Feb 25 00:24:13 debian-2gb-nbg1-2 kernel: \[4845853.438962\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=92.246.84.211 DST=195.201.40.59 LEN=441 TOS=0x00 PREC=0x00 TTL=56 ID=18737 DF PROTO=UDP SPT=5068 DPT=65476 LEN=421 
Feb 25 00:24:13 debian-2gb-nbg1-2 kernel: \[4845853.460057\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=92.246.84.211 DST=195.201.40.59 LEN=440 TOS=0x00 PREC=0x00 TTL=56 ID=18738 DF PROTO=UDP SPT=5068 DPT=65486 LEN=420 
Feb 25 00:24:13 debian-2gb-nbg1-2 kernel: \[4845853.478992\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=92.246.84.211 DST=195.201.40.59 LEN=440 TOS=0x00 PREC=0x00 TTL=56 ID=18739 DF PROTO=UDP SPT=5068 DPT=65496 LEN=420

CMS (WordPress or Joomla) login attempt.

CMS (WordPress or Joomla) login attempt.

[2020-07-12 19:37:44] NOTICE[1150][C-00002b62] chan_sip.c: Call from '' (92.246.84.185:56768) to extension '141146812111513' rejected because extension not found in context 'public'.
[2020-07-12 19:37:44] SECURITY[1167] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-12T19:37:44.812-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="141146812111513",SessionID="0x7fcb4c3704d8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/56768",ACLName="no_extension_match"
[2020-07-12 19:41:25] NOTICE[1150][C-00002b6b] chan_sip.c: Call from '' (92.246.84.185:60848) to extension '+++69846812111513' rejected because extension not found in context 'public'.
[2020-07-12 19:41:25] SECURITY[1167] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-12T19:41:25.632-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="+++69846812111513",SessionID="0x7fcb4c4c4328",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/
...

[2020-07-12 02:11:53] NOTICE[1150][C-00002564] chan_sip.c: Call from '' (92.246.84.185:50546) to extension '0046812111513' rejected because extension not found in context 'public'.
[2020-07-12 02:11:53] SECURITY[1167] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-12T02:11:53.216-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0046812111513",SessionID="0x7fcb4c39d6d8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/50546",ACLName="no_extension_match"
[2020-07-12 02:17:15] NOTICE[1150][C-00002569] chan_sip.c: Call from '' (92.246.84.185:56734) to extension '000046812111513' rejected because extension not found in context 'public'.
[2020-07-12 02:17:15] SECURITY[1167] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-12T02:17:15.815-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000046812111513",SessionID="0x7fcb4c38f368",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.2
...

[2020-07-07 02:22:04] NOTICE[1150][C-0000004f] chan_sip.c: Call from '' (92.246.84.185:50246) to extension '001446812111513' rejected because extension not found in context 'public'.
[2020-07-07 02:22:04] SECURITY[1167] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-07T02:22:04.556-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="001446812111513",SessionID="0x7fcb4c013ff8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/50246",ACLName="no_extension_match"
[2020-07-07 02:28:57] NOTICE[1150][C-00000053] chan_sip.c: Call from '' (92.246.84.185:62504) to extension '001546812111513' rejected because extension not found in context 'public'.
[2020-07-07 02:28:57] SECURITY[1167] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-07T02:28:57.029-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="001546812111513",SessionID="0x7fcb4c013ff8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/
...

[2020-07-05 18:58:18] NOTICE[1197][C-00001eac] chan_sip.c: Call from '' (92.246.84.185:56192) to extension '701246812111513' rejected because extension not found in context 'public'.
[2020-07-05 18:58:18] SECURITY[1214] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-05T18:58:18.835-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="701246812111513",SessionID="0x7f6d2806bc78",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/56192",ACLName="no_extension_match"
[2020-07-05 19:01:05] NOTICE[1197][C-00001eb1] chan_sip.c: Call from '' (92.246.84.185:54049) to extension '801246462607509' rejected because extension not found in context 'public'.
[2020-07-05 19:01:05] SECURITY[1214] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-05T19:01:05.434-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="801246462607509",SessionID="0x7f6d2833d578",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/
...

[2020-07-05 05:43:37] NOTICE[1197] chan_sip.c: Registration from '' failed for '92.246.84.136:64567' - Wrong password
[2020-07-05 05:43:37] SECURITY[1214] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-07-05T05:43:37.004-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1329",SessionID="0x7f6d283864f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.136/64567",Challenge="2cbed16a",ReceivedChallenge="2cbed16a",ReceivedHash="e42a207ec125eacee0bd0bdd96c0bbcd"
[2020-07-05 05:47:57] NOTICE[1197] chan_sip.c: Registration from '' failed for '92.246.84.136:64352' - Wrong password
[2020-07-05 05:47:57] SECURITY[1214] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-07-05T05:47:57.399-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1330",SessionID="0x7f6d283864f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.136
...

[2020-07-04 17:31:36] NOTICE[1197] chan_sip.c: Registration from '' failed for '92.246.84.136:61332' - Wrong password
[2020-07-04 17:31:36] SECURITY[1214] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-07-04T17:31:36.819-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1157",SessionID="0x7f6d28373408",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.136/61332",Challenge="7a38aadc",ReceivedChallenge="7a38aadc",ReceivedHash="ccf96020b4741130e2001cb5959afa86"
[2020-07-04 17:35:47] NOTICE[1197] chan_sip.c: Registration from '' failed for '92.246.84.136:51799' - Wrong password
[2020-07-04 17:35:47] SECURITY[1214] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-07-04T17:35:47.199-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1158",SessionID="0x7f6d2806bc78",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.136
...

[2020-06-28 03:01:27] NOTICE[1273][C-00005480] chan_sip.c: Call from '' (92.246.84.185:65435) to extension '1++46313113308' rejected because extension not found in context 'public'.
[2020-06-28 03:01:27] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-28T03:01:27.285-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="1++46313113308",SessionID="0x7f31c054cb28",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/65435",ACLName="no_extension_match"
[2020-06-28 03:06:36] NOTICE[1273][C-00005485] chan_sip.c: Call from '' (92.246.84.185:61514) to extension '2+2046313113308' rejected because extension not found in context 'public'.
[2020-06-28 03:06:36] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-28T03:06:36.104-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="2+2046313113308",SessionID="0x7f31c054cb28",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92
...

[2020-06-26 00:08:16] NOTICE[1273][C-00004ac9] chan_sip.c: Call from '' (92.246.84.185:54554) to extension '801146313113308' rejected because extension not found in context 'public'.
[2020-06-26 00:08:16] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-26T00:08:16.766-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="801146313113308",SessionID="0x7f31c03f7758",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/54554",ACLName="no_extension_match"
[2020-06-26 00:12:12] NOTICE[1273][C-00004ad2] chan_sip.c: Call from '' (92.246.84.185:55312) to extension '701146313113308' rejected because extension not found in context 'public'.
[2020-06-26 00:12:12] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-26T00:12:12.197-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="701146313113308",SessionID="0x7f31c05e9da8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/
...

[2020-06-25 11:09:12] NOTICE[1273][C-00004936] chan_sip.c: Call from '' (92.246.84.185:56603) to extension '40018046313113308' rejected because extension not found in context 'public'.
[2020-06-25 11:09:12] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-25T11:09:12.855-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="40018046313113308",SessionID="0x7f31c018ea98",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/56603",ACLName="no_extension_match"
[2020-06-25 11:10:20] NOTICE[1273][C-00004938] chan_sip.c: Call from '' (92.246.84.185:59963) to extension '3300646812111513' rejected because extension not found in context 'public'.
[2020-06-25 11:10:20] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-25T11:10:20.680-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="3300646812111513",SessionID="0x7f31c03f7758",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV
...

[2020-06-25 02:48:15] NOTICE[1273][C-000047dc] chan_sip.c: Call from '' (92.246.84.185:54953) to extension '000546812111513' rejected because extension not found in context 'public'.
[2020-06-25 02:48:15] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-25T02:48:15.948-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000546812111513",SessionID="0x7f31c02f97a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/54953",ACLName="no_extension_match"
[2020-06-25 02:49:05] NOTICE[1273][C-000047dd] chan_sip.c: Call from '' (92.246.84.185:57236) to extension '60070046462607509' rejected because extension not found in context 'public'.
[2020-06-25 02:49:05] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-25T02:49:05.854-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="60070046462607509",SessionID="0x7f31c018ea98",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/
...

[2020-06-23 20:25:00] NOTICE[1273][C-000041e0] chan_sip.c: Call from '' (92.246.84.185:56936) to extension '77746313113308' rejected because extension not found in context 'public'.
[2020-06-23 20:25:00] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-23T20:25:00.079-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="77746313113308",SessionID="0x7f31c018ea98",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/56936",ACLName="no_extension_match"
[2020-06-23 20:26:34] NOTICE[1273][C-000041e1] chan_sip.c: Call from '' (92.246.84.185:61224) to extension '4400346462607509' rejected because extension not found in context 'public'.
[2020-06-23 20:26:34] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-23T20:26:34.941-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="4400346462607509",SessionID="0x7f31c02adcc8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/
...

[2020-06-23 02:48:26] NOTICE[1273][C-00003e8c] chan_sip.c: Call from '' (92.246.84.185:63045) to extension '+46812111513' rejected because extension not found in context 'public'.
[2020-06-23 02:48:26] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-23T02:48:26.999-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="+46812111513",SessionID="0x7f31c054cb28",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/63045",ACLName="no_extension_match"
[2020-06-23 02:50:19] NOTICE[1273][C-00003e90] chan_sip.c: Call from '' (92.246.84.185:63751) to extension '+46313113308' rejected because extension not found in context 'public'.
[2020-06-23 02:50:19] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-23T02:50:19.697-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="+46313113308",SessionID="0x7f31c05e9da8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.18
...

[2020-06-22 13:53:35] NOTICE[1273][C-00003bfc] chan_sip.c: Call from '' (92.246.84.185:51057) to extension '0002346313113308' rejected because extension not found in context 'public'.
[2020-06-22 13:53:35] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-22T13:53:35.154-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0002346313113308",SessionID="0x7f31c0335a48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/92.246.84.185/51057",ACLName="no_extension_match"
[2020-06-22 14:01:52] NOTICE[1273][C-00003c02] chan_sip.c: Call from '' (92.246.84.185:52279) to extension '0003146313113308' rejected because extension not found in context 'public'.
[2020-06-22 14:01:52] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-22T14:01:52.390-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0003146313113308",SessionID="0x7f31c018ea98",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/
...

0,34-01/01 [bc01/m44] PostRequest-Spammer scoring: Durban01

Dec 12 17:28:59 server sshd\[10580\]: Invalid user info from 51.15.77.156
Dec 12 17:28:59 server sshd\[10580\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=tevp.net 
Dec 12 17:29:01 server sshd\[10580\]: Failed password for invalid user info from 51.15.77.156 port 55576 ssh2
Dec 12 17:40:27 server sshd\[14276\]: Invalid user backup from 51.15.77.156
Dec 12 17:40:27 server sshd\[14276\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=tevp.net 
...

[Aegis] @ 2019-12-12 07:22:46  0000 -> Attempted Administrator Privilege Gain: ET SCAN LibSSH Based Frequent SSH Connections Likely BruteForce Attack

Dec 12 16:40:18 sauna sshd[231501]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=130.180.193.73
Dec 12 16:40:20 sauna sshd[231501]: Failed password for invalid user bbb from 130.180.193.73 port 33811 ssh2
...

Portscan or hack attempt detected by psad/fwsnort

445/tcp 1433/tcp...
[2019-10-20/12-12]9pkt,2pt.(tcp)

[Aegis] @ 2019-12-12 15:39:58  0000 -> Attempted Administrator Privilege Gain: ET SCAN LibSSH Based Frequent SSH Connections Likely BruteForce Attack

Dec 12 15:32:00 ns3042688 sshd\[14037\]: Invalid user Taija from 132.145.170.174
Dec 12 15:32:00 ns3042688 sshd\[14037\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=132.145.170.174 
Dec 12 15:32:01 ns3042688 sshd\[14037\]: Failed password for invalid user Taija from 132.145.170.174 port 43247 ssh2
Dec 12 15:40:16 ns3042688 sshd\[19100\]: Invalid user home from 132.145.170.174
Dec 12 15:40:16 ns3042688 sshd\[19100\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=132.145.170.174 
...

Cluster member 192.168.0.31 (-) said, DENY 109.224.12.170, Reason:[(imapd) Failed IMAP login from 109.224.12.170 (IQ/Iraq/-): 1 in the last 3600 secs]

Dec 12 16:17:17 sauna sshd[230919]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=121.164.233.83
Dec 12 16:17:18 sauna sshd[230919]: Failed password for invalid user adm from 121.164.233.83 port 39950 ssh2
...

$f2bV_matches

1433/tcp 445/tcp...
[2019-11-12/12-12]4pkt,2pt.(tcp)

1433/tcp 445/tcp...
[2019-10-11/12-12]11pkt,2pt.(tcp)

Autoban   69.94.131.11 AUTH/CONNECT

Dec 12 15:38:31 vps647732 sshd[4439]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.241.251
Dec 12 15:38:33 vps647732 sshd[4439]: Failed password for invalid user client from 140.143.241.251 port 37916 ssh2
...