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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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
28 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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0answers
11 views

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

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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14 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
35 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
13 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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0answers
17 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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0answers
9 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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0answers
81 views

Getting disconnections on wifi

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
17 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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22 views

Failed to retrieve share list from server: Connection timed out

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
26 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
28 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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1answer
15 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
15 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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0answers
12 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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1answer
31 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
16 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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24 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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51 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
67 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
18 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 ...
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0answers
15 views

Routing internet traffic through vpn only when connected

I set up a pptp vpn server and can connect to it with my laptop without any problems. However, connecting to the vpn causes issue with routing (i.e. I am not about to connect to the outside web). To ...
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0answers
9 views

how do i create individual user access to juju? (Theory)

Evening all, This question is an effort to find a way to allow users to have their own juju-gui, and a putty connection isn't used. I know in other posts the use of iptables comes in handy, though ...
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1answer
39 views

Setting up wireless hotspot to be on at boot

TL;DR: Can I set Ubuntu up to - from boot - have the wireless hotspot turned on? My mother-in-law lives so far from civilization that she can only reach the Internet through a 3G dongle, which works ...
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0answers
30 views

My wireless dosenot work on rtl8723ae

I have Ubuntu 14.04 first time wireless work great after i update Ubuntu wireless did not work OS Release Distributor ID: Ubuntu Description: Ubuntu 14.04 LTS Release: 14.04 Codename: ...
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0answers
7 views

Share internet with samsung tab over Samsung Kies & Cable [duplicate]

Here is the problem: I need internet on my Samsung Galaxy Tab 3 to update Android, but Wifi doesn't work and my mobile data plan is not sufficient (1GB MAX). I want to "reverse tether." I don't have ...
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2answers
357 views

Virus infection in Ubuntu 14.04

I am using Ubuntu 14.04.My computer is infected by viruses or malicious software installed without my knowledge during web surfing. I am saying this because whenever I search anything in Google search ...
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2answers
33 views

Lubuntu 12.04, Sony Vaio VGN-T150, Intel PRO/set wireless (2200) wireless doesn't work

Just installed Lubuntu 12.04 on my Sony Vaio VGN-T150 after installing Win XP again; I had Lubuntu 12.04 on the laptop but wasn't getting any CPU fan operation. Tried adding vaiofand but still seemed ...
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2answers
21 views

While Installing the “Universe” Source I get the following error “Failed to download repository information”

this is my first time posting on AskUbuntu so forgive me if I make any mistakes in my post. About an hour ago I installed Ubuntu 14.04 64-bit, I went to the Ubuntu Software Center to install my ...
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0answers
17 views

Configure port forwarding from localhost:x to z.z.z.z:y without root

Our application needs to configure simple port forwarding on runtime. I'm talking about an iptables configurations like this: iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE iptables -A FORWARD ...
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2answers
20 views

Can't connect to one wifi network, keeps asking for password

Here's the relevant syslog stuff: http://pastie.org/9405812 Here's the output from the wireless-info script: http://paste.ubuntu.com/7821949/ My wifi works well in general, I only have problems with ...
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1answer
32 views

Trying to get wifi working in Lubuntu 14.04 on Inspiron B120

I'm having a hell of a time getting wifi working on this old laptop. Google turns up lots of people having similar problems, but all the answers seem to be from 2010 - 2011 and aren't working for me. ...
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0answers
13 views

Is it possible to Disable TCP Sequence Number Checking in Ubuntu?

I want to disable TCP Sequence number checking in Ubuntu. I suspect that Ubuntu is dropping packets as Wireshark shows that the Packets arrive out of order. Is there any such feature in Ubuntu or ...
1
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2answers
31 views

No connectivity from Broadcom 4322

While browsing the web I was notified that my Dell Vostro 1720 was offline. After no luck rebooting my D-Link Verizon WiFi router, I saw my laptop could not connect wirelessly to anything, even a USB ...
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0answers
9 views

Connect to a hub in LAN

How to connect to a hub (not public) with LinuxDC++. I wanted to connect to hubs in our campus LAN using their IP address. I typed their IP addresses in Preferences -> Connection -> Active (public IP ...
2
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1answer
63 views

Asus X550L Weak Wifi signal ubuntu 14.04

I'm new to Ubuntu OS. I've installed ubuntu 14.04 x64 on my ASUS X550LC laptop yesterday. The wifi signal is weak & getting disconnected sometimes. Searched all over the web but many site/forums ...
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0answers
10 views

Can't get DW1525 (802.11n) WLAN PCle Card working

I have a Ubuntu Server Cloud 14.04 LTS, and my wireless card is DW1525 (802.11n) WLAN PCle Card. My network is using WPA 1 as the encryption. I followed steps at post on the WPA part ...
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0answers
21 views

Ethernet works with Windows Vista Ultimate, but not in Ubuntu 14.04

When I installed ubuntu 14.04 my ethernet is not connecting. Anyone can help me , please ? NetworkManager Tool State: disconnected Device: eth0 Type: Wired Driver: r8169 State: unavailable Default: ...
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1answer
44 views

Can't connect to any Wi-Fi on Asus X550C in Ubuntu 14.04

I did a clean install of Ubuntu 14.04 the first and the only OS on my new laptop ASUS X550C and I cannot connect to any Wi-Fi, even toggling fn+f2 (keyboard default) doesn't swith/show Wi-Fi indicator ...
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0answers
14 views

How do I use my home (Ubuntu 12.04) internet connection as VPN at work (Windows 8.1)?

I need to access my home internet connection from work time to time. My work and home connections are in same network. As I stated in the question both computers use different operation systems (work ...
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0answers
15 views

I can not browse my Samba Network Share

I have a Ubuntu Server 12.4 LTS Server running samba. I have folder shared & can be accessible from windows WS. However. Recently I added another UBUNTU Server to the network(on VW Environment) ...
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1answer
25 views

Problem restarting the network service

Hello and thanks for reading this, I am working on network configuration, testing a few different approaches to see which one suits me best. I have installed a new instance of 14.04 server and I have ...
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1answer
25 views

Network manager ubuntu

I am using Ubuntu in Virtualbox and not able to setup network connection to host windows7 machine. its showing wired network disconnected. previously it was networkconnection1.
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22 views

How to keep Ubuntu 14.04 from asking me for wifi password all the time.

I have a Sony Vaio Flip 15 and Ubuntu 14.04 constantly asks me to confirm my wifi about every 10 minutes and it really gets in the way of doing some things. I found other users experiencing the same ...