Nov 17 07:26:28 nextcloud sshd\[26631\]: Invalid user host from 84.91.128.47
Nov 17 07:26:28 nextcloud sshd\[26631\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=84.91.128.47
Nov 17 07:26:30 nextcloud sshd\[26631\]: Failed password for invalid user host from 84.91.128.47 port 54018 ssh2
...

Masscan Port Scanning Tool Detection (56115) PA

\[2019-11-17 04:05:03\] NOTICE\[2601\] chan_sip.c: Registration from '"179" \' failed for '45.143.221.15:5122' - Wrong password
\[2019-11-17 04:05:03\] SECURITY\[2634\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-11-17T04:05:03.205-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="179",SessionID="0x7fdf2c946ac8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.221.15/5122",Challenge="676bdb09",ReceivedChallenge="676bdb09",ReceivedHash="7a1b3494934fc23db8169dd0dd4988c7"
\[2019-11-17 04:05:03\] NOTICE\[2601\] chan_sip.c: Registration from '"179" \' failed for '45.143.221.15:5122' - Wrong password
\[2019-11-17 04:05:03\] SECURITY\[2634\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-11-17T04:05:03.337-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="179",SessionID="0x7fdf2c3f5928",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.1

Nov 17 07:53:27 dedicated sshd[19069]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.30.236.149  user=root
Nov 17 07:53:29 dedicated sshd[19069]: Failed password for root from 123.30.236.149 port 59954 ssh2

MultiHost/MultiPort Probe, Scan, Hack -

Nov 17 09:35:02 vpn01 sshd[31738]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=119.29.170.120
Nov 17 09:35:03 vpn01 sshd[31738]: Failed password for invalid user frederic from 119.29.170.120 port 54580 ssh2
...

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Automatic report - Port Scan Attack

11/17/2019-04:09:31.670913 77.247.110.40 Protocol: 17 ET SCAN Sipvicious Scan

Nov 16 22:52:21 php1 sshd\[26856\]: Invalid user becks from 129.204.95.39
Nov 16 22:52:21 php1 sshd\[26856\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.204.95.39
Nov 16 22:52:23 php1 sshd\[26856\]: Failed password for invalid user becks from 129.204.95.39 port 46284 ssh2
Nov 16 22:58:06 php1 sshd\[27353\]: Invalid user fblokk from 129.204.95.39
Nov 16 22:58:06 php1 sshd\[27353\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.204.95.39

185.143.221.62 was recorded 9 times by 6 hosts attempting to connect to the following ports: 3389,3390. Incident counter (4h, 24h, all-time): 9, 24, 385

$f2bV_matches

Nov 16 22:39:44 sachi sshd\[15549\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.236.61.100  user=root
Nov 16 22:39:45 sachi sshd\[15549\]: Failed password for root from 104.236.61.100 port 58379 ssh2
Nov 16 22:43:54 sachi sshd\[15928\]: Invalid user burrill from 104.236.61.100
Nov 16 22:43:54 sachi sshd\[15928\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.236.61.100
Nov 16 22:43:55 sachi sshd\[15928\]: Failed password for invalid user burrill from 104.236.61.100 port 49122 ssh2

172.105.4.63 was recorded 6 times by 6 hosts attempting to connect to the following ports: 194. Incident counter (4h, 24h, all-time): 6, 13, 64

Nov 17 05:21:05 ws19vmsma01 sshd[107440]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=99.29.90.25
Nov 17 05:21:08 ws19vmsma01 sshd[107440]: Failed password for invalid user jaiza from 99.29.90.25 port 36309 ssh2
...