Tag Info

New answers tagged

0

On boot, there is certainly a call to ntpdate(man page) that asks a NTP ubuntu server for the current time. If you want to analyze all the traffic, you can use wireshark from another pc by sniffing LAN traffic in monitor mode, using ethernet it's easier. Unless, it uses encryption (like https), you should be able to see all what you want.


0

You shouldn't be grouping each interface together like you did. Start by defining each section for networking separately like below, with different auto entries corresponding with each interface. Also remember you need to provide a different iface line for each device as well. Like this: auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp


1

Use NetHogs (package nethogs) to see wich process causes the traffic.


-1

G'Day; I have the same problem with 14.04 on my Qasmio but I found if I go through the mobile broadband setup it seems to work, takes a few tries to connect just incase I also setup the wifi connection as I am using a wifi modem, anythings worth a try


0

Try do disable iptables: sudo service iptables stop && sudo service ip6tables stop Then restart hadoop. If this helped you need make proper configuration for your firewall.


1

if [ -e $IDIR ]; then read -p "It appears that Packet Tracer is already installed. Do you wish to replace it? [Yn] " NEEDREPLACE if [ "$NEEDREPLACE" = "y" ] || [ "$NEEDREPLACE" = "Y" ] || [ -z $NEEDREPLACE ]; then sudo rm -rf $IDIR else echo "Program Terminated"; exit 0 fi fi That rm spells trouble... if you install the ...


0

I am getting the same issue : 'Connection activation failed. (32) Not authorized to control networking. Also says, that cannot mount usb. Not authorized. I had just updated Ubuntu from 14.04 to 14.10. The suggested solutions did not help. Please answer.


1

Go to system settings and there should be security and privacy option. Tap on it and turn the privacy mode on. should solve your querys for your first answer yes its does send information to canonical but if you turn the privacy on that should do the trick no more sending data They mostly do it for seeing what type of software you use.


0

In the question you reference, the second answer shows the equivalent solution for IPv4. In the case of IPv6, the /etc/network/interfaces file should contain something like this: iface eth0 inet6 static address 2001:db8:1:2::2 netmask 64 # Add additional IPv6 addresses when $IFACE goes up up ip -6 addr add 2001:db8:1:2::3/64 dev $IFACE up ip -6 ...


0

You could try this enter settings, and then network, and then delete and turn of network, and then turn it on again and reboot, and if it dos not self set up a new network create one, and it might work, and remember to write down the ip, based and the mac adr, and the code for the security. (Wpa).


0

May be you could try to limit the speed of the ethernet adapter ? Try: sudo ethtool -s eth0 speed 100 duplex half Or if this does not help, try https://unix.stackexchange.com/questions/37727/solving-ethernet-watchdog-timer-deadlocks


1

The script shouldn't be run from your home folder. It should be run from a folder containing only the packettracer assets. See SDIR=`dirname $_` ... cp -r $SDIR $IDIR And, I'm totally not installing a binary deb from mediafire. Can't help you with that part.


0

Try with this What follows are the absolute minimum instructions that you need to get a basic PPTP VPN server running under Ubuntu. Clients will then be able to VPN into the server and route their internet traffic so that it goes through the server to the internet. First, install the required software: sudo apt-get install pptpd Second, enable ...


0

In a terminal type: sudo nano /etc/NetworkManager/NetworkManager.conf and change the line that says managed=false to managed=true save the file and exit. Reboot your computer or just restart the network manager by: sudo service network-manager restart Let me know if this solves the problem.


0

Download the drivers from here You will have to select amd64 for a 64 bit install or i386 for a 32 bit install and then select a mirror site. If you are unsure if you have 32 or 64 bit, open a terminal window (CTRL + t) and enter arch, x86_64 = 64 bit. Then double click on the downloaded file to install. I checked just a few days ago and the version of ...


0

One time for the duration of the session (ie. the compiling of the software): BUILD_OPT=1 USE_64=1 export BUILD_OPT export USE_64 You need to issue this before the make nss_build_all.


0

The easiest way is boot from an installation media and then use chroot. Boot from an ubuntu installation media. Mount your system drives: sudo mount /dev/sdX /mnt chroot into your system: chroot /mnt /bin/bash Install networkmanager with sudo apt-get install network-manager Reboot your system


1

Go to system settings, software and updates, additional drivers. Then select the broadcom driver and Apply changes.


1

Happened to face same problem .Thats how i solved it. I happened to remove the network-manager and yep now I have now internet. So I came to know after that best shot is http://packages.ubuntu.com/. So but which package I asked myself. So what i did i executed command again sudo apt-get install network-manager. Its obvious it fails, but I came to know ...


0

Detect and install additional Ubuntu driver with ubuntu-drivers package. Open a terminal Ctrl+Alt+T and type following: sudo ubuntu-drivers autoinstall


0

With no IP address in ifconfig and no route details, it doesn't appear that you have connected to the router. Let's see what Network Manager is doing as you try to connect: cat /var/log/syslog | grep etwork | tail -n20 Please run the command with any ethernet detached and as you are trying to connect with wireless. As the output will be lengthy, please ...


0

Please obtain a temporary internet connection by ethernet, tethered or any other means. Next, open a terminal and do: sudo apt-get purge bcmwl-kernel-source sudo apt-get install firmware-b43-installer Reboot and your wireless should be working.


0

We figured it out. We needed to add configuration to neutron-openvswitch to enable LBaaS agent. juju ssh neutron-openvswitch/0 Install lb agent sudo apt-get install neutron-lbaas-agent Modify /etc/neutron/neutron.conf by adding the following lines service_provider = ...


1

No, iptables does not support jitter simulation.


0

Eventually, I managed to make my service listen to the port 9000 by adding to the /etc/ssh/sshd_config file the following line: Port 9000 I followed this serverguide/openssh-server (it contains also some important remarks about making a copy of the original file, restarting the sshd server application etc.) After this I can see: telnet output: ...


0

It won't let me comment, and I'm not sure if this is the correct answer, but I have no choice other than posting it. I had the same problem, and, if I remember correctly, I managed to correct it by downloading the bcmwl-kernel-source package manually. Download the package here. I used a flash disk and manually installed it using: sudo dpkg -i ...


0

While there may be multiple causes, I began getting the exact same error on ubuntu 14.04 after a change of ISP. Some naughty ISP's use local domain addresses for their DNS servers as explained here. My ubuntu box's network uses a manual configuration so setting the DNS to my router's IP instead of the ISP's DNS server address fixed the problem. ...


1

I had this same problem: lsusb was detecting the card properly, and so was NetworkManager but it was unable to connect. The solution that finally worked for me was to use wvdial. Running wvdialconf in the terminal with my modem plugged in automatically detected it and generated the config file (/etc/wvdial.conf) which I then edited. But you can also ...


0

Hooks in /etc/pm/ are ignored in Ubuntu 15.04. Instead you have to create systemd services and enable them. Although first try adding sleep 10 iwconfig wlan1 power off exit 0 to your /etc/rc.local file. This should turn of power management at boot and might help with the connection. To permanently disable the power management look here. More info ...


1

You can turn off automatic updates and checks for automatic updates by: Open Software & Updates and on the Updates tab change Automatically check for updates to Never. Also, disable any automatic backup services such as Google Drive, Ubuntu One, Dropbox, etc,.


0

I know this is an old question, but it came up sorta high up in the Google search, so, for anyone having troubles for SSH'ing from a Windows to a Linux box, in my case, the problem was that I hadn't installed the SSH server on my Linux Mint machine. Even if you do have SSH installed (like for connecting to another computers), you need this package to enable ...


0

First, you need the public IP address assigned to your router/modem by your ISP. Most ISP assign dynamic IP's, which can change regularly. E.g. the public IP of my router changes daily at 3AM. Some routers (like some AVM FRITZ!Box or D-Link models) offer a service which, when a new IP address is being assigned, the automatically upload this IP to a ...


0

If found that can be a dhcpclient scripts bug. http://blog.schlomo.schapiro.org/2013/11/setting-hostname-from-dhcp-in-debian.html Try to clean $old_host_name on ip renew echo unset old_host_name > /etc/dhcp/dhclient-enter-hooks.d/unset_old_hostname Also static /etc/hostname seems to has prority over dhcp answer so leave it empty > /etc/hostname ...


0

TL;DR first, more details following: "Connection refused" is the error you get when you try to connect to a service on a computer or server (or locally on your own computer) when the said service is either not listening on the specified TCP port (wrong port or service not started), or when a firewall explicitly rejects a connection instead of ignoring the ...


0

It looks like your Nginx host isn't set up to listen on port 8000. What does your virtaul hosts file allow? i.e what does your /etc/nginx/sites-available/mydomainname.com.config allow in it's config? Here is an example config, what is the listen line say in your config? server { listen 80; ## listen for ipv4; this line is default and implied ...


0

Instead of installing directly, use 'Try ubuntu', then try to look if there's an additional driver and use it. When connected, install ubuntu.


0

Really I don't know why ifdown doesn't work with crontab. Anyway, I faced the same situation a long time ago and have a workaround solution, hope this will help you. Replace ifdown eth1 with /sbin/ifconfig eth1 down 1> /dev/null This worked for me.


0

There are many steps you can take. You already mentioned firewall: sudo apt-get install ufw sudo ufw enable But to prevent network sniffing, encrypt everything. You can easily use a paid or even a free vpn service for fully encrypted network traffic. If network traffic is sniffed, it is almost useless unless they can unencrypt tls and ssh. I personally ...


1

As you'll be on the same LAN you might be vulnerable to what's called a man-in-the-middle attack. An attacker could make his computer tell your computer that it's the router and route all your traffic through his machine, spying on it in the process. (edit:Google "ARP spoofing") I'm honestly not sure how you'd go about preventing this, if I'm on a LAN I ...


0

I have this problem too. It basically means your output wifi buffer is getting filled up. The temporary solution would be to disconnect and reconnect the wifi to clear the buffer and reestablish the flow of data. The issue is due to buggy wifi driver. This driver compilied from source published in this url seems to give us some more time ...


0

You can Enhance your security by enable roundcube section Roundcube does have captcha plugins available which will mitigate this, but users will complain if they have to type in a captcha to login for mail. Fail2ban provides an easy solution for this. First up, we need to add roundcube into /etc/fail2ban/jail.conf [roundcube] enabled = false port = ...


0

First, check the settings in the router. WPA2-AES is preferred; not any WPA and WPA2 mixed mode and certainly not TKIP. I have better luck with a fixed channel, either 1, 6 or 11, rather than automatic channel selection. Also, be certain the router is not set to use N speeds only; auto B, G and N is preferred. After making these changes, reboot the router. ...


4

Compile and install the proprietary Realtek 8192cu driver. To do this, run the following commands in an open terminal: sudo apt-get update && sudo apt-get install git build-essential linux-headers-generic dkms git clone https://github.com/dz0ny/rt8192cu.git --depth 1 cd rt8192cu sudo make dkms For hard installation use: make sudo make install ...


1

Use the iptables-save command instead. Firewall rules should never go into rc.local script. rc.local is the last thing to be executed. If a block rule has been placed into rc.local there is a small time frame where an attacker can exploit a rule not being in place. While it probably doesn't matter with this situation, it is still best to not get into a bad ...


0

This sounds to me, from the information that you provided, as if your internet connection is in some way changing the IP address of the network interface that you use to access your homegroup. This would happen if you are using any form of a dial-up technology, or if your router device is not in fact on the same IP range as the Windows 7 machines. Without ...


0

Do you have two separate NIC's for each interface? To the best of my knowledge, a single NIC can't run on two separate networks, so if you're configuring it to behave like such, that could explain your packet loss. Have you looked into doing a bridge on your interfaces?


3

You can't copy files between two computers without using a network or storage device. This has no sense, you need a transfer media.... To use a network: you have to use scp. scp copies files between hosts on a network. It uses ssh for data transfer, and uses the same authentication and provides the same security as ssh. Copy the file "textfile.txt" from ...


1

how can i transfer a file between two Ubuntu accounts without using any external storage device or net First need to create directory for files: mkdir ~/user2files User with admin privileges need to add permission for user2's group: sudo chgrp -R /home/user1/user2files Copy files to created directory: su user2 -c 'cp /home/user2/file ...


0

I am not sure I understand everything you say. But NetworkManager saves into the keyring your openVPN password unless you tick/check the "Allow all users to use this connection" in the VPN configuration in NetworkManager applet. So if you checked that checkbox, the password is saved in /etc/NetworkManager/system-connections/YourOpenVPNConnectionHere You ...


0

It seems to me that Ubuntu favours the ethernet connection when resolving the address. This means that when you try to reach 10.23.161.x, you get the 'outside' connection; your traffic is blocked by 10.23.161.x's router firewall. If you can use the printer's internal (private) address through the wireless network, you could try the solution from ...



Top 50 recent answers are included