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...f. What I don't understand is why doesn't lines A or B have a built in regex line? This goes back to not knowing the method that generates the error message in part 1. Also, can I update the regex in asterisk.conf, From: NOTICE.* .*: Failed to authenticate user .*@ <mailto:.*@%3cHOST%3e.*> <HOST>.* To: NOTICE.* .*: Failed to authenticate user .* It should ban both A and B, along with the original Regex line that I modified. Question is, would this present a problem under normal circumstances? I know when the line comes up with my.asterisk.server.ip it will g...

Hello, fail2ban does not ban offending IP. NOTICE[29784] chan_sip.c: Registration from '"user3"<sip:1005 at asterisk-ip:5060>' failed for 'offending-IP:53417' - Wrong password NOTICE[29784] chan_sip.c: Registration from '"user3"<sip:1005 at asterisk-ip:5060>' failed for ?offending-IP:53911' - Wrong password systemctl status

...HOST> failed to authenticate as '.*'$ NOTICE.* .*: No registration for peer '.*' \(from <HOST>\) NOTICE.* .*: Host <HOST> failed MD5 authentication for '.*' (.*) NOTICE.* .*: Failed to authenticate user .*@ <mailto:.*@%3cHOST%3e.*> <HOST>.* NOTICE.* .*: Sending fake auth rejection for device .*\<sip:.*\@ <sip:.*\@%3cHOST> <HOST>\>;tag=.* NOTICE.* .*: Registration from '\".*\".*' failed for '<HOST>' - No matching peer found...