37215/tcp 23/tcp...
[2020-09-12/13]4pkt,2pt.(tcp)

[Sun Sep 13 23:59:41.973617 2020] [:error] [pid 32346:tid 140175820666624] [client 115.99.110.188:44240] [client 115.99.110.188] ModSecurity: Access denied with code 403 (phase 1). Match of "rx ^%{tx.allowed_request_content_type_charset}$" against "TX:1" required. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "944"] [id "920480"] [msg "Request content type charset is not allowed by policy"] [data "\\x22utf-8\\x22"] [severity "CRITICAL"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/CONTENT_TYPE_CHARSET"] [tag "WASCTC/WASC-20"] [tag "OWASP_TOP_10/A1"] [tag "OWASP_AppSensor/EE2"] [tag "PCI/12.1"] [hostname "103.27.207.197"] [uri "/HNAP1/"] [unique_id "X15P-TGicopo-RlqvxhcuQAAADo"]
...

SSH/22 MH Probe, BF, Hack -

Sep 14 02:31:38 propaganda sshd[40579]: Connection from 18.141.56.216 port 58936 on 10.0.0.161 port 22 rdomain ""
Sep 14 02:31:39 propaganda sshd[40579]: Connection closed by 18.141.56.216 port 58936 [preauth]

1600016363 - 09/13/2020 18:59:23 Host: 156.215.221.17/156.215.221.17 Port: 445 TCP Blocked

Sep 14 12:56:26 ns3164893 sshd[8121]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=172.92.228.50  user=root
Sep 14 12:56:28 ns3164893 sshd[8121]: Failed password for root from 172.92.228.50 port 52348 ssh2
...

$f2bV_matches

firewall-block, port(s): 47808/udp

Sep 14 13:06:40 ns382633 sshd\[19435\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.231.71.157  user=root
Sep 14 13:06:42 ns382633 sshd\[19435\]: Failed password for root from 111.231.71.157 port 59754 ssh2
Sep 14 13:25:04 ns382633 sshd\[23015\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.231.71.157  user=root
Sep 14 13:25:07 ns382633 sshd\[23015\]: Failed password for root from 111.231.71.157 port 39710 ssh2
Sep 14 13:33:33 ns382633 sshd\[24865\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.231.71.157  user=root

Brute force attack stopped by firewall

Sep 14 04:31:23 scw-tender-jepsen sshd[19529]: Failed password for root from 188.214.104.146 port 60897 ssh2
Sep 14 04:31:25 scw-tender-jepsen sshd[19529]: Failed password for root from 188.214.104.146 port 60897 ssh2

(sshd) Failed SSH login from 180.89.58.27 (CN/China/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Sep 14 06:48:15 server sshd[27813]: Invalid user etms from 180.89.58.27 port 37419
Sep 14 06:48:17 server sshd[27813]: Failed password for invalid user etms from 180.89.58.27 port 37419 ssh2
Sep 14 06:54:00 server sshd[29657]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.89.58.27  user=root
Sep 14 06:54:02 server sshd[29657]: Failed password for root from 180.89.58.27 port 9503 ssh2
Sep 14 06:58:42 server sshd[30847]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.89.58.27  user=root

Sep 14 06:41:56 vm1 sshd[28715]: Failed password for root from 145.239.85.228 port 51152 ssh2
...

 TCP (SYN) 196.218.133.199:50321 -> port 23, len 44

2020-09-14T04:19:24.769082morrigan.ad5gb.com sshd[1891364]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.99.180.135  user=root
2020-09-14T04:19:26.470536morrigan.ad5gb.com sshd[1891364]: Failed password for root from 42.99.180.135 port 39138 ssh2