Managing and using network connectivity on a Ubuntu system

learn more… | top users | synonyms (1)

0
votes
1answer
103 views

Make application / service priority really high

I am using two Ubuntu computers, I use this Synergy application to share mouse and keyboard. However when the Synergy server computer is using peak CPU usage, the mouse pointer gets stiff. How do I ...
2
votes
1answer
3k views

Internet disconnects by itself and never reconnects unless system restarted

I am using Ubuntu 13.10 and a wireless internet from a modem "Reliance Netconnect" for the internet. I've installed Ubuntu two days back along with my Windows system. So here's a detailed summary of ...
1
vote
1answer
1k views

Wireless Won't Connect in 14.04

I'm still very new to Ubuntu and I need help resolving an issue with my wireless. My connection shows up clearly as "dlink" but ubuntu simply won't connect to it. It worked fine downloading updates ...
1
vote
2answers
2k views

Dell Inspiron Intel 7260 Wifi connects and then drops on Ubuntu 14.04

I've been trying to connect my wireless card unsuccessfully. I've tried similar questions/answers with no luck. I tried with Ubuntu 13.10 with same results but loading latest iwlwifi-7260-7.ucode did ...
3
votes
2answers
5k views

Rtl8187 wireless card drops signal within seconds

My Realtek RTL8187 USB wifi card is having trouble keeping a connection for more than a few seconds, while on the same machine under Windows 7 it has no problem. When I make the connection, I have a ...
1
vote
1answer
385 views

Wifi speed dropping for HP Pavilion 15-n097sa

I recently moved to Ubuntu 14.04 from Windows 8.1. I have quite a problem with my WiFi speed dropping. When I checked it at speedtest.net it went from 30Mbps to less than 1Mbps then goes up again to ...
0
votes
1answer
2k views

Wifi not working on 14.04 notebook

I have this Acer Aspire V5 notebook, which had problems with wifi before in 13.10 and i had to use the ethernet. sometimes it randomly started working but most of the time it wouldn't. So then i ...
64
votes
5answers
57k views

Wireless networking not working after resume in Ubuntu 14.04

[Update]: The same problem exists in Kubuntu and is solved in the same manner. [Solved]: By applying the following command nmcli nm I got the following: Before suspend RUNNING STATE ...
0
votes
1answer
89 views

Connection timed out on specific ports

We have an apache server running couchdb on port 5985 (not 5984). On my computer, I have Windows 7 and Ubuntu 14 LTS. From Ubuntu, I can connect to the host via http://example.server.domain, but I ...
0
votes
1answer
502 views

How to fix: Epson wireless networked printer aborts after printing half a page

Ubuntu 12.04.4 LTS Epson Stylus TX550W multifunction printer (copies, scans, but no fax): The first time I managed to discover the printer on my wireless LAN. However, when printing the Ubuntu Test ...
7
votes
1answer
3k views

Make wifi preferable over wired connection in Ubuntu 14.04?

How do I make Ubuntu choose wifi connection over wired connection when both are connected to internet? I edited the Ethernet connection to route using the preference "Use this connection only for ...
0
votes
1answer
2k views

Directly connect Windows and Ubuntu computers via ethernet cable

I have the following computers on a network: Lenovo B570e [Ubuntu 14.04 LTS] Dell Inspiron N4050 [Windows 8.0 Professional] HP l1000 [Windows 8.1 Enterprise] Compaq [Mercury, don't know the exact ...
5
votes
0answers
3k views

How to use “docker.io” containers in Ubuntu 14.04 with IPv6? [closed]

I'm trying this: At the physical host with Ubuntu 14.04 (container's gateway for both IPv6 and IPv4), I tried: root@docker-srv-1:~# ip -6 a a 2804:XXX:4:acbd::1/64 dev docker0 Of course, host ...
0
votes
1answer
2k views

unable to connect to ethernet in ubuntu 14.04

I have HP Pavilion g6-2201ax laptop. I was working with live usb. But ubuntu detects ethernet connection but before establishing connection it gets disconnected. I have realtek RTL8168 PCIe ...
1
vote
0answers
140 views

I can only see one computer in the network, why is that?

I've installed Ubuntu on one machine and would like to connect to other Windows computers in the same network. On a Windows comnputer I can see several machines but on my Ubuntu computer I can only ...
0
votes
1answer
156 views

Cnet Network Simulator

How to install the Cnet Network simulator in Ubuntu 13.10. Why can't I install libelf package from apt-get install? It says unable to locate package.
1
vote
0answers
255 views

Network-manager fails to enable network everytime after suspension, What can I do?

I have done the upgrade to 14.04LTS, after that, everytime I suspend my computer, when I turn it on, the network-manager fails to "enable" the network, and I always have to do: sudo restart ...
0
votes
2answers
9k views

Can't Connect to Mobile Broadband 14.04 LTS

When I plug the modem I have a mobile broadband option in network menu bar, and I add new mobile broadband connection, and everything is fine. but, when I try to connect it, suddenly the Mobile ...
0
votes
1answer
1k views

WiFi is not Available on ubuntu 14.04

I have been using Windows XP since past 9 years and I just installed Ubuntu 14.04 today for my project purpose. But I am facing a problem..I am not able to connect to my WiFi connection not is there ...
2
votes
0answers
335 views

Macvlan interfaces beyond first interface fail to connect.

I've been working on a project to build a set of macvlans on ubuntu. The process I'm using comes from here. In short, I run this set of commands to build and initialize an interface: ip link add link ...
2
votes
2answers
1k views

I need a netspeed indicator for Ubuntu 14.04

I have a 3G mobile broadband connection that keeps changing network speed according to location and time and so I relied heavily on this applet ...
0
votes
0answers
142 views

Problems connecting to netowrk/wireless after upgrade [duplicate]

I just upgraded to 14.04, completed the process and restarted my laptop. Now I can not connect to my wireless network, and therefore can not connect to my internet wirelessly. Ubuntu keeps trying, ...
1
vote
1answer
74 views

Host ID on Ubuntu 12.04.3 LTS 32-bit

I would like to learn the host ID of my system, how can I do so? In accordance with the following page http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka3651.html, I checked it by ...
0
votes
2answers
1k views

Bonding interfaces not working

Everytime I put in the following code (below). The problem is that network devices become unmanaged. I set the managed to true. That didn't work. when I do the ifconfig it is missing the "bond0" ip ...
2
votes
1answer
176 views

How to direct DHCP requests based on IP

I have a home server that I want to make multicast a music stream to my network. I have the server connected to my main network router via WiFi, and I have a switch connected to the server by wire ...
1
vote
0answers
1k views

Wireless not working on Asus F552CL-SX049H

I tried Ubuntu 14.04 live on my Asus F552CL-SX049H, and the wireless is not working. Running lspci gives the following result: [...] 03:00.0 Network controller: MEDIATEK Corp. MT7630e 802.11bgn ...
16
votes
5answers
16k views

Network connection error after suspend Ubuntu 14.04 [duplicate]

I'm using ubuntu 14.04 and a DSL connection for internet. However, whenever I suspend and resume my session, I'm no longer able to connect to the internet. Could someone help me fix this?
2
votes
1answer
518 views

What happens when we cancel apt-get install manually or due to network failure

hi today I was installing mongodb using apt-get its 114 mb download , when apt-get was running I lost network connection so downloading stopped so cancelled it using Ctrl + c . Later when my ...
11
votes
3answers
23k views

Bluetooth not working in Ubuntu 14.04

My laptop is sony VPCEH15EN. In the early releases of Ubuntu like 12.04 and 13.10 my bluetooth used to work properly. But now in Ubuntu 14.04 it is not working. Here is the output of sudo lshw -C ...
0
votes
1answer
801 views

Failed to bring up eth1

We try to implement the ubuntu server as Gateway. There are two NIC cards . One is for Internet and another is for LAN. eth0 is up but eth1 is failed to up. I need to configure eth0 as address ...
4
votes
2answers
8k views

How to fix a “Software caused connection abort” error in Ubuntu 14.04?

I just performed a clean install (not an upgrade) to Ubuntu 14.04 (64-bit, PC desktop ISO) on a PC that previously had Ubuntu 12.04 installed. Upon trying to restore my \home directory from a Samba ...
0
votes
1answer
95 views

Wifi adaptor isn't recognized by Ubuntu 13.10

I have an Pavilion G6-1d80NR with a Realtek RTL8188CE WiFi card. I just recently installed Ubuntu 13.10 alongside Windows 7 and aside from having to tweak the nomodest setting from the Ubuntu setup ...
5
votes
1answer
32k views

Cannot connect to wireless in Lubuntu 14.04

I have tried all afternoon to fix this, but now I give up. I am trying to set up an old XP PC with Lubuntu 14.04. It works perfectly fine, except for the wireless connection. Connecting with ethernet ...
3
votes
2answers
13k views

Juniper network connect on Ubuntu 14.04 cannot find 32 bit Java

I have Ubuntu x64 and trying to install Juniper network connect. Installed 64bit jre/jdk, icedtea and 32bit jre sudo apt-get install openjdk-7-jre icedtea-7-plugin sudo apt-get install ...
0
votes
1answer
141 views

DHCP Server & Client

So I'm having a bit of trouble getting my DHCP server to assign and IP address to my clients. I have the dhcpd.conf file configured to assign a range of IP address to my clients as follows: ...
0
votes
1answer
86 views

Access samba share from other linux client

First of all, I'm a long-time Windows user and thought I should try something new. So be easy on me and pardon in ahead if i don't get all that linux mumble-jumble ;) So i installed a Ubuntu Server ...
10
votes
1answer
20k views

Network indicator disappeared in Lubuntu [closed]

I just upgraded to Lubuntu 14.04 from 13.10 successufully, via do-release-upgrade. But after reboot, I found that the network indicator has been disappeared, so I cannot switch different network ...
6
votes
2answers
6k views

Network only using one DNS when connected to VPN

My company has a VPN that I need to connect to. In OSX, I do this by using openvpn with the following configuration: client dev tun proto udp remote <GATEWAY_ADDRESS> <PORT> resolv-retry ...
3
votes
0answers
3k views

Wireless connection error for SOME networks

I have just installed Ubuntu 14.04 LTS and everything about wireless was ok until I come to work. 14.04 recognized & successfully connected to my home wireless network but it does not connect to ...
1
vote
1answer
219 views

How can I unlock ports to access server via url?

some weeks ago I've prepared a virtual server in Virtualbox. It has the following specifications: OS: Ubuntu Server 12.04 LTS Arch: 32 bits RAM: 1 GB Virtual Hard Disk Size: 360 GB Network adpaters: ...
1
vote
3answers
114 views

What are my network and computer IP addresses?

I'm trying to configure my locally-connected (USB) HP Deskjet F380 All-in-One to work with SANE and some PDF software (as per the instructions at https://help.ubuntu.com/community/sane.d%20tutorial ...
1
vote
0answers
914 views

kubuntu 14.04 - wireless connects but cannot ping or navigate

I just installed kubuntu 14.04. Wi-fi scans correctly the networks, connects correctly via WPA to the wifi network, but can't ping 8.8.8.8 or navigate. Any hints? Here follows a report: ########## ...
0
votes
1answer
3k views

VirtualBox: Simulate network and DHCP Server - cant reach hosts

I have 4 Virtual Machines with VirtualBox and I want to set up a virtual network like this: The VMs have multiple eth interfaces using "Internal Networking" mode in Virtualbox. My goal is to be ...
1
vote
0answers
176 views

Only HTTPS sites are opening

After updating my Ubuntu 13.10 on 14 April 2014, I am not able to access HTTP sites while HTTPS sites are working perfectly both in Firefox and Chrome. My OpenSSL is built on: Mon Apr 7 20:33:19 UTC ...
0
votes
1answer
529 views

PPTP VPN won't reconnect after faluire

I configured a PPTP vpn in /etc/network/interfaces this way: auto tunnel iface tunnel inet ppp provider server1 The link is correctly broken up on boot or when I issue ifup tunnel, but when it ...
1
vote
1answer
760 views

Start wicd before waiting for network configuration

I have a small, usually headless media server at home, and I'm attempting to change its primary network interface from wired ethernet to WiFi. To that end, I installed wicd, which seems to be great ...
0
votes
2answers
3k views

How do I with ufw deny all outgoing ports excepting the ones I need?

I did the following: ufw default deny outgoing, sudo ufw allow out 80 which I thought would let me use the Internet but didn't can y'all help? Also are there any other ports used by Ubuntu for which ...
1
vote
1answer
2k views

Ubuntu server 12.04 LTS Network problem

Ok everyone, I am "sorta" new to ubuntu and am now running a Ubuntu 12.04 LTS server. I did a basic install of 12.04 lts 64-bit. After initial boot I logged in and ran 'sudo apt-get update'. After ...
0
votes
0answers
15 views

Cannot scp/rsync into live cd [duplicate]

I'm trying to scp into a box running 12.04 32bit livecd. The machines are connected to same switch & can ping each other just fine. I use the usual args, eg- scp -rp ...
1
vote
1answer
1k views

How to edit /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts and similar files and why they can (not) be edited

I a trying to edit the following file (ls -alstr output): 0 -rw-r--r-- 1 root root 0 Apr 15 17:07 /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts Unfortunately, if I try to edit it with vim or simply ...