Unauthorized connection attempt detected from IP address 50.43.6.35 to port 2220 [J]

Feb  6 05:56:35 MK-Soft-VM8 sshd[26655]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.51.98.226 
Feb  6 05:56:37 MK-Soft-VM8 sshd[26655]: Failed password for invalid user uzx from 202.51.98.226 port 41768 ssh2
...

IP blocked

Feb  6 05:57:08 vps647732 sshd[15489]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.101.67.173
Feb  6 05:57:10 vps647732 sshd[15489]: Failed password for invalid user admin2 from 175.101.67.173 port 57985 ssh2
...

Unauthorized connection attempt detected from IP address 139.59.70.106 to port 2220 [J]

Feb  6 10:22:45 gw1 sshd[20318]: Failed password for root from 49.88.112.55 port 29319 ssh2
Feb  6 10:22:58 gw1 sshd[20318]: error: maximum authentication attempts exceeded for root from 49.88.112.55 port 29319 ssh2 [preauth]
...

Feb  6 05:38:52 web8 sshd\[6571\]: Invalid user yrt from 46.101.72.145
Feb  6 05:38:52 web8 sshd\[6571\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.101.72.145
Feb  6 05:38:53 web8 sshd\[6571\]: Failed password for invalid user yrt from 46.101.72.145 port 44528 ssh2
Feb  6 05:41:00 web8 sshd\[7777\]: Invalid user ngw from 46.101.72.145
Feb  6 05:41:00 web8 sshd\[7777\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.101.72.145

Feb  6 06:54:22 lukav-desktop sshd\[519\]: Invalid user pei from 178.33.67.12
Feb  6 06:54:22 lukav-desktop sshd\[519\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.33.67.12
Feb  6 06:54:24 lukav-desktop sshd\[519\]: Failed password for invalid user pei from 178.33.67.12 port 52262 ssh2
Feb  6 06:57:08 lukav-desktop sshd\[1854\]: Invalid user epp from 178.33.67.12
Feb  6 06:57:08 lukav-desktop sshd\[1854\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.33.67.12

[2020-02-06 00:26:34] NOTICE[1148][C-000069f7] chan_sip.c: Call from '' (37.187.205.90:50772) to extension '6011972970597275552' rejected because extension not found in context 'public'.
[2020-02-06 00:26:34] SECURITY[1163] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-02-06T00:26:34.827-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="6011972970597275552",SessionID="0x7fd82c31abc8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.187.205.90/50772",ACLName="no_extension_match"
[2020-02-06 00:29:56] NOTICE[1148][C-000069fa] chan_sip.c: Call from '' (37.187.205.90:65148) to extension '5011970970597275552' rejected because extension not found in context 'public'.
[2020-02-06 00:29:56] SECURITY[1163] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-02-06T00:29:56.818-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="5011970970597275552",SessionID="0x7fd82c307128",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAd
...

Feb  6 02:15:21 firewall sshd[27780]: Failed password for root from 222.186.30.187 port 48835 ssh2
Feb  6 02:15:27 firewall sshd[27780]: Failed password for root from 222.186.30.187 port 48835 ssh2
Feb  6 02:15:30 firewall sshd[27780]: Failed password for root from 222.186.30.187 port 48835 ssh2
...

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02/06/2020-00:34:20.776827 185.156.73.52 Protocol: 6 ET SCAN NMAP -sS window 1024

2020-02-06T05:13:56.308312abusebot-4.cloudsearch.cf sshd[21073]: Invalid user admin from 104.236.131.54 port 59051
2020-02-06T05:13:56.314500abusebot-4.cloudsearch.cf sshd[21073]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.236.131.54
2020-02-06T05:13:56.308312abusebot-4.cloudsearch.cf sshd[21073]: Invalid user admin from 104.236.131.54 port 59051
2020-02-06T05:13:58.225263abusebot-4.cloudsearch.cf sshd[21073]: Failed password for invalid user admin from 104.236.131.54 port 59051 ssh2
2020-02-06T05:15:43.843932abusebot-4.cloudsearch.cf sshd[21170]: Invalid user admin from 104.236.131.54 port 37843
2020-02-06T05:15:43.850563abusebot-4.cloudsearch.cf sshd[21170]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.236.131.54
2020-02-06T05:15:43.843932abusebot-4.cloudsearch.cf sshd[21170]: Invalid user admin from 104.236.131.54 port 37843
2020-02-06T05:15:46.453418abusebot-4.cloudsearch.cf sshd[21170]:
...

Feb  6 00:30:27 plusreed sshd[7035]: Invalid user nen from 106.12.33.50
...

Feb  6 07:14:26 tuotantolaitos sshd[5714]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.48.34.74
Feb  6 07:14:28 tuotantolaitos sshd[5714]: Failed password for invalid user msx from 183.48.34.74 port 36234 ssh2
...