0
votes
0answers
19 views

My freshly installed 12.04 pc cannot see 11.10 PC on network

I just freshly installed 12.04 on a PC. I am trying to connect to another computer in the room running 11.10. The 11.10 machine shows up in the Network portion of the Sidebar on the 12.04 box. On ...
3
votes
2answers
2k views

Why is ufw logging 'BLOCK' messages regarding a port for which ufw is configured to 'ALLOW' connections?

Here's an example log message: May 25 10:36:07 myserver kernel: [7057243.392334] [UFW BLOCK] IN=eth0 OUT= MAC=00:02:55:67:82:eb:00:06:b1:3a:ef:62:08:00 SRC=69.197.128.26 DST=192.168.100.101 LEN=44 ...
1
vote
0answers
422 views

Cannot connect to WiFi with Ubuntu 12.04

I have a Dell Latitude E6410 that I cannot get to connect to a specific WPA-Personal Wireless network when Ubuntu 12.04 is installed. What is strange, is that when I have 11.10 (32-bit) installed ...
1
vote
0answers
196 views

networking problem on ubuntu 11.10 dell vostro 3360

I purchased a pre- installed Ubuntu 11.10 Dell vostro 3360. I tried to connect to wifi at home which I was able to without any problem. In my office i looked forward to connect to the wifi and it ...
0
votes
1answer
181 views

how to install driver for atheros ar8161 in ubuntu 11.10

I am completely new in using ubuntu, studying painful and trying to find a way. most discussions are for ubuntu 12.10, so what packages should I install for this driver if I use 11.10?
4
votes
1answer
1k views

squid3 PAM_Auth authentication not working

I'm attempting to run a squid3 proxy server with authentication for any user that has a login to the server. I've followed these instructions, and I am prompted for a username and password when I ...
0
votes
2answers
3k views

How to resolve “Network host is busy; will retry in 30 seconds”?

I have added a network printer, a Konica Minolta C253, via cups by its IP (http://10.0.0.42) under the http://localhost:631/ cups webfrontend on an Ubuntu 11.10 client. I used the documented ...
1
vote
2answers
337 views

Direct X-forwarding

I'm struggling to set up X-forwarding between 2 different machines on my local network and my ubuntu desktop. I'm able to connect using ssh x-forwarding one one machine, but the other machine (a Qnap ...
5
votes
2answers
554 views

Everytime i am trying to connect to my box using SSH, its failing not connecting

From any other PC doing SSH to my Ubuntu 11.10,is failing. My network setup: Telenet ISP (Belgium) > Fiber cable < > RJ45 cable straight > to Ubuntu PC Even the SSH is running: Other PC: ...
1
vote
2answers
1k views

Ubuntu can't download files during update to 12.04 (Failed to fetch)

I have a fail during upgrade from 11.10 to 12.04 (Failed to fetch) I've been trying to update ubuntu from 11.10 to 12.04 for a while (from Update manager). But every time I do the update, after ...
1
vote
2answers
314 views

iptables sharing internet connection with restricted access

I am trying to configure an ubuntu server to share internet access from eth0 to client systems on eth1 however I only want to allow access in/out on port 1688 and also resolve host names while ...
0
votes
3answers
2k views

Packet loss with Ubuntu 11.10

I have a machine with Windows 7 and Ubuntu 11.10 In Ubuntu I have about 30% packet loss when I make pings either to my router gateway or to an external site such as google.com, so my internet ...
1
vote
0answers
112 views

Internet Data Card slow in Ubuntu 11.10 [closed]

I am using a MTS data card which promises up to 3.1 mbps, but it gives me only 0-4 kbps. Is this an Ubuntu problem?
1
vote
1answer
2k views

I keep losing the Internet connection in Ubuntu 11.10

I recently assembled a new desktop with an ASUS PCE-N15 wireless network adapter and my home wireless network is detected and I am able to connect to it and even access the Internet. However, after ...
1
vote
4answers
1k views

DNS stopped working on laptop

Was working fine then stopped inexplicably. I can ping the gateway/DNS router/firewall (Untangle) using WiFi and cable using WiCd. Network Manager does not work on this computer Firefox reports ...
0
votes
1answer
879 views

Problems with wired network on acer aspire 1410

The problem is the following: i can't establish a wired connection on Acer Aspire 1410 with Ubuntu 11.10 installed. Wireless connection works fine. But when i plug the network cable and disable wifi ...
4
votes
1answer
10k views

How to I enable jumbo frames on just one network interface?

I have a server with a storage network which currently supports jumbo frames. I want to enable just eth1 to have that ability. What settings do I change and what is the best way to test the ...
1
vote
4answers
3k views

No Internet Connection - ubuntu 11.10

I installed Ubuntu 11.10 recently. After the first bootup the computer freezes so I have to force-quit my computer. Then I turned on my computer after that. I tried connecting to the internet. My ...
0
votes
1answer
139 views

Strange traffic on fresh Ubuntu Server install

I've just installed Ubuntu Server on my home box after becoming partially familiar with it at work and wanting to train up as a Pen Tester. I installed the latest version on a logical partition (the ...
1
vote
0answers
227 views

Network connection fails when downloading data [closed]

In the past few weeks, I've noticed my network connection becoming unstable while downloading files. I'm not sure how to diagnose this issue. I've found that my network connections appear to be ...
1
vote
2answers
80 views

Network Problem While Reinstalling Grub

I'm trying to reinstall grub on a second disk, following the instructions at Purge & Reinstall Grub. After doing sudo chroot /mnt, when I attempt apt-get update, I get lot of failed to fetch ...
1
vote
1answer
337 views

Problems with wired connection. Help? [closed]

It randomly stops working as I'm working off a laptop, I click the option "Auto Ethernet" but it won't connect to the network again, I have to restart my laptop and then everything works fine but the ...
2
votes
0answers
95 views

Err occurred using ioctl to control my network card! [closed]

Recently I installed Ubuntu11.10 instead of the old one in my computer. But an odd bug occurred during I used the IOCTL to control my network card using the code like this: struct ifreq ifr; int ...
2
votes
3answers
1k views

Ubuntu systematically losing wired connection

I'm working on 11.10 for few recent days, everything was working perfect until today. Updated ubuntu (some certs were updates as far as i remember) and from this time, wired network stops working ...
0
votes
1answer
327 views

I don't want to manually turn on my wireless everytime computer starts up

How can I have this switched to ON automatically when I log in? When I startup my machine, that thing is switched OFF and I have to manually switch it ON before I can use the internet. I can't see ...
0
votes
1answer
1k views

Ubuntu 11.10, Wireless Connection but no internet

Right after installing Ubuntu 11.10 using the wubi.exe file, I tried to surf the web in Ubuntu. My wireless connection is found without problem, but firefox doesn't manage to load any pages. Can ...
1
vote
2answers
2k views

How do I start a service after the network is up?

In my case, squid is started before DHCP has written a new /etc/resolv.conf which results in odd errors (timeouts, 504 Gateway) when I try to load a page in the web browser. As I see it, the correct ...
1
vote
0answers
203 views

Wireless internet sharing stops working after client disconnects [closed]

I'm running Ubuntu 11.10 with the latest service packs, sharing an ether connection over wireless. Everything works fine, up to the point that the client (a laptop) sleeps or otherwise disconnects. ...
3
votes
2answers
14k views

How can I setup SSH so that it is restricted to my local network?

I'm trying to link my new laptop running 11.10 to my old laptop running 8.04 through my router using SSH. This question is asked and answered on ubuntuforums here: ...
0
votes
1answer
583 views

On restart server Ethernet went down saying not configured!

i justy have configured my dhcp server with static ip. after configuration dhcp server & routers were working fine. but after restarting server network connectivity went off. there are two lan ...
9
votes
1answer
2k views

Automatically disable wifi (wireless) when wired?

What's the best way to automatically disable my Wifi/wireless connection whenever I plug in a wired Ethernet cable? I'd like it to be re-enabled when I later unplug the wire. Also, I sometimes like ...
2
votes
2answers
697 views

How do i enable mobile networking by default?

I use a USB-Modem to connect to my PC to the Internet. But every time I connect it via USB, I have to enable mobile broadband via the networking applet on the task bar. I know it's not much work to do ...
2
votes
2answers
4k views

Network GUI Tools in 11.10+ (Whois, DNS Checker, Trace Route, etc…)

In older versions of Ubuntu there was this "Network Gui" program that had a whois option, Tracing, pinging and all the terminal commands for network but in GUI. If I can recall, I think it was before ...
0
votes
3answers
5k views

How do I correctly install r8169 Network driver?

My network driver drops out within a short time of logging on. The situation is explained more readily in the following forums thread which has not been replied to as yet. ...
0
votes
2answers
1k views

How to make an internet server as firewall using ubuntu 11.10

i have one static broadband connection which is coming to my Ubuntu server with 2 lan cards, there are 10 more PC's to which i need to provide internet connection through Ubuntu server as well as i ...
2
votes
1answer
439 views

11.10 Server does not reconnect to network after router reboot (DHCP or Static IP)

If I reboot the router (Netgear DGN2200) my Ubuntu 11.10 Server box does not reconnect to the network. This is over a wired link either with a reserved IP Address over DHCP or a static IP Address ...
5
votes
4answers
502 views

Can i use Ubuntu 11.10 for netboot?

can i use an Ubuntu 11.10 for netboot over PXE? im aware of the LTSP and other similar proyects, but i dont find information using ubuntu 11.10 (the latest)
0
votes
1answer
2k views

Cannot ping/ssh computers in LAN (including gateway) but can still access the internet

Hello people from AskUbuntu: As the title says, even though I can access the internet, for some reason, I can't ssh/ping computers in my LAN. In addition, only computers from outside the LAN can ssh ...
3
votes
1answer
468 views

What does 'webmin' come up in the netstat/lsof listening ports?

I have my own server application in C, I bind my server on localhost address 127.0.0.1 and let it listen in first case on port 10000 and in second case on port 20000. When I run command I lsof | grep ...
0
votes
2answers
614 views

Firewall configuration and consequences

I'm using Ubuntu 11.10. And I want to know something about firewall in Ubuntu, because I want to know if it could be the reason why my application doesn't work properly. Little background: I'have ...
2
votes
2answers
2k views

Wireshark problem. Can't select default interface [duplicate]

I downloaded Wireshark from the Ubuntu 11.10 software center and when I start it and want to select default interface for capture in the list of interfaces are blank. I can't select default interface. ...
0
votes
3answers
1k views

Printers get signal - but why don't they print in 11.10?

(refers to Ubuntu 11.10 Oneiric) I set up a printer connected via USB (Canon MP630) and a network-printer (Brother HL-2030 via Fritz!Box 3270). When I try to print something the files get sent to the ...
2
votes
2answers
626 views

Cannot connect to Internet after update [closed]

I did a regular update of Ubuntu 11.10 yesterday night and it didn't require a restart. After the update finished I still had connection (wired). But, today, when I tried to go to Google and other ...
1
vote
1answer
1k views

Printing Problem on Shared Printer [closed]

I'm using Ubuntu 11.10 on two machines. One has a USB printer connected. I want to share this printer with the other over the wireless network. Under Printing > Server > Settings: I have ...
6
votes
3answers
3k views

Network Computers Not Showing up

Alright, 3 machines running, two using Ubuntu 11.10 and one on Mac OS X. On the two Ubuntu machines, both have samba installed and configured on the same workgroup, "HOME". On machine 1, I can see ...
0
votes
1answer
310 views

Unstable wireless on MacBook 2,1 with Ubuntu 11.10

I just installed Ubuntu 11.10 as the sole OS on my old white MacBook 2,1. The wireless seems really unstable. The signal is always full, but sometimes I can browse, sometimes I can't. Sometimes I can ...
3
votes
1answer
3k views

Cannot connect to secure wireless with Netgear wna3100 USB

I have installed Ubuntu 11.10. I used a wired connection to download and install all of the updates. When I tried to use a Netgear WNA3100 wireless USB network adapter, it failed. Much searching and ...
1
vote
2answers
5k views

What is wrong if my wired ethernet connection keeps coming up and down? (And how do I fix it?)

On both my home and work networks, if I plug in an ethernet cable into my laptop, gnome's network manager starts cycling between saying "Wired network Disconnected" and "wired network Connection ...
2
votes
1answer
1k views

Atheros AR9285 does not work on 11.10

I have installed the 11.10 and everything went smoothly. The wifi card was automatically detected and connected to my wifi network, downloaded all the required files. But after the restart, I can't ...
4
votes
1answer
7k views

how to ping & use specific network card

i have 3 network cards , 1 Lan (wired) , 1 wireless network card & 1 is wireless usb how do i ping from specific network card ? & how do i use specific network card for specific ...