Managing and using network connectivity on a Ubuntu system

learn more… | top users | synonyms (1)

3
votes
1answer
2k views

Unable to connect to Mobile Broadband: Huawei EC1260 - TATA Photon+

I have a TATA Photon+ (Huawei EC1260) mobile broadband device and am unable to establish a connection either using wvdial or the network manager. Here is my wvdial.conf [Dialer Defaults] Init1 = ATZ ...
10
votes
4answers
19k views

Network not starting up on boot

Basically my network won't start. Can't use wired connections. To make it a further brain-scratcher, when booting into recovery, and using the network console, the network comes up and works. Outside ...
22
votes
3answers
8k views

bind software to different network interfaces

I have two different network interfaces, connected to 2 networks. One is an eth0 and the other one a wlan0. How can I tell a software to use only a specific interface? Basically I want Firefox to ...
4
votes
1answer
271 views

High Pings On New Internet Provider

I am new to setting up routers and networks, so I am unsure. I still have everything to the factory settings. My net connection is quite slow, and seems unreasonably so even when connected with wired. ...
15
votes
2answers
6k views

Switching a server to static IP from DHCP

I am running an Ubuntu 10.04 server installation and I recently had to switch it from DHCP to static ip. I edited /etc/network/interfaces file and switched iface eth0 inet dhcp to iface eth0 inet ...
5
votes
1answer
104 views

What is the best way to launch a process when the Internet connection goes up/down?

What is the best way to automatically launch a process when the Internet connection goes up/down?
2
votes
1answer
513 views

Restoring samba mappings after reboot? [closed]

I've setup a simple Ubuntu 10.04 file server and want to have a handful of users attach from windows machine to a Shared drive and to private Home directories on a per machine basis. I've got this ...
1
vote
1answer
1k views

How to configure a second IP address and bind it to a VBoxHeadless virtual machine?

I've requested my ISP to dedicate me a second Internet IP address and have got it. Now I need to configure it (I've never had any experience with using multiple IP addresses on one network interface) ...
12
votes
2answers
7k views

What does “.local” do?

I've got several Ubuntu machines on my network at home, but the DNS is provided by a windows server (2K). When I ssh to them from another , if I ssh to them as "machine" I can't connect, but if I ...
3
votes
2answers
767 views

How to configure domain name on school network [closed]

I'm trying to set up my server (running Ubuntu server 8.04) on my university network so that I can access it from anywhere on campus. Last year I had it plugged into my router and set my router's ...
2
votes
2answers
4k views

Why does applying system-wide network proxy settings affect only the superuser (root)? [closed]

I recently solved my problem How to check if Network Proxy is really applied? Now I can use sudo apt-get install application-name easily - but the problem is that the normal user (not the superuser) ...
4
votes
1answer
7k views

How do I set ufw to allow internal network connections?

I'm configuring an Ubuntu Server for my home network to handle NAT and firewall. I've configured dnsmasq and verified that it's working correctly. I want all connections from my internal network to be ...
21
votes
6answers
19k views

How do I renew my DHCP lease?

Short of rebooting, how can I release and renew my DHCP lease? It would be useful to know a GUI and terminal method. I'd especially like to know if there is a means to do this without requiring admin ...
6
votes
6answers
2k views

How can I tell if I have a broadcom wireless card?

I just read that Broadcom has open-sourced their wireless adapter drivers and was curious if this would have any affect on my Dell XPS M1330 which sometimes has flaky wifi.
3
votes
5answers
2k views

Cannot ssh/ping an Ubuntu machine over WiFi

I have an Ubuntu 10.04 running on a laptop, connected to a local network via WiFi. This machine does not respond to pings/ssh connect requests, as if it was firewalled. However, if I ssh from this ...
4
votes
2answers
3k views

Slow wifi with D-link DWA-160 A2

I recently bought a USB wifi adapter for my new desktop computer. It's a D-link DWA-160 A2. From the start it didn't want to work at all, but after unplugging and then plugging it back in, it seems to ...
1
vote
3answers
3k views

Laptop's Internal bluetooth not being recognised by ubuntu: how to diagnose the problem?

I have an Acer Aspire 4810T with ubuntu 10.04 installed on it. Fn+F3 should turn on/off the internal bluetooth receiver. But it does nothing. The "bluetooth" menu in System > Preferences says "your ...
4
votes
1answer
821 views

Script to dial 3g link in case network is down?

I want to set up an Ubuntu router with automatic fail-over to a 3G link. I can probably set up routing and link aggregation, but I don't know how to monitor link status and dial the 3G link in case it ...
4
votes
0answers
4k views

How can I configure Ubuntu to report its hostname to windows? [duplicate]

Possible Duplicate: Access Ubuntu Server by host name How can I configure Ubuntu server to report its hostname in such a way that typing http://thehostname/ in a web browser will connect to ...
9
votes
8answers
33k views

How to check if Network Proxy is really applied?

I'm trying to set Network Proxy to use my LAN's internet connection to update packages. while the proxy settings works on my firefox, but the package manager still cannot connect to Internet. I have ...
28
votes
7answers
1k views

What precautions should I take when exposing my desktop directly to the internet?

I've always used my Ubuntu desktop behind the security of a router with NAT, but there have been a few times when I've had to plug it directly into an active cable modem. In general, what precautions ...
3
votes
2answers
2k views

Can't join wifi ad hoc network created by MyWi [duplicate]

I want to do iPhone tethering using MyWi, I can see the network it creates but I just can't join. Having WEP security on would throw me into the passphrase input again and leaving it unprotected ...
5
votes
2answers
4k views

How can I start DHCP3-server later, so that it waits for a bridge interface to initialise before loading?

I have Ubuntu 10.04 server currently setup with dhcp3-server as well as a bridged interface (br0) for use with virtual machines. The problem I have is that when the server reboots, dhcp3-server fails ...
9
votes
8answers
15k views

How to make my proxy settings change depending on the network I connect to?

My company's corporate network requires me to set a network proxy to access the net, but when I am anywhere else, I don't need it. The proxy settings in Ubuntu (System -> Preferences -> Proxy server) ...
2
votes
1answer
4k views

After startup, why do I have to run /etc/init.d/networking restart for networking to work? [closed]

I just fixed the grub install, and found that my wired network connection did not work. I eventually got it working, but each time I restart, I have to manually restart the networking service to bring ...
8
votes
2answers
2k views

Multiple network connections, where does traffic get routed through?

My thinkpad has two network interfaces, one wired and one wireless. Both interfaces can be connected to a router which in turn is connected to the Internet. If both interfaces are connected, are both ...
9
votes
2answers
4k views

Connecting to VPN prevents access to normal web sites

I have Ubuntu 10.04 installed with OpenVPN, and when I connect to a VPN, http access to non VPN sites stops working, until I close the VPN connection. To be more specific, both Chrome and Firefox stop ...
88
votes
6answers
15k views

Best way to cache apt downloads on a LAN?

I have multiple Ubuntu machines at home and a pretty slow internet connection, and sometimes multiple machines need to be updated at once (especially during new Ubuntu releases.) Is there a way where ...
2
votes
1answer
3k views

How can I completely remove wireless drivers? [closed]

On my laptop the wireless seems to be detected but it fails to connect. Even turning the switch on and off seems to have no effect. This is the output of lspci command: 06:02.0 Network controller: ...
3
votes
2answers
1k views

Wi-Fi only connects when router set to TKIP, but won't use AES [closed]

For some reason, my computer (running Kubuntu netbook edition now, previously UNR) won't connect to my router when it's set to AES+TKIP. As soon as I switch the router to TKIP only, the computer ...
6
votes
5answers
9k views

Modifying /etc/hosts does not have an effect

I'm attempting to block myself from time-wasting websites but changes I make to /etc/hosts. For example: 127.0.0.1 localhost 127.0.1.1 ross-laptop 127.0.0.1 bing.com # The following lines are ...
2
votes
4answers
204 views

Copying data from server to PC on the same network

I am recently setup a server to host my "data" movies and music and such. I was trying to copy the data back to my home computer using this command scp files/on/server user@homecomputer:/home the ...
3
votes
3answers
1k views

Setting http proxy in Awesome WM

I have installed awesome on top of Ubuntu 10.04 and switch between Gnome and Awesome sessions (partly because I am still learning awesome and partly because I use a few apps that require Gnome ...
5
votes
2answers
2k views

Is there any way to turn my laptop into a wireless access point for other devices? [duplicate]

Possible Duplicate: How to set up ubuntu as wireless accesspoint? Is there an easy, simple way to setup a wireless network so my laptop (which is connected by a wired connection) can share ...
0
votes
1answer
232 views

How do I make Gnome (and Gnome applications) automatically detect a wvdial connection?

I use wvdial in order to connect to the internet using a cdma usb modem that isn't detected by the nm-applet. However, once I've connected, gnome and other gnome applications don't seem able to ...
6
votes
4answers
16k views

Delete eth0 avahi from the ifconfig list

Hello this is the response I get from ifconfig. Now I have two eth0 things being showed up. I need to delete the second one which says eth0:avahi. I posted my ifconfig's response on a site as I has ...
1
vote
3answers
2k views

How to Write a Shell Script to Move Files from FTP Server to Network Share Drive

I have customers who upload large amounts of data to my FTP server (an Ubuntu 9.10 machine). Once the files are uploaded, I am faced with transferring them to a local Droboshare network drive so our ...
1
vote
1answer
797 views

Ubuntu Linux UFW Firewall, Local Intranet Access

At home, I have Ubuntu server with the UFW firewall. What command do I type to turn on local intranet access to my web server, but keep the outside world out from my DSL modem?
3
votes
3answers
2k views

How should I set up a Linux file server for data sharing with Windows PCs and a PS3?

I have the following pieces of hardware I would like to network mostly for file sharing (media primarily): 1 gaming laptop, 1 i7 (2.3Tb storage) desktop, 1 P4 desktop (500g storage), and 1 250gig PS3. ...
4
votes
4answers
7k views

http://localhost/ not working

I've just done a fresh install of Ubuntu (10.04.1) plus LAMP (via sudo tasksel install lamp-server) and everything is working fine. However, it does so until I need to work on localhost when I do not ...
4
votes
4answers
4k views

How to display UMTS signal strength?

Using a random UMTS USB stick (Huwei 160 or something like this) works an current Ubuntu pretty much out of the box and the setup via network manager (nm-applet) is convenient. But it does not ...
4
votes
3answers
526 views

How do I setup a Ubuntu network?

I do some voluntary work for a small private K-12 school, and they just received a donation of about 20 used computers from a large corporation. They came with blank hard-drives, so I need to install ...
2
votes
2answers
463 views

Virtual Ubuntu Network Configuration

I have Ubuntu as main OS. I have created virtual Ubuntu in Sun VirtualBox and I get this error: can not connect(ssh)/ping computers in local network. If I configure network manually I even can not ...
6
votes
4answers
2k views

Network print to brother MFC-7420

I am trying to pint to a Brother MFC-7420 from my ubuntu 10.04 machine. The brother is attached to a windows XP machine and is shared. This is what I have tried: System->Administration->Printing, ...
2
votes
2answers
1k views

How to seamlessly connect two LAN's?

I'm going to connecting two LAN's in some way, I imagine some form of VPN tunnel between the gateway/router on each side. Both routers have Ubuntu-server 10.04 installed, but the only vpn-like ...
0
votes
1answer
599 views

Ufw causing trouble with DHCP or WPA? [closed]

It appears that enabling UFW is causing my network connection to drop periodically on a WPA-Enterprise network, according to the network-manager GUI app (and the lack of a server response to web ...
0
votes
2answers
596 views

Trouble with UFW blocking stuff from NAT machine to inside of NAT

I've got a NAT box (Ubu 10.04) running ufw with the following sudo ufw status verbose: Status: active Logging: on (low) Default: deny (incoming), allow (outgoing) New profiles: skip To ...
2
votes
3answers
1k views

Create a hamachi like NAT based VPN tool

Is there a tool like Hamachi (https://secure.logmein.com/US/products/hamachi2) which works on ubuntu? Bonus points if it can be paired with something running on windows/mac.
1
vote
2answers
731 views

connecting and copying files with scp — ubuntu 10.04

I have a work computer. I have a home computer. I want to be able to share files between with scp, both our computers are behind routers, which assign a local ip. 198.168.0.* As well as knowing their ...
48
votes
5answers
14k views

How do I find out which process is eating up my bandwidth?

I think I'm being the victim of a bug here. Sometimes while I'm working (I still don't know why), my network traffic goes up to 200 KB/s and stays that way, even tough I'm not doing anything ...