Managing and using network connectivity on a Ubuntu system

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configure GRE tunnel to start on reboot?

i'm trying to configure GRE tunnel (between 2 VBOX ubuntu server 12.04 LTS on win 7 host) but it keep failed. can anyone help?????? the configuration in /etc/network/interfaces VBOX A ip address ...
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0answers
67 views

Ubuntu 12.10 wireless reports it is working, but actually doesnt

I have Ubuntu 12.10 installed with windows 7 on a partitioned hard drive in a new gateway tower. My wireless card is made by realtek. The install went fine, I was able to connect to wireless to ...
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4answers
5k views

Why does my internet speed roughly *double* when switching from Ubuntu to Win XP?

From the same Ethernet-socket from the same machine (IBM Thinkpad X41) I get > 40 Mbps from Win XP ~ 18 Mbps from Ubuntu Apart from the fact that I'm officially paying for 50 Mbps and that for ...
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2answers
8k views

After starting a particular LXC container with a static IP, no default gateway route is configured

I've got one LXC container that works just fine, but a 2nd one now is mis-behaving. I've configured a static route for it, but it just won't define a gateway after sudo services networking restart or ...
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1answer
3k views

Connecting to AES encrypted wireless network

Trying to connect my laptop to my university network which uses WPA2 Enterprise and AES encryption, however the wireless connection doesn't have AES encryption option. I can't get it connected at all, ...
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1answer
119 views

Wireless and network icon dissapeared [duplicate]

After removing Network Manager and installing Wicd so it would work with my eth0 and wlan0 cards the section regarding networks (wireless and wired) from the top - right side of Ubuntu screen ...
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3answers
101 views

Why are there 2 routes in this table instead of one?

route -n gives: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.20.254 0.0.0.0 UG 0 0 0 eth0 ...
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1answer
85 views

Is there a network switch's brand which is more linux friendly than others?

So basically I'm looking to set up a LAN of 3 to 8 PC (all running with ubuntu). The goal is to transfer lots of data between them. I intended to buy a network switch and connect all the machines to ...
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2answers
3k views

Streaming music to Marantz M-CR603

Our stereo installation supports, according to the box, streaming over AirPlay (although the normal RAOP stuff doesn't seem to work on it. I think it's something called Airport Express), DLNA and ...
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2answers
2k views

How can I open port 22 for Sparkleshare?

How can I open port 22 for Sparkleshare? Every time I run dazzle create name_of_the_project (Sparkleshare) it gives the address but does no show the port as it should be. Example: it shows: ...
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0answers
199 views

Limited network transfer speeds

I'm running ubuntu Server 12.10 I have apache installed on both the ubuntu server and a virtualbox windows server running on the ubuntu as a guest. However When I download files from my webserver the ...
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0answers
533 views

12.04 - Extra default route breaks internet

Ubuntu 12.04 Desktop with wired network connection, eth0 and eth1 bonded and bridged. After reboot ping ubuntu.com fails ping 8.8.8.8 fails access to web server by noip domain name fails access to ...
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2answers
555 views

VPN for university

Just wondering how to get VPN working on Ubuntu 12.10 for my University because the instructions aren't very good for Linux (as usual). They have a file which I can open with gedit that contains the ...
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0answers
529 views

wlan0 gets an IP, but can't access the internet (or ping the router)

I'm using Ubuntu 12.10. I can access the internet without problem at work via wi-fi, and I used to do that at home, but my internet provider changed my modem (which now has a native router) and things ...
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1answer
3k views

Webmin Port Forwarding

I have not been able to figure this out at all. I have 1 Lan IP address and 5 external static IPs: eth0: 10.0.0.1 - internal lan ip and router IP. eth1: xx.xx.xx.217 - external eth2: xx.xx.xx.218 - ...
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1answer
4k views

Trouble Installing 12.10 on a GA-990FXA-UD3 Base Machine: Network and USB Don't Work

I've spent two days pulling my hair out trying to get Ubuntu to install correctly on a new machine I built using a Gigabyte GA-990FXA-UD3 motherboard. Ubuntu seems to install fine, however, neither ...
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1answer
642 views

Downloads kill WiFi

Just installed 12.10 fresh. Using a run-of-the-mill Netgear N router, and a Netgear WN111v2 USB dongle. THE PROBLEM: I attempt to install anything using update manager, software center, or via ...
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1answer
408 views

Configure a domain alias

How do i configure a domain alias in ubuntu? I have a server called example.com which has a git running on port 4321 Port 4321 is not visible to the outside world. So from machine1 I use ssh to ...
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1answer
890 views

How do I get a Rosewill USB wireless adapter RNX-N180UBE working?

Need a how to install for Rosewill USB wireless adapter RNX-N180UBE. Dell laptop using Ubuntu 12.04. Rosewill USB wireless adapter RNX-N180UBE. lsusb shows as: obda:8172 and Realtek Corp RTL8191SU ...
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1answer
1k views

How to access the internet from a virtual machine in Gnome Boxes?

I installed Gnome Boxes, created a new virtual machine and booted an ISO. The ISO boots up fine and the network inside the virtual machine got automatically configured by the distro (with dhcpd): IP ...
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1answer
680 views

Only loopback in /etc/network/interfaces - But internet works?

I just looked in /etc/network/interfaces, for the sake of learning Ubuntu better than before. What I'm wondering is. Why does it look like this: # interfaces(5) file used by ifup(8) and ifdown(8) ...
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2answers
3k views

VirtualBox client OS (using NAT) is able to access host's LAN - How come?

My network is somewhat simple: all PCs in my LAN (Ubuntu desktop, Win7 desktop, XP netbook) connected to a dlink home router, which is connected to ISP's cable modem. LAN has IP subnet 10.10.10.0/24, ...
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2answers
841 views

Crossover connection between two Ubuntu PCs using samba very slow

I got a Cat5e crossover cable to exchange files between my PC and Notebook real quick but the transfer rate is 1.3 MBs. Using USB 2.0 I'm soo much faster putting files on my external HDD. This can't ...
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1answer
525 views

Have set up a file server. How to make it accessible from anywhere? [duplicate]

I have installed xubuntu and made it a file server in my college using this guide. How to build your own file server Okay I am pretty new to these things, but I want to know a few things? 1) I ...
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2answers
721 views

My wireless adapter is “Hard blocked” - WN2001 on an ASRock AMD E350M1/USB3

My wireless adapter is hard-blocked and i do not know how to fix it. I have tried the following: sudo rfkill unblock all sudo rmmod rtl8192cu && sudo modprobe rtl8192cu sudo rm /dev/rfkill ...
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1answer
6k views

How do I get a StarTech USB 3.0 to Gigabit Ethernet Adapter working?

I bought a Startech USB 3.0 to Gigabit Ethernet Adapter and looking for linux drivers. I did google search and did not come up with anything. Startech.com has only windows drivers. Any help on ...
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1answer
1k views

how to setup user accounts on large network

I am migrating a set of 20 computers to Ubuntu and will be having only this OS. The previous OS needs to be discarded along with all its associated headaches and dependencies. I have so far managed to ...
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0answers
2k views

How do I install a Livebox USB printer as network printer?

I hope someone has figured this out because I've spent days with google trying to track down the solution. I got fed up with microsoft Win XP and 7 and decided to try ubuntu 12.04 on a spare laptop ...
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1answer
807 views

Ubuntu Won't Connect to Ethernet Network that doesn't provide internet access

When I try to connect to a network with an ethernet cable into my computer, and the network won't provide internet access (It isn't supposed to provide internet access, only local access), Ubuntu will ...
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2answers
2k views

How can I cancel all the current communication from particular IP in Ubuntu 12.04?

I am working on Ubuntu 12.04 firewall. I want to deny any IP on runtime. I am using "ufw deny from IP". It's working for future connections. But it is not cancelling the existing connections like ssh. ...
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1answer
469 views

Forward [open] Ports 7777; 2106

Hi i am new to Ubuntu (12.10) x64 Trying to forward ports for gameserver on my pc (Lineage II) Ports are opened in UFW Ports are opened in my Router Even if i disable UFW others still cant login to ...
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1answer
134 views

Need help troubleshooting Apache inside VM

I'm hitting a wall troubleshooting this. I feel the problem is either due to my lack of networking skills, or a basic knowledge of configuring Apache. I'm hoping I can shed some light on my setup by ...
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2answers
458 views

Identify “rogue” internet accessing Applications

At the moment I have an application/service/widget/plugin/cronjob whatever, accessing the internet on a regular basis. I could go into the details of my specific issue but I'd rather have an answer ...
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1answer
844 views

How can I prevent the hacking of my wired and wireless networks by tools like feedingbottle? [closed]

I am network administrator and I am always worried about network security as I know people use different techniques of hacking to penetrate wireless and wired networks. Recently I came to about ...
28
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3answers
16k views

connecting to archive.ubuntu.com takes too long

I have a Ubuntu 11.10 server that I just installed fresh. Now if I try to do anything with apt-get, it tries to connect to archive.ubuntu.com .. It stays at [Connecting to archive.ubuntu.com ...
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2answers
935 views

Network doesn't work on Ubuntu

I've migrated physical Ubuntu to Hyper-V 2012 with Acronis Universal Restore. It worked fine for a while till i rebooted machine. After reboot the network does come up: But any ping or anything ...
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1answer
767 views

How to establish VPN Connection using Vodafone K3773 HSPA USB Stick?

I am using Ubuntu 12.04 Desktop. I am trying to establish VPN PPTP connection to Ubuntu 12.04 Server. VPN connection available when PC is connected to LAN -> ADSL modem -> Internet -> VPN Server. No ...
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1answer
331 views

How to trace the IP of a hacker who always steals the Mac address of my computer? [closed]

I am using the edu net in my university. However it often occures that someone always steal the Mac adress of my computer to cheat the server so that he can use the network service without paying for ...
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0answers
417 views

How to get HAVP(HTTP Anti Virus Proxy) working?

I have a Ubuntu 12.04 server with HAVP(HTTP Anti Virus Proxy) with ClamAV and AVG. My dhcp server is a OpenBSD 5.2 router. If I connect manually to my Ubuntu server its works great, but when I'm ...
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1answer
175 views

How do I boot Ubuntu from the network?

Is there an easy way to boot ubuntu from network a.k.a. PXE? I would like to setup a PXE server, connect an old laptop (without cdrom nor working usb-boot-option) to the network and boot Ubuntu ...
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2answers
2k views

problems maintaining interent connection with static IP

I have been attempting to set up Ubuntu 12.04 with a static IP (with information provided by my university) as well as the local cycling IP on a workstation with two ethernet ports. However, I've had ...
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3answers
7k views

How to get your network ip

I am on a network with PPPoE connection for internet acces.I want to find out my network ipv4. Example: -on Windows 7 I can see both my PPPoE's connection ip and local network ip, either from ...
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1answer
206 views

Using both wired and wireless ubuntu 12.10 no bonding

i've got an PC running ubuntu 12.10. i have 2 connection: a wired connect to the internet through router A, and the wireless connection to the internet through router B. Now i have try to search the ...
0
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1answer
930 views

Ubuntu 12.10 network settings UI grayed out

I am running a pretty much stock install of 12.10. All the UI for network settings is grayed out, like if I right click from the top right bar icon or go to System Settings -> Network -> Options (all ...
3
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1answer
515 views

How do I force applications to use different internet connections? [duplicate]

I have two data connections. One is a USB Dongle with a high speed, limited data plan. The other is a broadband (over WiFi) slower, but unlimited data plan, connection. I want certain applications ...
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1answer
2k views

How to make Realtek 8723 recognize the network?

I have a Toshiba Satellite S855-S5378, and the wireless card doesn't work in Ubuntu 12.10 64-bit. This is my kernel: Linux 3.5.0-26-generic #42-Ubuntu SMP Fri Mar 8 23:18:20 UTC 2013 x86_64 x86_64 ...
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2answers
704 views

linux machine not visible to pc or macs at home [duplicate]

Setup Linux 12.10 machine from scratch, it can connect to the internet no problem. However I cannot see the linux machine from my PC or mac, is there something else I need to do ?
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1answer
664 views

12.04.2 LTS Server failure during installation during “Detecting Network Hardware…”

I've got an older PC,inherited from my father, who had it running WinXP successfully. I've tried unsuccessfully for 2 days to install Ubuntu Server v 12.04.2 LTS as a replacement (ie, NO dual-boot) ...
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1answer
113 views

how to sniff MMS urls from a lot of HTTP links

I have a text file that contains the HTTP urls for certain mp3 audio. If I copy and paste the link to browser, the browser is going to return me a MMS link that I can use to download the streaming ...
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0answers
350 views

DHCP can not obtain correct IP sometimes

I installed Ubuntu lucid on my Thinkpad x201i laptop.Recently I found it that when I connect my cable to my laptop in our school's library,my DHCP client can not obtain correct IP. I have to set it ...