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Questions tagged [networking]

Managing and using network connectivity on a Ubuntu system

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2 views

Fresh install of freenas can't get to GUI with ip

I have freshly installed freenas but i have a problem as i am not able to see it in the web browser. I have no idea what to do as i first changed the ip to make it static then reset everything then ...
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ettercap filters, Drop and Inject

if(ip.proto == TCP) { if (tcp.src == 2404 || tcp.dst == 2404) { if (DATA.data+6 == 0x64 && DATA.data+8 == 0x07) { msg(" ...
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Persistent static routing configuration on 18.04 Server (CloudInit)

What is the current best practice or de-facto standard to define custom routing for Ubuntu Server 18.04? Cloud-Init can only set to, via and metric parameters in the main routing table: https://...
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39 views

Cannot connect to wifi after installing Ubuntu 18.04

I've just started using Ubuntu 18.04 but my wifi is not working :( When I wrote lspci -knn | grep Net -A3; rfkill list in the terminal the output is 0:hci0: Bluetooth Soft blocked: no Hard ...
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22 views

can't access ssh server using publ [on hold]

Basically I have enabled ssh server in kali linux, and also have enable PermitRootLogin: Yes. The problem is that when I do ssh sshd@192.168.0.225 from windows and provide the password, it works just ...
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13 views

Updated to Ubuntu 18.04 and Wi-Fi is now very weak - RTL8723BE [duplicate]

I just updated to Ubuntu 18.04 and my Wi-Fi stopped working on my Lenovo Laptop. Wi-Fi itself is still working for other systems, but my laptop can only connect once I'm next to my router. Seems the ...
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14 views

How to enable monitor mode on rtl8812au on ubuntu

After installing rtl8812 wifi driver successfully on ubuntu, I have created a monitor mode interface but what I found the address of the newly created monitor mode is all zeros. and also I can't use ...
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1answer
46 views

network UNCLAIMED (Intel I219-V) Ubuntu 18.04.1 LTS

After Ubuntu updated to 18.04.1 my wired network does not work anymore. ifconfig -a lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 ...
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ralink rt3290 driver for ubuntu mate 18.04 not working

I have an HP Pavilion laptop and have just upgraded from Ubuntu Mate 16.04 to 18.04. After the upgrade my wireless does not work. It already had problems in 16.04 for which I had found a solution. ...
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8 views

Anbox failing to install

I have Lubuntu, and I'm trying to install anbox. Says anbox installer is deprecated. I'm a newbie on this, can anyone give me some tips!
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13 views

how to enable wireless connection in recovery mode? [on hold]

I need to get the network .. I used ping -c 4 8.8.8.8 but got network is unreachable .. I don't have wired connection . Can I make wireless work?
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HP laptop, no internet connection after upgrading to Ubuntu 18.04

Since I have upgraded to Ubuntu 18.04 I have problems with the internet connection. To overcome temporarily this problem I have edited the resolv.conf file inserting the nameserver 8.8.8.8 (...
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i am not able to open network manager in kali linux it shows networking disabled, [on hold]

But internet is working please help(I am using kali linux windows 10 app with remote connection desktop).I have searched many things on internet but it doesn't shows a specific answer.
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24 views

No wifi adapter found with WMP54GS on Ubuntu 17.10 [on hold]

My adapter is detected: lspci -knn | grep Net -A3 05:00.0 Network controller [0280]: Broadcom Limited BCM4306 802.11bg Wireless LAN controller [14e4:4306] (rev 03) Subsystem: Broadcom Limited ...
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23 views

How do I get Wi-Fi back on new Lenovo all-in-one desktop?

Wi-Fi was working before I burned Windows to install Kubuntu 18.04.01 LTS which is working beautifully otherwise with network via ethernet cable. Here is requested output of lspci -knn | grep Net -A3;...
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15 views

How to debug and stop DNS redirecting?

I am experiencing DNS redirects. It seems to occur only in browsers (chrome, firefox, etc; not on the console when using dig, curl or similar) when trying to access non-existing domains and it always ...
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14 views

Running dnsmasq dhcp on Ubuntu 18.04

I am trying to setup wifi router on ubuntu with two wifi cards connected. Router is to be configured by application that uses command line tools like iwconfig, dnsmasq and hostapd. On Ubuntu 17.10 ...
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1answer
35 views

Get MAC address of connected device

This is my network setup. In case of PC 1 send a packet to PC 2 and router 1 has a default route to Eth 1. To transfer the packet from router 1 Eth 1 to router 2 Eth 1, the packet will be sent with ...
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1answer
34 views

Ubuntu Server 18.04.1 Cannot Keep Static IP Address After Assigned

I am trying to assign a series of static IP addresses to my homelab server so that I can run a media service. I edited /etc/netplan/ with the following: 01-netcfg.yaml: network: version: 2 renderer:...
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13 views

This is more a question about benefits of NAS vs Server and what your opinion is [on hold]

For my work I need to use different software that run only under windows. I am unsure whether i should go with a NAS and install this software on the NAS (eg. synology) or consider Microsoft Server ...
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17 views

Port forwarding between three PC's

Architecture: configuration: PC 1 eth0(a) - 172.xxx.xx.xxx PC 2 br0(b) - 172.xxx.xx.xx PC 2 br1(e) - 192.xxx.xx.xx PC 2 container eth0(c) - 172.xxx.xx.xx PC 2 container eth1(d) - 192.xxx.xx....
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When I puted wifislax on USB and run it I ran into the problem of not defining the internal wireless card [on hold]

When I burn wifislax on USB and run it I ran into the problem of not defining the internal wireless card so please how to
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1answer
25 views

package forward low performance and low forward speed in using Ubuntu as router

I have built a router based on Ubuntu Desktop 18.04.1(kernel: 4.15.0-32-generic x86_64). I followed this guide https://killtacknine.com/building-an-ubuntu-16-04-router-part-1-network-interfaces/ . ...
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How to establish a serial connection with my network switch?

I just bought a new switch to setup a high-speed home network. It's a netapp CN1610 BTW, I bought it from ebay. I have been trying to connect to it with serial, but have been experiencing difficulties....
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25 views

How can I make VirtualBox act like a real computer? [on hold]

I tried to find out who is connected to my network using my Ubuntu guest OS in VirtualBox running in a Windows 10 host OS. I couldn't because obviously this virtual machine even though it uses my ...
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31 views

“Activation of network connection failed” for wired connection, even though it works in interim (18.04)

I am connecting an external device via ethernet. In network manager, it shows the wired connection as "Connecting". I am able to ping and SSH to the remote device during this phase, the connection ...
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0answers
25 views

Directly connect to a WiFi network in Ubuntu 18.04

I am using Ubuntu 18.04 and everytime I want to switch to a different WiFi network, I have to click on the "Select Network" option and then have to to select my desired WiFi network and then click "...
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26 views

delete command under 18.04

just upgraded to 18.04 and the delete command does not work on my NAS. Synology NAS DSM 6.2-23739 Update 2 Model DS115j any ideas on how to start debugging? (not a rights issue - all works with ...
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1answer
18 views

Forward X session over SSH for an already-running program?

I know how to forward X sessions to my local computer, and I know how to run GUIs to start on the remote machine using export DISPLAY=:0.0. However, let's say I have a bittorrent client, like ...
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28 views

Ubuntu 18.04 minimal server has two ip addresses!

I'm seeing two different IP addresses on my Odroid XU4. I only noticed after I set up a Unifi controller on the box, but then tried to ssh into both of the addresses with success. I only want 192.168....
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Issues with ethernet after updates ubuntu 16.04

I was prompted by Software Updater to update my device, which I did after finishing the update and rebooting it, suddenly the Ethernet Connection seems to have stopped working. It gets stuck in the ...
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Ubuntu 18.04 internal domain resolution failing

Still getting to grips with netplan, and I am having intermittent failures with internal host resolution. External hosts resolve fine. When I manually select the server it works. I think the internal ...
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1answer
24 views

DNS & .local domain 18.04

I am trying to join Ubuntu laptops to our domain company.local (Yes I know .local is bad practice) I am having some issues with only what I can assume is DNS. I can't ping the domain controller (dc....
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59 views

Wifi Problem, Ubuntu 18.04

The main problem is the 'No wi-Fi Adapter Found.' I've read several threads concerning this problem, and tried to follow the leads of some of them. Thus, I searched for my network adapter, which is ...
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0answers
13 views

Why are there multiple routes to the same destination by default?

When you have multiple NICs using the same gateway/subnet, there are multiple default routes, multiple routes to the subnet and multiple routes to the gateway in the routing table after boot: default ...
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17 views

Apt still can't connect to security.ubuntu.com even after disabling ipv6

What I'm getting so far: (even after disabling ipv6) ubuntu@ubuntu:/etc$ sudo apt-get update Err:1 http://archive.ubuntu.com/ubuntu bionic InRelease ...
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14 views

ssh from LAN not displaying motd

I have a server running 16.04.5 as a guest VM. The machine is accessible via SSH from both the WAN and the LAN. I have set up two sshd configs: one listening on the LAN interface and and other on the ...
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1answer
53 views

UFW no longer allowing connection when enabled

I have been using openvpn with UFW as a killswitch without issue, but now my internet stops working when I enable UFW after VPN conection is made. Ifconfig shows a tun0. I have been using the ...
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0answers
14 views

Can no longer access samba shared drive from win 7

I don't get it. My samba share drive installed on a 16.04 server used to be accessible through my Windows 7 machine but now, it won't see it. I had mapped the drive but now Windows say it doesn't see ...
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0answers
18 views

Weird internet issue in my Kubuntu

I messed up with the system while trying to install a VPN and one day my wifi stopped working, then after a while I tried to install Windscribe VPN and my whole internet connection stopped working ...
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0answers
15 views

Sporadic problems with IPv4 not available via Ethernet: how to diagnose the culprit?

I have Ubuntu 16.04. From time to time LAN link does not function properly right from the boot. Chrome complains that DNS is not available; I cannot access the router using its IP address (192.168.1....
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0answers
14 views

openvpn client connection issue

I have a ubuntu box behind a router, and I have no access to that router. The router will fail now and then, I don't know why. I can not connect to the internet during the router failure time. ...
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0answers
7 views

How to get interface GETWAY with two WANs

I have 2 ISP connetions, first ISP use mac binding, second use PPPoE /etc/network/interfaces auto lo auto lan allow-hotplug gembird-white allow-hotplug gembird-black iface lo inet loopback iface ...
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0answers
17 views

VPN l2tp issue with VPN site to site : works on Debian, on 16.04, not on 18.04

I did open this question a few weeks ago already : 18.04 VPN l2tp issue - connects but no access to resources I'm still investigating but so far here are my findings : used to work with 16.04 works ...
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9 views

Loosing my Network Connection after waking from suspend 16.04

After most recent update to (version 16.04) Ethernet connection is not reestablishing after waking from suspend. Currently, only a reboot solves the issue. Thanks for your time and help.
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11 views

Firefox not getting connected to Internet

Downloaded Firefox, downloaded Burp Suite. I also changed manually the proxy of firefox with address:hostname and port:8080. Now I also downloaded foxy-proxy an addon and under add new proxy i have ...
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2answers
35 views

Change network mac address using “ip” command

Usually I would be able to change my wifi mac address with the ifconfig command like : ifconfig <iface> hw ether XX:XX:XX:XX:XX:XX Ubuntu have however deprecated ifconfig in behalf of the "ip" ...
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0answers
11 views

Disabling DNSStubListener causes VM cannot resolve domain names

My VM has been created starting from ubuntu-minimal 18.04 realtebo@192.168.1.224:~$ uname -a Linux pihole3.local 4.15.0-32-generic #35-Ubuntu SMP Fri Aug 10 17:58:07 UTC 2018 x86_64 x86_64 x86_64 ...
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0answers
11 views

How to create a local repository over network using ISO image and install packages from this repos on test machine

I want to create a local repository on other machine and install package on my machine from this repository.
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1answer
14 views

KVM Network Bridge with Static IP getting a second ip via DHCP

I did everything as in this answer, I can connect with to the VM via the static IP but I still get an IP from the DHCP server instead of the static one on the interface, how is it possible? How do I ...