Oct 12 07:52:30 venus sshd\[12804\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.30.174.85  user=root
Oct 12 07:52:33 venus sshd\[12804\]: Failed password for root from 123.30.174.85 port 37822 ssh2
Oct 12 08:00:26 venus sshd\[12930\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.30.174.85  user=root
...

port scan and connect, tcp 1433 (ms-sql-s)

Oct 11 22:16:08 wbs sshd\[19483\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.59.80.65  user=root
Oct 11 22:16:10 wbs sshd\[19483\]: Failed password for root from 139.59.80.65 port 48836 ssh2
Oct 11 22:20:26 wbs sshd\[19883\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.59.80.65  user=root
Oct 11 22:20:28 wbs sshd\[19883\]: Failed password for root from 139.59.80.65 port 38194 ssh2
Oct 11 22:24:44 wbs sshd\[20214\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.59.80.65  user=root

Oct 12 10:06:08 relay postfix/smtpd\[29062\]: warning: unknown\[46.38.144.202\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Oct 12 10:07:07 relay postfix/smtpd\[30198\]: warning: unknown\[46.38.144.202\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Oct 12 10:08:07 relay postfix/smtpd\[29155\]: warning: unknown\[46.38.144.202\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Oct 12 10:09:02 relay postfix/smtpd\[10935\]: warning: unknown\[46.38.144.202\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Oct 12 10:10:04 relay postfix/smtpd\[29609\]: warning: unknown\[46.38.144.202\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

Automatic report - Port Scan Attack

191012 10:04:58 \[Warning\] Access denied for user 'root'@'88.214.26.17' \(using password: YES\)
191012 10:07:09 \[Warning\] Access denied for user 'root'@'88.214.26.17' \(using password: YES\)
191012 10:41:55 \[Warning\] Access denied for user 'root'@'88.214.26.17' \(using password: YES\)
...

Oct 11 22:01:17 sachi sshd\[12978\]: Invalid user 1qaz@WSX\#EDC from 190.145.7.42
Oct 11 22:01:17 sachi sshd\[12978\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.145.7.42
Oct 11 22:01:19 sachi sshd\[12978\]: Failed password for invalid user 1qaz@WSX\#EDC from 190.145.7.42 port 49675 ssh2
Oct 11 22:05:45 sachi sshd\[32597\]: Invalid user 123Dallas from 190.145.7.42
Oct 11 22:05:45 sachi sshd\[32597\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.145.7.42

\[2019-10-12 04:16:40\] NOTICE\[1887\] chan_sip.c: Registration from '\' failed for '94.23.207.207:51734' - Wrong password
\[2019-10-12 04:16:40\] SECURITY\[1898\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-10-12T04:16:40.310-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="160",SessionID="0x7fc3ac7f93a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/94.23.207.207/51734",Challenge="70d1124f",ReceivedChallenge="70d1124f",ReceivedHash="c1867a8c1539373d4c56766c34b6a801"
\[2019-10-12 04:21:05\] NOTICE\[1887\] chan_sip.c: Registration from '\' failed for '94.23.207.207:52303' - Wrong password
\[2019-10-12 04:21:05\] SECURITY\[1898\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-10-12T04:21:05.187-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="120",SessionID="0x7fc3ac2ed548",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/94.23.207.207

Unauthorized connection attempt from IP address 116.233.198.195 on Port 445(SMB)

$f2bV_matches

2019-10-12T10:11:42.287936centos sshd\[6779\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.215  user=root
2019-10-12T10:11:44.277627centos sshd\[6779\]: Failed password for root from 222.186.173.215 port 10396 ssh2
2019-10-12T10:11:47.774075centos sshd\[6779\]: Failed password for root from 222.186.173.215 port 10396 ssh2

Unauthorized connection attempt from IP address 203.128.84.60 on Port 445(SMB)

Unauthorized connection attempt from IP address 14.176.231.250 on Port 445(SMB)

Oct 12 13:40:52 gw1 sshd[5987]: Failed password for root from 222.186.173.183 port 14702 ssh2
Oct 12 13:41:11 gw1 sshd[5987]: error: maximum authentication attempts exceeded for root from 222.186.173.183 port 14702 ssh2 [preauth]
...

Oct 12 10:14:01 vps01 sshd[4461]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.59.41.170
Oct 12 10:14:03 vps01 sshd[4461]: Failed password for invalid user Senha1qaz from 139.59.41.170 port 37706 ssh2