This tag covers anything related to home networking, errors using the official repositories, clouds and system administration. This tag also covers simple internet access issues.

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Unable to install USB Modem

I have an E-Spectrum GSM HSPA modem with a vodafone connection. And I am a new user of Ubuntu. How can I install USB 3G Modem Stick on my Ubuntu 14.04 LTS?????
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Help Getting Two NICs On Same Machine Talking Via Switch

I have a virtual Ubuntu Server (14.04) VM on Hyper-V host with three NICs - eth0 is bridged to the external network - eth1 & eth2 are attached to a private virtual switch The aim is to get the ...
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Hp pavilion dm4 wimax soft blocked [duplicate]

My hp pavilion dm4 originally had window7 on it then i switched to ubuntu 14.04 and now it can not connect to the internet. The wimax is soft blocked. How do I get it unblocked?
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WiMAX Soft Blocked help

I have an HP pavillion DM4 and the WiMAX is soft blocked. How do I unblock it so that I can connect to wifi? I have already tried the command rfkill unblock all and it did not work. I can connect with ...
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5 views

Live usb won't connect to a network created by other ubuntu laptop

I have a laptop running 12.04 and I created a network using the wifi-direct feature. I can connect other laptops to it, cellphones, toasters, washermachines, just about everything. Except a another ...
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7 views

Wired connection disabled after setting static ip

After I configured the static IP Address, I did something that prevents the network from starting. Run sudo lshw -C network -sanitize: *-network DISABLED description: Ethernet Interface Run ...
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1answer
7 views

Connect to PEAP connection with inner authentification MSCHAPv2 using only terminal

Anyone has an idea how can i do this on Ubuntu 14.04 with no GUI installed? The connection uses simple user<->password authentication with no certificate.
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7 views

Ubuntu 14.04 Desktop not automatically renewing DHCP lease

Sometimes my laptops networking just stops. I fix it by doing sudo ifdown em1 sudo ifup em1 The strange thing is, in previous releases and other *nix distros that usually doesnt produce an prompt ...
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PinguyOS latest version - networking problem [on hold]

I installed PinguyOS on a friends computer. This computer is now displaying the following strange behaviour: Unable to set custom network. There seems to be only a provision for DHCP based ...
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6 views

Setting up a transparent proxy with ubuntu server

Basically I have configured the server to take the internet on eth0 and pass it through squid out on eth1, I think haha. I have also configured the DHCP server which is working fine, it's distributing ...
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0answers
45 views

Wireless connection drops on Intel Centrino 6235

I am in a wifi network at school which has secure access and I have been using it for months now, but the problem started a few days ago. Every 3-5 minutes I lose internet access, but retain the ...
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17 views

Accessing CUPS web interface administration with a non-root user [on hold]

So firstly, I'm not an expert in servers. I'm using Ubuntu Server 13.10 and I want to make this file server a print server as well. So I'm trying to get CUPS working however I've encountered some ...
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1answer
22 views

BitTorrent programs killing networking - Broadcom wireless

This started happening after I did a fresh install of 14.04 (previously I was on 13.04). When ever I launch a BitTorrent client my DNS very quickly stops responding, and then the network connection ...
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21 views

Monitor TCP port in background as daemon

A little background: I'm in charge of a fairly old (10.04) web server that hosts lots of outdated, under-maintained sites running on out-of-date versions of platforms like WordPress, Drupal, and ...
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8 views

migration/0, migration/1 high CPU usage after executing sudo service network-manager restart

I am using Ubuntu 14.04 LTS. I am having some problems with my wifi, as it gets disconnected with Wifi Hotspot automatically and won't connect until I restart my computer. I am using wifi driver ...
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11 views

modem appears as wired connection!

I can't connect to the internet as the modem can't be detected. It all started when I installed huawei mobile partner, then network manager started to recognize my modem not as broadband but as wired ...
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13 views

Ubuntu not connecting to Airport Express

After some extensive troubleshooting I have found that my Lenovo IdeaPad with Ubuntu 14.04 LTS does not work with the Apple Airport Express. It connects fine on my other router (which is not Apple) ...
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1answer
12 views

Asus x550: unstable wireless connection

I've been getting weak signal to my asus x550 laptop running Ubuntu 14.04. As suggested by someone in Askubuntu.. I've got a good signal but wifi keeps disconnecting automatically for every 5minutes ...
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1answer
21 views

UBUNTU 14.04LTS Wi-Fi hotspot is not detected by android phone

Default creation of HotSpot in network manager is not able to detected on andriod phones of any version. There is a answer for this question in given link below but its need to install third party ...
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9 views

Wired connection and ad-hoc wireless at the same time

I'm setting up an Ubuntu Server 14.04 with a wired connection (p4p1) and creating an ad-hoc wireless network. Here's my interfaces file: # The loopback network interface auto lo iface lo inet ...
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12 views

TP-Link TL-WDN3200 driver issue

I am using TP-Link TL-WDN3200 wireless adapters in my linux ad-hoc network. Two nodes could ping each other via the WDN3200. But after a few hours idle running, one of the adapters went wrong. I got ...
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28 views

Internet issues in Vbox Ubuntu 14.04 guest OS not resolving DNS

I'm running Ubuntu as a guest OS in VirtualBox within a Windows 7 host. I'm a newbie to Linux but as a lab based scientist who wants to teach himself some basic bioinformatics I need to get my head ...
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14 views

Can not ping local site

I have the following situation: On one server in our network we have the DNS Server. Here we define hostnames for some local sites (ex: 192.160.1.6:8060 -> fisheye.idn.local). When accesing the site ...
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1answer
13 views

add multicast ip address into kernel route table

i want to add an IP (multicast 228.0.0.4) in the range of 224.0.0.0 – 239.255.255.255 in the kernel routes table, so i used sudo route -nv add -net 228.0.0.4 -interface eth0 but it gives me: ...
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1answer
37 views

Wifi Adapter can see AP, but cannot connect

My wifi card is: Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01) My problem is that when I attempt to connect to a wifi network it refuses the ...
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20 views

known issue with Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06) [on hold]

just got an assembled pc with a built in ethernet adapter Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06) is this ethernet lan card known to have ...
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20 views

Driver r8169 of Realtek

Somebody knows what happened with driver r8169 of Realtek? Internet connection works well in Windows Vista Ultimate. However on Ubuntu 14.04, it did not work. It does not recognize wired connection. ...
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1answer
38 views

Ubuntu 13.10 Internet Connection not working [on hold]

i have dual boot setup with windows 8 and Ubuntu 13.10.In windows 8 My connection is Perfect but when booting into ubuntu i cannot connect at all . The network manager states that i'm connected but i ...
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0answers
17 views

Can not “see” work pc's when connected on VPN from my home

I have created a VPN connection (my router at my work office allowed could do this) from my home pc to my work office. When I connect to my work VPN all seems great as my IP address changes to the ...
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0answers
7 views

How to set MTU for autoconfigured interfaces

I have a computer that may have multiple network devices, which are only in some cases available. Currently all network devices are configured completely automatically. Now I need to set the MTU for ...
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20 views

Ethernet connection blocks some traffic while wifi works flawlessly

I'm not sure whether it's related, but I recently tried to reroute inbound traffic from a user-accessible port to port 80 following these instructions: http://serverfault.com/a/112798 Now, I can't ...
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12 views

Upgraded server from 12.04 to 14.04 - server now rejects all connections except ping and FTP

I remotely upgraded my server from 12.04 to 14.04. After rebooting it, it responds to pings and I can ftp to it, but everything else gets rejected. Does anyone have any ideas as to what's happened? ...
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90 views

Getting disconnections on wifi [duplicate]

I'm running 14.04LTS and this is the first time using a wireless card on my computer. In my previous residence, I was able to have my computer connected via ethernet. However now that I have moved, ...
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1answer
18 views

How to set DNS exclusively for a Network Namespace

I've created a network namespace. I thought there was a resolv.conf file for each namespaces created but it's not the case on my system (Ubuntu 14.04). I don't have the following path ...
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0answers
26 views

Failed to retrieve share list from server: Connection timed out [on hold]

I have read most of the other similarly asked questions and tried googling for an answer for about an hour now, yet everything is still the same. Having just installed Ubuntu 14.04, I find it to be ...
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2answers
28 views

find mac address of all connected systems [duplicate]

How can I find out how many system are connected to the local network and how can I get all IP and mac address of these systems. Is their any command/package to show the IP details? Can I use this ...
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2answers
29 views

how i can poweroff all the computers in lan from single computer

I have 5 desktops, all running Ubuntu 14.04 64 bit. All are connecting to the Internet through the LAN (using a dlink switch), i want to shutdown all the computers from a single computer,is it ...
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2answers
23 views

windows mapped folder access

I have successfully mapped a a shared folder in windows to Ubuntu. But I can't save anything in the folder from Ubuntu. I can browse and open and all but I can't save anything to the folder or create ...
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0answers
18 views

How to connect with a Qualcomm/Huawei 3g modem

I have a 3g modem which lsusb reports as a Huawei Technologies Co., Ltd. E169/E620/E800 modem. However Windows' Network Connections panel shows it as a Qualcomm USB Modem 6000. So when I try to ...
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1answer
26 views

What is difference between arping and arp?

Guys am having a mysterious doubt in diff. b/w arping and arp. When my senior asked me i was speechless. Pls. help me am confused.
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14 views

documentroot is different when on WLAN and on the internet [on hold]

I just figured out that port 80 is blocked by my ISP so i am using a different port, and that port works from the internet, which is great, but only when i connect via a computer on the WLAN that my ...
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39 views

Problem setting up dial up internet connection

I cannot use my broadband connection. Since I have lost the wired connection option (see here), I cannot manually input my ISP name and password. I tried with this link, which recommended me to run ...
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3answers
43 views
+50

vnstat not updating

I installed vnstat on my Ubuntu 14.04 server to track my internet usage (I have a limited monthly transfer). The database never updates, however. I've tried uninstalling/reinstalling, but that doesn't ...
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0answers
19 views

print spooler service in ubuntu

I want to share a printer under Ubuntu 11.04 with Windows 7. I have installed samba and configured it to allow the printer to be browsed across the network. I have also enabled printer sharing. But ...
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0answers
14 views

how to set mmap for better performance of raw socket

req.tp_block_size=96; req.tp_frame_size=96; req.tp_block_nr=2; req.tp_frame_nr=2; if ( (setsockopt(fd, SOL_PACKET, PACKET_RX_RING, (char *)&req, sizeof(req))) != 0 ) { perror("setsockopt()"); ...
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44 views

Network indicator missing in ubuntu 14.04 64 bit

Network indicator is been missing from top right corner panel in Ubuntu 14.04 64 bit When I run #sudo nm-applet nm-applet-Message: using fallback from indicator to GtkStatusIcon. Already have tried ...
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0answers
16 views

Getting Ubuntu server to resolv new IP for a host name

I run a minecraft server on ubuntu 14.04 LTS on vm's using virtual box. In order for players to connect, their 'account' must be checked with Mojang, at sessionserver.mojang.com. The problem is, the ...
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55 views

Cannot connect via FTP on Ubuntu 12.04

I installed and configured vsftpd service on Ubuntu 12.04 using the tutorial How To Set Up vsftpd on Ubuntu 12.04. I installed Ubuntu 12.04 and then followed the tutorial, that's all I did. I never ...
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1answer
77 views

Ubuntu 12.04 - no internet after wakeup, wifi/lan connected, but reaching only local network

I have a strange problem on Toshiba Satellite NB and Ubuntu 12.04 on it. This system is working flawlessly a couple of months now already, but since last week I am getting a strange problem. I put ...
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1answer
21 views

Apache - server not resolving by /etc/hosts if I have not internet connection

I have configured many virtualhosts in my current apache2 server, in my local machine (Ubuntu 13.10). Those are different local sites, with domains which are set in my /etc/hosts: 127.0.0.1 ...