0
votes
0answers
15 views

strange network hangs [closed]

I have a linux home server. It is a Asrock ION330, with Nvidia Chipset, running Ubuntu 14.04 LTS I has been working flawlessly during years, but since June it has been suffering some kind of strange ...
3
votes
0answers
50 views

Tons of unknown connections in nethogs

I am seeing hundreds of different connections to the same ip and port scrolling by when running nethogs. Occasionally the foreign IP and port will change (not always 80, but sometimes). I've noticed ...
0
votes
0answers
42 views

Networking issue in IBM x3650 after install Ubuntu 14.04.1

I have a problem making TCP connections after a fresh Ubuntu 14.04 installation. First of all, after booting the interface is always off. In my case the interface is manually configured and named em2. ...
1
vote
2answers
61 views

How can I deny internet access to all processes except the chosen ones?

Sometimes I am forced to use really narrow Internet bandwidth of 56kbps. On my Ubuntu desktop I have too many programs, that frequently check something on the net - and hunting and disabling them ...
0
votes
0answers
213 views

Ubuntu server boot assigns names to NICs erratically but all traffic is handled on only one NIC

I have two NICs, em1 and p3p1 on my Ubuntu 14.04 Server. During boot, network interface eth0 is renamed to both em1 and p3p1 but the order is not consistent from one boot to another. In use ALL ...
2
votes
3answers
87 views

Are there network connections that don't use the WiFii card or the Ethernet port?

I see many connections like when I use netstat, are they all to the internet? Are there any connections to the internet or other things that aren't forthcoming? I guess what I'm asking is what does ...
0
votes
1answer
82 views

Static IP addressing issue in Ubuntu on BeagleBoneBlack Rev C

I have my BBB configured to use a static IP address using the following in the file /etc/network/interfaces: allow-hotplug eth0 iface eth0 inet static address 192.168.0.1 netmask ...
1
vote
1answer
46 views

network interface counters not working?

I just built a router and installed it with Ubuntu Server 14.04 LTS. The system has two NICs, one for the internal network and one for the external (p3p1) network. I'd like to monitor external ...
1
vote
1answer
49 views

Naming PPP interfaces

I have two PPP peers, dsl-line1 and dsl-line2 which are configured with pppd on Ubuntu (Server) Linux. They are brought up by the /etc/network/interfaces file with the auto thingy however each PPP ...
1
vote
2answers
98 views

No eth0 after HD transplant

After moving the hard drive of a makeshift server to another compatible hardware (64-bit, same processor "generation", laptop->desktop) configuration, networking fails to initiate. Specifically: ...
0
votes
2answers
93 views

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 ...
2
votes
1answer
45 views

Traffic segmentation for a particular subnet

Two questions is it possible to segment traffic for a particular subnet to use an interface and at the same time receive traffic from a different subnet via the same interface? This is the scenario. ...
2
votes
1answer
42 views

Lubuntu IP conflict [closed]

I have this friend who recently installed Lubuntu on his Asus Netbook to try it out. Problem is that even though he can find all network connections and after trying to connect to two of them (giving ...
1
vote
1answer
46 views

Interface Priority in the Face of VPN

I have a few interfaces: wlan0, eth0, lo, and sometimes tun0. When I connect to the Juniper VPN, creating a tun0 interface, my existing connections on other interfaces (perhaps with the exception of ...
0
votes
1answer
585 views

Consistent network interface name ubuntu using pci slot

One can set consistent interface naming via mac address by modifying /etc/udev/rules.d/70-persistent-net.rules. Can you establish consistent interface naming by PCI slot number? (I tried but failed) ...
3
votes
1answer
125 views

Ubuntu eth0 not detected

After installing a new version of this distro, eth0 is not detected automatically. command inxi -SNxz result: Network: Card-1: Broadcom NetXtreme BCM57786 Gigabit Ethernet PCIe bus-ID: 01:00.0 ...
0
votes
0answers
41 views

How can I make CentOS 6 treating WiFi flexibly like Ubuntu 12.04?

In my office, I have AT&T Uverse. The router is a 2wire 3600HGV. The WiFI is provided by a Cisco Linksys E1000 that is plugged in the 2wire device. With my notebook running Ubuntu 12.04 LTS ...
1
vote
1answer
355 views

ssh ubuntu to android : No route to host

I am trying to log into my android phone (running sshdroid), using my laptop (ubuntu 12.04). I am on a university sub-network (on wifi), and so is my phone. I tried the following command: ssh ...
1
vote
1answer
45 views

DHCP Problems Virtualbox

I have some minor issues with Ubuntu server on a virtual machine and even though I have some assumptions as to what actually happens, I'd like to ask all of you about your opinion. Here's the deal: I ...
3
votes
0answers
229 views

Linux - Only first virtual interface can ping external gateway

I created 3 virtual interfaces with different MAC addresses all linked to the same physical interface. I see that they can successfully arp for the gateway (gw) and they can ping (the request is ...
-4
votes
1answer
232 views

How do I know all IP related to the wireless LAN in ubuntu 14.04? [duplicate]

How I know all IP on my LAN Wireless using ubuntu 14.04
0
votes
0answers
38 views

Ubuntu + CISCO VPNC CLIENT for my new ubuntu version (32 bit )

I have newest Ubuntu Linux version 10.04.4 (32 bit ) I want to install Cisco VPNC client on this linux machines in order to connect to other customers I little confuse , which VPNC cisco version ...
2
votes
2answers
97 views

Different sites on different interfaces using link aggregation

I read about Ubuntu Bonding and how it allows to bond multiple connections to get several advantages. My requirements is this : I want two different interfaces at a time (A wifi and other Ethernet) ...
0
votes
1answer
78 views

Unidentified network connections

I have an external-facing ftp/webserver (with virtual hosts) running Ubuntu 12.04LTS, and I have some concerns about some network traffic I'm seeing. Some background. I tried to be as preventive in ...
2
votes
1answer
98 views

How to make HA Heartbeat failover when either of two NICs connection is lost?

I was successful in configuring a simple Heartbeat setup on Ubuntu 12.04, which will fail-over two VIPs to a second server when BOTH Ethernet links fail. What I can't figure out is how to fail-over ...
2
votes
1answer
287 views

How to check what `wondershaper` has done?

I used this command: sudo wondershaper eth1 20 20 to limit network traffic. The command shows no errors. But I need a command or network monitor or gui which confirms this limitation. For example, ...
1
vote
1answer
84 views

Does a Virtual Machine Server Have a Web address? [closed]

Hi I'm trying to set up a server for my moodle virtual programming lab. It has something named a jail server that is used to run code remotely. I have a Ubuntu server set up with all the correct ...
2
votes
1answer
244 views

Configure guessnet to switch automatically between LAN and WLAN

I want to configure guessnet and wpa_supplicant such that if I plug in my LAN cable, it connect to the network via the cable and if I unplug it, it automatically switches to WLAN and vice versa. I ...
2
votes
1answer
1k views

How to enable two network interfaces both for internet in ubuntu12.04

My physical server A has two interfaces: eth0 and eth1. I intend to enable the two network interfaces both for internet in ubuntu12.04. I configure the /etc/network/interfaces as below: auto lo iface ...
2
votes
2answers
2k views

Configure multiple interfaces with different hostnames using DHCP and DNS

I have a machine running Ubuntu 12.04 Server with two interfaces connected (eth0, eth1) to the network. Our network is set up so that a FreeBSD based DHCP server hands out leases and registers the ...
5
votes
1answer
4k views

How to permanently disable a network interface?

I've brought down a network interface with ifconfig wlan0 down, but every few hours or so, the wlan0 interface comes back up and I can't figure out why. I don't restart the machine, never changed ...
1
vote
1answer
74 views

MAC Address changes after dirty shutdown

I'm having a strange issue which I originally thought was tied to the fact that I created an Ubuntu system from an image of another. However, after reinstalling Ubuntu from scratch I am getting the ...
3
votes
1answer
6k views

Cloned Linux system and /etc/udev/rules.d/70-persistent-net.rules

I set up an Ubuntu system and configured it properly, including defining eth0 in /etc/network/interfaces. I then imaged that system and cloned it on a new system. When I booted up the system the ...
0
votes
0answers
867 views

OpenSSH hangs after login without showing login prompt

I ran across an issue with ssh after fresh Ubuntu 13.10 installation on Lenovo T420. I tried git pull (which failed) and this led me to more general ssh failing. After spending some 2-3 hrs of ...
-3
votes
3answers
273 views

Configure eth1 to stop using dhcp [closed]

How do I configure eth1 (via terminal commands) to stop using DHCP. That is, if I had the ability to use the GUI, I would select the MANUAL setting.
0
votes
1answer
2k views

Ubuntu: how do you swap eth0 and eth1? (Ubuntu 13.10 server in a VirtualBox VM)

I installed Ubuntu 13.10 server (64-bit) in a VirtualBox 4.3.6 VM (Windows host) with one NAT adapter assigned. The only non-default software selected during installation was OpenSSH. So far so ...
2
votes
1answer
81 views

Does my VM need to be on the same LAN IP range to ping?

I have a home LAN where all internal IP addresses are in the rang 192.169.0.0-254. However, on one of those computers I have setup a CentOS VM, which currently seems to be set to 10.0.2.1. So the VM ...
4
votes
4answers
339 views

How to show network adapters with their statistics?

Is there any terminal command I can use to display all the network adapters like eth0, wlanoand their data statistics like data transmitted & received?
5
votes
1answer
1k views

Wi-Fi with WEP from command line in Ubuntu 12.04, Kernel 3.8.0-29-generic

I have removed network-manager and am trying to configure Wi-Fi with WEP manually. I am running on an X1 Carbon. Here are the commands I am running: ifconfig wlan0 down iwconfig wlan0 essid ...
0
votes
0answers
229 views

Access devices on a shared internet connection from other devices on home network (Ubuntu, shared wireless to ethernet)

Laptop OS: XUbuntu 12.04 Home PC: XUbuntu 12.04 guest on Windows 7 host Embedded Things: Mix of Raspberry Pis or Beaglebones I'm trying to share the wireless connection on a laptop with multiple ...
4
votes
1answer
4k views

Firefox: use system proxy settings, but where are these?

Running Ubuntu 13.10, Firefox is configured to use the system proxy settings, but it seems it fails to pick them up. The computer is connected to the network, and it's possible to establish a ...
0
votes
1answer
89 views

why gentoo livecd can not detect the linked network card?

The original os is Ubuntu 12.04, machine has 4 network cards, and the first netcard is linked. If use ethtool, will get Link detected: yes. When I use gentoo livecd to start, and config network, I ...
0
votes
0answers
70 views

Network connecting trouble shooting

I am trying to connect to the network of my school. With Windows 7 + IE it is not problem at all. I connect to it, no matter what web-page I try to reach, I get forwarded to ...
3
votes
3answers
1k views

/usr/bin/host not picking up changes to /etc/hosts even after reboot

I have a Ubuntu Server 12.04 (amd64) machine on which, when I change /etc/hosts, the changes aren't picked up, even after a reboot. I am using /usr/bin/host to test, but none of the other programs ...
0
votes
3answers
138 views

Why do two Ubuntu systems in the same network behave differently in DNS resolution?

I have two systems, both running Ubuntu 12.04, which are within the same network (connected by hubs without routing logic). Both systems are configured quite similar, but not identical. In particular, ...
2
votes
1answer
34 views

Ubuntu blocks access to services when not logged in

I'm not really sure what's going on here. I have the following: A fresh install of Ubuntu 12.04 LTS. Jira 6.1.2 installed as per instructions from Atlassian. Confluence 3.5.13 installed as per ...
0
votes
1answer
193 views

network device name is changed by itself

I use a Ubuntu-arm, uname -a Linux arm 3.7.8-x8 #1 SMP Sat Feb 16 04:15:13 UTC 2013 armv7l armv7l armv7l GNU/Linux I have two USB WiFi interfaces that are named wlan0 and wlan1 on ...
1
vote
0answers
151 views

Local Server not accessible on Linux

My Internet company set up a local server, where different files are hosted. I can download files at much higher speed from there. But for some reason, the server is not accessible from Ubuntu 13.10 I ...
2
votes
1answer
128 views

Mark packets between machines (client and router)?

Can I mark a packet on the client's OUTPUT chain and add an iproute policy on the router to route them via a specific gateway? This what I tried to do, but it isn't working. My client's mangle table ...
4
votes
1answer
593 views

How can I secure my Ubuntu 13.04 to prevent network attacks? [closed]

Is there a way I could protect my pc computer from being hacked in an event where the internet conection will be opened? Thing is I am going to Campus Party Colombia 2013 and I was sugested to format ...