[N10.H2.VM2] Port Scanner Detected Blocked by UFW

Jul  6 03:05:07 main sshd[12946]: Failed password for invalid user alerm from 103.138.109.68 port 61607 ssh2
Jul  6 03:05:18 main sshd[12965]: Failed password for invalid user admin from 103.138.109.68 port 54785 ssh2
Jul  6 03:05:31 main sshd[12967]: Failed password for invalid user pi from 103.138.109.68 port 55292 ssh2
Jul 10 09:26:00 main sshd[12121]: Failed password for invalid user alerm from 103.138.109.68 port 63786 ssh2
Jul 10 09:27:41 main sshd[12186]: Failed password for invalid user admin from 103.138.109.68 port 63273 ssh2
Jul 10 09:27:48 main sshd[12190]: Failed password for invalid user pi from 103.138.109.68 port 63853 ssh2

...

Jun 24 06:33:16 mail sshd[8744]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.138.109.68 
Jun 24 06:33:17 mail sshd[8744]: Failed password for invalid user press from 103.138.109.68 port 52611 ssh2
...

Jun 22 09:40:52 mail sshd[26097]: Failed password for root from 103.138.109.68 port 58571 ssh2
Jun 22 09:40:53 mail sshd[26097]: error: Received disconnect from 103.138.109.68 port 58571:3: com.jcraft.jsch.JSchException: Auth fail [preauth]
...

May 25 15:51:02 abendstille sshd\[16955\]: Invalid user press from 103.138.109.68
May 25 15:51:02 abendstille sshd\[16955\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.138.109.68
May 25 15:51:04 abendstille sshd\[16955\]: Failed password for invalid user press from 103.138.109.68 port 51289 ssh2
May 25 15:53:19 abendstille sshd\[19247\]: Invalid user press from 103.138.109.68
May 25 15:53:20 abendstille sshd\[19247\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.138.109.68
...

Apr 25 20:27:38 vps647732 sshd[6223]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.138.109.68
Apr 25 20:27:40 vps647732 sshd[6223]: Failed password for invalid user spam from 103.138.109.68 port 57029 ssh2
...

SSH Login Bruteforce

Apr  7 08:37:46 [host] sshd[22761]: Invalid user b
Apr  7 08:37:47 [host] sshd[22761]: pam_unix(sshd:
Apr  7 08:37:48 [host] sshd[22761]: Failed passwor

Lines containing failures of 103.138.109.68
Nov 22 01:21:17 hvs sshd[2194]: error: Received disconnect from 103.138.109.68 port 61388:3: com.jcraft.jsch.JSchException: Auth fail [preauth]
Nov 22 01:21:17 hvs sshd[2194]: Disconnected from authenticating user r.r 103.138.109.68 port 61388 [preauth]
Nov 22 01:21:21 hvs sshd[2196]: error: Received disconnect from 103.138.109.68 port 56575:3: com.jcraft.jsch.JSchException: Auth fail [preauth]
Nov 22 01:21:21 hvs sshd[2196]: Disconnected from authenticating user r.r 103.138.109.68 port 56575 [preauth]
Nov 22 01:21:23 hvs sshd[2199]: error: Received disconnect from 103.138.109.68 port 52532:3: com.jcraft.jsch.JSchException: Auth fail [preauth]
Nov 22 01:21:23 hvs sshd[2199]: Disconnected from authenticating user r.r 103.138.109.68 port 52532 [preauth]
Nov 22 01:21:44 hvs sshd[2207]: Invalid user adminixxxr from 103.138.109.68 port 53727
Nov 22 01:21:45 hvs sshd[2207]: error: Received disconnect from 103.138.109.68 port 53727:3:........
------------------------------

Nov 18 09:28:46 server sshd\[9560\]: Invalid user stackato from 103.138.109.68
Nov 18 09:28:47 server sshd\[9560\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.138.109.68 
Nov 18 09:28:49 server sshd\[9560\]: Failed password for invalid user stackato from 103.138.109.68 port 61359 ssh2
Nov 18 09:28:49 server sshd\[9561\]: Received disconnect from 103.138.109.68: 3: com.jcraft.jsch.JSchException: Auth fail
Nov 18 09:29:15 server sshd\[9624\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.138.109.68  user=root
...

07/25/2020-11:16:32.406346 103.138.109.44 Protocol: 6 ET SCAN NMAP -sS window 1024

Jul 18 12:36:29 debian-2gb-nbg1-2 kernel: \[17327139.039675\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=103.138.109.190 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=239 ID=18506 PROTO=TCP SPT=45046 DPT=15355 WINDOW=1024 RES=0x00 SYN URGP=0

MAIL: User Login Brute Force Attempt

(smtpauth) Failed SMTP AUTH login from 103.138.109.89 (VN/Vietnam/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-07-06 08:18:13 login authenticator failed for (7zIldrnobP) [103.138.109.89]: 535 Incorrect authentication data (set_id=info)

Attempted Brute Force (dovecot)

 TCP (SYN) 103.138.109.221:46523 -> port 48933, len 44

[portscan] tcp/22 [SSH]
[scan/connect: 6 time(s)]
*(RWIN=8192)(04301449)

Unauthorized connection attempt from IP address 103.138.109.95 on Port 3389(RDP)

Mar 12 22:42:36 debian-2gb-nbg1-2 kernel: \[6308492.719597\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=103.138.109.98 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=238 ID=20010 PROTO=TCP SPT=54235 DPT=15317 WINDOW=1024 RES=0x00 SYN URGP=0

Mar 12 05:11:30 debian-2gb-nbg1-2 kernel: \[6245430.069546\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=103.138.109.98 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=238 ID=22166 PROTO=TCP SPT=54235 DPT=17529 WINDOW=1024 RES=0x00 SYN URGP=0

Mar 11 23:10:51 debian-2gb-nbg1-2 kernel: \[6223792.233628\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=103.138.109.98 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=238 ID=22912 PROTO=TCP SPT=54235 DPT=11823 WINDOW=1024 RES=0x00 SYN URGP=0

Mar  8 11:58:44 debian-2gb-nbg1-2 kernel: \[5924280.955892\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=103.138.109.98 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=237 ID=18676 PROTO=TCP SPT=41290 DPT=12377 WINDOW=1024 RES=0x00 SYN URGP=0

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Nov 10 00:09:26 web9 sshd\[31541\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.114.171.237  user=root
Nov 10 00:09:28 web9 sshd\[31541\]: Failed password for root from 122.114.171.237 port 40858 ssh2
Nov 10 00:15:22 web9 sshd\[32344\]: Invalid user deploy2 from 122.114.171.237
Nov 10 00:15:22 web9 sshd\[32344\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.114.171.237
Nov 10 00:15:24 web9 sshd\[32344\]: Failed password for invalid user deploy2 from 122.114.171.237 port 47556 ssh2

Nov 10 09:56:17 h2177944 kernel: \[6251750.875937\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=185.143.223.81 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=248 ID=17556 PROTO=TCP SPT=53588 DPT=2207 WINDOW=1024 RES=0x00 SYN URGP=0 
Nov 10 10:07:41 h2177944 kernel: \[6252435.424221\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=185.143.223.81 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=248 ID=43449 PROTO=TCP SPT=53588 DPT=62817 WINDOW=1024 RES=0x00 SYN URGP=0 
Nov 10 10:07:57 h2177944 kernel: \[6252450.973972\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=185.143.223.81 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=42693 PROTO=TCP SPT=53588 DPT=41807 WINDOW=1024 RES=0x00 SYN URGP=0 
Nov 10 10:24:42 h2177944 kernel: \[6253456.309303\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=185.143.223.81 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=248 ID=25053 PROTO=TCP SPT=53588 DPT=39618 WINDOW=1024 RES=0x00 SYN URGP=0 
Nov 10 10:26:26 h2177944 kernel: \[6253559.858001\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=185.143.223.81 DST=85.2

Nov 10 07:22:36 vps01 sshd[12239]: Failed password for root from 106.13.39.207 port 52212 ssh2

2019-11-10 00:28:05 H=(luduslitterarius.it) [117.197.126.130]:35813 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.10, 127.0.0.4, 127.0.0.3) (https://www.spamhaus.org/query/ip/117.197.126.130)
2019-11-10 00:28:06 H=(luduslitterarius.it) [117.197.126.130]:35813 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.4, 127.0.0.3, 127.0.0.10) (https://www.spamhaus.org/sbl/query/SBLCSS)
2019-11-10 00:28:08 H=(luduslitterarius.it) [117.197.126.130]:35813 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.10, 127.0.0.3, 127.0.0.4) (https://www.spamhaus.org/query/ip/117.197.126.130)
...

Chat Spam

Nov 10 01:19:02 xzibhostname postfix/smtpd[25326]: connect from unknown[192.228.100.118]
Nov 10 01:19:02 xzibhostname postfix/smtpd[25326]: warning: unknown[192.228.100.118]: SASL LOGIN authentication failed: authentication failure
Nov 10 01:19:02 xzibhostname postfix/smtpd[25326]: lost connection after AUTH from unknown[192.228.100.118]
Nov 10 01:19:02 xzibhostname postfix/smtpd[25326]: disconnect from unknown[192.228.100.118]
Nov 10 01:23:00 xzibhostname postfix/smtpd[25326]: connect from unknown[192.228.100.118]
Nov 10 01:23:00 xzibhostname postfix/smtpd[25326]: warning: unknown[192.228.100.118]: SASL LOGIN authentication failed: authentication failure
Nov 10 01:23:01 xzibhostname postfix/smtpd[23033]: connect from unknown[192.228.100.118]
Nov 10 01:23:01 xzibhostname postfix/smtpd[25326]: lost connection after AUTH from unknown[192.228.100.118]
Nov 10 01:23:01 xzibhostname postfix/smtpd[25326]: disconnect from unknown[192.228.100.118]
Nov 10 01:23:01 xzibhostname po........
-------------------------------

'IP reached maximum auth failures for a one day block'

$f2bV_matches

Nov 10 09:50:56 web8 sshd\[26110\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.2.158.227  user=root
Nov 10 09:50:59 web8 sshd\[26110\]: Failed password for root from 5.2.158.227 port 43555 ssh2
Nov 10 09:55:57 web8 sshd\[28645\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.2.158.227  user=root
Nov 10 09:55:59 web8 sshd\[28645\]: Failed password for root from 5.2.158.227 port 19554 ssh2
Nov 10 10:00:50 web8 sshd\[30873\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.2.158.227  user=root

2019-11-10T08:51:30.138385shield sshd\[8022\]: Invalid user administrador from 113.160.101.170 port 42438
2019-11-10T08:51:30.143995shield sshd\[8022\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.160.101.170
2019-11-10T08:51:32.538224shield sshd\[8022\]: Failed password for invalid user administrador from 113.160.101.170 port 42438 ssh2
2019-11-10T08:55:47.596413shield sshd\[8323\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.160.101.170  user=root
2019-11-10T08:55:48.937104shield sshd\[8323\]: Failed password for root from 113.160.101.170 port 52064 ssh2

Automatic report - XMLRPC Attack

Nov 10 06:55:24 ws22vmsma01 sshd[41163]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.169.62.187
Nov 10 06:55:26 ws22vmsma01 sshd[41163]: Failed password for invalid user pankaj from 202.169.62.187 port 38975 ssh2
...

5x Failed Password

Nov 10 06:42:18 firewall sshd[16874]: Failed password for invalid user u from 106.75.16.19 port 39200 ssh2
Nov 10 06:46:56 firewall sshd[17011]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.16.19  user=root
Nov 10 06:46:58 firewall sshd[17011]: Failed password for root from 106.75.16.19 port 46782 ssh2
...