Not sure who will use it, but I encountered it myself, because my home is a floating IP.
A software I installed can't detect that the ppp0 network card is an external network, so changing the name can trick him into successfully installing it.
1. File opening
vim /etc/ppp/peers/dsl-provider2. Add ifname eth0 in the last line
plugin rp-pppoe.so
nic-ens3
ifname eth0
My mainframe basically has remote logs set up, and all of them are sent to the log center on the Synology NAS. Among them, there is a Raspberry Pi that is used as a router, and there will be a bunch of sshd verification attempts to log in. Basically, I only allow public key verification, so I don’t want to use passwords to brute force it, but a bunch of logs of verification failures are really good. Hate.
On the new version of RHEL 7/CentOS 7 or Fedora, we can check the status and make adjustments through timedatectl.
Recently, I just started using Google's GCE, and I will record the official Goolge documentation on how to generate a key for the instance to use. The -C comment here will use the name of the logged-in user, and the -t will use rsa.
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