Attempt to attack host OS, exploiting network vulnerabilities, on 24-02-2020 04:55:22.

Attempt to attack host OS, exploiting network vulnerabilities, on 24-02-2020 04:55:15.

Feb 24 08:01:43 dcd-gentoo sshd[16281]: User root from 222.186.15.158 not allowed because none of user's groups are listed in AllowGroups
Feb 24 08:01:45 dcd-gentoo sshd[16281]: error: PAM: Authentication failure for illegal user root from 222.186.15.158
Feb 24 08:01:43 dcd-gentoo sshd[16281]: User root from 222.186.15.158 not allowed because none of user's groups are listed in AllowGroups
Feb 24 08:01:45 dcd-gentoo sshd[16281]: error: PAM: Authentication failure for illegal user root from 222.186.15.158
Feb 24 08:01:43 dcd-gentoo sshd[16281]: User root from 222.186.15.158 not allowed because none of user's groups are listed in AllowGroups
Feb 24 08:01:45 dcd-gentoo sshd[16281]: error: PAM: Authentication failure for illegal user root from 222.186.15.158
Feb 24 08:01:45 dcd-gentoo sshd[16281]: Failed keyboard-interactive/pam for invalid user root from 222.186.15.158 port 26007 ssh2
...

Unauthorized connection attempt detected from IP address 202.181.234.199 to port 1433

suspicious action Mon, 24 Feb 2020 01:55:47 -0300

Feb 24 07:12:14 MK-Soft-VM6 sshd[4939]: Failed password for root from 222.186.52.78 port 48033 ssh2
Feb 24 07:12:17 MK-Soft-VM6 sshd[4939]: Failed password for root from 222.186.52.78 port 48033 ssh2
...

Attempt to attack host OS, exploiting network vulnerabilities, on 24-02-2020 04:55:21.

2020-02-24 07:19:34 dovecot_login authenticator failed for \(User\) \[92.118.38.42\]: 535 Incorrect authentication data \(set_id=anamite@no-server.de\)
2020-02-24 07:19:35 dovecot_login authenticator failed for \(User\) \[92.118.38.42\]: 535 Incorrect authentication data \(set_id=anamite@no-server.de\)
2020-02-24 07:19:35 dovecot_login authenticator failed for \(User\) \[92.118.38.42\]: 535 Incorrect authentication data \(set_id=anamite@no-server.de\)
2020-02-24 07:19:43 dovecot_login authenticator failed for \(User\) \[92.118.38.42\]: 535 Incorrect authentication data \(set_id=anamnia@no-server.de\)
2020-02-24 07:19:52 dovecot_login authenticator failed for \(User\) \[92.118.38.42\]: 535 Incorrect authentication data \(set_id=anamnia@no-server.de\)
...

Feb 24 04:49:58 localhost sshd\[3410\]: Invalid user ftpuser from 58.212.139.229
Feb 24 04:55:43 localhost sshd\[4059\]: Invalid user feedbackalueducation@123 from 58.212.139.229
Feb 24 04:56:00 localhost sshd\[4114\]: Invalid user ftpuser from 58.212.139.229
...

[2020-02-24 02:13:38] NOTICE[1148] chan_sip.c: Registration from '' failed for '91.109.27.81:55969' - Wrong password
[2020-02-24 02:13:38] SECURITY[1163] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-02-24T02:13:38.339-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="608888",SessionID="0x7fd82cc0d5f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/91.109.27.81/55969",Challenge="0995c37b",ReceivedChallenge="0995c37b",ReceivedHash="e8ed2108b426abb934c13b8b8e0f12bb"
[2020-02-24 02:13:38] NOTICE[1148] chan_sip.c: Registration from '' failed for '91.109.27.81:55968' - Wrong password
[2020-02-24 02:13:38] SECURITY[1163] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-02-24T02:13:38.340-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="608888",SessionID="0x7fd82c6cd778",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/91.109.27.81/55968",Chal
...

suspicious action Mon, 24 Feb 2020 01:55:13 -0300

*Port Scan* detected from 108.160.199.217 (US/United States/217.199.160.108.in-addr.arpa). 4 hits in the last 95 seconds

Feb 24 07:05:27 debian-2gb-nbg1-2 kernel: \[4783529.039613\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=87.236.212.51 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=245 ID=10617 PROTO=TCP SPT=43666 DPT=60021 WINDOW=1024 RES=0x00 SYN URGP=0

port scan and connect, tcp 8080 (http-proxy)

Attempt to attack host OS, exploiting network vulnerabilities, on 24-02-2020 04:55:24.