How to view, modify, and delete SSH

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This is a supplementary blog , Main article in here

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see SSH

CentOS 7 and Ubuntu18.04
stay /root/.ssh Under the table of contents , Pictured

This is configured SSH The catalog of

Four files mean
authorized_keys ： Store the public key of the authorized password free login host
id_rsa ： Private key
id_ras.pub： Public key
know_host： Record ssh The public key of the accessed host （public key）

Delete SSH

Directly delete all files in this directory
/root/.ssh rm -rf ./*
Then reconfigure

To configure SSH operation , spot here

modify SSH

If you want to delete the access permission of a machine （ Take back the key ）
You can visit authorized_keys Delete the corresponding contents of the file