Managing and using network connectivity on a Ubuntu system

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How to share files between two machines in a network with a router?

I have a notebook with ubuntu 13.04 and a desktop with Debian 7.1.0 and I want to know how can I share files between the two machines, I'm using a router and the notebook is connected to the wireless ...
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1answer
2k views

Broadcom Wi-Fi Adapter not recognized

I'm trying to get wireless card working, Conditions: ubuntu 12.04 3 sony vaio duo 13 Wi-Fi Adapter Broadcom BCM43241 (802.11a/b/g/n) However, first of all $ lspci 00:00.0 Host bridge: Intel ...
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2answers
4k views

How can i give internet access to local network via DHCP/Gateway server?

I think i now find myself somewhere between cognitive overload and like a babe lost in the woods. Thus i hope someone out there can assist me! :) I setup a Ubuntu 12.04 server on my home local ...
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1answer
17k views

How to reset ifconfig counters?

When i run ifconfig eth0 see following lines: eth0 Link encap:Ethernet HWaddr 08:00:27:42:81:a7 inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0 inet6 addr: fe80::...
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1answer
11k views

How can I allow ssh connection from an IP subnet on port 10022 using iptables?

I need to set up a server with public IP for bandwidth testing, and I already have a script to drop all incoming traffic except for the ports I need. I have changed the ssh port from default (22) to ...
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2answers
4k views

Cannot make mobile broadband connection in Ubuntu 13.04

I have Ubuntu 13.04 and I bought yesterday a Vodafone USB stick for internet connection. I am located in Romania. This is what I've did: First Thing Network Connections, added connection. Selected ...
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2answers
3k views

apt-get not working behind restricted internet access

I have boxes running in a company but they have internet browsing and firewalls for security. When I do apt-get update or install it fails. But I have a remote server which ip is only allowed to have ...
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2answers
711 views

Accessing Network through/with Active Directory (network authentication, printers, etc) [duplicate]

In my High school the network (local network with printers and file server + internet access) is using Active Directory for authentication. If I want to print/access the file servers with Ubuntu I ...
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2answers
13k views

Host two separate web servers on the same IP

I currently have a Ubuntu web server with Apache setup and running wonderfully, I want to do two things, I want to setup two more boxes which would be on the same WAN address but of course have ...
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0answers
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How can I enable and keep wifi without restart networking service in ubuntu server? [closed]

I've just installed Ubuntu 13.04 x64 server, and I've been able to connect to my wi-fi network during the installation process. However, since I boot it, two messages appear (both "Waiting for network ...
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1answer
3k views

Wired network problem 13.04

I used to not be able to connect with my wired connection on Ubuntu 13.04. It worked magically sometimes and I clicked around in the settings. Now it's working consistently. I remember playing around ...
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1answer
10k views

Manually connecting to a network via terminal

I currently only have wired internet via a cable modem connected to an Airlink 101 ASW105 switch. It works fine for my wife's mac. However, my laptop does not connect; I've tried connecting via eth0 ...
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1answer
712 views

IndexError: list index out of range

#!/usr/bin/env python import httplib import sys #get http server ip http_server = sys.argv[0] #create a connection conn = httplib.HTTPConnection(http_server) while 1: cmd = raw_input('input ...
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1answer
1k views

Network Simulator for Ubuntu 12.04

I'm looking for good open-source network simulator programs which I can use on my Ubuntu 12.04 I know about Cisco-packet tracer and I used it in my 32 bit machine earlier. But now my 64 bit machine ...
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1answer
45 views

I can not connect to the internet

I have installed ubuntu on two different computers. In both cases it tells me it needs to download the drivers for the network card, but can not conect to the internet.
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1answer
2k views

How to redirect all requests within a wlan using ad-hoc to a specific address or hostname

I'm setting up an ubuntu embedded system as a "master" server which will then broadcast to clients using ad-hoc in a wlan. The purpose is for a client to access the wlan and then access a webapp on my ...
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9answers
42k views

Why is the /etc/hosts file not working?

I have been having problems with this for a while and have tried everything I know, so I figured it was finally time to ask for some help. Any edit I make to /etc/hosts just doesn't work. Example: ...
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2answers
23k views

No internet connection on Ubuntu Server 12.04 LTS

I have an Ubuntu server and I cannot get Internet connection over this. The IP,subnet,gateway and the 2 DNS servers that I have been given is standard addresses that I must put into. I will give ...
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2answers
2k views

Juju GUI public IP

I have been trying to install juju with juju-gui on my virtual machine (Fresh installation Ubuntu 13.04 64-bit) To configure my local environment I installed mongodb-server and lxc. After ...
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2answers
842 views

not sure I set my host name right need someone to straighten me out

I just installed Zimbra and I think I screwed up my host name trying to get it to install. I did get Zimbra installed but the certificate is not working. (that's another topic) Here is my host file: ...
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2answers
1k views

One Ubuntu laptop on wifi occasionally makes other laptop's connection slow

There are two Dell laptops on our home's wifi: Inspiron 1525 Latitude E5420 These connect along with several other devices (iPad, phones) with which we have no trouble at all. The laptops are ...
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2answers
578 views

L2TPV3 Support out of the box

I'm looking to do a L2TPv3 Pseudowire over ethernet. The Linux code has been around since 2.6 in the kernel, but Ubuntu doesn't seem to support it without a kernel recompile. What is your suggestion ...
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1answer
479 views

Understanding Iptables

iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 7000:7010 -j ACCEPT I trying to understand the -m state --state NEW part. Searching through the man pages and correct me if I am wrong ...
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1answer
699 views

Why can i not print to a network attached printer from Ubuntu?

I am using my Rasberry Pi as a print server using Samba. I have followed this tutorial, but i cannot print from my ubuntu laptop. I have added it as Windows Printer via Samba. But i get the ...
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1answer
6k views

Wired connection problem (Ubuntu 13.04, Realtek RTL8111/8168 Ethernet controller)

Last week, I experienced a problem with wired connection on my Ubuntu 12.04 installation. I'm in a college dorm and I have to connect to the dorm network using 802.1x security. It worked great on both ...
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0answers
372 views

How to share a internet connection using wireless to a galaxy note/2?

Currently I am using Tata Photon+ usb modem as my internet source. I need to share the network from my laptop to my Samsung Galaxy note 2 and samsung galaxy note. I tried searching many posts but it ...
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1answer
224 views

Eth0 turns on with DHCP after reboot

I have SUPERMICRO SYS-5015A-EHF-D525 with IPMI and am having a strange problem during reboot. I am running Ubuntu 12.04.2 LTS server. The "primary" network interface that is being used for activity ...
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1answer
1k views

Xubuntu - manually restart network after reboot?

I am running Xubuntu (12.04 LTS) and something is wrong with my network settings (for wireless network using DHCP and WPA). Whenever I reboot, after the access to the network is not working unless I ...
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0answers
97 views

Is it necessary to change hostname following cloning to multiple machines?

I am cloning multiple laptops in a school environment with edubuntu 12.04. There are some network issues that have resulted with machines not connecting to the wireless. There are 130 machines in ...
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1answer
22k views

How to make SNMP Agent accept connections from other hosts in the network?

I have configured SNMP Agent in my system with ip address 192.168.1.1 I have configured SNMP Agent in it using the following tutorial I have modified the lines as follows In the file /etc/snmp/snmpd....
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5answers
93k views

How to disable IPv6 on Ubuntu?

I disabled IPv6 on an Ubuntu box which has ssh and rsync running. But both of these are still listening on an IPv6 address. How should I fix this? root@box.com:~# sysctl net.ipv6.conf.all....
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1answer
736 views

Ethernet and Wireless not working in Ubuntu 12.04

I installed Ubuntu 12.04 on my computer using Wubi recently, and I'm unable to connect to the internet using either Ethernet or Wireless. At first, it was showing these errors while starting up: ...
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3answers
4k views

Wireless Internet not working - cannot activate broadcom proprietary driver

I have seen this question asked by others but despite trying as many solutions as I can nothing seems to be working! The closest I have come is using the answer to this question Broadcom driver woes ...
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2answers
6k views

Having trouble installing Bradcom STA driver

I just installed Ubuntu and love it so much, its so fast now. But I have a problem connecting to the internet. I checked and saw I have to install the driver Broadcom STA wireless driver but every ...
3
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2answers
16k views

Networking stop/waiting error

I wanted to set up a bridge connection for my VMs (I am using KVM). I modified my etc/network/interfaces file and its contents are: auto lo iface lo inet loopback auto br0 iface br0 inet dhcp ...
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1answer
254 views

Broadcom BCM4318 Wireless LAN Controller ISSUE

Basically, I installed Ubtunu from scratch the other day. It was working fine, the Ethernet was easy. I just plugged it in and off it went. Now today I did something stupid, thinking I could enable ...
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1answer
2k views

Can't get Broadcom 43142 drivers to work after installation on 5420 Inspiron

I'm a complete newbie to ubuntu, I've already installed and reinstalled the Broadcom driver required done a numerous amount of steps on terminal but I can't seem to get wireless working. However, my ...
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1answer
64 views

How can I configure a computer to connect to the internet through another computer that has two NICs?

I use a hard wired connection from my box to my router, I have an older system without a wireless card and want to run it ad hoc. My master box is a Dell Optiplex gx270 running Ubuntu 12.04. The box ...
2
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1answer
752 views

Wifi card can see network but cannot connect

I just installed Ubuntu 12.04 on a Toshiba Satellite. I am able to see many wireless networks, but I am not able to connect. Here is the output of various commands that found looking for existing ...
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0answers
361 views

Should I disable avahi-daemon?

Every time I connect my computer to the network, I get a long list of network printers which I cannot use. In this page (see comments), someone suggested disabling avahi-daemon. I would do it if I ...
3
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1answer
4k views

Some websites do not load or load without css styles (longtime problem) [closed]

I have a problem which i am unable to solve for about 2 years and its the reason i am not using Ubuntu as much as i would like to. I am no networking expert so some user friendly or newbie answers ...
5
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1answer
3k views

How to perform something like windows domain or active directory in Ubuntu Environment

I am already running old windows 2008 server used for DNS Server and Domain Server. My users can use the office computer only if they have username registered in the domain server. Also, domain server ...
2
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1answer
448 views

Ubuntu 12.04 having strange issue with WPA2/Enterprise

I'm pretty new to Ubuntu and I'm not sure that I'm going to state all the necessary information, so please don't hesitate to ask me for more. I'm running Ubuntu 12.04 LTS on my Dell Latitude E5430. ...
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2answers
10k views

Ubuntu 13.04 and Reliance Netconnect USB Modem

I have recently procured a Reliance Netconnect+ USB connection for accessing internet. I have the following observations: Netconnect+ Modem is detected by Microsoft Windows but is not detected "...
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1answer
942 views

Fail to see sharing in one computer of 3

I have 3 computers, all Ubuntu 13.04. I have shared folders on all which I would like to be able to access on the other computers. For some strange reason the 3rd computer can only see its own shared ...
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1answer
1k views

Inproper connection using RTL8192CU 802.11n WLAN Adapter

Am using Ubuntu 12.10 on a philips MT2400 unit and have a BT Homehub2. Have just brought the TP-Link Wireless N USB adapter (TL-WN823N) to replace a belkin that didn't want to play ball. It can see ...
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2answers
4k views

Can't connect to PPTP VPN, even though it used to work and I didn't change anything

I am pretty new to Ubuntu and Linux, so forgive me if this is obvious. I set up a PPTP VPN connection the other day. It worked perfectly fine, but one day to the other, it didn't anymore. I used it on ...
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1answer
2k views

Setting up wireless internet on Ubuntu 12.04 - Errors with Broadcom STA wireless driver

I have recently installed Ubuntu 12.04 on the Windows partition of my Macbook Pro Model 8.1. Everything seemed to go smoothly during installation however as I am trying to connect to wireless ...
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2answers
1k views

Wake-on-LAN works with Windows 8 but not with Ubuntu

I have a PC that has a Windows 8 partition and an Ubuntu 13.04 partition. I am trying to get wake-on-lan to work. Everything works fine on the Windows 8 partition: I can wake-on-lan from both the ...
0
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1answer
282 views

I have no internet connection after upgrading from 12.04 to 12.10

I upgraded Ubuntu to 12.10. It seemed to work fine, except that I get no response from Internet. sent ping 8.8.8.8 reply icmp_req=112 ttl=47 time=27.6 (mnimum time, max time 30.5) How can this be ...