Aug 18 05:55:18 server postfix/smtpd[32283]: NOQUEUE: reject: RCPT from unknown[2a01:4f8:c17:e835::1]: 554 5.7.1 Service unavailable; Client host [2a01:4f8:c17:e835::1] blocked using zen.spamhaus.org; https://www.spamhaus.org/sbl/query/SBLCSS; from= to= proto=ESMTP helo=

May 24 22:41:29 abendstille sshd\[20844\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.159.29  user=root
May 24 22:41:31 abendstille sshd\[20844\]: Failed password for root from 142.93.159.29 port 54398 ssh2
May 24 22:44:53 abendstille sshd\[24372\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.159.29  user=root
May 24 22:44:55 abendstille sshd\[24372\]: Failed password for root from 142.93.159.29 port 59908 ssh2
May 24 22:48:21 abendstille sshd\[27791\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.159.29  user=root
...

51.178.141.15 - - \[24/May/2020:22:31:16 +0200\] "POST /wp-login.php HTTP/1.0" 200 6400 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
51.178.141.15 - - \[24/May/2020:22:31:17 +0200\] "POST /wp-login.php HTTP/1.0" 200 6267 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
51.178.141.15 - - \[24/May/2020:22:31:18 +0200\] "POST /wp-login.php HTTP/1.0" 200 6263 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"

May 24 23:06:30 abendstille sshd\[13664\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.232  user=root
May 24 23:06:32 abendstille sshd\[13716\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.232  user=root
May 24 23:06:32 abendstille sshd\[13664\]: Failed password for root from 112.85.42.232 port 25371 ssh2
May 24 23:06:34 abendstille sshd\[13716\]: Failed password for root from 112.85.42.232 port 56316 ssh2
May 24 23:06:34 abendstille sshd\[13664\]: Failed password for root from 112.85.42.232 port 25371 ssh2
...

May 24 23:08:58 debian-2gb-nbg1-2 kernel: \[12613344.875307\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=195.54.160.225 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=245 ID=65454 PROTO=TCP SPT=49689 DPT=3877 WINDOW=1024 RES=0x00 SYN URGP=0

May 24 16:44:57 NPSTNNYC01T sshd[30894]: Failed password for root from 190.128.239.146 port 59806 ssh2
May 24 16:49:26 NPSTNNYC01T sshd[31263]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.128.239.146
May 24 16:49:28 NPSTNNYC01T sshd[31263]: Failed password for invalid user lacoste from 190.128.239.146 port 37662 ssh2
...

May 24 16:22:47 r.ca sshd[1562]: Failed password for invalid user pan from 177.42.37.126 port 7688 ssh2

May 24 20:54:04 game-panel sshd[14386]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=141.98.81.99
May 24 20:54:07 game-panel sshd[14386]: Failed password for invalid user Administrator from 141.98.81.99 port 42039 ssh2
May 24 20:54:43 game-panel sshd[14442]: Failed password for root from 141.98.81.99 port 38161 ssh2

May 24 23:25:55 lukav-desktop sshd\[21206\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.26.23.148  user=root
May 24 23:25:58 lukav-desktop sshd\[21206\]: Failed password for root from 59.26.23.148 port 39816 ssh2
May 24 23:28:29 lukav-desktop sshd\[21248\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.26.23.148  user=root
May 24 23:28:31 lukav-desktop sshd\[21248\]: Failed password for root from 59.26.23.148 port 52390 ssh2
May 24 23:31:14 lukav-desktop sshd\[21276\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.26.23.148  user=root

May 24 22:56:45 PorscheCustomer sshd[24537]: Failed password for root from 106.12.175.218 port 40964 ssh2
May 24 23:00:58 PorscheCustomer sshd[24674]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.175.218
May 24 23:01:00 PorscheCustomer sshd[24674]: Failed password for invalid user camera from 106.12.175.218 port 40064 ssh2
...

May 24 22:47:15 sip sshd[389700]: Invalid user butter from 183.12.236.108 port 63174
May 24 22:47:17 sip sshd[389700]: Failed password for invalid user butter from 183.12.236.108 port 63174 ssh2
May 24 22:49:50 sip sshd[389751]: Invalid user ftpuser from 183.12.236.108 port 63545
...

[Mon May 25 03:31:30.667468 2020] [:error] [pid 4726:tid 139717567837952] [client 207.46.13.127:7388] [client 207.46.13.127] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "karangploso.jatim.bmkg.go.id"] [uri "/index.php/prakiraan-musim/296-prakiraan-musim-kemarau/prakiraan-sifat-hujan-musim-kemarau/prakiraan-sifat-hujan-musim-kemarau-di-malang"] [unique_id "XsrZooebSB3qjOjjfHG24QAAAZc"]
...

May 24 23:03:58 eventyay sshd[26450]: Failed password for root from 106.54.202.131 port 56114 ssh2
May 24 23:08:44 eventyay sshd[26582]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.54.202.131
May 24 23:08:46 eventyay sshd[26582]: Failed password for invalid user ftpuser from 106.54.202.131 port 53300 ssh2
...

$f2bV_matches

[ssh] SSH attack

May 24 22:31:00 minden010 sshd[6526]: Failed password for root from 159.203.219.38 port 41722 ssh2
May 24 22:33:26 minden010 sshd[7322]: Failed password for mysql from 159.203.219.38 port 36893 ssh2
...