Managing and using network connectivity on a Ubuntu system

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I can ping but can't browse

I have Xubuntu 14.04 with the latest update and having issues connecting to the university's network. I'm running xubuntu on my chromebook and the internet works at home but I just started school and ...
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16 views

Working with two internet connections

That's my server network setup: /etc/network/interfaces auto ethLAN iface ethLAN inet static address 192.168.10.3 netmask 255.255.255.0 network 192.168.10.0 broadcast 192.168.10.255 auto ethOI ...
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How do I find which OS layer (iptables, rp_filter, etc) is dropping a packet?

Let's say that I'm running a ping towards a machine and I see from tcpdump that the icmp echo reply is being received at the ethernet port but the ping program is not getting it. So I know that ...
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1answer
36 views

Ubuntu Server not reading /etc/network/interfaces

So after getting frustrated searching online and only ever coming up with posts about how to change EM1 to ETH0, I have come here to ask this question: What would cause Ubuntu Server to not load ...
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11 views

Which file specify active of ack?

Using mptcp kernel we like to realize multi-ack systeam. So we need to know which file is part of ack. Is there anyone who know that which file specify active of ack. Thanks to read this!
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20 views

How to get back a missing Network menu in Ubuntu14.04?

I am using Ubuntu14.04. Network menu in my global menu bar has disappeared.How do I get this menu item back? Results of running nm-applet nm-applet-Message: using fallback from indicator to ...
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10 views

How to compress syslog-ng's network link, now that zlib is disabled in openssl?

In our servers infrastructure, for logging, we use a client/server setup, using syslog-ng, and stunnel as a mean of compression at the network level, through zlib at the SSL layer (syslog-ng doesn't ...
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17 views

Ubuntu 14.04 and WIFI 6230

I've got a Intel NUC 54250WYKH with a Intel 6230 MINI PCI-express card and I've installed Xubuntu 14.04 64bit. I'm having trouble getting the wireless to connect to a known working access point (I've ...
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51 views

Ubuntu 14.01 LTS can't access some websites

Something is wrong with Ubuntu Kernel and Windows DHCP,DNS Server. First i will explain my problem in few words and then ill post all my configurations. My ubuntu computer is behind a all-in-one ...
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1answer
19 views

Networking OK during install but not after reboot

(note wired not wireless) I just put 14.04 server onto an old-ish dell box with a realtek ethernet card on eth1 (eth0 is dead). lspci reports it as RTL-8100/8101L/8139. I did a complete ...
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10 views

The router logon page shows when calling domain in a browser,

I am new to Linux server, but I wish to run one,so I got a newly built Ubuntu server with a domain transferred from Win 2003 server. It seems, on localhost all works well, but when calling the domain ...
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1answer
39 views

Ubuntu server 14.04.1 LTS wont install any packages after reboot

I just installed Ubuntu server 14.04.1 LTS on my old gaming pc to run a file server on. I got it all installed on the PC and was able to apt-get update and apt-get upgrade and install samba, ...
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23 views

Network Printer found and drivers installed, not printing from Ubuntu 14.04

I was able to find and connect to my Canon MG6320 printer from my Ubuntu 14.04 computer using the GUI. I clicked: System Settings>Printers>Add and everything worked fine until I tried to print a "Test ...
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16 views

Can not switch to another wifi connection

After reboot my computer connects to one of available wifi connections. When i try to switch to another wifi it can not connect. In top panel connecting animation is shown, then after 1 minute it says ...
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10 views

xubuntu 14.04 gsm modem connection dropping

I'm using XUBUNTU 14.04. My GSM modem (E3131) keeps dropping connection randomly in intervals from 10 minutes to an hour. Most of the time I just wait about 30 seconds until it is recognized by the ...
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13 views

problem with creating wifi Hotspot on ubuntu 13.10 [on hold]

At-first the Default Ad-hoc connection doesn't work out that’s why I tried installing ap-hotspot by using following commands on my terminal sudo add-apt-repository ...
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33 views

Connecting tata photon in X window manager using command line

Due to some reason i had to shift from Unity(not 2-d as i remember) to X window manager. So here on the desktop nothing appears (no launcher , no menu bar nothing) but we can open command line in it ...
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23 views

how to open ports in Ubuntu Server 12.4 LTS

How to open ports TCP 1723 / UDP 1701 / UDP GRE 46 on Ubuntu Server? Note: ufw is disabled in the server. sudo iptables -L -nv gives me the following result. Chain INPUT (policy ACCEPT 1613K ...
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16 views

My WAN connection disconnects automatically when LAN is connected [on hold]

I want to install Squid proxy server in Ubuntu 14.04 desktop with two network cards which connects my LAN with WAN.
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16 views

Does the desktop version have a limitation on TCP connection number?

We have a server application in JAVA, these days when the TCP connection number is more than 1000, I get the error message "too many open files", although I have increased the number of file ...
0
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1answer
70 views

Why is Ubuntu suddenly crippling my network?

I'm running Xubuntu 14.04 64-bit. I have recently started noticing randomly that my wireless adaptor suddenly becomes a jamming device for the network I'm connected to! I see 0Kbit/s in my network ...
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17 views

Networking - how to allow from second lan interface to access first lan interface? [duplicate]

I have one box with 2 ethernet interface: auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp auto eth1 iface eth1 inet static address 192.168.2.1 netmask 255.255.255.0 #network ...
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30 views

Lenovo g5030 not having any hardware switch for wifi or bluetooth after installing ubuntu 14.04

In rfkill it shows wifi is hard block and bluetooth is also hardblock. Bluetooth soft unlock is working but wifi soft unlock is not working. Bios wifi is enabled. Can any body help me fix this?
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24 views

Why are browsing samba shares from Ubuntu (Nautilus) so much slower than browsing from Windows

I have a samba share over the a vpn server. Browsing the share takes 60 times longer from Ubuntu than it takes from Windows. From a Windows 7 Virtual Box (and any other machine in the shop) it takes ...
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7 views

PXE boot issue (error 32) / tftp

Good day all I have some old laptops that I'd like to boot via LAN. First, because the drives on these are failing / have failed, and because they're now both over 14 years old, and then for the ...
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18 views

Internet connection failed

I tried several ways of connecting. I'm aware why I can't setup a wireless connection, but I can't get any drivers without Internet. The real problem is that even with cable I can't connect. Most ...
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1answer
25 views

Program that simply slows down a network?

Ok this may seem like an odd question, but I have my reasons.I am running Lubuntu on my laptop, and I wanted to ask whether there is a specific program or shell that I can run to just make constant ...
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28 views
+50

14.04 - Network Manager takes too much time reconnecting after resume/wake

I have an Intel wireless network card in my notebook. Whenever I resume/wake/unhibernate my computer it takes about a minute or so in order to be able to connect to the Internet again. It's just too ...
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0answers
14 views

Zero network traffic and no wake on LAN with Qualcomm Atheros QCA8171 Gigabit Ethernet

Up until recently, I was using Ubuntu 12.04. My Qualcomm Atheros QCA8171 Gigabit Ethernet network card seemed to be working fine: network traffic and wake on LAN both worked. I just installed Ubuntu ...
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11 views

Why does my MTS Mblaze data card keep disconnecting in ubuntu14.04 from time to time?? Plz help me solve this problem

I am a newbie to linux. I use ubuntu 14.04. I also use mts mblaze data card to access the internet. My data card gets recognised very well by ubuntu and i get to connect to the internet hassle free. ...
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6 views

Cannot access hotspot internet, after intstalling data card

I have been using iphone hotspot very long time and it was working fine. recently I started using Airtel data card 3G, after lot of going through tutorials and instructions i was able to install it ...
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1answer
12 views

softether VPN access list not working

I installed softether as VPN server on UBUNTU 12.4. nOW I add anonymous user for special range of ips. as you see blow i created a user named 'all' : and i created an access list to deny access ...
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1answer
26 views

Very slow Internet speed due to proxy

I have just installed Ubuntu and I am totally a noob. My proxy was 172.31.1.4:8080 and i added these settings to run the internet mozilla get the normal speed but when i try to download anything from ...
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26 views

reset network@ubuntu 14.04

Hi I've been trying to setup mobile hotspot in my laptop (ubuntu14.04) so I go ahead with "How to setup an Access Point mode Wi-Fi Hotspot?" after changing the files listed in the file I'm unable to ...
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7 views

ssh tunneling to Fritz!Box via RaspberryPi

I have a Fritz!Box that acts as NAS, DHCP and internet gateway. The webinterface of the Fritz!Box is only accessible from the LAN (I'd like to keep it that way, although it could be changed). Can I ...
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20 views

DSL cable NOT detecting on network settings

I have installed Ubuntu 14.04 (dual boot ) without plugging in my internet cable and when I did plug it in to configure my PPPoe connection, it says wired connection unplugged in network settings. I ...
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14 views

Slow network and file copy performance

I'm experiencing a weird problem with my Kubuntu installation. I'm running 14.4 now that was upgraded at least twice using the built-in distribution upgrade. The problems started after the last ...
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2 views

redirect mssql traffic via Ubuntu

I'm trying to redirect a Microsoft SQL connection from local LAN to VPN via Ubuntu The Ubuntu has connection to both networks I want to be able to connect SQL from my PC to the Ubuntu and it redirects ...
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1answer
23 views

Ubuntu 14.04 32/64 bits no usb mouse keyboard no network waiting for network configuration

i am used ubuntu and now i am reinstalled 14.04 64 and no mouse or keyboard or network i am use rescue console from install cd to gather this hw info my network card is qualcomm atheros AR8161 ...
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1answer
24 views

Can't ping Arch Linux machine from Ubuntu Server

I have a server and a desktop. Server: OS: Ubuntu Server 14.04.1 IP address: DHCP from Asus router, allocated by MAC address to 192.168.1.4 Connection: wired Ethernet, always on Desktop: OS: ...
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19 views

How do I create a DHCP server, with a router that doesn't allow me to disable DHCP?

I have an Actiontec V1000H Modem/Router from my ISP Telus, they have blocked access to all their 'advanced' settings like DHCP/Bridging. I have setup a MAAS server I have a few things I'd like it to ...
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8 views

Wirelessly Connecting a Laptop Running Kali Linux with a Pc With Ubuntu

I Have a Pc with Ubuntu 14.04 Installed and a Laptop with Kali Linux 1.0.6 . I have a Router and the pc is connected to the router via a ethernet cable and the laptop is connected to the network ...
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18 views

Network icon is not visible in my taskbar

I am using Ubuntu 14.04. Always, if I could start the system, the network icon will be showing in a taskbar, but suddenly my network icon is not showing in the taskbar. Please tell me how I can get it ...
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23 views

Wifi not working for time warner cable modem

Hi I just subscribed for Time Warner cable internet . They gave me a UBEE DW335 Cable modem . I have ubuntu 14.04 installed and the wifi does not connect only on this particular time warner network . ...
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7 views

mounting WD mybook as network share

how do i mount a mybook 2TB drive so it can be accessed from my network? machine is HP SFF W/ AMD Athalon II x2 B24 proc.,4GB ram,KDE4.13 kernal 3.13.0-35 , 32 bit
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16 views

How to start openvpn on boot?

I am running Ubuntu Desktop 14.04 x64. I have openvpn installed and a client.conf file in /etc/openvpn. However, openvpn doesn't start on boot. I would try editing /etc/default/openvpn to make it ...
0
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1answer
25 views

Hostname keeps being reverted

I'm struggling with a strange problem on a Ubuntu 14.04.1 LTS VM running on Azure. My hostname keeps getting reverted to something related to my Azure Deployment. In short: the system hostname does ...
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9 views

Setting up a Tracker with Opentracker

I'm trying to run my tracker for the first time. I'd followed the instructions on (https://erdgeist.org/arts/software/opentracker/) and when I run ./opentracker it seems to be working (no error or ...
0
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1answer
26 views

Sharing folders in NTFS partitions in a network with SMB

I have a computer on my office with Ubuntu 14.04 and a laptop with the same configuration. I would like to share a folder I have in the office computer inside the network. I went to this folder and ...
2
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1answer
35 views

Configuring two internet connections

First, I'm know there's lots of topics about this kind of problem but I can't found a solution to my specific problem. In my setup I have a Linux server with three interfaces: ethLAN for LAN with IP ...