Lines containing failures of 24.212.13.95
Sep 10 19:23:22 mellenthin sshd[12496]: User r.r from 24.212.13.95 not allowed because not listed in AllowUsers
Sep 10 19:23:23 mellenthin sshd[12496]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=24.212.13.95  user=r.r
Sep 10 19:23:25 mellenthin sshd[12496]: Failed password for invalid user r.r from 24.212.13.95 port 59812 ssh2
Sep 10 19:23:25 mellenthin sshd[12496]: Connection closed by invalid user r.r 24.212.13.95 port 59812 [preauth]


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https://www.blocklist.de/en/view.html?ip=24.212.13.95

$f2bV_matches

[f2b] sshd bruteforce, retries: 1

(From ThomasVancexU@gmail.com) Hello there! 

Would you'd be interested in building a mobile app for your business? I'm a mobile app developer that can design and program on any platform (Android, iOs) for an affordable price. There are various types of apps that can help your business, whether in terms of marketing, business efficiency, or both. If you already have some ideas, I would love to hear about them to help you more on how we can make them all possible. 

I have many ideas of my own that I'd really like to share with you of things that have worked really well for my other clients. If you're interested in building an app, or getting more information about it, then I'd love to give you a free consultation. Kindly reply to let me know when you'd like to be contacted. I hope to speak with you soon! 

Thanks!
Thomas Vance
Web Marketing Specialist

 TCP (SYN) 82.117.239.183:57156 -> port 80, len 44

(sshd) Failed SSH login from 114.4.227.194 (ID/Indonesia/114-4-227-194.resources.indosat.com): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Sep 11 12:01:58 server sshd[1973]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.4.227.194  user=root
Sep 11 12:02:00 server sshd[1973]: Failed password for root from 114.4.227.194 port 38556 ssh2
Sep 11 12:09:01 server sshd[3684]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.4.227.194  user=root
Sep 11 12:09:03 server sshd[3684]: Failed password for root from 114.4.227.194 port 34654 ssh2
Sep 11 12:14:23 server sshd[5191]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.4.227.194  user=root

[MK-VM4] SSH login failed

Sep 11 11:49:31 firewall sshd[8461]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.228.182.244  user=root
Sep 11 11:49:33 firewall sshd[8461]: Failed password for root from 94.228.182.244 port 39724 ssh2
Sep 11 11:53:57 firewall sshd[8641]: Invalid user test from 94.228.182.244
...

Sep 11 11:16:34 ns382633 sshd\[31617\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=14.21.7.162  user=root
Sep 11 11:16:36 ns382633 sshd\[31617\]: Failed password for root from 14.21.7.162 port 26341 ssh2
Sep 11 11:17:22 ns382633 sshd\[31682\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=14.21.7.162  user=root
Sep 11 11:17:24 ns382633 sshd\[31682\]: Failed password for root from 14.21.7.162 port 26343 ssh2
Sep 11 11:17:45 ns382633 sshd\[31706\]: Invalid user cn from 14.21.7.162 port 26344
Sep 11 11:17:45 ns382633 sshd\[31706\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=14.21.7.162

2020-09-11T15:05:18.989284server.espacesoutien.com sshd[32383]: Invalid user admin from 68.168.213.251 port 59840
2020-09-11T15:05:19.001673server.espacesoutien.com sshd[32383]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.168.213.251
2020-09-11T15:05:18.989284server.espacesoutien.com sshd[32383]: Invalid user admin from 68.168.213.251 port 59840
2020-09-11T15:05:20.887945server.espacesoutien.com sshd[32383]: Failed password for invalid user admin from 68.168.213.251 port 59840 ssh2
...

Bruteforce detected by fail2ban

5x Failed Password

Sep 11 11:27:51 Tower sshd[23800]: Connection from 115.79.138.163 port 44199 on 192.168.10.220 port 22 rdomain ""
Sep 11 11:27:53 Tower sshd[23800]: Failed password for root from 115.79.138.163 port 44199 ssh2
Sep 11 11:27:53 Tower sshd[23800]: Received disconnect from 115.79.138.163 port 44199:11: Bye Bye [preauth]
Sep 11 11:27:53 Tower sshd[23800]: Disconnected from authenticating user root 115.79.138.163 port 44199 [preauth]

0,58-01/01 [bc01/m20] PostRequest-Spammer scoring: Durban01

Sep 10 18:54:44 db sshd[26516]: User root from 183.230.248.88 not allowed because none of user's groups are listed in AllowGroups
...