Fail2Ban automatic report:
SSH brute-force:
Oct 1 09:17:04 serw sshd[1574255]: Invalid user cod2ser ...
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SSH brute-force:
Oct 1 09:17:04 serw sshd[1574255]: Invalid user cod2server from 61.171.65.219 port 55438
Oct 1 09:17:04 serw sshd[1574255]: Disconnected from invalid user cod2server 61.171.65.219 port 55438 [preauth]
Oct 1 09:21:55 serw sshd[1574291]: Disconnected from authenticating user root 61.171.65.219 port 36494 [preauth]
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Fail2Ban automatic report:
SSH brute-force:
Oct 1 09:10:47 serw sshd[1574162]: Unable to negotiate ...
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SSH brute-force:
Oct 1 09:10:47 serw sshd[1574162]: Unable to negotiate with 35.205.190.52 port 49568: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1 [preauth]
Oct 1 09:10:57 serw sshd[1574165]: Unable to negotiate with 35.205.190.52 port 42728: no matching host key type found. Their offer: ssh-dss [preauth]
Oct 1 09:10:57 serw sshd[1574167]: Connection closed by 35.205.190.52 port 42740 [preauth]
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Fail2Ban automatic report:
SSH suspicious user names:
Oct 1 09:09:47 serw sshd[1574084]: Connection ...
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SSH suspicious user names:
Oct 1 09:09:47 serw sshd[1574084]: Connection closed by invalid user admin 34.140.31.53 port 20628 [preauth]
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Fail2Ban automatic report:
SSH brute-force:
Oct 1 07:37:00 serw sshd[1572886]: Disconnected from au ...
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SSH brute-force:
Oct 1 07:37:00 serw sshd[1572886]: Disconnected from authenticating user root 120.48.179.46 port 57160 [preauth]
Oct 1 07:40:58 serw sshd[1573168]: Invalid user yassine from 120.48.179.46 port 36892
Oct 1 07:40:58 serw sshd[1573168]: Disconnected from invalid user yassine 120.48.179.46 port 36892 [preauth]
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Fail2Ban automatic report:
SSH multiple root login attempts:
Oct 1 07:34:42 serw sshd[1572806]: Con ...
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SSH multiple root login attempts:
Oct 1 07:34:42 serw sshd[1572806]: Connection closed by authenticating user root 77.239.124.41 port 15942 [preauth]
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Fail2Ban automatic report:
SSH brute-force:
Oct 1 05:13:14 serw sshd[1571148]: Disconnected from au ...
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SSH brute-force:
Oct 1 05:13:14 serw sshd[1571148]: Disconnected from authenticating user root 189.169.73.86 port 39560 [preauth]
Oct 1 05:16:23 serw sshd[1571215]: Disconnected from authenticating user root 189.169.73.86 port 49604 [preauth]
Oct 1 05:17:57 serw sshd[1571224]: Invalid user mary from 189.169.73.86 port 51158
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Fail2Ban automatic report:
SSH brute-force:
Oct 1 04:47:47 serw sshd[1570644]: Disconnected from au ...
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SSH brute-force:
Oct 1 04:47:47 serw sshd[1570644]: Disconnected from authenticating user root 156.236.66.15 port 36724 [preauth]
Oct 1 04:52:05 serw sshd[1570787]: Invalid user facturacion from 156.236.66.15 port 51612
Oct 1 04:52:05 serw sshd[1570787]: Disconnected from invalid user facturacion 156.236.66.15 port 51612 [preauth]
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Fail2Ban automatic report:
SSH brute-force:
Oct 1 03:59:06 serw sshd[1569409]: Invalid user mobile ...
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SSH brute-force:
Oct 1 03:59:06 serw sshd[1569409]: Invalid user mobile from 120.48.54.130 port 60446
Oct 1 03:59:06 serw sshd[1569409]: Disconnected from invalid user mobile 120.48.54.130 port 60446 [preauth]
Oct 1 04:04:53 serw sshd[1569624]: Invalid user tan from 120.48.54.130 port 55830
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Fail2Ban automatic report:
SSH brute-force:
Oct 1 03:55:47 serw sshd[1569341]: Disconnected from au ...
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SSH brute-force:
Oct 1 03:55:47 serw sshd[1569341]: Disconnected from authenticating user root 92.30.243.89 port 39070 [preauth]
Oct 1 04:01:54 serw sshd[1569433]: Invalid user zhangyi from 92.30.243.89 port 37584
Oct 1 04:01:54 serw sshd[1569433]: Disconnected from invalid user zhangyi 92.30.243.89 port 37584 [preauth]
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Fail2Ban automatic report:
SSH brute-force:
Sep 30 19:42:17 serw sshd[1562492]: Disconnected from au ...
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SSH brute-force:
Sep 30 19:42:17 serw sshd[1562492]: Disconnected from authenticating user root 196.219.224.230 port 36504 [preauth]
Sep 30 19:50:53 serw sshd[1562556]: Invalid user ldap from 196.219.224.230 port 60970
Sep 30 19:50:53 serw sshd[1562556]: Disconnected from invalid user ldap 196.219.224.230 port 60970 [preauth]
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Fail2Ban automatic report:
Multiple approaches to abusing server as an open proxy:
176.65.134.48 - - ...
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Multiple approaches to abusing server as an open proxy:
176.65.134.48 - - [30/Sep/2026:19:06:07 +0200] "GET http://proxy.flarevpn.digital:8080/judge HTTP/1.1" 403 153 "-" "Go-http-client/1.1" "-"
176.65.134.48 - - [30/Sep/2026:19:06:07 +0200] "GET http://proxy.flarevpn.digital:8080/judge HTTP/1.1" 403 153 "-" "Go-http-client/1.1" "-"
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Fail2Ban automatic report:
SSH suspicious user names:
Sep 30 17:20:57 serw sshd[1560452]: Connection ...
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SSH suspicious user names:
Sep 30 17:20:57 serw sshd[1560452]: Connection closed by invalid user ubuntu 103.124.100.129 port 57872 [preauth]
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Fail2Ban automatic report:
SSH suspicious user names:
Sep 30 17:20:17 serw sshd[1560405]: Connection ...
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SSH suspicious user names:
Sep 30 17:20:17 serw sshd[1560405]: Connection closed by invalid user ubuntu 66.116.196.142 port 55604 [preauth]
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Fail2Ban automatic report:
SSH suspicious user names:
Sep 30 17:13:53 serw sshd[1559908]: Connection ...
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SSH suspicious user names:
Sep 30 17:13:53 serw sshd[1559908]: Connection closed by invalid user admin 190.214.55.52 port 52034 [preauth]
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Fail2Ban automatic report:
SSH brute-force:
Sep 30 17:03:32 serw sshd[1559360]: Invalid user lander ...
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SSH brute-force:
Sep 30 17:03:32 serw sshd[1559360]: Invalid user lander from 157.66.47.161 port 59740
Sep 30 17:03:32 serw sshd[1559360]: Disconnected from invalid user lander 157.66.47.161 port 59740 [preauth]
Sep 30 17:10:45 serw sshd[1559609]: Disconnected from authenticating user root 157.66.47.161 port 42434 [preauth]
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Fail2Ban automatic report:
SSH suspicious user names:
Sep 30 17:08:01 serw sshd[1559398]: Connection ...
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SSH suspicious user names:
Sep 30 17:08:01 serw sshd[1559398]: Connection closed by invalid user ubuntu 85.146.143.17 port 40342 [preauth]
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Brute-ForceSSH
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