\[2019-11-15 09:33:16\] NOTICE\[2601\] chan_sip.c: Registration from '105 \' failed for '37.49.230.16:38152' - Wrong password
\[2019-11-15 09:33:16\] SECURITY\[2634\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-11-15T09:33:16.676-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="105",SessionID="0x7fdf2c0e92a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.16/38152",Challenge="669252bc",ReceivedChallenge="669252bc",ReceivedHash="3e3f8392621d582ef448dcadec534ea2"
\[2019-11-15 09:38:23\] NOTICE\[2601\] chan_sip.c: Registration from '104 \' failed for '37.49.230.16:52486' - Wrong password
\[2019-11-15 09:38:23\] SECURITY\[2634\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-11-15T09:38:23.451-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="104",SessionID="0x7fdf2c0e92a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.23

Bible

2020-10-13T06:44:21.356144news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
2020-10-13T06:44:25.395781news0 dovecot[21131]: pop3-login: Aborted login (auth failed, 1 attempts in 4 secs): user=, method=PLAIN, rip=37.49.230.238, lip=95.111.246.42, session=
2020-10-13T06:44:28.401407news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
...

2020-10-13T06:44:21.356144news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
2020-10-13T06:44:25.395781news0 dovecot[21131]: pop3-login: Aborted login (auth failed, 1 attempts in 4 secs): user=, method=PLAIN, rip=37.49.230.238, lip=95.111.246.42, session=
2020-10-13T06:44:28.401407news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
...

Dovecot Invalid User Login Attempt.

"AmooT";tag=3533393765393339313363340132313832313335333935

\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.624+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffea08d88",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="096f171f",ReceivedChallenge="096f171f",ReceivedHash="b099bdfad5869da4ae2114a56a2b4299"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.759+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffeab8148",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="233a417c",ReceivedChallenge="233a417c",ReceivedHash="0017581d14759d4b5ad3a404ed924131"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.783+0200",Severity="Error",Service="SIP",EventVersion="2",Accoun
...

\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.624+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffea08d88",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="096f171f",ReceivedChallenge="096f171f",ReceivedHash="b099bdfad5869da4ae2114a56a2b4299"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.759+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffeab8148",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="233a417c",ReceivedChallenge="233a417c",ReceivedHash="0017581d14759d4b5ad3a404ed924131"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.783+0200",Severity="Error",Service="SIP",EventVersion="2",Accoun
...

[N1.H1.VM1] Port Scanner Detected Blocked by UFW

SIP Server BruteForce Attack

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

Hellooo

Hellooo

Sep 28 15:49:19 : SSH login attempts with invalid user

Brute-force attempt banned

159.89.48.222 - - [11/Aug/2020:14:13:22 +0200] "GET /wp-login.php HTTP/1.1" 200 6060 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
159.89.48.222 - - [11/Aug/2020:14:13:23 +0200] "POST /wp-login.php HTTP/1.1" 200 6311 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
159.89.48.222 - - [11/Aug/2020:14:13:24 +0200] "POST /xmlrpc.php HTTP/1.1" 200 427 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"

$f2bV_matches

Aug 11 13:18:30 scw-6657dc sshd[1492]: Failed password for root from 222.186.42.7 port 35040 ssh2
Aug 11 13:18:30 scw-6657dc sshd[1492]: Failed password for root from 222.186.42.7 port 35040 ssh2
Aug 11 13:18:32 scw-6657dc sshd[1492]: Failed password for root from 222.186.42.7 port 35040 ssh2
...

2020-08-11T15:11:11.182306snf-827550 sshd[13156]: Failed password for root from 122.51.31.60 port 51178 ssh2
2020-08-11T15:13:04.186619snf-827550 sshd[13170]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.51.31.60  user=root
2020-08-11T15:13:05.721352snf-827550 sshd[13170]: Failed password for root from 122.51.31.60 port 39822 ssh2
...

Aug 11 15:16:23 vpn01 sshd[3317]: Failed password for root from 175.24.55.211 port 37258 ssh2
...

Aug 11 12:33:28 localhost sshd[31268]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.42.155  user=root
Aug 11 12:33:30 localhost sshd[31268]: Failed password for root from 222.186.42.155 port 24533 ssh2
Aug 11 12:33:32 localhost sshd[31268]: Failed password for root from 222.186.42.155 port 24533 ssh2
Aug 11 12:33:28 localhost sshd[31268]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.42.155  user=root
Aug 11 12:33:30 localhost sshd[31268]: Failed password for root from 222.186.42.155 port 24533 ssh2
Aug 11 12:33:32 localhost sshd[31268]: Failed password for root from 222.186.42.155 port 24533 ssh2
Aug 11 12:33:28 localhost sshd[31268]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.42.155  user=root
Aug 11 12:33:30 localhost sshd[31268]: Failed password for root from 222.186.42.155 port 24533 ssh2
Aug 11 12:33:32 localhost sshd[31268]: Fa
...

Bruteforce detected by fail2ban

Aug 11 15:30:21 vpn01 sshd[3668]: Failed password for root from 112.85.42.173 port 26116 ssh2
Aug 11 15:30:24 vpn01 sshd[3668]: Failed password for root from 112.85.42.173 port 26116 ssh2
...

0,30-01/03 [bc01/m10] PostRequest-Spammer scoring: zurich

Aug 11 02:47:46 web9 sshd\[31257\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=168.138.221.133  user=root
Aug 11 02:47:48 web9 sshd\[31257\]: Failed password for root from 168.138.221.133 port 58130 ssh2
Aug 11 02:52:01 web9 sshd\[31810\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=168.138.221.133  user=root
Aug 11 02:52:02 web9 sshd\[31810\]: Failed password for root from 168.138.221.133 port 39378 ssh2
Aug 11 02:56:17 web9 sshd\[32349\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=168.138.221.133  user=root

Aug 11 08:58:48 NPSTNNYC01T sshd[16612]: Failed password for root from 129.204.186.151 port 48924 ssh2
Aug 11 09:02:18 NPSTNNYC01T sshd[17064]: Failed password for root from 129.204.186.151 port 57974 ssh2
...

Aug 11 15:04:23 piServer sshd[21912]: Failed password for root from 198.46.189.106 port 46176 ssh2
Aug 11 15:07:57 piServer sshd[22288]: Failed password for root from 198.46.189.106 port 37062 ssh2
...

Aug 11 02:39:34 web9 sshd\[30242\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.100.171  user=root
Aug 11 02:39:36 web9 sshd\[30242\]: Failed password for root from 142.93.100.171 port 50500 ssh2
Aug 11 02:41:52 web9 sshd\[30523\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.100.171  user=root
Aug 11 02:41:55 web9 sshd\[30523\]: Failed password for root from 142.93.100.171 port 58324 ssh2
Aug 11 02:44:01 web9 sshd\[30781\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.100.171  user=root

(smtpauth) Failed SMTP AUTH login from 156.67.83.22 (PL/Poland/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-08-11 16:43:09 plain authenticator failed for ([156.67.83.22]) [156.67.83.22]: 535 Incorrect authentication data (set_id=info)