Sep  9 02:29:28 ny01 sshd[22030]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=137.116.138.221
Sep  9 02:29:30 ny01 sshd[22030]: Failed password for invalid user test from 137.116.138.221 port 33403 ssh2
Sep  9 02:37:14 ny01 sshd[23342]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=137.116.138.221

Sep  8 19:56:09 hiderm sshd\[15552\]: Invalid user 123456 from 104.248.87.201
Sep  8 19:56:09 hiderm sshd\[15552\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.87.201
Sep  8 19:56:11 hiderm sshd\[15552\]: Failed password for invalid user 123456 from 104.248.87.201 port 60980 ssh2
Sep  8 20:02:20 hiderm sshd\[16181\]: Invalid user 123 from 104.248.87.201
Sep  8 20:02:20 hiderm sshd\[16181\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.87.201

\[2019-09-09 07:38:37\] NOTICE\[9368\] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '\' failed for '5.62.41.170:13190' \(callid: 1203170097-675946563-208547998\) - Failed to authenticate
\[2019-09-09 07:38:37\] SECURITY\[1715\] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2019-09-09T07:38:37.048+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="\",SessionID="1203170097-675946563-208547998",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/5.62.41.170/13190",Challenge="1568007516/caeaab6b3dc8e42027bf21bcce7af2a7",Response="6285afb57c0c154f3ebf9a6c9ab9cf39",ExpectedResponse=""
\[2019-09-09 07:38:37\] NOTICE\[1168\] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '\' failed for '5.62.41.170:13190' \(callid: 1203170097-675946563-208547998\) - Failed to authenticate
\[2019-09-09 07:38:37\] SECURITY\[1715\] res_security_log.c: SecurityEvent="ChallengeResponseFailed",

2019-09-09T05:45:46.297634abusebot-6.cloudsearch.cf sshd\[4138\]: Invalid user ftpuser from 182.61.42.234 port 39698

MultiHost/MultiPort Probe, Scan, Hack -

Sep  9 05:18:23 localhost sshd\[109959\]: Invalid user temp123 from 66.70.181.113 port 60256
Sep  9 05:18:23 localhost sshd\[109959\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=66.70.181.113
Sep  9 05:18:25 localhost sshd\[109959\]: Failed password for invalid user temp123 from 66.70.181.113 port 60256 ssh2
Sep  9 05:23:45 localhost sshd\[110144\]: Invalid user steamsteam from 66.70.181.113 port 36810
Sep  9 05:23:45 localhost sshd\[110144\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=66.70.181.113
...

firewall-block, port(s): 23/tcp

Sep  9 08:04:40 meumeu sshd[28098]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=171.244.36.103 
Sep  9 08:04:43 meumeu sshd[28098]: Failed password for invalid user 1 from 171.244.36.103 port 38068 ssh2
Sep  9 08:11:52 meumeu sshd[28962]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=171.244.36.103 
...

Sep  8 20:05:36 hanapaa sshd\[19396\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.52.124  user=root
Sep  8 20:05:38 hanapaa sshd\[19396\]: Failed password for root from 222.186.52.124 port 23028 ssh2
Sep  8 20:05:41 hanapaa sshd\[19396\]: Failed password for root from 222.186.52.124 port 23028 ssh2
Sep  8 20:05:43 hanapaa sshd\[19396\]: Failed password for root from 222.186.52.124 port 23028 ssh2
Sep  8 20:05:44 hanapaa sshd\[19421\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.52.124  user=root

MultiHost/MultiPort Probe, Scan, Hack -

Sep  8 19:42:49 php2 sshd\[32135\]: Invalid user nagios from 114.67.69.88
Sep  8 19:42:49 php2 sshd\[32135\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.67.69.88
Sep  8 19:42:51 php2 sshd\[32135\]: Failed password for invalid user nagios from 114.67.69.88 port 60714 ssh2
Sep  8 19:46:41 php2 sshd\[716\]: Invalid user temp from 114.67.69.88
Sep  8 19:46:41 php2 sshd\[716\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.67.69.88

Sep  9 07:43:16 SilenceServices sshd[32491]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.39.150.116
Sep  9 07:43:19 SilenceServices sshd[32491]: Failed password for invalid user test from 54.39.150.116 port 46910 ssh2
Sep  9 07:49:01 SilenceServices sshd[2252]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.39.150.116

Sep  9 08:06:03 s64-1 sshd[31840]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=14.6.200.22
Sep  9 08:06:04 s64-1 sshd[31840]: Failed password for invalid user developer from 14.6.200.22 port 45018 ssh2
Sep  9 08:13:11 s64-1 sshd[32018]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=14.6.200.22
...

Sep  8 20:04:47 kapalua sshd\[1205\]: Invalid user 123123 from 107.172.46.82
Sep  8 20:04:47 kapalua sshd\[1205\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.172.46.82
Sep  8 20:04:49 kapalua sshd\[1205\]: Failed password for invalid user 123123 from 107.172.46.82 port 39730 ssh2
Sep  8 20:12:13 kapalua sshd\[2028\]: Invalid user git1 from 107.172.46.82
Sep  8 20:12:13 kapalua sshd\[2028\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.172.46.82

2019-09-09T05:13:32.212271abusebot.cloudsearch.cf sshd\[31648\]: Invalid user ivan from 42.101.44.212 port 34784