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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 […]

Categories
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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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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Development User Help

Directly-connected network device can be pinged from Windows 10 but not from Debian 10

My setup is as follows: I have a dual boot computer. I have a network device (IP Address 192.168.1.251) directly connected to the PC. I can ping that device, when the PC is booted up with Windows 10. I cannot ping the device, when the PC is booted up with Debian 10. $ ping 192.168.1.251 […]

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Development Linux Ubuntu

Wifi working but ethernet connection is not working (Error: Destination net unreachable)

I had to install a virtual machine on Virtual box. Initially, both Ethernet as well as WiFi were working. Somehow, I messed up the network configurations of virtual machine. After that I was unable to access internet on my host machine (Ubuntu14.04) on Ethernet but WiFi was still working. From some online tutorials, I learnt […]

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Development Linux

Can’t ping default gateway on ubuntu 18.0

I can’t ping my default gateway on ubuntu 18.04. Below are the output of my settings: # ifconfig enp12s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 172.30.149.90 netmask 255.255.255.240 broadcast 172.30.149.95 ether f0:1f:af:3e:73:a3 txqueuelen 1000 (Ethernet) RX packets 2005 bytes 154598 (154.5 KB) RX errors 0 dropped 380 overruns 0 frame 0 TX packets 950 bytes 117982 (117.9 […]

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Development System & Network

Having troubles to connect to AWS RDS MySQL Instance from my laptop

I created an instance for MySQL. I’ve already allowed ALL ip’s in the security group for inbound and outbound. Now I’m doing mysql -h xx.xx.us-east-1.rds.amazonaws.com -u admin -P 3306 -p and after I write the password it gets stuck for a while and then tells me this: ERROR 2003 (HY000): Can’t connect to MySQL server […]