Managing and using network connectivity on a Ubuntu system

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1answer
9 views

Nmap Error when using the “–script” arg

i just installed the nmap network scanner, and when i try to use it whith the "-script" parameter, it doesn't work: example: soufiane@soufiane-cvc:/usr/local$ nmap -p143,993 -Pn –script ...
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0answers
13 views

What are the directories and files that I should keep in sync for a cluster server

I am currently wanting to set up new clusters. Each cluster is defined by its software installed, software settings, and its home folder files. I want only the above to be cloned and not things ...
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11 views

Ip Forwarding between wlan0 <=> eth0: works in Terminal, fail in Browser?

I enabled ip-forwarding between my interfaces wlan0 and eth0 : in /etc/sysctl.conf sh "echo 1 > proc/etc..." 3 iptables rules. IpTables rules: sudo iptables -t nat -A POSTROUTING -o eth0 ...
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6 views

How to connect to WAP on xubuntu 15.04

Problem: Laptop does not connect to wireless access point. My Lenovo tablet shows network KPP1 (28:10:7b:62:76:4e), -68 dBm on channel 6. I get a 12 Mb/s download, 2.3 upload speed. On my xubuntu ...
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2answers
28 views

How can I cut the mac address out of DHCPDUMP?

I am trying to use dhcpdump to recognize people logging onto my home network and give them a tailor made greeting using a credential file. I cannot get the mac address out of the results of dhcpdump. ...
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11 views

How to mount a dynamic share (NFS) from a script by a non root user

I need to mount a network shared folder (with rw access) from within a script on a headless ubuntu server. The script will receive the ip address for the share as an argument. The script will be run ...
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18 views

ufw won't allow connections to port 5432

I've installed Postgresql 9.4 on Ubuntu Trusty from the PGDG ppa. I've created a database and set it listen-address to '*'. I've made an entry in the pg_hba.conf file. I can connect locally with no ...
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10 views

iptables set-mark doesn't work

My machine has two network interfaces, one is wired (eth0) and the other one is wireless (wlan0). The wired one cannot connect to any external NTP server because there is a firewall outside. The ...
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0answers
10 views

Active Directory Domain Controller Not Appearing in Network Folder

I'm having issues with my Active Directory domain controller, where my server does not show up on Network or My Network Places. I am running Samba 4.1.6-Ubuntu on Ubuntu Server 14.04.3. This issue ...
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12 views

Wireless on Ubuntu 14.04 not working all the time

This is my wireless driver: product: BCM4313 802.11bgn Wireless Network Adapter vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:02:00.0 version: 01 width: 64 bits clock: 33MHz ...
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9 views

Iwconfig set bitrate impossible

I've got a problem with iwconfig. Prelude: I had a slow wifi connection, after some research I found that can be caused by a bad bitrate configuration. I launch iwconfig and Bingo ! : eth0 no ...
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18 views

Failed to connect Internet

I'm currently using Ubuntu 15.04, my computer is a Sony Vaio 32 bits, AMD E-450 APU. Suddenly, with no previous problems before this, I tried to connect Internet and out comes this: Failed to ...
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5 views

IPForward fail with wlan0 AP + eth0 WWW

I did it: wlan0: Wifi AP (Dhcp) eth0: Internet access I can verify the WWW is joinable by eth0. Clients can connect to Wlan0 AP. It works well if I redirect all traffic to localhost with ...
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0answers
8 views

How do I debug a large pause before network transactions when Network Manager is disabled?

I have had a network problem since upgrading to 15.04 for which I have tried a new network card and clean installation of ubuntu, neither of which worked. My system was fine under 12.04 and 14.04. If ...
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3answers
23 views

Block connections to open WiFi networks

My users are using Ubuntu on corporate laptops. They don't have sudo permissions. IT security policy deny connections to open WiFi networks. How to setup Network Manager to deny connections to that ...
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0answers
15 views

Dual Boot Win 7 and Ubuntu and can not get wired connection to work

Recently I decided to try out Linux and chose Ubuntu. After backing up all my files I went ahead and installed Ubuntu 15.04. I did this in a partition as a dual boot knowing my family would still want ...
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17 views

Failed to add/activate connection. (32) Insufficient privileges

I am doing a fresh install of a minimal Ubuntu system with MATE desktop environment. When I click on NetworkManager's icon and then a wireless network to connect to, I receive a dialog box that says: ...
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18 views

Setting IP routes using script

My Setup In this setup, the server can see the routers but not see each other causing the clients to not be visible to each other as well. The VPN is set up using PPTP and the routers have DD-WRT ...
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0answers
11 views

Waiting for network configuration (on boot-up)

I've noticed lately on my new 14.04 Server that I get the following on boot-up: Waiting for network configuration followed by: Waiting up to 60 more seconds for network configuration and ...
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0answers
7 views

Linksys Wireless-G USB Network Adapter WUSB54G ver 4 Can't Connect to WiFi

I'm a newbie to Xubuntu and am having trouble with getting my usb adapter to work properly. If anyone tell me how to do it step by step it would be greatly appreciated. I'm currently typing this ...
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18 views

WIFI fails after connecting

After connecting to the WIFI, my connection fails (this is normally after 15-30 minutes). I then go to network manager and find all the WIFI points have disappeared. The only way to connect up again ...
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0answers
14 views

BCM43228 not working after reboot

I am posting this thread after trying the solutions already provided in the forum but it does not work for me. Installed ubuntu 14.04 LTS version on Dell Latitude E6420 with a broadcom wifi devicie ...
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24 views

WiFi Has Stopped Working on MacBook Pro 7,1 with Unbuntu 14.04

Okay, so I'm very confused about what is going on with my computer. Below is my initial query, followed by an update to the situation. Initial Query I have recently removed OS X on my MacBook Pro ...
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14 views

Network Drives Not Mounting on boot untill ufw is disabled/enabled

I am relatively new to Linux but I am enjoying it and even more enjoying learning it. Here is what I set out to accomplish. I have an Windows media box (running win7) that i want to connect the shares ...
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9 views

Ubuntu 14.04 showing port 80 as filtered

I am having a problem connecting my ubuntu 14.04 machine to the Internet. The machine was working fine and suddenly stopped working. I can ssh into the machine using ssh gateway but I can't ping the ...
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11 views

Realtek rtl8723be.conf file doesn't exist | wireless not working | HP probook 455 G2

I have 15.04 Ubuntu MATE build and i cant get my wireless to work. I've tried everything , installing rtlwifi_new drivers, this is also happening with MINT and 15.10 beta 1 release. I tried it with ...
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15 views

Wifi problem rtl8723be card

I installed Ubuntu 14.04 in a laptop with a rtl8723be card and I can't get an stable wireless connection. After 2 or 3 min my wifi disconnect and I have to reboot. I have tried this solution: echo ...
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19 views

How to perform NAT to DDNS provided ip address using iptables

I have a device connected to the internet via a 3G Cellular link. I can't get a valid static IP address for my connection due to the network operator rules. On the server side, the application which ...
0
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2answers
30 views

Problem with wireless 14.04 (RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller)

I just installed Ubuntu 14.04, and am h aving trouble getting my wireless working. I've run Ubuntu desktops before, but I just can't get it working, and I'm not sure what to do. This is the output of ...
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17 views

ubuntu 14.04 not enable wifi (wireless type : RTL8723AE)

sts@sts:~$ sudo lshw -C network *-network DISABLED description: Wireless interface product: RTL8723AE PCIe Wireless Network Adapter vendor: Realtek Semiconductor Co., Ltd. ...
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16 views

I want to use ipv6 but when it's on the adapter sends deauth packets… what's going on?

The internet works fine when I don't enable ipv6, but when it's on I get deauthentication packets in dmesg outputs: root@grepsly:/home/isme# dmesg -T |grep deauth [Mon Aug 31 23:18:24 2015] wlan0: ...
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1answer
28 views

Wireless network disabled

i have a hp pavillion laptop. i have installed ubuntu 15.04. for the first time ubuntu has problem detecting wireless network. i am posting data here. if anyone could help me out it would be of great ...
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0answers
11 views

Unable to Boot OS of Cloned VM

Using VMware version 5.5.0, I cloned a virtual machine running Ubuntu 14.04 LTS (GNU/Linux 3.13.0-24-generic x86_64). Prior to powering on the cloned machine, I disconnected it from network adapters. ...
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2answers
21 views

how to obtain ipv4 address of ubuntu server running in virtual box along with ipv6?

i have installed ubuntu server on virtual box. When i execute the "ifconfig" command it shows the info of eth0 and loopback with inet6 address .but i want ipv4 address instead of ipv6 and i am not ...
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13 views

Inconsistent Wifi on Ubuntu 14.04 fixes work for a day then never work again

So for the past week I've been having an issue where Linux is saying my wifi is disabled via hardware switch. The only problem is that my laptop has no hardware switch for the wifi but it has a ...
1
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1answer
15 views

Moving a file from machine1 folder1 to machine1 folder2 using machine2

I hope I can explain my question clearly, bare with me. I have a machine I use as server (transmissiondeamon, plex, fileserver, that kind of stuff) This machine is headless so if I need to move a ...
2
votes
1answer
33 views

No internet connection over cable (but wifi works) [on hold]

I have Ubuntu Desktop 14.04 installed on MSI GT660. I am Linux newb. I can connect to internet using wifi but not over cable. contents of /etc/network/interfaces: # interfaces(5) file used by ...
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14 views

Facing issues with Realtek RTL8723BE wireless adapter

I am facing issue with realtek RTL8723BE wireless adapter. Very poor reception and for a very short range. I tried installing the new driver from the github How to install Realtek RTL8723BE wifi ...
0
votes
1answer
32 views

VPN slows down whole internet connection

I used to connect to a home server through a private VPN and I used it just to access phpMyAdmin and the MySQL database (from my application). When connected to the VPN, my internet speed was not ...
1
vote
1answer
49 views

How to make static IP address dynamic in /etc/network/interfaces

I need to set the IP address of a ubuntu device() to be read from an EEPROM. The user has he option to change the IP address as well. I know the commands to read and write to the EEPROM. But how ...
0
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1answer
31 views

Why my Ubuntu block wlan & how to unblock?

Everytime I boot Ubuntu, my wifi lan is Soft-blocked. ( I did rfkill list, rfkill unblock wlan to verify the case. In addition I note that it is blocked some seconds after boot is finished). how can ...
1
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1answer
39 views

How do I connect a Cannon Pixma MG3550 printer wirelessly to my laptop?

It will not read the installation cd as its for windows, I have been on the cannon site but that is for windows or a mac. I went into settings but need a url number for the printer(absolutely no ...
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0answers
8 views

Cancel 'rfkill wlan' at boot?

When I boot, my Wifi is always soft-blocked. In terminal, sudo rfkill list does: 0:hcio: Wireless LAN Soft blocked:yes Hard blocked:no How can I definetly unblock Wireless LAN ?
0
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1answer
28 views

ubuntu 14.04 - Samba - How to share from another drive?

I am pretty much done setting up my home media computer but I am stuck on one of my last tasks. I am new to linux/Ubuntu so I have a lot to learn about permissions and what not and I'm pretty sure ...
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0answers
4 views

Use systemd to “mount” wlan0 at boot

Context (if needed) : at boot, the service "myservice" is launched. It manages to "up" the wlan0 interface. But it does not exist yet at boot. ifconfig, after boot, lists only eth0 and lo. If ...
0
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1answer
19 views

Cannot ping domains and ips from ubuntu server

I have a Ubuntu server which is running without any issues for the last one year.But now there is a wired issue caught my server and take server offline frequently. I can connect server via VNC ...
0
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1answer
14 views

Boot, How to run my service **after** Network Manager?

I have made a service - which changes settings of network interfaces -. I want to start it at boot. Issue: even if I set it 99 priority, it works only a few seconds. It seems its interfaces config ...
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2answers
37 views

Hardware Networking

I'm setting a static on my P.C. such as 10.1.18.77 255.255.255.0 10.1.18.1 10.1.18.1 My Hardware on my network is 192.168.200.100-200 I would like to enter 192.168.200.100 in my browser and see my ...
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0answers
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Errno socket error [on hold]

Running Ubuntu 15 on Windows 10 through VMware. It seems it is general networking error. But I have no idea what could be triggered it or how to fix. Code: buildozer android debug Error: ...
0
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1answer
33 views

Internet Randomly Stops Working, But Starts Working Again Upon Reboot

I am new to Ubuntu 14.04 LTS and I just installed it today on my Lenovo G50-70 laptop. Before marking this as duplicate, please hear me out. I have read countless posts on this issue, but none have ...