Character Generator Protocol: Difference between revisions

Revision as of 23:28, 16 June 2025

Latest revision as of 20:27, 13 August 2025

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| osilayer = [[Application layer]] (7)

| ports = tcp/19, udp/19

| rfcs = {{IETF RFC|864|plainlink=yes}}

| hardware =

}}

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== Visual output simulation ==

For security reasons, most modern machines should have CHARGEN services disabled. The following is a Linux bash script that will simulate the visual appearance of the CHARGEN service in the terminal window. The script can be stopped by pressing {{Keypress|Ctrl + |C}}.
<syntaxhighlight lang="bash">

strg=""; for n in {32..126}; do c=`printf '%x' $n | xxd -r -p`; strg=${strg}${c}; done; strg=${strg}${strg}; n=0; while :; do m=n%95; echo "${strg:m:72}"; n=$((n+1)); sleep .1; done;

</syntaxhighlight>