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tips

    • OSI modelOSI_model_LAN
    • How the web works: HTTP and CGI explained
    • IPtables frequently used rules
    • Unix Signals
    • PostgreSQL useful commands
    • The System Design Primer
    • Pyhton3 memo
    • Connect to the server behind bastino with key forward ssh -o ProxyCommand=’ssh -W %h:%p user@xxx.xxx.xxx.xxx -i ~/.ssh/key.pem’ -i ~/.ssh/tools-mgt.pem user@yyy.yyy.yyy.yyy xxx.xxx.xxx.xxx – bastion server IP, yyy.yyy.yyy.yyy – server IP
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