifi, Bluetooth problems [duplicate]

(A related question found here.) I've been used 11.04, now 12.04 LTS, and if there is solution, I don't want to upgrade from that LTS. The first problem is, that the network-manager/networking ...
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1answer
797 views

Web address fails to resolve with static IP on Ubuntu Server 12.04

Running Ubuntu Server 12.04.1 LTS in VirtualBox on a mid-2009 MacBook Pro. I've been using no-ip.com to keep my router's dynamic address up to date and just set up a free host name with them, hoping ...
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2answers
733 views

After updates my scanner stopped working over WiFi. How to diagnose?

I've been using an HP Officejet 6500 All-in-One for a few years now without any trouble. It is connected wirelessly to my network, for both printing & scanning. However, this week, scanning quit ...
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2answers
14k views

How do I setup an LXC guest so that it gets a dhcp address so I can access it on my network?

I setup LXC using: lxc-create -t ubuntu -n lxcguest1 But I can't access any services running on it from my LAN, it appears to be NATed. How do I set it up so that I can access it (it probably ...
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1answer
555 views

x230 tablet , realtek 8192ce connects to router but no internet

The issue: I can ping all devices on the network except the gateway (192.168.0.1) and in turn can not access outside of the network without proxying through another device. The system: Lenovo x230 ...
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1answer
2k views

Not able to connect to mobile broadband [closed]

I can connect to internet by modem, when i plug the device before booting.After unplugging and when try to re plug the modem after log in,there is no enable mobile network option and i cannot connect ...