Managing and using network connectivity on a Ubuntu system

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dhcpserver configuration, please help

I hope I will get help here. I need to configure an Ubuntu dhcp server (12.10), the server has 2 network cards. What I need to do is to configure the server as DHCP to give clients IP-Addresses ...
-1
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1answer
165 views

Virtualmin DNS problems

i'm pretty new to Ubuntu and Virtualmin and I got a problem. I'm creating a webserver with virtualmin local use only (it's running on virtualbox) so the ip is 10.0.2.15 and I'm trying to make the DNS ...
0
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2answers
334 views

Wireless network card is dectected but not working

I installed Ubuntu 12.04 LTS in my HP laptop. My wireless card is not working. But, I could see wireless controller in lspci and lshw -C network. Here, I have enclosed the output. Whether should i ...
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0answers
696 views

Enable access from my Public IP instead of localhost via Apache 2.4

I have Ubuntu 14.04 , apache 2.4.7 $ apache2 -v Server version: Apache/2.4.7 (Ubuntu) Server built: Apr 3 2014 12:20:28 I made many attempts to access from my public IP Firstly , i enable ...
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2answers
72 views

How do I name my system?

I want to name my system that when anyone list all the connected pc in local network then my pc ip and name will be display there. I am using **sudo arp-scan --interface=eth0 --localnet ** this ...
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1answer
1k views

How to Access Web Server From Inside/Outside Network

I've installed Ubuntu on my web server. I'm able to access the web server from my home using the ip address. I'm also able to access it outside my home network using a domain that I purchased. The ...
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1answer
6k views

Ubuntu 14.04 failed to detect USB modem [MTS Mblaze] after system update

My fresh Ubuntu 14.04 box was able to detect an USB modem and successfully connected to internet, though I found connection is sometime shaky. But the joy lasted only few days. Now, If I remember ...
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1answer
235 views

How to allow everyone on SMB (Samba) to edit

So I set up a server on my home network using Samba, I use a Linux computer running Ubuntu 12.04 LTS. However I want to connect to the server on a MAC. I can find the file fine however when I drop a ...
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1answer
632 views

cannot find “Enable Wireless” option in Ubuntu 12.04 network drop down

Historically, there is an "Enable Wireless" option that I can have ticked or unticked that is just beneath the "Enable Networking" option when I right click on the network bar. Suddenly this ...
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0answers
379 views

Can webmin create a network interface bond for ubuntu 12.04?

I just picked up Webmin today after being fed up with using the command line for 6 months for my server running Ubuntu 12.04. I have liked it so far and have fixed many problems I had before. I have ...
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2answers
1k views

Just installed 14.04 in place of XP, no Wireless connections showing in Network manager

I just upgraded my Samsung NC10 netbook with Broadcom BCM 3411 WLAN to 14.04. I'm not seeing any wireless connection choice under Network Manager, but it connects just fine on ethernet. Ubuntu ...
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2answers
622 views

VNC Mac to Ubuntu on Trusted Network

I am only interested in getting into my system on my LAN. I've got my firewall set up so that it blocks incoming packets that are not from the LAN. I can SSH into my Ubuntu machine but I can't VNC ...
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1answer
100 views

How to block ips similar to editing the HOSTS file on windows

I have recently switched to Ubuntu and need to block a few Ips for gaming. Previously, I could simply add a line to the File in C:\Windows\System32\Drivers\etc\HOSTS but I am unsure how to do this on ...
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1answer
78 views

Shell script backup routers

Below is a script I've wrote to backup my routers and adsl modem, Any ideas to compact this script in less lines? Each router have a different kind of structure as you can see. #!/bin/sh ...
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0answers
109 views

Dynamically Enable LAN traffic in Firewalld (using profiles in network-manager)

I am trying to use firewalld to allow dynamic profiles for different connections in Network Manager. When I'm at home, however, I would like to allow anything coming in on the LAN (local subnet). I ...
2
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0answers
148 views

Ubuntu server periodically unreachable

I have an Ubuntu Server 14.04 server running. The server has two NICs and acts as a NAT router, with the help of shorewall. Shorewall also acts as a plain firewall for blocking ports that I don't want ...
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1answer
225 views

How to block ip forwarding for specific remote ip address

I use ubuntu as gateway for several hosts. I need advise how to block ip forwarding for specific ip address or specific ip range? I tried to block ip via ufw deny rules, but it looks like ip ...
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3answers
5k views

IPv6 does not work over bridge

I installed Ubuntu 14.04 server a week ago. I use it as a virtual machine host (tasksel installed). meaning am running it with kvm + libvirt. I have set up the same bridge I had in 13.10. auto p4p1 ...
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1answer
5k views

Trouble using ssh and Avahi

Solved: make sure that libnss-mdns is installed! I'm having trouble using SSH'ing from my netbook to my desktop using a .local hostname. Every so often, I have to reset the router I use, which resets ...
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1answer
20k views

ifconfig does not recognize eth0, only wlan0 and lo (Ubuntu 14.04, Macbrook Pro) [duplicate]

ifconfig -a produces: lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 ...
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2answers
28k views

Unable to set static IP address in Ubuntu 14.04 [closed]

I've never had so much problems setting a network interface card to static addressing. I'm not sure what has changed, but I can only seem to get this thing to work if it's set to obtain the address ...
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0answers
94 views

ndiswrapper locks system when disconnecting from wifi network

After some hours of fiddling with ndiswrapper I have successfully managed to connect to my wireless network with my network card which sports a Realtek RTL8190 chipset. I'm using Ubuntu 14.04 and the ...
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1answer
1k views

How can i connect to wlan with my BCM4313 (14e4:4727)?

i am looking for help for getting my Broadcom Wlan card working on my laptop with Ubuntu. Until now i was not able to get it to work. Solutions i tried for now: 1. using the additional driver that ...
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1answer
84 views

iptables ruleset blocking all network activity?

I've gone through numerous trial and error to recently discover that my iptables result is the culprit of blocking all LAN and WAN activity. I know this, because if I comment out the last line in my ...
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0answers
357 views

iptables ruleset blocking LAN and WAN

Having problems with your Intel I217-V ethernet port? I suggest you read this entire post. Whilst drivers were not my issue, nor my answer (in the end), this post will still provide useful insight. ...
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0answers
959 views

network manager missing from lubuntu 14.04

I upgraded from lubuntu 13.10 to 14.04, network manager is missing from the tray after upgrading. Tried to run nm-applet in terminal, with below reply: "nm-applet-Message: using fallback from ...
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1answer
16k views

VirtualBox - How to connect LAN computers to Windows XP Guest

I have software in a Windows XP Guest that acts as a server. I need to have my LAN computers connect to it. Is the best way to use a bridged connection? Is there another way? I've tried setting up a ...
4
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1answer
447 views

Docker is blocked by UFW

I have problem with Docker network in ubuntu 14.04. I have installed Docker.io from official repo and I've added DEFAULT_FORWARD_POLICY="ACCEPT" to /etc/default/ufw but my Docker containers still ...
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0answers
304 views

Port forwarding out multiple VLAN interfaces that have same IP address

So I have an Ubuntu machine with multiple VLAN on an interface eth1 and each VLAN has the same IP address (172.16.0.2). I need to be able to simultaneously telnet into a rack of devices that are also ...
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4answers
79k views

Drivers for Broadcom BCM43142 on Ubuntu 14.04 (Trusty Tahr)

I am not able to install drivers for my Wi-Fi + Bluetooth card (Broadcom BCM43142). What I have done till now: I have tried using the drivers at this website. I tried following the instructions ...
2
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1answer
296 views

Can't get server to respond to SSH

I am the admin of a private server and I'm pretty new to administration. SSH was working fine until I upgraded to 14.04. Something went wrong with the upgrade so I downgraded to 13.04. Now SSH doesn't ...
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1answer
618 views

Cannot change Wifi settings, stuck on WEP Security

I just started using Linux and as such do not have a proper knowledge of how to use the command line and all of those sorts of things, so please try to bear with me :). I have been able to connect to ...
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1answer
51 views

How to monitor network speed of remote system on unity panel?

I have a linux-based dd-wrt router that connects my home network with outside world. I'd like to see, what is the current network load on the router in a convenience of the tray (a.k.a. indicator ...
2
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1answer
820 views

Network problem after upgrading from 12.04 to 14.04!

As title suggests, I upgrade to 14.04. After that browser informed: ...can't find the server at "host name"... So the name server seems not to work. How should I fix the problem?
4
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2answers
5k views

Why dhclient is still running when I choose static IP?

I modify dhcp to static in /etc/network/interfaces (like below). # The primary network interface auto eth0 iface eth0 inet static netmask 255.255.0.0 address 10.10.130.128 gateway 10.10.1.1 Then ...
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1answer
9k views

Wifi Connectivity, eth0 and wlan0 interface?

I do not have any problem in Internet connectivity, both in terminal and in browser. Few days earlier, I used to get a dynamic ipv4 address to eth0 from my ISP and the interface used to be up and ...
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4answers
19k views

Ubuntu 14.04 : My computer sees the wireless network, but won't connect to it, keeps asking for the WPA password

Specs: Computer: Sony Vaio VGN-NW240F Wifi card: Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01) More information (lspci -vv -s): Subsystem: Foxconn ...
0
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1answer
2k views

VirtualBox doesn't see Wireless USB Adapter

So I run Ubuntu 14.04 as my main OS, I have VirtualBox installed which was from the Software Centre, what I am trying to do is add my Alfa AWUS051NH Dual Band 802.11a/b/g/n WiFi Wireless-N USB Adapter ...
6
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3answers
12k views

How to enable Wireshark without running as root in Trusty 14.04

I installed Wireshark. Running as root is not recommended, so I Did sudo dpkg-reconfigure wireshark-common According to: http://wiki.wireshark.org/CaptureSetup/CapturePrivileges ...
3
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1answer
4k views

Network Menu missing in Menu Bar in 14.04

After upgrading from 13.10 to 14.04 LTS, the Network menu in my global menu bar has disappeared. I haven't been able to find any documentation outlining how to debug system menu items. How do I get ...
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1answer
429 views

Wait Until VPN Connection is Made before Mounting

Is there a way in /etc/fstab that I can wait for the VPN connection to be made, and then mount the network drives?
0
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1answer
77 views

how connect to internet from ubuntu in the middle of pc and internet

I have PC with windows OS this PC connected to my laptop by network cable and eth0 and My laptop OS is 14.04. also My labtop is connected to my internet ADSL modem via Wifi by wlan0. I want to know ...
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1answer
462 views

Tata Photon Not Connecting on installed Version of ubuntu But on Live CD?

I Recently Installed Ubuntu 14.04 LTS on my Laptop , And Then Used My Tata Photon Plus(CDMA) Connection , And Then yesterday i Downloaded Ubuntu SDK and Stuff on my laptop as i remember and Then ...
0
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1answer
132 views

Slow connection with a Broadcom BCM4318 wireless card [duplicate]

I recently upgraded to 14.04. I just recently had an issue where my wifi wouldn't connect. I restarted the computer and it connected fine but now my wifi speeds are extremely slow. I saw a similar ...
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6answers
28k views

Very slow, intermittent WiFi speeds with 14.04 and Intel PRO/Wireless 5100 AGN [Shiloh]

I did a fresh install of Ubuntu 14.04 LTS on the harddisk of a Lenovo Y650 Ideapad laptop. The wireless adapter is an Intel PRO/Wireless 5100 AGN [Shiloh]. Initially I could not connect to any ...
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1answer
1k views

Setting pdnsd server

I installed pdnsd: it is correctly working. My problem is that it ignores the opendns server I provided in the "server" section of pdnsd.conf labeled "resolvconf": instead of it, it uses the server ...
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0answers
285 views

Wireless networking on Ubuntu 14.04: Destination Host Unreacheable on LAN

I've been having a weird issue where I can ping only specific pcs on my LAN but not others but I can connect effortlessly to the Internet. the ping result for local addresses is: $ ping ...
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1answer
764 views

ethernet controller not working on new dell vostro 2520 laptop

I am very new to ubuntu. just today I when i tried to plug in my lan cable it was showing nothing . the result of sudo lshw -C network showing Ethernet Controller under *-network unclaimed. In ...
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1answer
85 views

Add new IP address to my hosting

I'm sory if its already answered but I'm very newbie and as I can see the other answers interfaces configurations are different than mine and I'm confused and worried about doing something wrong. My ...
0
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1answer
467 views

14.04 - Mac Mini - wireless connects but no Internet

I was able to install 14.04 on a Mac Mini pretty easily. However, (and I have searched for answers, here and other sources), the behavior is as follows: 1) Able to connect to Internet via Ethernet ...