Unauthorized connection attempt detected from IP address 37.49.230.118 to port 81

Aug  1 21:31:24 django-0 sshd[8021]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.49.230.118  user=root
Aug  1 21:31:26 django-0 sshd[8021]: Failed password for root from 37.49.230.118 port 36756 ssh2
...

 TCP (SYN) 37.49.230.118:43687 -> port 81, len 44

Apr 25 05:54:36 mail postfix/smtpd\[25609\]: warning: unknown\[37.49.230.118\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Apr 25 05:54:42 mail postfix/smtpd\[25609\]: warning: unknown\[37.49.230.118\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Apr 25 05:54:52 mail postfix/smtpd\[25609\]: warning: unknown\[37.49.230.118\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

(smtpauth) Failed SMTP AUTH login from 37.49.230.118 (NL/Netherlands/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-04-21 10:03:11 login authenticator failed for (User) [37.49.230.118]: 535 Incorrect authentication data (set_id=soc@farasunict.com)

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

20 attempts against mh-ssh on cloud.magehost.pro

Dec 27 10:30:52 ns3042688 sshd\[19604\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.172  user=root
Dec 27 10:30:54 ns3042688 sshd\[19604\]: Failed password for root from 218.92.0.172 port 52081 ssh2
Dec 27 10:30:56 ns3042688 sshd\[19604\]: Failed password for root from 218.92.0.172 port 52081 ssh2
Dec 27 10:31:00 ns3042688 sshd\[19604\]: Failed password for root from 218.92.0.172 port 52081 ssh2
Dec 27 10:31:03 ns3042688 sshd\[19604\]: Failed password for root from 218.92.0.172 port 52081 ssh2
...

Dec 27 10:47:23 webserver postfix/smtpd\[29663\]: warning: unknown\[92.118.38.39\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Dec 27 10:47:58 webserver postfix/smtpd\[28366\]: warning: unknown\[92.118.38.39\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Dec 27 10:48:33 webserver postfix/smtpd\[29663\]: warning: unknown\[92.118.38.39\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Dec 27 10:49:07 webserver postfix/smtpd\[28366\]: warning: unknown\[92.118.38.39\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Dec 27 10:49:42 webserver postfix/smtpd\[29663\]: warning: unknown\[92.118.38.39\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

Host Scan

Dec 27 08:24:03 unicornsoft sshd\[21976\]: User root from 213.39.53.241 not allowed because not listed in AllowUsers
Dec 27 08:24:03 unicornsoft sshd\[21976\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=213.39.53.241  user=root
Dec 27 08:24:06 unicornsoft sshd\[21976\]: Failed password for invalid user root from 213.39.53.241 port 50296 ssh2

1577427985 - 12/27/2019 07:26:25 Host: 113.53.210.127/113.53.210.127 Port: 445 TCP Blocked

Port 22 Scan, PTR: 77-236-195-122.static.edera.cz.

Dec 27 09:05:27 l02a.shelladdress.co.uk proftpd[5986] 127.0.0.1 (::ffff:198.1.73.228[::ffff:198.1.73.228]): USER admin@revolverworld.com: no such user found from ::ffff:198.1.73.228 [::ffff:198.1.73.228] to ::ffff:185.47.61.71:21
Dec 27 09:05:28 l02a.shelladdress.co.uk proftpd[5988] 127.0.0.1 (::ffff:198.1.73.228[::ffff:198.1.73.228]): USER revolverworld.com: no such user found from ::ffff:198.1.73.228 [::ffff:198.1.73.228] to ::ffff:185.47.61.71:21
Dec 27 09:05:30 l02a.shelladdress.co.uk proftpd[5990] 127.0.0.1 (::ffff:198.1.73.228[::ffff:198.1.73.228]): USER revolverworld: no such user found from ::ffff:198.1.73.228 [::ffff:198.1.73.228] to ::ffff:185.47.61.71:21

Brute force SMTP login attempted.
...

Host Scan

Dec 27 07:23:55 [host] sshd[4885]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.157.192.40  user=root
Dec 27 07:23:57 [host] sshd[4885]: Failed password for root from 52.157.192.40 port 1664 ssh2
Dec 27 07:26:58 [host] sshd[4933]: Invalid user vagrant from 52.157.192.40

Dec 27 05:50:13 server sshd\[25738\]: Failed password for root from 222.186.180.17 port 50446 ssh2
Dec 27 05:50:14 server sshd\[25735\]: Failed password for root from 222.186.180.17 port 60204 ssh2
Dec 27 05:50:14 server sshd\[25740\]: Failed password for root from 222.186.180.17 port 53804 ssh2
Dec 27 05:50:15 server sshd\[25728\]: Failed password for root from 222.186.180.17 port 4684 ssh2
Dec 27 13:02:47 server sshd\[20648\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.17  user=root
...

22/tcp 22/tcp 22/tcp...
[2019-10-29/12-27]7pkt,1pt.(tcp)

Fail2Ban Ban Triggered

Unauthorized connection attempt detected from IP address 78.186.41.140 to port 1433