[munged]::443 2607:5300:61:541:: - - [23/Jun/2019:03:12:27 +0200] "POST /[munged]: HTTP/1.1" 200 6178 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
[munged]::443 2607:5300:61:541:: - - [23/Jun/2019:03:12:31 +0200] "POST /[munged]: HTTP/1.1" 200 6161 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"

2020-04-15T05:07:09.165880shield sshd\[17707\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ns367460.ip-94-23-26.eu  user=root
2020-04-15T05:07:11.392387shield sshd\[17707\]: Failed password for root from 94.23.26.6 port 50312 ssh2
2020-04-15T05:10:37.050354shield sshd\[18259\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ns367460.ip-94-23-26.eu  user=root
2020-04-15T05:10:38.829943shield sshd\[18259\]: Failed password for root from 94.23.26.6 port 58016 ssh2
2020-04-15T05:14:09.534997shield sshd\[19004\]: Invalid user syslog from 94.23.26.6 port 37396

Apr 15 03:52:27 s158375 sshd[20594]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.179.81

CMS (WordPress or Joomla) login attempt.

[2020-04-15 07:40:19] NOTICE[1170] chan_sip.c: Registration from '' failed for '45.152.182.137:56813' - Wrong password
[2020-04-15 07:40:19] SECURITY[1184] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-04-15T07:40:19.000-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="440",SessionID="0x7f6c08099cc8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.152.182.137/56813",Challenge="2ad802d9",ReceivedChallenge="2ad802d9",ReceivedHash="93b5d19aeaa4065d9b3fd08f9fbd7b98"
[2020-04-15 07:41:03] NOTICE[1170] chan_sip.c: Registration from '' failed for '45.152.182.137:63296' - Wrong password
[2020-04-15 07:41:03] SECURITY[1184] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-04-15T07:41:03.923-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="51",SessionID="0x7f6c081949a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.152.182.137/6
...

Apr 15 13:48:55 ncomp sshd[25940]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.112  user=root
Apr 15 13:48:56 ncomp sshd[25940]: Failed password for root from 222.186.30.112 port 17392 ssh2
Apr 15 13:48:58 ncomp sshd[25940]: Failed password for root from 222.186.30.112 port 17392 ssh2
Apr 15 13:48:55 ncomp sshd[25940]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.112  user=root
Apr 15 13:48:56 ncomp sshd[25940]: Failed password for root from 222.186.30.112 port 17392 ssh2
Apr 15 13:48:58 ncomp sshd[25940]: Failed password for root from 222.186.30.112 port 17392 ssh2

Apr 15 05:26:15 debian sshd[20367]: Invalid user pi from 181.46.201.4 port 50656
Apr 15 05:26:15 debian sshd[20366]: Invalid user pi from 181.46.201.4 port 50654
Apr 15 05:26:16 debian sshd[20366]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=181.46.201.4 
Apr 15 05:26:16 debian sshd[20367]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=181.46.201.4 
Apr 15 05:26:18 debian sshd[20366]: Failed password for invalid user pi from 181.46.201.4 port 50654 ssh2
Apr 15 05:26:18 debian sshd[20367]: Failed password for invalid user pi from 181.46.201.4 port 50656 ssh2
...

Invalid user test from 140.143.196.66 port 55130

2020-04-15T11:39:19.001518shield sshd\[30258\]: Invalid user ehsan from 167.71.48.57 port 50546
2020-04-15T11:39:19.005250shield sshd\[30258\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.71.48.57
2020-04-15T11:39:21.150859shield sshd\[30258\]: Failed password for invalid user ehsan from 167.71.48.57 port 50546 ssh2
2020-04-15T11:43:04.903060shield sshd\[31038\]: Invalid user postgres from 167.71.48.57 port 38208
2020-04-15T11:43:04.906740shield sshd\[31038\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.71.48.57

web-1 [ssh] SSH Attack

Apr 15 05:13:55 XXXXXX sshd[47617]: Invalid user mysqler from 217.138.76.69 port 55554

2020-04-15T11:46:18.280181shield sshd\[31741\]: Invalid user hostmaster from 106.12.151.236 port 48366
2020-04-15T11:46:18.284023shield sshd\[31741\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.151.236
2020-04-15T11:46:20.619939shield sshd\[31741\]: Failed password for invalid user hostmaster from 106.12.151.236 port 48366 ssh2
2020-04-15T11:49:22.923176shield sshd\[32435\]: Invalid user user2 from 106.12.151.236 port 33964
2020-04-15T11:49:22.927373shield sshd\[32435\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.151.236

(sshd) Failed SSH login from 193.77.155.50 (SI/Slovenia/BSN-77-155-50.static.siol.net): 5 in the last 3600 secs

2020-04-15T11:13:29.485827shield sshd\[24768\]: Invalid user epro from 90.180.92.121 port 40800
2020-04-15T11:13:29.489934shield sshd\[24768\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=121.92.broadband13.iol.cz
2020-04-15T11:13:31.518061shield sshd\[24768\]: Failed password for invalid user epro from 90.180.92.121 port 40800 ssh2
2020-04-15T11:17:22.846095shield sshd\[25651\]: Invalid user fn from 90.180.92.121 port 49308
2020-04-15T11:17:22.859492shield sshd\[25651\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=121.92.broadband13.iol.cz

Apr 15 13:05:34 sso sshd[28599]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=64.225.64.215
Apr 15 13:05:36 sso sshd[28599]: Failed password for invalid user developer from 64.225.64.215 port 34066 ssh2
...

"Unauthorized connection attempt on SSHD detected"