Managing and using network connectivity on a Ubuntu system

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Ubuntu as Router / Bridge problems

I wanted to operate an Ubuntu16.04 as a Gateway for incoming VPN via fastd/batman and outgoing traffic to be redirected over an airvpn-tunnel (and later some more complex routing settings involving ...
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18 views

Lease on wlan0 renews every 15 seconds

Wireless performance is poor--a recent development. The following output repeats every 15 seconds in the syslog file: Jun 25 10:41:00 Bullwinkle dhclient: PRC: Renewing lease on wlan0. Jun 25 10:41:...
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11 views

Ubuntu networking not working after driver reset

Sometimes my desktop will be unable to reconnect to wifi after losing my connection. I am using Ubuntu 14.04LTS. I have found I can recreate this problem by running sudo modprobe -r rtl8187 &&...
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1answer
1k views

VIrtual network

I want to impliment pfsense to the local network. So before that I have to test it in a virtual environment, say couple of virtual-machines in an Ubuntu host using virtual box and one pf-sense machine ...
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9 views

Remotely log into multiple computers and run a python script

I am currently trying to set up network rendering with Blender using computers on different networks. I made a script that launches blender and connects to the host's computer. My problem is that I ...
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9 views

OpenVPN network asks for password

I setup a vpn connection under user_A and it works just fine (I used network-manager-openvpn-gnome to setup this connection). Now I added another user into my system (Ubuntu 16.04) -- user_B. I ...
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10 views

Upgraded to 16.04 — now have Flaky HTTP Connections

I have a laptop - Clevo W670RZQ - i7-6700HQ 2.60GHz Processor, Intel HM170, Dual Band Wireless -AC 3165 and Bluetooth Module, IEEE 802.11a/b/g/n, 433 Mbps, M.2 2230. Before, on 15.10, the laptop was ...
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16 views

Bluetooth on Ubuntu 14.04 works inconsistently

I have a lenovo T60. It seemed bluetooth would only work in certain kernels on certain days and sometimes it would not at all. In system settings, The Bluetooth is disabled by default and I cannot ...
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8 views

gvfsd-smb-browse is connecting to internet

Since some days I am watching that gvfsd-smb-browse is connecting to the internet. I don't know why... I don't have samba installed... I don't know much about gvfsd-smb-browse ... So, guys is it ...
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1answer
31 views

How to connect to a cable Internet service automatically in Ubuntu?

I want to connect to my cable ISP in India automatically. The ISP requires to open a browser page, then open the bookmarked page of their service, provide username and password and keep that page ...
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39 views

Ettercap --> unified sniffing --> no results

I installed Ettercap and looked for some tutorials. They all say to run sudo ettercap -G It opens the Ettercap window, I click "Sniff" --> "Unified sniffing" --> select "wlan0" --> Scan for hosts ...
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1answer
28 views

Prevent vlan and bridge interface rename to renameX form

Ubuntu 16.04 server. Almost all vlan and bridge interfaces are renamed to the form renameX. How to prevent, or control the way interfaces are renamed? I know that this is done by systemd, I know how ...
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30 views

No WiFi networks available - novice Ubuntu user

Recently installed 16.04 on my HP laptop; no WiFi networks showing up under network manager on the dashboard. I've tried installing new drivers but still no luck. The situation is aggravated by the ...
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1answer
29 views

Wlan can see networks but can't connect to any

I'm aware this has been asked before, but nothing in those replies helped me. I'm using Lubuntu and up to a couple of hours ago everything worked fine (i.e. wifi was up an running). A weird problem ...
1
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1answer
32 views

How to run a function for every specific received packet?

I am doing an experiment for my master thesis. I want to run a function (e.g. multiply two numbers) when a specific packet is received (e.g. a packet with destination TCP port 6666) and then forward ...
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14 views

usb keyboard and network stooped working

I have an old pc running Ubuntu server 14.04 lts, it is used purely to run plex media server, yesterday i noticed an update was out for plex media server, so my routine is to login to my server using ...
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3answers
164 views

Need help with Atheros AR9285 Wireless Network Adapter

Guys I couldn't get my wifi working. I've worked for long using just lan. But, tomorrow, I urgently need working wifi. Help :)) Thing I've tried: Checked bios - wifi enabled Tried clicking fn + ...
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1answer
27 views

Ubuntu Server 14.04.03- can not access web pages of server on my LAN through WAN

I am trying to access web pages served by a Ubuntu server on my LAN through my WAN. Everyone on the outside sees it fine and I can access it through my phones LTE connection but not on wifi or WAN. I ...
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2answers
6k views

Problems with aircrack-ng

I'm trying to crack an wifi, but when i type sudo airmon-ng start wlan0 it shows this: Found 4 processes that could cause trouble. If airodump-ng, aireplay-ng or airtun-ng stops working after a ...
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24 views

linux wifi work only if reboot with “sudo reboot” after restarting “/etc/init.d/networking”

I have dual boot Ubuntu 16.04 LTS with Windows 10 on a Dell computer. After we got a new router, it did not detect any wireless network. Networking was on but it said ‘no network devices available‘. (...
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4answers
86k 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 ...
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0answers
23 views

Certain domains (almost) not reachable

I have a weird problem. My internet connection works fine except for some domains. Two that I found so far: mendeley.com 9gag.com For some reason, their websites do not work in normal Firefox, but ...
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27 views

Fix slow wifi on Asus UX303 and Ubuntu 14.04

I have a Asus ux303ln-r4290h. Sometimes I have a very unreliably and slow Wifi connection (sometimes it works perfectly). I tested it with curl and google and it took 14 seconds to load. DNS lookup, ...
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14 views

RPi WIFI Dongle 0e8d:761b MediaTek Inc. problem with drivers

I bought USB Dongle WiFi from Ebay and I have problem with drivers. I get CD with this device but I don't know how to install it. On screen shot you can see what CD include. When I put lsusb I am ...
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9 views

Storing of proxies according to the network being accessed

Our smartphones have the ability to store proxy settings for a particular network so that these settings don't have to be changed every time we change the network, then why does Ubuntu desktop not ...
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19 views

What does it mean “unmanaged device”?

My network devices seem to be "unmanaged", or perhaps "managed outside the network manager". I assume this because of syslog messages like Jun 25 18:42:13 lati NetworkManager[811]: <info> (eth2)...
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1answer
31 views

How to permanently mount a network folder?

I have followed the wiki on this topic and applied this solution to fix the hang on shutdown and referred to a few other posts on here but can't get a Synology folder (Windows share) to mount on boot ...
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0answers
23 views

Access to white IP when VLAN is not default

I have Ubuntu 16.04. VLANs in NetworkManager. As per picture , I have 1 Eth interface and 3 VLANs, each with it's own GW. The default VLAN at the time is 5 (NAT). The other VLANs have white IPs ...
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0answers
11 views

NetworkManager fails to set IPv6 default route

In my syslog my NetworkManager cries: Jun 25 12:54:59 lati NetworkManager[811]: <error> [1466848499.853623] [nm-system.c:1266] nm_system_replace_default_ip6_route(): (wlan2): failed to set IPv6 ...
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0answers
16 views

Cannot connect to wifi with Realtek RTL8191SU on Ubuntu 16.04

I upgrade my notebook from 14.xx to 16.04. On Ubuntu 14 can i connect to my wifi network without problems. My wifi network is protected with WPA/WPA2 Personal and using mac filtering on modem. After ...
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6answers
36k views

Is there a safe way to disable DHCP from command line?

Short version I know this question is very similar to others and I did really search the Internet for answers, but it seems that no approach is working or the solutions seem to be "to complicated to ...
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6answers
110k views

How do I find my network IP address, netmask, and gateway info?

I'm trying to make my IP address static as I hear it fixes slow browsing issues. When I click on connection information under the networking menu of the gray taskbar, it tells me about the IP address,...
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0answers
19 views

Can't ping Ubuntu 14.04 host by name after IP address change

I did a basic installation of Ubuntu 14.04, installed winbind and samba and edited nsswitch.conf to add files wins DNS. I was able to ping the machine as well as access samba share using its hostname. ...
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1answer
24 views

Share Wifi over Ethernet with PS3

Currently I share the Wifi on my laptop to my PS3 over ethernet due to PS3 weak wifi. In Windows 8.1 all is running smooth. I open the Yotube app on my PS3 and I get full HD. I tried to do the same ...
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0answers
15 views

SSL handshake failed error in midori

I want to open this website https://jscalc.io/ in midori(0.5.11) but when ever I tried to open it the browser returened SSL handshake failed error while searching for solving this error I came across ...
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0answers
18 views

Sharing through Iptables stopped working

I have a server connected with the internet and the local network. The configurations are: eth0 - 192.168.10.1 eth1 - 192.168.0.6 (Internet) When I wanted to share the internet with other computers,...
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1answer
44 views

How to change the metric of an OpenVPN client default route

I'm connecting to an OpenVPN server from Ubuntu 16.04, with OpenVPN 2.3.10 from the command line using sudo openvpn --config client.conf, or as a service using sudo service openvpn@client start. I ...
4
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1answer
650 views

Ubuntu 15.04 has very poor PPTP connectivity

Under my university circumstances, I should connect to a PPTP VPN to access to the Internet. Thus a high performance and bug-free PPTP client is a essence for me. When I was using Ubuntu 14.04 and 14....
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0answers
16 views

Can no longer access OwnCloud after installing OpenVPN

Installed owncloud, configured it properly and it worked. Installed and configured OpenVPN and can no longer access the server. Whenever I try to connect to the server the connection times out. The ...
1
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3answers
3k views

how to install tp link wn725n wifi usb adapter on ubuntu Ubuntu 14.04.3 LTS

i have a usb wifi adapter Tp-Link model: wn725n it works very well on windows but i can't find any drivers for linux/ubuntu i tried everything online but nothing work so far i'm using Ubuntu 14.04....
2
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1answer
61 views

“No network connection” in Lubuntu 14.04

About 3 days ago my wife did an update using software updater on her Packard Bell dot-s notebook running Lubuntu 14.04. Since then the wifi doesn't work. The applet icon has a little x and the menu ...
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0answers
6 views

NAS Drive connection lost

I have an external NAS connected to my Ubuntu PC. Before some recent updates if I went to a website and wanted to download anything only local folders would display in the file browser folder. If I ...
2
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0answers
26 views

Wireless not working on HP EliteBook 745G2

After installing lubuntu alongside windows on my laptop, I noticed my wireless internet wasn't working (wired internet does). After a couple of hours on google and trying numerous other methods, I ...
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0answers
8 views

How to prevent SSHFS mount freeze after changing connection after suspend?

I am using SSHFS with reconnect attribute. It works fine, when I suspend notebook and start it again. But problem is when I take notebook somewhere - meaning different IP and different connection (...
2
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0answers
104 views

Why can't download the movie with torrent?

My router which run openwrt is 192.168.1.1 in the local net,and the other desktop pc is 192.168.1.101. /home/movie.mkv located on 192.168.1.01. To execute the command on 192.168.1.101 transmission-...
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32 views

Bad network card driver Ubuntu Server 16.04 LTS

After installation Ubuntu Server 16.04 LTS network card does not work. lshw -c network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller On Windows ...
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0answers
46 views

Ubuntu 16.04 USB modem detected as CD-ROM. Unable to connect

I am facing difficulty in installing my USB modem in Ubuntu 16.04. Most of the time I connect my USB broadband modem it is connected as CD-ROM. What I understood from the web was that usb-modeswitch ...