Must be a valid IPv4 or IPv6 ip address, e.g. 127.0.0.1 or 2001:DB8:0:0:8:800:200C:417A
Basic Info

City: unknown

Region: unknown

Country: Taiwan, China

Internet Service Provider: Chunghwa Telecom Co. Ltd.

Hostname: unknown

Organization: Data Communication Business Group

Usage Type: unknown

Comments:
Type Details Datetime
attackbots
203.66.168.81 (TW/Taiwan/-), 6 distributed sshd attacks on account [root] in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_DISTATTACK; Logs: Oct  7 06:06:48 server2 sshd[27697]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=36.27.19.222  user=root
Oct  7 06:06:50 server2 sshd[27697]: Failed password for root from 36.27.19.222 port 54913 ssh2
Oct  7 06:06:50 server2 sshd[27702]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.199.118.195  user=root
Oct  7 06:06:52 server2 sshd[27702]: Failed password for root from 112.199.118.195 port 63131 ssh2
Oct  7 06:06:37 server2 sshd[27685]: Failed password for root from 51.77.230.49 port 58370 ssh2
Oct  7 06:07:25 server2 sshd[28064]: Failed password for root from 203.66.168.81 port 51330 ssh2

IP Addresses Blocked:

36.27.19.222 (CN/China/-)
112.199.118.195 (PH/Philippines/-)
51.77.230.49 (FR/France/-)
2020-10-07 20:36:36
attack
Oct 06 17:22:50 askasleikir sshd[16091]: Failed password for root from 203.66.168.81 port 49161 ssh2
2020-10-07 12:21:36
attackbots
Time:     Sat Sep 26 10:06:15 2020 +0000
IP:       203.66.168.81 (TW/Taiwan/203-66-168-81.HINET-IP.hinet.net)
Failures: 5 (sshd)
Interval: 3600 seconds
Blocked:  Permanent Block [LF_SSHD]

Log entries:

Sep 26 09:27:46 activeserver sshd[12753]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=203.66.168.81  user=root
Sep 26 09:27:48 activeserver sshd[12753]: Failed password for root from 203.66.168.81 port 60002 ssh2
Sep 26 09:53:30 activeserver sshd[30356]: Invalid user gpadmin from 203.66.168.81 port 58685
Sep 26 09:53:32 activeserver sshd[30356]: Failed password for invalid user gpadmin from 203.66.168.81 port 58685 ssh2
Sep 26 10:06:12 activeserver sshd[21912]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=203.66.168.81  user=root
2020-09-29 02:45:29
attack
SSH Brute-Force attacks
2020-08-30 16:46:59
attackspam
Aug 11 12:03:36 havingfunrightnow sshd[30669]: Failed password for root from 203.66.168.81 port 35672 ssh2
Aug 11 12:10:38 havingfunrightnow sshd[31560]: Failed password for root from 203.66.168.81 port 58382 ssh2
...
2020-08-11 19:35:28
attack
Aug  6 17:04:55 [host] sshd[29623]: pam_unix(sshd:
Aug  6 17:04:56 [host] sshd[29623]: Failed passwor
Aug  6 17:09:25 [host] sshd[29958]: pam_unix(sshd:
2020-08-07 01:33:53
attackbots
Invalid user wf from 203.66.168.81 port 50463
2020-07-27 16:35:19
attackbotsspam
SSH_attack
2020-05-04 03:05:29
attackspam
Invalid user ug from 203.66.168.81 port 33712
2020-04-21 23:02:21
attackbotsspam
$f2bV_matches
2020-04-13 19:39:28
attackspambots
Apr  6 22:35:43 ks10 sshd[2920167]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=203.66.168.81 
Apr  6 22:35:45 ks10 sshd[2920167]: Failed password for invalid user search from 203.66.168.81 port 48200 ssh2
...
2020-04-07 05:53:26
attackspam
Feb 18 14:17:45 silence02 sshd[20045]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=203.66.168.81
Feb 18 14:17:47 silence02 sshd[20045]: Failed password for invalid user rahul from 203.66.168.81 port 43765 ssh2
Feb 18 14:20:27 silence02 sshd[20194]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=203.66.168.81
2020-02-19 04:11:06
attackbotsspam
Unauthorized connection attempt detected from IP address 203.66.168.81 to port 2220 [J]
2020-01-24 07:59:49
attackspam
Dec 26 04:59:39 sigma sshd\[32422\]: Invalid user helpdesk from 203.66.168.81Dec 26 04:59:40 sigma sshd\[32422\]: Failed password for invalid user helpdesk from 203.66.168.81 port 38790 ssh2
...
2019-12-26 13:55:13
attack
Invalid user post1 from 203.66.168.81 port 55094
2019-10-27 03:30:20
attackbots
Invalid user post1 from 203.66.168.81 port 55094
2019-10-24 21:09:25
attackbots
2019-10-07T15:47:59.609760abusebot-5.cloudsearch.cf sshd\[23245\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=203-66-168-81.hinet-ip.hinet.net  user=root
2019-10-08 00:18:39
attackbotsspam
Jun 29 23:46:38 ncomp sshd[5474]: Invalid user papiers from 203.66.168.81
Jun 29 23:46:38 ncomp sshd[5474]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=203.66.168.81
Jun 29 23:46:38 ncomp sshd[5474]: Invalid user papiers from 203.66.168.81
Jun 29 23:46:40 ncomp sshd[5474]: Failed password for invalid user papiers from 203.66.168.81 port 50686 ssh2
2019-06-30 05:49:46
attackbotsspam
SSH-BRUTEFORCE
2019-06-22 20:31:42
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
b
Dig info:

; <<>> DiG 9.10.3-P4-Ubuntu <<>> 203.66.168.81
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 32977
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;203.66.168.81.			IN	A

;; AUTHORITY SECTION:
.			3600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019040301 1800 900 604800 86400

;; Query time: 2 msec
;; SERVER: 67.207.67.3#53(67.207.67.3)
;; WHEN: Thu Apr 04 09:27:53 +08 2019
;; MSG SIZE  rcvd: 117

Host info
81.168.66.203.in-addr.arpa domain name pointer 203-66-168-81.HINET-IP.hinet.net.
Nslookup info:
Server:		67.207.67.3
Address:	67.207.67.3#53

Non-authoritative answer:
81.168.66.203.in-addr.arpa	name = 203-66-168-81.HINET-IP.hinet.net.

Authoritative answers can be found from:

Related IP info:
Related comments:
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123.120.22.16 attackspam
SSH brute force attempt
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194.180.224.115 attack
3389BruteforceStormFW21
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5.253.27.243 attackbotsspam
2020-09-09T16:57:25.6540101495-001 sshd[37190]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.253.27.243  user=root
2020-09-09T16:57:28.1458711495-001 sshd[37190]: Failed password for root from 5.253.27.243 port 48072 ssh2
2020-09-09T17:01:06.8728641495-001 sshd[37363]: Invalid user zcx from 5.253.27.243 port 50534
2020-09-09T17:01:06.8766111495-001 sshd[37363]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.253.27.243
2020-09-09T17:01:06.8728641495-001 sshd[37363]: Invalid user zcx from 5.253.27.243 port 50534
2020-09-09T17:01:08.7056881495-001 sshd[37363]: Failed password for invalid user zcx from 5.253.27.243 port 50534 ssh2
...
2020-09-10 05:49:03
115.71.239.208 attack
Sep  9 19:18:05 inter-technics sshd[913]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.71.239.208  user=root
Sep  9 19:18:07 inter-technics sshd[913]: Failed password for root from 115.71.239.208 port 54662 ssh2
Sep  9 19:19:14 inter-technics sshd[958]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.71.239.208  user=root
Sep  9 19:19:16 inter-technics sshd[958]: Failed password for root from 115.71.239.208 port 34140 ssh2
Sep  9 19:20:18 inter-technics sshd[1035]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.71.239.208  user=root
Sep  9 19:20:21 inter-technics sshd[1035]: Failed password for root from 115.71.239.208 port 41856 ssh2
...
2020-09-10 05:54:52
162.142.125.22 attack
port
2020-09-10 05:35:33
45.140.17.63 attackspambots
IP 45.140.17.63 attacked honeypot on port: 5588 at 9/9/2020 9:53:59 AM
2020-09-10 05:44:14
42.113.144.86 attackbotsspam
20/9/9@12:54:31: FAIL: Alarm-Network address from=42.113.144.86
20/9/9@12:54:31: FAIL: Alarm-Network address from=42.113.144.86
...
2020-09-10 05:34:52
14.190.95.18 attack
Icarus honeypot on github
2020-09-10 05:42:47
68.183.234.7 attack
Unauthorised connection attempt detected at AUO MAIN. System is sshd. Protected by AUO Stack Web Application Firewall (WAF)
2020-09-10 06:06:05
200.119.193.82 attack
1599670436 - 09/09/2020 18:53:56 Host: 200.119.193.82/200.119.193.82 Port: 445 TCP Blocked
2020-09-10 05:52:05
177.101.172.200 attackspambots
20/9/9@12:54:14: FAIL: Alarm-Network address from=177.101.172.200
...
2020-09-10 05:43:56
46.105.29.160 attackspambots
Sep  9 18:05:35 game-panel sshd[9895]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.105.29.160
Sep  9 18:05:37 game-panel sshd[9895]: Failed password for invalid user satelbrasil from 46.105.29.160 port 42302 ssh2
Sep  9 18:09:08 game-panel sshd[10136]: Failed password for root from 46.105.29.160 port 46754 ssh2
2020-09-10 05:52:54
178.219.171.43 attackbotsspam
Dovecot Invalid User Login Attempt.
2020-09-10 06:05:40
131.117.150.106 attackspam
SSH Brute Force
2020-09-10 06:14:29

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