$f2bV_matches

2020-08-25T23:42:50.087565centos sshd[12235]: Failed password for invalid user ywj from 177.87.154.2 port 46244 ssh2
2020-08-25T23:46:36.514391centos sshd[12423]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2  user=root
2020-08-25T23:46:38.563048centos sshd[12423]: Failed password for root from 177.87.154.2 port 47366 ssh2
...

$f2bV_matches

2020-08-07T07:39:39.971996morrigan.ad5gb.com sshd[952749]: Failed password for root from 177.87.154.2 port 56560 ssh2
2020-08-07T07:39:42.317244morrigan.ad5gb.com sshd[952749]: Disconnected from authenticating user root 177.87.154.2 port 56560 [preauth]

2020-07-31T15:51:00.442243n23.at sshd[1570976]: Failed password for root from 177.87.154.2 port 50658 ssh2
2020-07-31T15:52:34.977881n23.at sshd[1572521]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2  user=root
2020-07-31T15:52:37.389984n23.at sshd[1572521]: Failed password for root from 177.87.154.2 port 43070 ssh2
...

Jul 27 06:59:33 h2779839 sshd[11027]: Invalid user lch from 177.87.154.2 port 37072
Jul 27 06:59:33 h2779839 sshd[11027]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2
Jul 27 06:59:33 h2779839 sshd[11027]: Invalid user lch from 177.87.154.2 port 37072
Jul 27 06:59:36 h2779839 sshd[11027]: Failed password for invalid user lch from 177.87.154.2 port 37072 ssh2
Jul 27 07:03:13 h2779839 sshd[11115]: Invalid user matt from 177.87.154.2 port 60276
Jul 27 07:03:13 h2779839 sshd[11115]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2
Jul 27 07:03:13 h2779839 sshd[11115]: Invalid user matt from 177.87.154.2 port 60276
Jul 27 07:03:15 h2779839 sshd[11115]: Failed password for invalid user matt from 177.87.154.2 port 60276 ssh2
Jul 27 07:06:50 h2779839 sshd[11152]: Invalid user gb from 177.87.154.2 port 55216
...

Jul 23 06:20:04 vps-51d81928 sshd[48326]: Invalid user dumbo from 177.87.154.2 port 33162
Jul 23 06:20:04 vps-51d81928 sshd[48326]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2 
Jul 23 06:20:04 vps-51d81928 sshd[48326]: Invalid user dumbo from 177.87.154.2 port 33162
Jul 23 06:20:06 vps-51d81928 sshd[48326]: Failed password for invalid user dumbo from 177.87.154.2 port 33162 ssh2
Jul 23 06:22:29 vps-51d81928 sshd[48388]: Invalid user vinay from 177.87.154.2 port 38542
...

$f2bV_matches

[ssh] SSH attack

Jun 10 22:48:21 OPSO sshd\[16476\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2  user=admin
Jun 10 22:48:24 OPSO sshd\[16476\]: Failed password for admin from 177.87.154.2 port 48386 ssh2
Jun 10 22:52:36 OPSO sshd\[17441\]: Invalid user inpre from 177.87.154.2 port 49680
Jun 10 22:52:36 OPSO sshd\[17441\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2
Jun 10 22:52:38 OPSO sshd\[17441\]: Failed password for invalid user inpre from 177.87.154.2 port 49680 ssh2

$f2bV_matches

May 30 11:29:29 web01 sshd[22179]: Failed password for root from 177.87.154.2 port 51666 ssh2
May 30 11:33:52 web01 sshd[22216]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2 
...

Bruteforce detected by fail2ban

May 27 07:49:35 lukav-desktop sshd\[7235\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2  user=root
May 27 07:49:37 lukav-desktop sshd\[7235\]: Failed password for root from 177.87.154.2 port 39448 ssh2
May 27 07:51:39 lukav-desktop sshd\[7255\]: Invalid user testing from 177.87.154.2
May 27 07:51:39 lukav-desktop sshd\[7255\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2
May 27 07:51:41 lukav-desktop sshd\[7255\]: Failed password for invalid user testing from 177.87.154.2 port 40186 ssh2

2020-05-26T11:51:07.765425devel sshd[10101]: Failed password for root from 177.87.154.2 port 43218 ssh2
2020-05-26T11:55:42.291591devel sshd[10413]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=r-2.154-87-177.nrttelecom.com.br  user=root
2020-05-26T11:55:44.745295devel sshd[10413]: Failed password for root from 177.87.154.2 port 48936 ssh2

Invalid user kvr from 177.87.154.2 port 49816

May 20 21:07:18 vps687878 sshd\[25406\]: Failed password for invalid user zgb from 177.87.154.2 port 37932 ssh2
May 20 21:11:21 vps687878 sshd\[25956\]: Invalid user obd from 177.87.154.2 port 41106
May 20 21:11:21 vps687878 sshd\[25956\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2
May 20 21:11:23 vps687878 sshd\[25956\]: Failed password for invalid user obd from 177.87.154.2 port 41106 ssh2
May 20 21:15:26 vps687878 sshd\[26389\]: Invalid user jan from 177.87.154.2 port 44280
May 20 21:15:26 vps687878 sshd\[26389\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2
...

May  7 19:18:45 melroy-server sshd[11688]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2 
May  7 19:18:48 melroy-server sshd[11688]: Failed password for invalid user cssserver from 177.87.154.2 port 39726 ssh2
...

May  1 07:42:32 scw-6657dc sshd[456]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2
May  1 07:42:32 scw-6657dc sshd[456]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2
May  1 07:42:34 scw-6657dc sshd[456]: Failed password for invalid user lvs from 177.87.154.2 port 40186 ssh2
...

Apr 30 14:26:05 server sshd[29557]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2
Apr 30 14:26:06 server sshd[29557]: Failed password for invalid user steam from 177.87.154.2 port 50586 ssh2
Apr 30 14:31:08 server sshd[30012]: Failed password for root from 177.87.154.2 port 34830 ssh2
...

Apr 28 13:55:33 NPSTNNYC01T sshd[14066]: Failed password for root from 177.87.154.2 port 38884 ssh2
Apr 28 13:58:55 NPSTNNYC01T sshd[14370]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2
Apr 28 13:58:57 NPSTNNYC01T sshd[14370]: Failed password for invalid user guest from 177.87.154.2 port 56974 ssh2
...

Apr 11 10:29:03 ns382633 sshd\[24922\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2  user=root
Apr 11 10:29:05 ns382633 sshd\[24922\]: Failed password for root from 177.87.154.2 port 42454 ssh2
Apr 11 10:41:57 ns382633 sshd\[27427\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2  user=root
Apr 11 10:41:59 ns382633 sshd\[27427\]: Failed password for root from 177.87.154.2 port 58206 ssh2
Apr 11 10:46:11 ns382633 sshd\[28371\]: Invalid user admin from 177.87.154.2 port 38532
Apr 11 10:46:11 ns382633 sshd\[28371\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.87.154.2

Aug 17 21:25:48 ubuntu-2gb-nbg1-dc3-1 sshd[29117]: Failed password for root from 158.69.113.76 port 55658 ssh2
Aug 17 21:25:54 ubuntu-2gb-nbg1-dc3-1 sshd[29117]: error: maximum authentication attempts exceeded for root from 158.69.113.76 port 55658 ssh2 [preauth]
...

2019-08-17T19:06:59.294392abusebot-4.cloudsearch.cf sshd\[10197\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.189  user=root

Aug 17 13:35:04 mailman dovecot: imap-login: Disconnected (auth failed, 1 attempts): user=, method=PLAIN, rip=119.146.145.50, lip=[munged], TLS

Aug 17 09:03:10 tdfoods sshd\[12253\]: Invalid user sk from 144.34.221.47
Aug 17 09:03:10 tdfoods sshd\[12253\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=144.34.221.47.16clouds.com
Aug 17 09:03:12 tdfoods sshd\[12253\]: Failed password for invalid user sk from 144.34.221.47 port 49404 ssh2
Aug 17 09:07:16 tdfoods sshd\[12640\]: Invalid user dejan from 144.34.221.47
Aug 17 09:07:16 tdfoods sshd\[12640\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=144.34.221.47.16clouds.com

Aug 17 21:52:50 server sshd\[4709\]: Invalid user fernwartung from 114.67.90.149 port 59882
Aug 17 21:52:50 server sshd\[4709\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.67.90.149
Aug 17 21:52:52 server sshd\[4709\]: Failed password for invalid user fernwartung from 114.67.90.149 port 59882 ssh2
Aug 17 21:56:19 server sshd\[26916\]: Invalid user users from 114.67.90.149 port 48859
Aug 17 21:56:19 server sshd\[26916\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.67.90.149

Aug 17 08:45:38 hcbb sshd\[19739\]: Invalid user norcon from 150.214.136.51
Aug 17 08:45:38 hcbb sshd\[19739\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=morfeo.us.es
Aug 17 08:45:40 hcbb sshd\[19739\]: Failed password for invalid user norcon from 150.214.136.51 port 55214 ssh2
Aug 17 08:50:54 hcbb sshd\[20180\]: Invalid user admin from 150.214.136.51
Aug 17 08:50:54 hcbb sshd\[20180\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=morfeo.us.es

Aug 17 21:19:43 piServer sshd\[22803\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.78  user=root
Aug 17 21:19:45 piServer sshd\[22803\]: Failed password for root from 49.88.112.78 port 20872 ssh2
Aug 17 21:19:48 piServer sshd\[22803\]: Failed password for root from 49.88.112.78 port 20872 ssh2
Aug 17 21:19:50 piServer sshd\[22803\]: Failed password for root from 49.88.112.78 port 20872 ssh2
Aug 17 21:19:53 piServer sshd\[22828\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.78  user=root
...

Aug 17 15:23:45 TORMINT sshd\[31106\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.52.89  user=root
Aug 17 15:23:47 TORMINT sshd\[31106\]: Failed password for root from 222.186.52.89 port 25584 ssh2
Aug 17 15:23:53 TORMINT sshd\[31145\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.52.89  user=root
...

Aug 17 20:49:00 plex sshd[12516]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=125.227.236.60  user=root
Aug 17 20:49:02 plex sshd[12516]: Failed password for root from 125.227.236.60 port 45372 ssh2
Aug 17 20:53:36 plex sshd[12621]: Invalid user che from 125.227.236.60 port 35074
Aug 17 20:53:36 plex sshd[12621]: Invalid user che from 125.227.236.60 port 35074

Aug 17 13:35:05 mailman postfix/smtpd[1749]: warning: dil.diligences.com[162.144.250.249]: SASL PLAIN authentication failed: authentication failure

Aug 17 09:23:57 kapalua sshd\[3743\]: Invalid user simulator from 91.207.40.42
Aug 17 09:23:57 kapalua sshd\[3743\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.207.40.42
Aug 17 09:23:59 kapalua sshd\[3743\]: Failed password for invalid user simulator from 91.207.40.42 port 45170 ssh2
Aug 17 09:28:29 kapalua sshd\[4161\]: Invalid user admin from 91.207.40.42
Aug 17 09:28:29 kapalua sshd\[4161\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.207.40.42

\[2019-08-17 14:32:39\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-17T14:32:39.058-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00441519470519",SessionID="0x7ff4d0348688",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.109.35/63892",ACLName="no_extension_match"
\[2019-08-17 14:33:55\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-17T14:33:55.138-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000441519470519",SessionID="0x7ff4d014e018",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.109.35/60951",ACLName="no_extension_match"
\[2019-08-17 14:35:15\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-17T14:35:15.236-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="900441519470519",SessionID="0x7ff4d02d8f48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.109.35/50812",ACLName="no_exte

Triggered by Fail2Ban at Vostok web server

Aug 17 21:06:02 vps691689 sshd[31700]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.14.26
Aug 17 21:06:04 vps691689 sshd[31700]: Failed password for invalid user tomcat from 178.128.14.26 port 59028 ssh2
...

vps1:sshd-InvalidUser