May 31 11:09:23 mellenthin sshd[26118]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.55.88.16  user=root
May 31 11:09:25 mellenthin sshd[26118]: Failed password for invalid user root from 45.55.88.16 port 39192 ssh2

May 31 04:49:20 Tower sshd[25448]: Connection from 106.13.119.163 port 45872 on 192.168.10.220 port 22 rdomain ""
May 31 04:49:23 Tower sshd[25448]: Failed password for root from 106.13.119.163 port 45872 ssh2
May 31 04:49:24 Tower sshd[25448]: Received disconnect from 106.13.119.163 port 45872:11: Bye Bye [preauth]
May 31 04:49:24 Tower sshd[25448]: Disconnected from authenticating user root 106.13.119.163 port 45872 [preauth]

k+ssh-bruteforce

May 29 14:36:34 server6 sshd[24088]: reveeclipse mapping checking getaddrinfo for 179.183.144.119.dynamic.adsl.gvt.net.br [179.183.144.119] failed - POSSIBLE BREAK-IN ATTEMPT!
May 29 14:36:36 server6 sshd[24088]: Failed password for invalid user jfagan from 179.183.144.119 port 42994 ssh2
May 29 14:36:37 server6 sshd[24088]: Received disconnect from 179.183.144.119: 11: Bye Bye [preauth]
May 29 14:40:38 server6 sshd[27951]: reveeclipse mapping checking getaddrinfo for 179.183.144.119.dynamic.adsl.gvt.net.br [179.183.144.119] failed - POSSIBLE BREAK-IN ATTEMPT!
May 29 14:40:40 server6 sshd[27951]: Failed password for invalid user lynx from 179.183.144.119 port 40336 ssh2
May 29 14:40:40 server6 sshd[27951]: Received disconnect from 179.183.144.119: 11: Bye Bye [preauth]
May 29 14:43:35 server6 sshd[29936]: reveeclipse mapping checking getaddrinfo for 179.183.144.119.dynamic.adsl.gvt.net.br [179.183.144.119] failed - POSSIBLE BREAK-IN ATTEMPT!
May 29 14:43:35 server6 sshd........
-------------------------------

This client attempted to login to an administrator account on a Website, or abused from another resource.

[2020-05-31 04:54:42] NOTICE[1157] chan_sip.c: Registration from '"166"' failed for '212.129.23.120:45932' - Wrong password
[2020-05-31 04:54:42] SECURITY[1173] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-05-31T04:54:42.446-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="166",SessionID="0x7f5f1039ca78",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/212.129.23.120/45932",Challenge="1b08bf46",ReceivedChallenge="1b08bf46",ReceivedHash="9a351d1db14a5c7223c512f0e6b4c4a3"
[2020-05-31 04:54:42] NOTICE[1157] chan_sip.c: Registration from '"167"' failed for '212.129.23.120:29664' - Wrong password
[2020-05-31 04:54:42] SECURITY[1173] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-05-31T04:54:42.466-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="167",SessionID="0x7f5f10bba3a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/212.
...

Hits on port : 5555

May 31 09:22:14 legacy sshd[18295]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.179.87.84
May 31 09:22:15 legacy sshd[18295]: Failed password for invalid user steam from 52.179.87.84 port 45590 ssh2
May 31 09:31:44 legacy sshd[18514]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.179.87.84
...

$f2bV_matches

May 31 11:11:09 ns382633 sshd\[16134\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=23.97.180.45  user=root
May 31 11:11:11 ns382633 sshd\[16134\]: Failed password for root from 23.97.180.45 port 53540 ssh2
May 31 11:19:29 ns382633 sshd\[17433\]: Invalid user menashi from 23.97.180.45 port 54342
May 31 11:19:29 ns382633 sshd\[17433\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=23.97.180.45
May 31 11:19:32 ns382633 sshd\[17433\]: Failed password for invalid user menashi from 23.97.180.45 port 54342 ssh2

[2020-05-31 05:47:10] NOTICE[1157] chan_sip.c: Registration from '' failed for '185.147.215.13:54512' - Wrong password
[2020-05-31 05:47:10] SECURITY[1173] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-05-31T05:47:10.347-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="9464",SessionID="0x7f5f100266a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.147.215.13/54512",Challenge="2e61340a",ReceivedChallenge="2e61340a",ReceivedHash="041c3e0763ae72d358085bd8847b807d"
[2020-05-31 05:52:37] NOTICE[1157] chan_sip.c: Registration from '' failed for '185.147.215.13:59145' - Wrong password
[2020-05-31 05:52:37] SECURITY[1173] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-05-31T05:52:37.685-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="8013",SessionID="0x7f5f1039ca78",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.147.21
...

May 31 10:35:46 ms-srv sshd[20505]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=1.202.185.69
May 31 10:35:48 ms-srv sshd[20505]: Failed password for invalid user deploy from 1.202.185.69 port 46668 ssh2

Too many connections or unauthorized access detected from Arctic banned ip

May 31 11:00:09 inter-technics sshd[10253]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.92.89.30  user=root
May 31 11:00:12 inter-technics sshd[10253]: Failed password for root from 120.92.89.30 port 45186 ssh2
May 31 11:03:38 inter-technics sshd[10409]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.92.89.30  user=root
May 31 11:03:40 inter-technics sshd[10409]: Failed password for root from 120.92.89.30 port 23026 ssh2
May 31 11:07:19 inter-technics sshd[10694]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.92.89.30  user=root
May 31 11:07:21 inter-technics sshd[10694]: Failed password for root from 120.92.89.30 port 65384 ssh2
...

SMB Server BruteForce Attack