FAIL2BAN - Filter.d - http-crlf

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! Should be customized to your needs !

Filter.d

[Definition]
# http-crlf.conf
# HTTP Response Splitting (CRLF Injection)
# Matches attempts to inject headers or CRLF sequences into the response
           failregex = ^<HOST>.*(\r\n|\n\r|\r|\n).*Host:.*$

ignoreregex =

Jail.conf

[http-crlf]
enabled  = true
banaction = %(banaction_allports)s
logpath  = /var/log/nginx/*.access.log
maxretry = 1
bantime  = -1
findtime = 3d
backend = polling