Managing and using network connectivity on a Ubuntu system

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1answer
16 views

An application is listening on ports 139 and 445, but those ports are closed. Can an application listen on closed ports?

On the terminal, when using netstat, it claims a program called smbd (which is actually Samba) is listening on ports 139 and 445, but according to a port scan from ShieldsUp, those ports are closed. ...
0
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1answer
21 views

Why am I getting disconnected from WiFi after about 15 minutes of use?

I am dual booting Windows 7 and Ubuntu 13.10 on a Toshiba Portege laptop, and for some reason I lose my wireless internet connection after about 15 minutes of use on Ubunutu after booting up. I am ...
2
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3answers
81 views

No WiFi on a system76 laptop after upgrade to 15.04

I just upgraded System76 Gazelle laptop to 15.04 and wifi no longer works. It sees many networks and tries to connect to mine, but fails repeatedly (/var/log/syslog seems to indicate authentication ...
0
votes
1answer
12 views

apt-get works via proxy, but nothing else does

This pertains to Ubuntu 14.04 behind a proxy server that requires authentication. I've managed to get apt-get working via proxy. My /etc/apt/apt.conf looks like this: Acquire::http::proxy ...
1
vote
1answer
31 views

Ubuntu Network Error (Ubuntu 12.04) [on hold]

We run a 1000BaseT, full duplex network, however we use auto-negotiate to ensure that minimal errors occur. A few days ago, all Ubuntu servers started having an extremely slow upload (to the outside ...
0
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1answer
76 views

system-config-samba not opening in Ubuntu 14.10. & 15.04

system-config-samba does not open. It doesn't matter whether I install the program through either the command line or the software center. When I try to open the program it prompts me for my password ...
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0answers
9 views

How to configure bind,apache and Joomla

ifconfig eth0:0 192.168.201.x+1 netmask 255.255.255.0 Edit /etc/network/interfaces /etc/init.d/networking restart apt-get install apache2 create file in /etc/apache2/sites-available mkdir ...
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0answers
5 views

How to run OpenVPN as unprivileged user with Network Manager?

Recently I noticed that when running openvpn as a client on my friends Ubuntu Gnome 14.10 system, the actual openvpn deamon is running as root. $~:ps aux | grep openvpn root <xxxxxxxxxxxxxxx> S ...
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1answer
34 views

How to use my ubuntu server as router?

+---+ eth1- *.1.6| S | =========| | |PC1|private net -------------------- ...
1
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1answer
71 views

Networking problems with new kernel

I am new to Ubuntu world since I've been using it for near a year or so. Software is great, but I have some hardware issues. Along with Ubuntu 14.04 come kernel witch was ok – some minor issues : ...
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votes
4answers
14k views

How to do LAN search similar to Netscan in Windows?

I use Netscan softwar to search the available computers with the shared items in microsoft windows. I could give it an IP address range and it retured the available IP address. In ubuntu is there ...
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0answers
9 views

Can't click wifi connect button after upgrade to 15.04 from 14.10

After upgrading to 15.04 today from 14.10 the 'Connect' button for wireless network connections will always show as disabled. Therefore I cannot click or press enter to attempt to connect to a ...
0
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0answers
12 views

Why do I need to restart Ubuntu 14.04 LTS for my networking scripts to work?

When I started using 13.04 LTS on my Virtualbox VM (4.3.26), I turned off network manager and wrote some scripts for dynamically updating the static IP of my laptop on any network. I was doing this ...
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0answers
6 views

Blocking a domain with dnsmasq - is dnsmasq.conf being ignored?

I'm trying to block a particular domain by having it resolved to 127.0.0.1. I set up /etc/dnsmasq.conf to block this domain, like so: $ cat /etc/dnsmasq.conf address=/blocked-domain.com/127.0.0.1 $ ...
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0answers
16 views

CMD wifi problems Ubuntu server 14.04

I want to connect my server through WiFi, but i can't get it to connect to the internet. I have been able to ping my router, which is a apple airport extreme. Everything else connected to my router ...
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0answers
25 views

Programmatically write the network-manager/system-connections

Hi i want to be able to dynamically change the the wifi network configurations, i am trying to write the "ssid" file in the Network-Manager/systems-connections/ and i changed the folder permission to ...
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0answers
41 views

how do I configure dhclient for comcast /64 prefix?

I did have everything working, but when I updated my router to a supported version of ubuntu, it broke (Ubuntu 14.4) Where things go wrong is dhclient never grabs a /64. It either gabs the IP for ...
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0answers
15 views

aircrack-ng : airmon-ng stop working after updating to 15.04 ( ioctl(SIOCSIWMODE) failed: Device or resource busy )

my aircrack-ng suite was working correctly until i updated to 15.04 i unsintal evrything and intsaled again form repositories to discard weird stuff and the problem is stil there: sudo airmon-ng ...
0
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0answers
13 views

Internet works only after Rebooting or Reconnecting

I recently installed Ubuntu 14.04 on my Dell Inspiron laptop. Initially, the Wi-Fi didn't work. But it started working after I did some update using the Ethernet. But I noticed some problems after ...
0
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2answers
3k views

Unable to execute command start-all.sh in Hadoop

GUYS I'm using this tutorial How to install Hadoop? I mean the one made by Luis Alvarado in one of the comments .. So I'm on Ubuntu 13.10 64bit Hadoop version is 2.2.0 Actually I'm a total newbie ...
0
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1answer
76 views

Login loop in Ubuntu 14.04 LTS after last updates

After the last Ubuntu 14.04 LTS update, the login was looping a guest account requiring a password though none was created. Someone solved this by creating the 50-no-guest.conf. But now, though my ...
0
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0answers
30 views

ubuntu 15.04 wireless driver is not working on HP-Elitebook 6930p

i have a problem .my laptop is HP-Elitebook 6930p now i run ubuntu 15.04. my wireless wifi driver is not working how can i fix? Please help me!
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0answers
15 views

What is an origin and solution for “port 9000: Connection refused” error?

I am stuggeling with port 9000: Connection refused error. I work on Ubuntu 14.04 and faced the problem when trying to run Hadoop in a non-distributed mode, as a single Java process (compare Hadoop ...
0
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0answers
16 views

Wireless USB Adapter disconnects from network every 5-10 minutes

My Netgear WNA1000M 802.11bgn USB wifi adapter disconnects from the wifi network I'm using randomly at very short intervals. I'm running Windows 8 on the same system and it has no issue with internet, ...
0
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1answer
24 views

Connection refused error in putty windows

I am trying to connect my VM via putty which is running on azure cloud. But i will get Network error:connection refused error,yesterday its works fine, now its not working.Also i tried using ssh but ...
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2answers
197 views

Restricting internet access of some client systems of LAN to a few websites using ubuntu gateway

How to limit internet access of most systems in my LAN to a few websites and block all the other websites? Also want to bypass that restrictions for some systems. All systems have static IP address ...
3
votes
1answer
8 views

Printer Drivers for the Epson XP-200 for ubuntu 14.04

My printer is the Epson Expression XP-200, and I am unable to locate drivers for my printer. I have tried using "Add printer" to no avail. The Epson website does not list Linux drivers for this ...
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0answers
35 views

Wireless not recognized on my Lenovo G510 laptop on Ubuntu 15.04

How do I enable my Broadcom wireless network adapter on Ubuntu 15.04 offline? I have no LAN access.
0
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1answer
22 views

Cannot get wifi working on macbook pro retina

I just installed Ubuntu on my MacBook Pro Retina, but am having trouble getting the wifi working. I followed the steps posted at Setup problems ubuntu 14.04 wifi on macbookpro 13.3 w/ retina (dual ...
0
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0answers
92 views

Can't connect specific WIFI network (Ubuntu 15.04) - I tried all solutions on the forum, but didn't work -

I'm using Ubuntu 15.05, My computer cannot connect specific WIFI network, but it's connecting this network with using ethernet port. Also when I open my computer with Windows 7, this can connect this ...
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0answers
18 views

What is going on with my networking?

I just recently discovered that there is some networking issue with my ubuntu server. Its using up all my internet bandwidth and when I type ifconfig I get this as0t0 Link encap:UNSPEC HWaddr ...
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0answers
20 views

BQ Aquaris E4.5 - USB network adapter via OTG

I tried to get a network connection via an OTG USB ethernet adapter, but it does not seem to work OOTB. The very same ethernet adapter (from Apple, 2010) works with the Nexus 7 (2013) and Nexus 5 ...
2
votes
1answer
5k views

How to setup Canon iR2520 Network Scanner?

I have at my workplace Canon imageRUNNER 2520 Scan/Print machine. I managed to setup printing but scanning I don't know how. Can somebody help me?
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0answers
11 views

Network proxy settings BQ Aquaris E4.5

I am the proud owner of a brand new Ubuntu phone and come across a basic problem right away. How can I configure network proxy settings? I have poked around in the network settings, but have not found ...
1
vote
2answers
73 views

How to get Ubuntu 14.04 to detect and connect to open WiFi on startup from USB stick

I'm an 8th grade science teacher and I have recently been given 17 mini dell computers. All are in great physical shape, however, none of them have an operating system or hard drive. I can load Ubuntu ...
4
votes
1answer
7k views

How do I get a rt2800usb wireless device working?

My brand new desktop running 13.04 has endless problems with wireless. Dozens of others are flooding forums with reports of the same problems. It worked fine for a few days, then there were a few ...
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0answers
13 views

Router swich problems connecting to the internet

Hi i have a problem whit my connection to the internet. I had one internet provider and router, then i swiched to a new one and set the new router with same name and pasword as the last one. Evryting ...
0
votes
3answers
133 views

How to install Juniper VPN on Ubuntu 15.04?

This post worked perfect for 14.04 as well as 14.10. But for 15.04 there seems to be a strange issue. The application starts and gets a tunnel ip addresses but doesn't forward any traffic. The bytes ...
1
vote
1answer
4k views

Drivers for Wireless card Asus PCE-AC66?

Where can I get an Ubuntu driver for this card? is there any? otherwise can I install a generic Wireless driver even if it works sub-optimally but at least will work. UPDATE: As per the comments ...
1
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2answers
33 views

How can I send large files between two Ubuntu devices that both are connected to a silly hotel Wi-Fi network that does not permit SSH?

I've got the network addresses of both devices but pings don't reach the computers. How can I send big files between these devices? Just to be clear, I don't want to transfer data using a USB drive ...
2
votes
0answers
131 views

Wifi and ethernet networking stopped working in ubuntu 14.04

I have a System76 Kudu Professional version kudp1, it came with ubuntu 13.10 but I upgraded it to 14.04. After the last upgrade I did it stopped detecting ethernet and wifi networks. nm-tool output: ...
4
votes
2answers
3k 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
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0answers
9 views

Netgear N600 router not connecting to wifi - help!

I'm extremely new to linux and i'm looking into using linux because my windows trial is running out and I don't have the money to buy a copy. I've been running ubuntu off of a usb to try it out, but I ...
0
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0answers
14 views

System 14.04 LTS … Staying connected with Broadcom 4312 on HP Pavilion dv6000 laptop

I am using a Broadcom b43 driver. However, my connection keeps dropping then a auto reconnect. It happens every couple of minutes. I can not maintain a reliable connection. I am running a partitioned ...
0
votes
1answer
37 views

Ubuntu 14.10 samba share not accessible from Windows 7

I'm really new to Ubuntu and Linux in general. I know this has been asked a million times but I'm trying to get a Samba share to work and I've been reading all kinds of threads but I just can't get it ...
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0answers
173 views

Can't enable Wifi on Ubuntu 15.04

I just installed Ubuntu 15.04 on my Lenovo laptop and everything seems to work fine except the Wifi. Nothing happens when I click the 'enable Wifi' button. I upgraded to 15.04 because of Wifi problems ...
-1
votes
1answer
20 views

Connect host to guest with VirtualBox on Host-Only-Network-Adapter

I am using Ubuntu on VirtualBox as guest, on a Windows 7 host. I would like to have this configuration: 1) both guest and host connected to internet. 2) guest can reach host (through ping) 3) host ...
2
votes
1answer
3k views

How to get NetExtender VPN client on Ubuntu 13.04 working?

I've got a Ubuntu 13.04 desktop and I need to connect to a Sonicwall VPN appliance using NetExtender. TL,DR, the VPN connects fine, but then I can't reach any internet or LAN websites. Details: ...
3
votes
1answer
5k views

How do I get the ath9k driver of backports-3.12-8 installed on Xubuntu 13.10?

I downloaded the 3.12-8 kernel files linux-headers-all.deb, linux-headers-generic_i368.deb; linux-image-generic_i386.deb from kernel.org and installed them via: dpkg -i *.deb Now I'm trying to ...
0
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0answers
12 views

how to connet to hidden network from terminal [duplicate]

My Ubuntu graphics has stopped working. I can only access the terminal. So I am trying to connect to a hidden network through the terminal. I have tried using iwconfig for the same. But with no ...