Managing and using network connectivity on a Ubuntu system

learn more… | top users | synonyms (1)

0
votes
1answer
5 views

Ubuntu 14.04 Juniper network-connect crashes right after starting

My juniper network-connect tool crashes just after launching. It used to work until last week and has suddenly stopped working (probably due to recent update). $ ...
0
votes
0answers
3 views

open vpn gone after command in Private Tunnel faq

i was making new connection with openvpn by documents on privatetunnel.com and at the end of docs i enter this command in terminal and after that openvpn in broken. i remove open vpn with apt-get ...
0
votes
2answers
9 views

Add Static route to Ubuntu on a Digital Ocean VPS

I am trying to add a static route to a remote subnet from a digital ocean vps (ubuntu 14.08) but everytime i run the following command I get the error: "RTNETLINK answers: Network is unreachable" ...
0
votes
0answers
10 views

System Wide VPN?

I am using Earth VPN. Already Connected to VPN. Probleem: Unable to use steam.It says no network. Network uses proxy. UDP port is blocked. In windows when I get connected to VPN through ...
0
votes
0answers
10 views

Networking problem with USB wi-fi RTL8188EU

I have a power-line carrier connection that drops from time to time and taking a minute to reconnect. Thus I want to use a USB wi-fi as a backup. The driver it uses is RTL8188EU and since that ...
0
votes
0answers
21 views

WiFi stopped working after updates 14.04 LTS

First, my bluetooth was not working so I tried the solution suggested here but still devices are not able to pair. Then after this, my WiFi has stopped working. ########## wireless info START ...
0
votes
2answers
16 views

How to provide a network address to a DSL connection in Ubuntu?

I'm a new Ubuntu user(Desktop OS). As I've switched from Windows 10 to Ubuntu 12.4 just before few days. I'm unable to set up a DSL connection in Ubuntu as I can't find any option to provide a ...
0
votes
0answers
18 views

Ubuntu 14.04, /etc/hosts file entries not working and referring to wrong ip

I am on Ubuntu 14.04 LTS, I have added few host machines to the file /etc/hosts as below: 192.168.2.12 machine1 192.168.2.13 machine2 192.168.2.14 machine3 These machines are in the same network ...
0
votes
0answers
7 views

Ubuntu 14.04 LTS Keeps disconnecting (Wifi)

I have a problem of where every once in a while Ubuntu seems to disconnect from my wifi Network. Then when I click to reconnect it just stalls and never does. I've tried the solution posted here, but ...
1
vote
2answers
30 views

No ethernet on Ubuntu 14.04 LTS

My ethernet has stopped working, leaving me with wireless only: This seems to be a common problem but I have yet to find a fix. Standard diagnostics $ ifconfig -a eth0 Link encap:Ethernet ...
0
votes
2answers
16 views

Ubuntu 15.04 with win xp on virtualbox

i'm using Ubuntu 15.10 64 bit and windows xp in virtual box. The virtualization start but in windows xp there is no connection. In ubuntu i'm using the ethernet connection from Vodafone Station. The ...
0
votes
0answers
15 views

Qualcomm Atheros AR8161 - Ethernet connection doesn't work

Today I launched Ubuntu 15.10 from bootable pendrive and tried to connect to the Internet using wired connection - it doesn't work (same on Ubuntu 14.04). Wireless connection is fine. I've tried a lot ...
0
votes
1answer
18 views

How do I substitute network addresses? [duplicate]

Right now I have a network server that I frequently have to SSH into. Instead of typing: ssh fox@192.168.2.24 I want to be able to say: ssh fox@srv And that it would SSH into the server at ...
-1
votes
0answers
15 views

Is possible to load remote desktop raspberry via server?

my server has public ip and on router is configured redirecting all packets to my server. Is there any way to connect to raspberry pi (which is in same network, also connected via ethernet) remote ...
1
vote
0answers
25 views

Network is not connected

After updating some data my system is not shown the Wifi option any more and it does not detect the network if I insert the wired cable. I already tried these attempts: ...
0
votes
1answer
26 views

wifi connection keeps dropping in Ubuntu 15.10 - RTL8821AE

I recently purchased a lenovo ideapad300 and installed a dual boot system. the wifi for windows 10 works seamlessly while its problematic in ubuntu this is the output for lspci -knn | grep Net -A2 ...
0
votes
1answer
23 views

Ubuntu as a router for Video conference purpose

my setup: Ubuntu 12.04 eth0 192.168.10.17 eth1 10.10.1.27 video conference mcu 192.168.10.52 configuration done: net.ipv4.ip_forward=1 oot@its-PRODiiGY-G31:~# ...
0
votes
0answers
15 views

Ubuntu server 14.04.03 LTS -32bit problem with apt-get update

Hi my ubuntu server has problem to install packages and use the command sudo apt-get update Every site it tries to connect to I got a fail. But the server is connected to the network and I have a ...
0
votes
0answers
14 views

edX.org login issue with Chrome on Ubuntu 15.10

I am using Ubuntu 15.10 with latest version of Google Chrome. But Signin on edX.org does not work, after clicking "Sign in", it shows We couldn't sign you in. An error has occurred. Check your ...
0
votes
0answers
8 views

Recover Server from recovery mode(firewall closes ports)

My server( Ubuntu 14.04 - Plesk - RAID1 ) is now in normal mode. Almost all ports disabled by firewall as plesk port 8443, so plesk login panel is not opening. Also Website is not opening. ...
0
votes
0answers
12 views

managing an LTSP Edubuntu server with thin clients

Hello there I am hoping some one can help me. I have set-up and Edubuntu LTSP server in my schools IT room which is working fine as it should, but I wish to be able to turn the server login screen to ...
1
vote
0answers
23 views

Wireless Authentication through Website

Our WiFi network at our university requires you to go to a website and enter a username and password to authenticate. When I try to connect to the WiFi network I get the "Wi-Fi Network Authentication ...
0
votes
0answers
14 views

Cannot Ping Outside from Guest throught host

I set up 2 virtual machine with the following IP: 1) IP: 192.168.20.50 SM: 255.255.255.0 Gateway: 192.168.20.100---Connection type=Bridged; 2) IP: 192.168.20.100 SM: 255.255.255.0 ---Connection ...
-7
votes
1answer
40 views

How do I secure my Ubuntu? [on hold]

I am not pleased with the Ubuntu operating system. I was told by many "gurus" that Linux across the board was completely secure. Since I installed Ubuntu, which as an OS is great, I have set up ...
0
votes
0answers
10 views

Using two different internet connections (no load balancing)

is there an easy way to set up two different internet connections on a server? I have a Cubieboard 4 running Linaro's Ubuntu Server Port. It was installed and configured using only it's ethernet port. ...
0
votes
1answer
13 views

Is it possible to define a fallback gateway server?

I'm using iptables to implement forwarding on one server, that is support to forward traffic from an internal network to the internet (tutorial: http://www.revsys.com/writings/quicktips/nat.html) On ...
0
votes
0answers
23 views

How does software autodiscover devices connected to a NIC?

I have an Allied Vision camera and I'm able to connect it to my ethernet port on my computer and their software is able to find it. How do they do that? The reason I ask is because I have a computer ...
1
vote
2answers
35 views

Need help figuring out why I can't putty to my 14.04 server

I have just installed 14.04 LTS server for i386. I am new to Ubuntu. The installation went good. I am able to login. I ran ifconfig and it returned an IP of 192.168.254.19. I started Putty on a Win7 ...
0
votes
1answer
66 views

Wireless Internet not working Acer Aspire R5

I'm so new to Linux that it should be illegal for me to post on this forum. I bought this Acer Aspire a few months. It came with Windows 10. I obtained a virus after I removed my anti-virus soft ...
0
votes
0answers
12 views

WiFi works only after reinsatll

I am facing a strange connectivity problem. WiFi gets connected on my Ubuntu 14.04 but there is no internet. All other devices can connect to the same network. I reinstalled the Ubuntu desktop and ...
-1
votes
0answers
17 views

copy network setings from live usb

Live usb works fine on my pc. My regular ubuntu 14.04 installation suddenly lost network connections. I do not see the two arrows at the top right. eth2 does not appear in ifconfig. Instead of ...
0
votes
0answers
14 views

Server gets overloaded with rsync and stops taking connections

I have a backup server in AWS where I rsync data from 20 servers hourly, so it has a hefty task. For the most part it works fine but then every few hours it locks down and stops accepting ...
0
votes
0answers
21 views

apt-get update failure, unable to connect proxy addess

I have a dual boot (Windows 7 professional+ Ubuntu server 14.04) Dell Precision Tower 7810. The machine is connected to proxy server (http://192.168.128.1:8080) via LAN (static IP). My machine is ...
-1
votes
0answers
24 views

Xubuntu 15.10 - WiFi working but not Ethernet [duplicate]

I upgraded from Xub 14.04 LTS to 15.10. The ethernet in 14.04 used to work, albeit slower than the Windows 10 installation on the other partition, but now it just doesn't work on the Xubuntu side. The ...
-2
votes
0answers
21 views

Skype does not see online internet ( Skype can't connect ) [duplicate]

At the moment, there are two established programs at OC 1 - Chorme, 2 - Skype.Tried to install Skype in different ways, through the terminal, Software Center, deb package, but all to no avail ...
0
votes
1answer
15 views

Use USB port of raspi from ubuntu 15.10

I am trying to export a USB port over IP from raspi and use it on ubuntu. On the raspberry pi I can start the daemon using > sudo usbipd usbipd: info: starting usbipd (usbip-utils 2.0) usbipd: ...
1
vote
1answer
29 views

Multiple connections per ip

I am running Ubuntu with a webserver (Nginx). I noticed that one IP has multiple connections opened. My server works all fine and there is no issue. I am just curious to know why there are many ...
0
votes
0answers
22 views

Traffic control using TC/IPtables mangle [on hold]

I want to control TCP Packets/KBits and/or Kbps traffic coming to port 7171 per minute. I am a new Linux user, I host a game-server on Ubuntu 14.04 Can someone help me, please? I have been looking for ...
0
votes
0answers
21 views

Can't access internet through wi-fi after some time connected [duplicate]

My problem is similar to this one but my wireless connection doesn't straight out disconnect. It appears to be ok looking at the wi-fi symbol at the upper right corner but after some time I can't ...
0
votes
1answer
31 views

How can I get eth0 interface

I try to get MATLAB running in Kubutu but there seems to be a problem with the network interfaces. MATLAB support told me that there must be an interface called "eth0" but I have only an interface ...
0
votes
0answers
13 views

VPS IP address for local site

I have no experience in about Apache and want to set up Apache Virtual Hosts on Ubuntu 14.04 LTS for a local site on my local machine. I followed this page. But when I try to test http://example.com I ...
-1
votes
0answers
24 views

Not able to connect with wifi .Wireless network problem

I recently bought my Ubuntu laptop . I am not able to connect with my wireless modem .any suggestion will be help full It is showing connected from terminal(using some basic network command like ...
0
votes
0answers
29 views

When lid is closed, no internent connection

new to linux and ubuntu so please show some understanding :) im using an external monitor with my laptop, and when i close the lid (already set up the power management so nothingks will happen when i ...
0
votes
0answers
21 views

TCP/UDP Packets Ubuntu 14.04

I am hosting a game-server on ubuntu 14.04 Can I control the UDP/TCP Packets per minute/second on port 7171? Players use a lot of packets to lag/crash my game-server and when it reach the maximum ...
0
votes
1answer
16 views

bridge and LXC container on two cloud server

I have problem with the configuration of bridge and lxc container on cloud server. I Have two cloud servers. On each cloud I've created bridge by brctl like: brctl addbr $bridge ip addr add ...
0
votes
0answers
28 views

No network connections after update

Installed the requisite updates yesterday and my wifi disappeared competely. No icon in the top right, and nothing under settings and network. Is there a fix? If not, is there a way to revert to the ...
0
votes
0answers
18 views

Unable to create hotspot in ubuntu 15.04

My laptop is having Broadcom BCM43142. I used KDE connection editor for adding info like ssid, password and other hotspot related stuff. But now when I try to start the hotspot by using create new ...
0
votes
0answers
10 views

Wifi indicator in status line missing [duplicate]

I use Ubuntu 14.04 for quite some time now, and suddenly my Wifi Indicator in the upper status bar is missing. It disappeared by itself. I searched for solutions and tried these two: 1)sudo service ...
2
votes
0answers
21 views

Diskless Problem Network

I'm new on the askubuntu.com and I want to expose my problem. I'm sorry for my poor english. I have a big project to implement a big cluster calculations. I'm stuck at a part, let me explain. The ...
0
votes
0answers
8 views

Restricting the Number of IP/TCP Connection Request Per Second Using Ubuntu Sever

I know what type internet connection my machines have and how much CPU/RAM they are using. So Is it possible to restrict the accepting number of IP/TCP connections per second at the OS level, before ...