Managing and using network connectivity on a Ubuntu system

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6
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2answers
3k views

Printing PDF-files via network extremely slow

I encounter grave problems trying to print PDF-files, no matter whether I use Evince, Okular or any other linux program. The Documents are printed extremely slowly or even completely fail to print at ...
5
votes
4answers
2k views

How do I get started setting up a Small Office / Home Office?

This is my first post at here. I have been using Ubuntu for 3-4 years. However, I have been the only Ubuntu users among my physical circles (I get to know a lot of other users online). Recently, I ...
0
votes
1answer
182 views

T61 ThinkPad, Ubuntu 10.04.2, fixed address, no connection

I have Ubuntu 10.04 installed on my desktop computer which has a device with a fixed address connected to a gigabit port which has a fixed address assigned to it. They happily communicate. Now I am ...
2
votes
1answer
2k views

Do the brcm80211 drivers need patching to work correctly in airmon etc?

I am trying to use the broadcom brcm80211 drivers along with a BCM4313 chip and aircrack-ng suite of programs but airodump only ever lists clients for WEP protected access points. I have setup a WPA2 ...
1
vote
1answer
613 views

ddclient not working without sudo

When I run ddclient (DynamicDns Updator) without sudo, I get WARNING: file /etc/ddclient.conf: Cannot open file '/etc/ddclient.conf'. (Permission denied) stat() on closed filehandle FD at ...
3
votes
1answer
11k views

How to redirect a URL to a custom IP address?

I have an Ubuntu machine that I'm using as my home Internet router. It uses a USB mobile broadband modem as its Internet connection, and shares this with another router (via the router's "Internet" ...
11
votes
1answer
3k views

How do I ignore a proxy if not available?

Following the instructions in Best way to cache apt downloads on a LAN?, I've set up a caching proxy in my local network. Since that machine is not always up, I'd like to be able to refresh the ...
6
votes
3answers
1k views

Connecting to WPA2 network from console

How can I connect to a WPA2 Encrypted Network from the Terminal/Console? I've wanted to remove the whole x-window system and use a Terminal based system only to free up any available memory and ...
1
vote
2answers
96 views

Computer stops randomly. Continues after user activity [closed]

Background: I was trying to do a long SMB to SMB network transfer on a computer running xubuntu, but I've encountered a very weird problem: My computer loses its network connection after random ...
1
vote
1answer
104 views

Only the first computer can connect to any given VPN network [closed]

I'm using Ubuntu 10.10 with Firestarter to share the Internet connection. There are some people on the network that need to connect to an external VPN. The problem is that only the first computer ...
0
votes
1answer
581 views

Why is my laptop's wireless Internet connection slow?

I'm sitting on the same level as my wireless router but still the internet is acting pretty slow. PING any-fp.wa1.b.yahoo.com (69.147.125.65) 56(84) bytes of data. 64 bytes from ...
0
votes
2answers
836 views

Problem using mobile broadband and wire network at the same time

maybe someone can assist a beginner to solve a problem. I have set up mobile broadband and wired network in the network manager in Ubuntu 11.04. Yet, they won't work at the same time. Wired network ...
3
votes
2answers
3k views

How to bridge network ubuntu server?

I am an Ubuntu Server user. I have two ethernet cards which I want to use as eth0(WAN) and eth1(LAN). However, I have three gateways, each with a different subnet. Like this: 192.168.20.12 ...
8
votes
2answers
9k views

Wireless keeps cutting out every several minutes on a Realtek RTL8187SE

The internet keeps cutting out every several minutes, sometimes it lasts longer but it happens eventually. I can still use the internet if I disconnect from the menu and click connect again. Any help ...
1
vote
3answers
2k views

DNS server not responding

From time to times I have to reboot my Ubuntu 11.04 remote desktop. Once it up and I run Cromium browser with many tabs (20 for example) dns server doesn't respond anymore. At beginning I suspected my ...
0
votes
1answer
83 views

How can I connect to my machine which is connected to internet via dsl?

I've configured my machine with dyndns.com so that I can use the ssh and vnc but the problem is, the machine is connected to internet via dsl,. so it uses a network ip address ex (192.168.1.xxx) ...
1
vote
1answer
138 views

My networking drop down becomes unresponsive very often

The networking tray item that lets me choose a network often stops being responsive. How can I reload or reintialize the menu without restarting? How can I fix it so it works more consistently?
5
votes
4answers
9k views

Adding additional DNS search domains when using DHCP

How can I add additional DNS search domains to a network connection which is configured using DHCP? At work, we have several sub-domains (test.example.com, dev.example.com, etc), and I've grown tired ...
2
votes
1answer
409 views

NIC stays on after shutdown

Network stays on at 1Gb after shutdown...with Windows 7 it would just shutdown with the rest. Is there a way to make the NIC behave as in Windows 7, this is not the router's computer.
0
votes
1answer
2k views

How to open TCP port 7777 in control panel?

I am initiating file transfer using tcp on openfire server. But I am not able to open the port number 7777, from which I need to send files. I changed the security setting in the admin console panel ...
1
vote
1answer
144 views

Can I manage Ubuntu workstation through Windows like Local or Global Group Policy?

Can I manage Ubuntu workstation through Windows like Local or Global Group Policy? I was told Likewise Enterprise Group Policy could do it, are there any open source solution(s) we could try?
0
votes
2answers
4k views

How to enable mobile broadband?

I used to use mobile to connect via usb. Recently I have upgraded to ubuntu 11.04. Now I can not enable the mobile broadband. When ever I am enabling by checking the mobile it automatically getting ...
2
votes
0answers
225 views

Logging into Skype breaks wireless connection [closed]

I'm running Ubuntu 10.04 and just installed skype. Whenever I try to sign into skype, my internet connection breaks. I remain connected to my wifi network but can't connect to the internet. The ...
1
vote
2answers
891 views

Monitor network status on Ubuntu 11.04

How to monitor bytes received/sent in a network session in Ubuntu ? I'm very new to ubuntu, so dont give links which requires to compile files or so...
1
vote
3answers
1k views

Safe Home Network through WiFi

Maybe this is such an obvious question that it's a duplicate. I have Ubuntu 10.10 on both my PC and Laptop. The Laptop connects to the Internet through a WiFi router. The PC connects to the same ...
2
votes
2answers
8k views

Wireless not detected on an hp Pavilion g6 - RT5390PCIe

I just bought an HP Pavilion g6 laptop and I installed Natty Narwhal alongside Windows 7. In Windows 7, my WiFi works perfect but in Ubuntu it absolutely (no matter what I do) won't detect my home ...
0
votes
2answers
648 views

eth0 missing after upgrading from Hoary to Dapper

I'm trying to upgrade a fairly old server that's been running Hoary for the last five years. I followed the directions on the wiki, but when I restarted after upgrading to Dapper, eth0 disappeared ...
3
votes
1answer
3k views

How to connect to a wireless network that has a two word name with a space?

Ok, I have searched for some time in earnest for an answer to this question. I have a Beagleboard which has Ubuntu 10.10 Minimal install for Arm running on it. With the default install, minimal ...
3
votes
1answer
3k views

How do I configure multicast?

Can some one please explain the steps required to configure a multicast in Ubuntu? I have a simple program taken from Internet. I get errors when I execute the client program. I get the error as: ...
6
votes
2answers
2k views

Server automatic reconnect?

I'm trying to setup a Ubuntu hardware firewall (just for fun :D) and I was wondering if Ubuntu's network scripts could automatically reconnect to the wired interface (eth0) when the connection is ...
5
votes
3answers
3k views

Can nagios3 automatically generate a network map?

Have just installed nagios3 onto Ubuntu Server 10.04. A clean install. All plugins installed. The nagios status map only has localhost and gateway discovered. Is there a way for it to scan our ...
9
votes
4answers
17k views

Cannot connect to Samba share from Nautilus

I have Ubuntu 10.04 and I would like to connect to my Samba shares which are on a DLink DNS323. From Nautilus in "Places" -> "Network" I can easily navigate to the DND323 and see the available ...
4
votes
1answer
3k views

sharing internet between network interfaces

I have a laptop with lubuntu 11 with two network interfaces, wireless and wired. Wireless interface connects to the router with DHCP and provides access to the internet. The wired interface has a ...
2
votes
2answers
3k views

Losing ip addresses, during cable disconnects

I have two Ubuntu PCs whose network cards connected directly to each other with cross-over cable. I have assigned ip addresses manually to their interfaces using command similar to ifconfig eth0 ...
2
votes
1answer
284 views

How can I limit the number of open AF_INET sockets?

Is there a way to limit the number of concurretly open AF_INET sockets (only)? If so, how do I do it, and how will the networking behave if I'm above the limit? For background: My cheap commodity ...
0
votes
1answer
534 views

NetworkManager, OpenVPN and float

I'm trying to use OpenVPN to connect to a work network. Unfortunately, the work network is behind a NAT, which means I have to use the float option to make it work. Apparently, NetworkManager does ...
4
votes
4answers
277 views

How can I trigger something once I connect to internet?

I wonder how can I make the machine do something each time it connects to internet ? like checking for updates once I'm connected to internet ? Thanks
1
vote
1answer
321 views

Usual Wireless Password Rejected

I own an: Linksys WMP600N PCI Wireless Adapter with Dual-Band and have recently installed Ubuntu. It detects my home network (with about 3 bars), however, when I enter the wireless password (which ...
0
votes
1answer
584 views

Does the Netgear WPN511 PCMCIA card work with 64bit natty?

Hello fellow Ubuntu users! I am looking to purchase the Netgear WPN511 PCMCIA card to use with Ubuntu Natty 64-bit. Does this card work with 64-bit Ubuntu? If it does not, can someone recommend a ...
2
votes
2answers
802 views

No longer able to connecto to WPA wireless network. [closed]

I used to connect to a wireless network at the place where I live providing a password using WPA (don't really know what that is), it's been a few months since I can't connect anymore, the problem is ...
2
votes
1answer
3k views

How do I get a Belkin F5D8053 wireless adapter working?

I've tried getting my Belkin N Wireless adapter to work on Ubuntu many times with no luck at all. Each time I seem to arrive at a dead end. After some thorough searching of UbuntuForums and WifiDocs ...
2
votes
2answers
2k views

Can I use a desktop as a network server?

Pardon me if I'm asking the wrong question. But I am a newbie in networking and I'm not sure what direction to go on this. I have just setup an Ubuntu Desktop. I am planning to convert it to a ...
1
vote
1answer
6k views

Is it possible to give two IP addresses for the same host name?

I want to give two ip addresses for same host name. Like in /etc/hosts file: xx.x.x.x example # if system is connected to dhcp y.y.yy.y example # if system is connected to VPN So is it ...
3
votes
1answer
2k views

How do you change udev rules without restarting (e.g. to change eth1 to eth0)?

TLDR; How do you apply changes to /etc/udev/rules.d/70-persistent-net.rules without restarting? (See this documentation about ethernet interface logical names.) Long version: I have a bootable USB ...
2
votes
2answers
17k views

Could anyone help me get my NETGEAR WNA3100 (Broadcom BCM43231) wireless adapter to work?

I have just moved back to Ubuntu from Windows 7 and a few months ago, I bought a NETGEAR WNA3100 wireless adapter because my old adapter had broken. I plugged in my adapter and it doesn't seem to ...
1
vote
1answer
204 views

How to install ubuntu networking

I installed ubuntu server when I was not plugged into the network. I selected configured network at a later time when it asked about DHCP. How do I now install the network? There is no eth0 entry in ...
7
votes
2answers
8k views

How can I enable wake-on-lan permanently?

I want to enable wake-on-lan for my network cards, for always. The community guide recommends adding the relevant command to /etc/interfaces. In past experiences editing Ubuntu conf files, it's ...
5
votes
3answers
4k views

Check if IP is static or dynamic programmatically

I'm trying to determine whether my IP has been statically or dynamically assigned in Ubuntu 11.04 from within C. The closest I've come is examining /var/lib/dhcp/dhclient.leases, but that doesn't ...
1
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1answer
57 views

How can I get the Default files .. Networks / Hosts / resolve / and whatever else I changed to try and get up my webserver?

Does anyone have the original.. Default Hosts File, Resolve File.. and networks file? Please someone help me get these back to normal so I can put up a web-server. I'm tired, just to set up a ...
1
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3answers
2k views

What about Internet problem in Ubuntu 11.04?

I have a problem in Ubuntu 11.04 that Internet cannot work when i run my PC , i have dsl in my computer and when Internet cannot run i pull Cable and put it again these problem every time when i run ...