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Technical notes, renewable energy projects, useful fixes and updates.

Computing

DHCP – DORA

DHCP Process Discover – Client sends a broadcast Discover Offer – Server replies with an offer of IP details Request – Client has received…

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Computing

SSH Notifications via email

IP=”$(echo $SSH_CONNECTION | cut -d ” ” -f 1)”HOSTNAME=$(hostname)NOW=$(date +”%e %b %Y, %a %r”) echo ‘Someone from ‘$IP’ logged into ‘$HOSTNAME’ on ‘$NOW’.’ |…

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Computing

Function of the Mikrotik Firewall

Stop unathorised access Block unwanted ports Classify and mark connections and packets for QOS or Routing Policy Firewall Functions: Filter packets using filter rules…

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