Has tried to attack my server.

[2020-09-09 13:27:41] SECURITY[2022] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2020-09-09T13:27:41.388+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="",SessionID="518973635-123769044-452640836",LocalAddress="IPV4/UDP/51.255.2.242/5060",RemoteAddress="IPV4/UDP/5.183.92.170/60923",Challenge="1599650861/52198d4167c3a9a00e5d361ee7f02dcd",Response="6532c6282320ff82d1005d4123862644",ExpectedResponse=""
[2020-09-09 13:27:41] SECURITY[2022] res_security_log.c: SecurityEvent="InvalidAccountID",EventTV="2020-09-09T13:27:41.418+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="10",SessionID="518973635-123769044-452640836",LocalAddress="IPV4/UDP/51.255.2.242/5060",RemoteAddress="IPV4/UDP/5.183.92.170/60923"
[2020-09-09 13:27:41] SECURITY[2022] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2020-09-09T13:27:41.419+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="",SessionID="518
...

[2020-09-09 13:27:41] SECURITY[2022] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2020-09-09T13:27:41.388+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="",SessionID="518973635-123769044-452640836",LocalAddress="IPV4/UDP/51.255.2.242/5060",RemoteAddress="IPV4/UDP/5.183.92.170/60923",Challenge="1599650861/52198d4167c3a9a00e5d361ee7f02dcd",Response="6532c6282320ff82d1005d4123862644",ExpectedResponse=""
[2020-09-09 13:27:41] SECURITY[2022] res_security_log.c: SecurityEvent="InvalidAccountID",EventTV="2020-09-09T13:27:41.418+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="10",SessionID="518973635-123769044-452640836",LocalAddress="IPV4/UDP/51.255.2.242/5060",RemoteAddress="IPV4/UDP/5.183.92.170/60923"
[2020-09-09 13:27:41] SECURITY[2022] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2020-09-09T13:27:41.419+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="",SessionID="518
...

[2020-09-09 13:27:41] SECURITY[2022] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2020-09-09T13:27:41.388+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="",SessionID="518973635-123769044-452640836",LocalAddress="IPV4/UDP/51.255.2.242/5060",RemoteAddress="IPV4/UDP/5.183.92.170/60923",Challenge="1599650861/52198d4167c3a9a00e5d361ee7f02dcd",Response="6532c6282320ff82d1005d4123862644",ExpectedResponse=""
[2020-09-09 13:27:41] SECURITY[2022] res_security_log.c: SecurityEvent="InvalidAccountID",EventTV="2020-09-09T13:27:41.418+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="10",SessionID="518973635-123769044-452640836",LocalAddress="IPV4/UDP/51.255.2.242/5060",RemoteAddress="IPV4/UDP/5.183.92.170/60923"
[2020-09-09 13:27:41] SECURITY[2022] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2020-09-09T13:27:41.419+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="",SessionID="518
...

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[2020-07-16 18:26:05] NOTICE[1277] chan_sip.c: Registration from '"543"' failed for '5.183.92.128:52838' - Wrong password
[2020-07-16 18:26:05] SECURITY[1295] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-07-16T18:26:05.073-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="543",SessionID="0x7f175414cf98",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/5.183.92.128/52838",Challenge="328762d7",ReceivedChallenge="328762d7",ReceivedHash="f154eae596210d6e27e3ca3700e7b8de"
[2020-07-16 18:32:29] NOTICE[1277] chan_sip.c: Registration from '"544"' failed for '5.183.92.128:37339' - Wrong password
[2020-07-16 18:32:29] SECURITY[1295] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-07-16T18:32:29.083-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="544",SessionID="0x7f17540de808",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/5.183.92.1
...

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\[Apr 12 06:53:33\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '5.183.92.176:53654' - Wrong password
\[Apr 12 06:54:20\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '5.183.92.176:59122' - Wrong password
\[Apr 12 06:54:42\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '5.183.92.176:60576' - Wrong password
\[Apr 12 06:54:48\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '5.183.92.176:65343' - Wrong password
\[Apr 12 06:55:00\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '5.183.92.176:59309' - Wrong password
\[Apr 12 06:55:11\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '5.183.92.176:51353' - Wrong password
\[Apr 12 06:55:31\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '5.1
...

POST /index.php/napisat-nam.html HTTP/1.0 303 - index.phpMozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36 OPR/55.0.2994.44

[2020-02-26 22:38:49] NOTICE[14744] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '' failed for '5.183.92.32:64598' (callid: 376215522-649646893-389571818) - Failed to authenticate
[2020-02-26 22:38:49] SECURITY[20721] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2020-02-26T22:38:49.492+0100",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="",SessionID="376215522-649646893-389571818",LocalAddress="IPV4/UDP/185.118.196.148/5060",RemoteAddress="IPV4/UDP/5.183.92.32/64598",Challenge="1582753129/dad733ecc9e5841b0a1529ab2e7adcda",Response="1de0935f9f82950b6c3e7fb95c212f82",ExpectedResponse=""
[2020-02-26 22:38:49] NOTICE[14744] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '' failed for '5.183.92.32:64598' (callid: 376215522-649646893-389571818) - Failed to authenticate
[2020-02-26 22:38:49] SECURITY[20721] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2020-02-26T22:38:49.563+0

Jun  3 07:45:14 legacy sshd[30680]: Failed password for root from 222.186.175.216 port 12664 ssh2
Jun  3 07:45:28 legacy sshd[30680]: error: maximum authentication attempts exceeded for root from 222.186.175.216 port 12664 ssh2 [preauth]
Jun  3 07:45:35 legacy sshd[30684]: Failed password for root from 222.186.175.216 port 31030 ssh2
...

Jun  3 07:09:45 buvik sshd[25636]: Failed password for root from 159.89.48.63 port 54220 ssh2
Jun  3 07:13:09 buvik sshd[26186]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.89.48.63  user=root
Jun  3 07:13:12 buvik sshd[26186]: Failed password for root from 159.89.48.63 port 58072 ssh2
...

 TCP (SYN) 51.75.249.70:55031 -> port 3389, len 44

Jun  3 05:56:41 host sshd[30153]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=206.189.229.112  user=root
Jun  3 05:56:43 host sshd[30153]: Failed password for root from 206.189.229.112 port 56204 ssh2
...

Jun  3 01:59:56 firewall sshd[30219]: Failed password for root from 165.227.179.138 port 35204 ssh2
Jun  3 02:02:20 firewall sshd[30288]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.227.179.138  user=root
Jun  3 02:02:22 firewall sshd[30288]: Failed password for root from 165.227.179.138 port 47786 ssh2
...

Jun  3 06:57:10 debian kernel: [59195.301248] [UFW BLOCK] IN=eth0 OUT= MAC=52:54:00:be:e4:65:08:e8:4f:6e:48:0c:08:00 SRC=162.243.142.136 DST=89.252.131.35 LEN=40 TOS=0x00 PREC=0x00 TTL=240 ID=54321 PROTO=TCP SPT=38164 DPT=2455 WINDOW=65535 RES=0x00 SYN URGP=0

$f2bV_matches

2020-06-03T07:07:54.440392vps751288.ovh.net sshd\[26642\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.118.173.166  user=root
2020-06-03T07:07:57.048941vps751288.ovh.net sshd\[26642\]: Failed password for root from 138.118.173.166 port 46366 ssh2
2020-06-03T07:12:40.602360vps751288.ovh.net sshd\[26676\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.118.173.166  user=root
2020-06-03T07:12:42.473123vps751288.ovh.net sshd\[26676\]: Failed password for root from 138.118.173.166 port 51324 ssh2
2020-06-03T07:17:16.542031vps751288.ovh.net sshd\[26726\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.118.173.166  user=root

" "

Jun  3 08:34:08 pkdns2 sshd\[49780\]: Failed password for root from 49.88.112.60 port 57768 ssh2Jun  3 08:34:11 pkdns2 sshd\[49780\]: Failed password for root from 49.88.112.60 port 57768 ssh2Jun  3 08:34:13 pkdns2 sshd\[49780\]: Failed password for root from 49.88.112.60 port 57768 ssh2Jun  3 08:35:05 pkdns2 sshd\[49823\]: Failed password for root from 49.88.112.60 port 26902 ssh2Jun  3 08:35:08 pkdns2 sshd\[49823\]: Failed password for root from 49.88.112.60 port 26902 ssh2Jun  3 08:35:10 pkdns2 sshd\[49823\]: Failed password for root from 49.88.112.60 port 26902 ssh2
...

Unauthorised access (Jun  3) SRC=46.235.249.87 LEN=52 PREC=0x20 TTL=56 ID=16733 DF TCP DPT=445 WINDOW=8192 SYN

Jun  2 23:44:22 server1 sshd\[26339\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.151.130.20  user=root
Jun  2 23:44:23 server1 sshd\[26339\]: Failed password for root from 61.151.130.20 port 15062 ssh2
Jun  2 23:48:47 server1 sshd\[27544\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.151.130.20  user=root
Jun  2 23:48:49 server1 sshd\[27544\]: Failed password for root from 61.151.130.20 port 42748 ssh2
Jun  2 23:53:18 server1 sshd\[28900\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.151.130.20  user=root
...

Jun  3 07:03:24 localhost sshd\[17109\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.51.163.35  user=root
Jun  3 07:03:25 localhost sshd\[17109\]: Failed password for root from 49.51.163.35 port 56136 ssh2
Jun  3 07:06:43 localhost sshd\[17346\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.51.163.35  user=root
Jun  3 07:06:45 localhost sshd\[17346\]: Failed password for root from 49.51.163.35 port 33324 ssh2
Jun  3 07:10:06 localhost sshd\[17670\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.51.163.35  user=root
...

Jun  3 01:43:25 ny01 sshd[12547]: Failed password for root from 192.81.208.44 port 54857 ssh2
Jun  3 01:46:23 ny01 sshd[12902]: Failed password for root from 192.81.208.44 port 51766 ssh2

Jun  3 06:48:25 mout sshd[31479]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.71.109.97  user=root
Jun  3 06:48:28 mout sshd[31479]: Failed password for root from 167.71.109.97 port 35904 ssh2