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Question apache2 error.log have changed, fail2ban not working anymore

millerbln

New Pleskian
Server operating system version
Ubuntu 24.04 x86_64
Plesk version and microupdate number
Plesk Obsidian 18.0.70.1
hello,

at may 15 this year apache2 error.log have a new log Format
at my Server (may be psa changed it) .

before:
[Wed May 14 22:56:43.538952 2025] [security2:error] [pid 230680:tid 126620308326080] [client xx.138.yy.24:0] [client xx.138.yy.24] ModSecurity: Access denied with ... .. .
(two times 'client')

and now:
[Thu May 15 02:48:54.818669 2025] [security2:error] [pid 324623:tid 127982140110528] [client 64.xxx.249.yyy:0] ModSecurity: Access denied with .. .. .
(only 1 times 'client')

the fileregex is:
failregex = ^.*\[client <HOST>\] ModSecurity: Access denied with code(.*)

i have changed the failregex several times, also:
failregex = ^.*\[client (?::::0f{5,7}:)?(?P<host>\:\0\S+)\] ModSecurity: Access denied with code(.*)

but nothing helps ;-(

the problem is the format of the ip adress .. after the address is ':0' .

how i can change the failregex, that it is working again ??

regards
millerbln
 
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