Oct  6 04:41:38 mail sshd\[48466\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.150.36  user=root
...

Oct  6 13:18:18 srv3 sshd\[28121\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.220.101.9  user=root
Oct  6 13:18:20 srv3 sshd\[28121\]: Failed password for root from 185.220.101.9 port 22304 ssh2
Oct  6 13:18:23 srv3 sshd\[28121\]: Failed password for root from 185.220.101.9 port 22304 ssh2
Oct  6 13:18:25 srv3 sshd\[28121\]: Failed password for root from 185.220.101.9 port 22304 ssh2
Oct  6 13:18:27 srv3 sshd\[28121\]: Failed password for root from 185.220.101.9 port 22304 ssh2
...

Oct  6 14:03:35 web8 sshd\[20661\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.0.200.227  user=root
Oct  6 14:03:37 web8 sshd\[20661\]: Failed password for root from 107.0.200.227 port 41028 ssh2
Oct  6 14:07:20 web8 sshd\[22405\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.0.200.227  user=root
Oct  6 14:07:22 web8 sshd\[22405\]: Failed password for root from 107.0.200.227 port 46880 ssh2
Oct  6 14:11:10 web8 sshd\[24173\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.0.200.227  user=root

Invalid user nagios from 212.83.186.26 port 59318

(eximsyntax) Exim syntax errors from 113.172.172.228 (VN/Vietnam/static.vnpt.vn): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-10-06 00:07:41 SMTP call from [113.172.172.228] dropped: too many syntax or protocol errors (last command was "?\034?\032?\027?\031?\034?\033?\030?\032?\026?\016?\r?\v?\f?	?")

2020-10-06 14:06:47.881126-0500  localhost sshd[48854]: Failed password for root from 139.59.129.59 port 35200 ssh2

Oct  6 07:24:09  sshd\[6062\]: User root from 62.234.118.36 not allowed because not listed in AllowUsersOct  6 07:24:11  sshd\[6062\]: Failed password for invalid user root from 62.234.118.36 port 35744 ssh2
...

Oct  6 20:04:59 router sshd[24774]: Failed password for root from 157.230.2.208 port 60038 ssh2
Oct  6 20:08:44 router sshd[24842]: Failed password for root from 157.230.2.208 port 39040 ssh2
...

[N10.H2.VM2] Port Scanner Detected Blocked by UFW

Oct  6 04:24:28 host sshd[962]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.62.6.114  user=root
Oct  6 04:24:30 host sshd[962]: Failed password for root from 178.62.6.114 port 54836 ssh2
...

Oct 6 06:20:32 - [Firewall Log-PORT SCAN] TCP Packet - 141.98.81.182 -->

[2020-10-06 09:15:20] NOTICE[1182] chan_sip.c: Registration from '"106" ' failed for '104.131.105.31:5326' - Wrong password
[2020-10-06 09:15:20] SECURITY[1204] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-06T09:15:20.263-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="106",SessionID="0x7f22f854d238",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/104.131.105.31/5326",Challenge="5c55fa14",ReceivedChallenge="5c55fa14",ReceivedHash="3454a3e3801b3f3bddaf6b8efb1363ed"
[2020-10-06 09:15:20] NOTICE[1182] chan_sip.c: Registration from '"106" ' failed for '104.131.105.31:5326' - Wrong password
[2020-10-06 09:15:20] SECURITY[1204] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-06T09:15:20.344-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="106",SessionID="0x7f22f840cf98",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/104.131.105.31/53
...

Failed password for root from 154.194.2.70 port 45170 ssh2
Failed password for root from 154.194.2.70 port 52332 ssh2

 TCP (SYN) 46.209.230.140:59448 -> port 23, len 44

Oct  6 17:38:08 eventyay sshd[15556]: Failed password for root from 31.129.173.162 port 59430 ssh2
Oct  6 17:41:58 eventyay sshd[15678]: Failed password for root from 31.129.173.162 port 36294 ssh2
...