Linux – Networking

How to Resolve RTNETLINK answers: Invalid argument Error adding default gateway

by Ed Chen
December 29, 2016May 27, 2018

RTNETLINK answers: Invalid argument When I restarted the newly configured network interface, it returned error rtnetlink answers: invalid argument like the following: [root@test ~]# service… Read More »

How To Bind Multiple IP Addresses to One Network Interface on Enterprise Linux 7

by Ed Chen
August 18, 2015March 30, 2018

Here are the steps that you can add more IP address into the network card.Copy the configuration file of eth0 as eth0:0[root@test ~]# cp -p… Read More »

How to Open Ports and Survives from Reboots

by Ed Chen
August 19, 2014December 11, 2022

Open Port There're differences to open port between Enterprise Linux (EL) 6 and 7, although they are IPTABLES operating underneath. EL6 uses iptables to manage… Read More »

/etc/hosts Does Not Work on Linux or Windows?

by Ed Chen
July 23, 2014February 13, 2023

/etc/hosts or C:WindowsSystem32driversetchosts is a file for resolving the domain name in a local manner. If you set it incorrectly, you will see no effects… Read More »

How to Add DNS on Enterprise Linux 6.5

by Ed Chen
July 15, 2014November 22, 2022

Adding a nameserver to a Enterprise Linux 6.5 is similar with changing nameserver:How to Change DNS on Enterprise Linux 6.5Therefore, I will keep this post… Read More »