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Linux Mastering Development Ubuntu

Ubuntu 18.04 Ethernet is recognized and connected but internet is not working

Wifi works but the Ethernet wired connection does not. The same cable on the same computer on the same Ethernet port works perfectly under windows 10. In Xubuntu 18.04 I get no internet. The system recognizes the Ethernet cable as soon as I plug it. And the network manager shows that the computer is connected […]

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Linux Mastering Development Ubuntu

Ubuntu 18.04 Ethernet is recognized and connected but internet is not working

Wifi works but the Ethernet wired connection does not. The same cable on the same computer on the same Ethernet port works perfectly under windows 10. In Xubuntu 18.04 I get no internet. The system recognizes the Ethernet cable as soon as I plug it. And the network manager shows that the computer is connected […]

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Linux Mastering Development Ubuntu

Network problems: no data receivable from all Ubuntu Devices

The following is my problem: With my two Ubuntu devices, I am unable to get data from the internet. I can ping my router successfully, but pinging other ips like 8.8.8.8 does not work. I am connected via LAN. The problem occurs only with the network I am with right now, in other networks it […]

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Linux Mastering Development

Cannot post request to localdomain 127.0.0.1:80 in RHEL7 while setting up Mainflux

I am trying to setup Mainflux on my Linux RHEL 7 Server. While doing mainflux-cli provision test it shows an error as: Post http://localhost/users: dial tcp 127.0.0.1:80: connect: connection refused I have tried following: Wget: wget 127.0.0.1 –2020-04-02 09:52:01– http://127.0.0.1/ Connecting to 127.0.0.1:80… failed: Connection refused. Traceroute: traceroute 127.0.0.1 traceroute to 127.0.0.1 (127.0.0.1), 30 hops […]

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User Help

Configure static IP-adress to connect to device in subnet

I have a Dragino-Yun v2.4-shield, which is a device that can be connected with an Arduino to give it networking-capabilities. It has An Ethernet-Port and Wifi. I don’t have a wifi-antenna at the moment so i tried connecting to it via the Ethernet-Port. According to the manual, the address 172.31.255.254 is assigned to the Ethernet-Port […]

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Mastering Development System & Network

Configure static IP-adress to connect to device in subnet

I have a Dragino-Yun v2.4-shield, which is a device that can be connected with an Arduino to give it networking-capabilities. It has An Ethernet-Port and Wifi. I don’t have a wifi-antenna at the moment so i tried connecting to it via the Ethernet-Port. According to the manual, the address 172.31.255.254 is assigned to the Ethernet-Port […]

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Linux Mastering Development Ubuntu

SSH Windows 10 VM from Ubuntu (2 different computers)

Suppose I have two computers. The main OS for the first computer is Ubuntu. On the other computer, there is a virtual machine installed with Windows. I am trying to access that VM from my computer with SSH, but nothing is happening. (base) ┌─╼ [~] └────╼ ping 192.168.X.X PING 192.168.0.111 (192.168.X.X) 56(84) bytes of data. […]

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Linux Mastering Development

Can’t configure linux routing, can’t ping outside resources

I’ve setup a Linux CentOS 7 virtual machine inside VirtualBox with ‘host-only network interface’. Thus I now have a Linux guest with one eth interface and a Windows 10 host with three interfaces: ethernet with access to Internet, TAP-VPN Connection and VirtualBox Interface. I can ping my linux guest from the host machine but not […]

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Mastering Development System & Network

Linux VLANs with single-port NIC – unable to get connectivity to other hosts in VLAN?

I have a 4-node Proxmox cluster (Debian Buster). I’ve been banging my head against the wall trying to get the VLAN configuration working. Essentially, I have a single NIC port (100Gbase-LR4). I want to split it up – primary VM traffic goes over VLAN ID 12. (Switch ports have been configured with VLAN 12 as […]

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Development Linux Ubuntu

Cannont connect to the internet through an ethernet switch

I am in the process of moving my computers to Ubuntu. Things are going pretty well on my first installation, but during the process I began to have serious internet connection problems. I know this problem has nothing to do with the O/S, because I have the problem with any PC on my network, regardless […]